[ { "id": "https://authors.library.caltech.edu/records/2wh2r-ywk73", "eprint_id": 102446, "eprint_status": "archive", "datestamp": "2023-08-22 04:38:50", "lastmod": "2023-10-20 00:12:32", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Gonzales-E-J", "name": { "family": "Gonzales", "given": "Erica J." }, "orcid": "0000-0002-9329-2190" }, { "id": "Crepp-J-R", "name": { "family": "Crepp", "given": "Justin R." }, "orcid": "0000-0003-0800-0593" }, { "id": "Bechter-E-B", "name": { "family": "Bechter", "given": "Eric B." }, "orcid": "0000-0001-8725-8730" }, { "id": "Wood-C-M", "name": { "family": "Wood", "given": "Charlotte M." }, "orcid": "0000-0003-4773-4602" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" } }, { "id": "Montet-B-T", "name": { "family": "Montet", "given": "Benjamin T." }, "orcid": "0000-0001-7516-8308" }, { "id": "Isaacson-H-T", "name": { "family": "Isaacson", "given": "Howard" }, "orcid": "0000-0002-0531-1073" }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "Andrew W." }, "orcid": "0000-0001-8638-0320" } ] }, "title": "The TRENDS High-contrast Imaging Survey. VIII. Compendium of Benchmark Objects", "ispublished": "pub", "full_text_status": "public", "keywords": "Astrometric binary stars; Binary stars; Visual binary stars; Spectroscopic binary stars; Direct imaging; Brown dwarfs; Low mass stars; Radial velocity; M stars", "note": "\u00a9 2020. The American Astronomical Society. \n\nReceived 2019 February 13; revised 2020 January 15; accepted 2020 January 17; published 2020 April 9. \n\nWe thank Greg P. Laughlin for providing an early release of the RV data that was later produced in the manuscript by Butler et al. (2017). We thank the entire CPS team for their contribution to the legacy of RVs that inspired this work. E.J.G. thanks Ian J.M. Crossfield and Andy Skemer for their critique and support during the writing process. E.J.G. and this material is based upon work supported by the National Science Foundation Graduate Research Fellowship under grant No. 1339067. J.R.C. acknowledges support from the NASA Early Career (NNX13AB03G) and NSF CAREER (1654125) fellowship programs. \n\nThis work has made use of data from the European Space Agency (ESA) mission Gaia (https://www.cosmos.esa.int/gaia), processed by the Gaia Data Processing and Analysis Consortium (DPAC, https://www.cosmos.esa.int/web/gaia/dpac/consortium). Funding for the DPAC has been provided by national institutions, in particular the institutions participating in the Gaia Multilateral Agreement. We are appreciative of the vision and support of the Potenziani and Wolfe families. We are grateful to the island of Hawaii and the use of the W. M. Keck Observatory on the revered mountain of Maunakea, mahalo. \n\nFacility: Keck:II - KECK II Telescope (HIRES, NIRC2).\n\n
Published - pdf
", "abstract": "The physical properties of faint stellar and substellar objects often rely on indirect, model-dependent estimates. For example, the masses of brown dwarfs are usually inferred using evolutionary models, which are age dependent and have yet to be properly calibrated. With the goal of identifying new benchmark objects to test low-mass stellar and substellar models, we have carried out a comprehensive adaptive optics survey as part of the TaRgetting bENchmark-objects with the Doppler Spectroscopy high-contrast imaging program. Using legacy radial velocity measurements from the High Resolution Echelle Spectrometer at Keck, we have identified several dozen stars that show long-term Doppler accelerations. We present follow-up high-contrast observations from the campaign and report the discovery of 31 comoving companions, as well as 11 strong candidate companions, to solar-type stars with well-determined parallax and metallicity values. Benchmark objects of this nature lend themselves to orbit determinations, dynamical mass estimates, and independent compositional assessment. This compendium of benchmark objects will serve as a convenient test group to substantiate theoretical evolutionary and atmospheric models near the hydrogen fusing limit.", "date": "2020-04-10", "date_type": "published", "publication": "Astrophysical Journal", "volume": "893", "number": "1", "publisher": "American Astronomical Society", "pagerange": "Art. No. 27", "id_number": "CaltechAUTHORS:20200409-115738652", "issn": "1538-4357", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20200409-115738652", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NSF Graduate Research Fellowship", "grant_number": "DGE-1339067" }, { "agency": "NASA", "grant_number": "NNX13AB03G" }, { "agency": "NSF", "grant_number": "AST-1654125" }, { "agency": "Gaia Multilateral Agreement" }, { "agency": "NASA Sagan Fellowship" } ] }, "local_group": { "items": [ { "id": "Astronomy-Department" } ] }, "doi": "10.3847/1538-4357/ab71fb", "primary_object": { "basename": "pdf", "url": "https://authors.library.caltech.edu/records/2wh2r-ywk73/files/pdf" }, "resource_type": "article", "pub_year": "2020", "author_list": "Gonzales, Erica J.; Crepp, Justin R.; et el." }, { "id": "https://authors.library.caltech.edu/records/0h60z-67s55", "eprint_id": 92463, "eprint_status": "archive", "datestamp": "2023-08-19 15:05:26", "lastmod": "2023-10-20 15:43:49", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Luhn-J-K", "name": { "family": "Luhn", "given": "Jacob K." }, "orcid": "0000-0002-4927-9925" }, { "id": "Bastien-F-A", "name": { "family": "Bastien", "given": "Fabienne A." }, "orcid": "0000-0002-7243-1921" }, { "id": "Wright-J-T", "name": { "family": "Wright", "given": "Jason T." }, "orcid": "0000-0001-6160-5888" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John A." }, "orcid": "0000-0001-9808-7172" }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "Andrew W." }, "orcid": "0000-0001-8638-0320" }, { "id": "Isaacson-H-T", "name": { "family": "Isaacson", "given": "Howard" }, "orcid": "0000-0002-0531-1073" } ] }, "title": "Retired A Stars and Their Companions VIII: 15 New Planetary Signals Around Subgiants and Transit Parameters for California Planet Search Planets with Subgiant Hosts", "ispublished": "pub", "full_text_status": "public", "keywords": "planets and satellites: detection \u2013 planets and satellites: fundamental parameters \u2013 techniques: radial velocities", "note": "\u00a9 2019 The American Astronomical Society. \n\nReceived 2018 May 17; revised 2018 November 1; accepted 2018 November 5; published 2019 March 20. \n\nWe would like to thank the anonymous referee whose suggestions have greatly enhanced this paper. We would like to thank Thomas Beatty and Arpita Roy for their discussions and helpful comments. Many of the new planets and planet candidates in this work have come to fruition with the last several years of observations. These observations would not have taken place without Andrew Howard shepherding the observations and extending the time baseline for these systems. We also wish to thank Alan Reyes for his help observing. We also wish to thank Scott Gaudi for pointing out that our transit probabilities are a priori transit probabilities and Dan Stevens for clarification on how the a posteriori probabilities would differ. The authors wish to recognize and acknowledge the very significant cultural role and reverence that the summit of Maunakea has always had within the indigenous Hawaiian community. We are most fortunate to have the opportunity to conduct observations from this mountain. \n\nThis research has made use of the SIMBAD database, operated at CDS, Strasbourg, France; the Exoplanet Orbit Database and the Exoplanet Data Explorer at exoplanets.org; and of NASA's Astrophysics Data System Bibliographic Services. This material is based upon work supported by the National Science Foundation Graduate Research Fellowship Program under grant No. DGE1255832. \n\nSoftware: RVLIN (Wright et al. 2009), BOOTTRAN (Wang et al. 2012), FORECAST (Chen & Kipping 2017).\n\nPublished - Luhn_2019_AJ_157_149.pdf
Accepted Version - 1811.03043.pdf
", "abstract": "We present the discovery of seven new planets and eight planet candidates around subgiant stars, as additions to the known sample of planets around \"retired A stars.\" Among these are the possible first three-planet systems around subgiant stars, HD 163607 and HD 4917. Additionally, we present calculations of possible transit times, durations, depths, and probabilities for all known planets around subgiant (3 < log g < 4) stars, focused on possible transits during the TESS mission. While most have transit probabilities of 1%\u20132%, we find that there are three planets with transit probabilities >9%.", "date": "2019-04", "date_type": "published", "publication": "Astronomical Journal", "volume": "157", "number": "4", "publisher": "American Astronomical Society", "pagerange": "Art. No. 149", "id_number": "CaltechAUTHORS:20190124-122620928", "issn": "1538-3881", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20190124-122620928", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NSF Graduate Research Fellowship", "grant_number": "DGE-1255832" } ] }, "local_group": { "items": [ { "id": "Astronomy-Department" } ] }, "doi": "10.3847/1538-3881/aaf5d0", "primary_object": { "basename": "1811.03043.pdf", "url": "https://authors.library.caltech.edu/records/0h60z-67s55/files/1811.03043.pdf" }, "related_objects": [ { "basename": "Luhn_2019_AJ_157_149.pdf", "url": "https://authors.library.caltech.edu/records/0h60z-67s55/files/Luhn_2019_AJ_157_149.pdf" } ], "resource_type": "article", "pub_year": "2019", "author_list": "Luhn, Jacob K.; Bastien, Fabienne A.; et el." }, { "id": "https://authors.library.caltech.edu/records/1aapq-h5h60", "eprint_id": 89324, "eprint_status": "archive", "datestamp": "2023-08-21 23:54:47", "lastmod": "2024-02-02 21:05:32", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Piskorz-Danielle", "name": { "family": "Piskorz", "given": "Danielle" }, "orcid": "0000-0003-4451-2342" }, { "id": "Buzard-Cam", "name": { "family": "Buzard", "given": "Cam" }, "orcid": "0000-0002-9943-6124" }, { "id": "Line-Michael-R", "name": { "family": "Line", "given": "Michael R." }, "orcid": "0000-0002-2338-476X" }, { "id": "Knutson-H-A", "name": { "family": "Knutson", "given": "Heather A." }, "orcid": "0000-0002-5375-4725" }, { "id": "Benneke-Bj\u00f6rn", "name": { "family": "Benneke", "given": "Bj\u00f6rn" }, "orcid": "0000-0001-5578-1498" }, { "id": "Crockett-Nathan-R", "name": { "family": "Crockett", "given": "Nathan R." }, "orcid": "0000-0002-6586-7591" }, { "id": "Lockwood-Alexandra-C", "name": { "family": "Lockwood", "given": "Alexandra C." } }, { "id": "Blake-G-A", "name": { "family": "Blake", "given": "Geoffrey A." }, "orcid": "0000-0003-0787-1610" }, { "id": "Barman-Trvis-S", "name": { "family": "Barman", "given": "Travis S." }, "orcid": "0000-0002-7129-3002" }, { "id": "Bender-Chad-F", "name": { "family": "Bender", "given": "Chad F." }, "orcid": "0000-0003-4384-7220" }, { "id": "Deming-Drake", "name": { "family": "Deming", "given": "Drake" }, "orcid": "0000-0001-5727-4094" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John A." }, "orcid": "0000-0001-9808-7172" } ] }, "title": "Ground- and Space-based Detection of the Thermal Emission Spectrum of the Transiting Hot Jupiter KELT-2Ab", "ispublished": "pub", "full_text_status": "public", "keywords": "planets and satellites: atmospheres; techniques: spectroscopic", "note": "\u00a9 2018. The American Astronomical Society. \n\nReceived 2017 August 17; revised 2018 July 8; accepted 2018 July 26; published 2018 August 30. \n\nThe authors wish to recognize and acknowledge the very significant cultural role and reverence that the summit of MaunaKea has always had within the indigenous Hawaiian community. We are most fortunate to have the opportunity to conduct observations from this mountain. The data presented herein were obtained at the W. M. Keck Observatory, which is operated as a scientific partnership among the California Institute of Technology, the University of California and the National Aeronautics and Space Administration. The Observatory was made possible by the generous financial support of the W. M. Keck Foundation. This work is also based on observations made with the Spitzer Space Telescope, which is operated by the Jet Propulsion Laboratory, California Institute of Technology, under a contract with NASA. This work was partially supported by funding from the NSF Astronomy & Astrophysics and NASA Exoplanets Research Programs (grants AST-1109857 and NNX16AI14G, G.A.B., Principal Investigator (P. I.)). M.R.L would like to thank Richard Freedman and Roxana Lupu for providing pre-tabulated line-by-line absorption cross-sections, Paul Molliere, Ryan Garland, Joanna Barstow, Ingo Waldman, and Marco Rochetto for useful discussions regarding correlated-K, and Ty Robinson and Mark Marley for useful radiative-convective modeling discussions. H.A.K. acknowledges support from the Sloan Foundation. Lastly, we thank an anonymous reviewer for insightful comments that improved the content of this paper.\n\nPublished - Piskorz_2018_AJ_156_133.pdf
Accepted Version - 1809.05615.pdf
", "abstract": "We describe the detection of water vapor in the atmosphere of the transiting hot Jupiter KELT-2Ab by treating the star\u2013planet system as a spectroscopic binary with high-resolution, ground-based spectroscopy. We resolve the signal of the planet's motion with deep combined flux observations of the star and the planet. In total, six epochs of Keck NIRSPEC L-band observations were obtained, and the full data set was subjected to a cross-correlation analysis with a grid of self-consistent atmospheric models. We measure a radial projection of the Keplerian velocity, K_P , of 148 \u00b1 7 km s^(\u22121), consistent with transit measurements, and detect water vapor at 3.8\u03c3. We combine NIRSPEC L-band data with Spitzer IRAC secondary eclipse data to further probe the metallicity and carbon-to-oxygen ratio of KELT-2Ab's atmosphere. While the NIRSPEC analysis provides few extra constraints on the Spitzer data, it does provide roughly the same constraints on metallicity and carbon-to-oxygen ratio. This bodes well for future investigations of the atmospheres of non-transiting hot Jupiters.", "date": "2018-09", "date_type": "published", "publication": "Astronomical Journal", "volume": "156", "number": "3", "publisher": "American Astronomical Society", "pagerange": "Art. No. 133", "id_number": "CaltechAUTHORS:20180830-145509534", "issn": "1538-3881", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20180830-145509534", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "W. M. Keck Foundation" }, { "agency": "NASA/JPL/Caltech" }, { "agency": "NSF", "grant_number": "AST-1109857" }, { "agency": "NASA", "grant_number": "NNX16AI14G" }, { "agency": "Alfred P. Sloan Foundation" } ] }, "local_group": { "items": [ { "id": "Astronomy-Department" }, { "id": "Division-of-Geological-and-Planetary-Sciences" } ] }, "doi": "10.3847/1538-3881/aad781", "primary_object": { "basename": "1809.05615.pdf", "url": "https://authors.library.caltech.edu/records/1aapq-h5h60/files/1809.05615.pdf" }, "related_objects": [ { "basename": "Piskorz_2018_AJ_156_133.pdf", "url": "https://authors.library.caltech.edu/records/1aapq-h5h60/files/Piskorz_2018_AJ_156_133.pdf" } ], "resource_type": "article", "pub_year": "2018", "author_list": "Piskorz, Danielle; Buzard, Cam; et el." }, { "id": "https://authors.library.caltech.edu/records/7v2pp-vfx28", "eprint_id": 84066, "eprint_status": "archive", "datestamp": "2023-08-19 07:34:54", "lastmod": "2023-10-18 14:39:26", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Petigura-E-A", "name": { "family": "Petigura", "given": "Erik A." }, "orcid": "0000-0003-0967-2893" }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "Geoffrey W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Winn-J-N", "name": { "family": "Winn", "given": "Joshua N." }, "orcid": "0000-0002-4265-047X" }, { "id": "Weiss-L-M", "name": { "family": "Weiss", "given": "Lauren M." }, "orcid": "0000-0002-3725-3058" }, { "id": "Fulton-B-J", "name": { "family": "Fulton", "given": "Benjamin J." }, "orcid": "0000-0003-3504-5316" }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "Andrew W." }, "orcid": "0000-0001-8638-0320" }, { "id": "Sinukoff-E", "name": { "family": "Sinukoff", "given": "Evan" }, "orcid": "0000-0002-5658-0601" }, { "id": "Isaacson-H-T", "name": { "family": "Isaacson", "given": "Howard" }, "orcid": "0000-0002-0531-1073" }, { "id": "Morton-T-D", "name": { "family": "Morton", "given": "Timothy D." }, "orcid": "0000-0002-8537-5711" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" } ] }, "title": "The California-Kepler Survey. IV. Metal-rich Stars Host a Greater Diversity of Planets", "ispublished": "pub", "full_text_status": "public", "keywords": "methods: statistical \u2013 planets and satellites: formation \u2013 planets and satellites: general \u2013 stars: abundances \u2013 stars: fundamental parameters \u2013 techniques: spectroscopic", "note": "\u00a9 2018 The American Astronomical Society. \n\nReceived 2017 October 24; revised 2017 December 23; accepted 2017 December 27; published 2018 January 29. \n\nThe CKS project was conceived, planned, and initiated by A.W.H., G.W.M., J.A.J., H.T.I., and T.D.M. A.W.H., G.W.M., J.A.J. acquired Keck telescope time to conduct the magnitude-limited survey. We thank the many observers who contributed to the measurements reported here.\n\nWe thank the referee, Lars Buchhave, for his detailed and thoughtful comments on the techniques and interpretations. We also thank Konstantin Batygin, Brendan Bowler, Ian Crossfield, and Eve Lee for enlightening conversations that improved the final manuscript. \n\nKepler was competitively selected as the tenth NASA Discovery mission. Funding for this mission is provided by the NASA Science Mission Directorate. We thank the Kepler Science Office, the Science Operations Center, the Threshold Crossing Event Review Team (TCERT), and the Follow-up Observations Program (FOP) Working Group for their work on all steps in the planet discovery process, ranging from selecting target stars and pointing the Kepler telescope to developing and running the photometric pipeline to curating and refining the catalogs of Kepler planets. \n\nThe Guoshoujing Telescope (the Large Sky Area Multi-Object Fiber Spectroscopic Telescope, LAMOST) is a National Major Scientific Project built by the Chinese Academy of Sciences. Funding for the project has been provided by the National Development and Reform Commission. LAMOST is operated and managed by the National Astronomical Observatories, Chinese Academy of Sciences. \n\nE.A.P. acknowledges support from Hubble Fellowship grant HST-HF2-51365.001-A, awarded by the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., for NASA under contract NAS 5-26555. L.M.W. acknowledges support from Gloria and Ken Levy and from the Trottier Family. T.D.M. acknowledges NASA grant NNX14AE11G. \n\nThis work made use of NASA's Astrophysics Data System Bibliographic Services. \n\nFinally, the authors wish to recognize and acknowledge the very significant cultural role and reverence that the summit of Maunakea has always had within the indigenous Hawaiian community. We are most fortunate to have the opportunity to conduct observations from this mountain. \n\nSoftware: All code used in this paper is available at https://github.com/California-Planet-Search/cksmet/. We made use of the following publicly available Python modules: astropy (Astropy Collaboration et al. 2013), isoclassify (Huber et al. 2017), lmfit (Newville et al. 2014), matplotlib (Hunter 2007), numpy/scipy (van der Walt et al. 2011), pandas (McKinney 2010), and pinky (https://github.com/pgromano/pinky).\n\nPublished - Petigura_2018_AJ_155_89.pdf
Submitted - 1712.04042.pdf
", "abstract": "Probing the connection between a star's metallicity and the presence and properties of any associated planets offers an observational link between conditions during the epoch of planet formation and mature planetary systems. We explore this connection by analyzing the metallicities of Kepler target stars and the subset of stars found to host transiting planets. After correcting for survey incompleteness, we measure planet occurrence: the number of planets per 100 stars with a given metallicity M. Planet occurrence correlates with metallicity for some, but not all, planet sizes and orbital periods. For warm super-Earths having P = 10\u2013100 days and R_P = 1.0\u20131.7 R\u2295, planet occurrence is nearly constant over metallicities spanning \u22120.4 to +0.4 dex. We find 20 warm super-Earths per 100 stars, regardless of metallicity. In contrast, the occurrence of warm sub-Neptunes (R_P= 1.7\u20134.0 R\u2295) doubles over that same metallicity interval, from 20 to 40 planets per 100 stars. We model the distribution of planets as df \u221d 10^(\u03b2M) dM, where \u03b2 characterizes the strength of any metallicity correlation. This correlation steepens with decreasing orbital period and increasing planet size. For warm super-Earths \u03b2 = -0.3^(+0.2)_(-0.2), while for hot Jupiters \u03b2 = +3.4^(+0.9)_(-0.8). High metallicities in protoplanetary disks may increase the mass of the largest rocky cores or the speed at which they are assembled, enhancing the production of planets larger than 1.7 R\u2295. The association between high metallicity and short-period planets may reflect disk density profiles that facilitate the inward migration of solids or higher rates of planet\u2013planet scattering.", "date": "2018-02", "date_type": "published", "publication": "Astronomical Journal", "volume": "155", "number": "2", "publisher": "American Astronomical Society", "pagerange": "Art. No. 89", "id_number": "CaltechAUTHORS:20180103-141600568", "issn": "1538-3881", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20180103-141600568", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "Chinese Academy of Sciences" }, { "agency": "National Development and Reform Commission (China)" }, { "agency": "National Astronomical Observatories, Chinese Academy of Sciences (NAOC)" }, { "agency": "NASA Hubble Fellowship", "grant_number": "HST-HF2-51365.001-A" }, { "agency": "NASA", "grant_number": "NAS 5-26555" }, { "agency": "Gloria and Ken Levy" }, { "agency": "Trottier Family Foundation" }, { "agency": "NASA", "grant_number": "NNX14AE11G" } ] }, "local_group": { "items": [ { "id": "Infrared-Processing-and-Analysis-Center-(IPAC)" }, { "id": "Astronomy-Department" } ] }, "doi": "10.3847/1538-3881/aaa54c", "primary_object": { "basename": "1712.04042.pdf", "url": "https://authors.library.caltech.edu/records/7v2pp-vfx28/files/1712.04042.pdf" }, "related_objects": [ { "basename": "Petigura_2018_AJ_155_89.pdf", "url": "https://authors.library.caltech.edu/records/7v2pp-vfx28/files/Petigura_2018_AJ_155_89.pdf" } ], "resource_type": "article", "pub_year": "2018", "author_list": "Petigura, Erik A.; Marcy, Geoffrey W.; et el." }, { "id": "https://authors.library.caltech.edu/records/vyjq8-47w39", "eprint_id": 78400, "eprint_status": "archive", "datestamp": "2023-08-19 04:50:24", "lastmod": "2023-10-26 00:04:14", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Petigura-E-A", "name": { "family": "Petigura", "given": "Erik A." }, "orcid": "0000-0003-0967-2893" }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "Andrew W." }, "orcid": "0000-0001-8638-0320" }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "Geoffrey W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" }, { "id": "Isaacson-H-T", "name": { "family": "Isaacson", "given": "Howard" }, "orcid": "0000-0002-0531-1073" }, { "id": "Cargile-P-A", "name": { "family": "Cargile", "given": "Phillip A." } }, { "id": "Hebb-L", "name": { "family": "Hebb", "given": "Leslie" }, "orcid": "0000-0003-1263-8637" }, { "id": "Fulton-B-J", "name": { "family": "Fulton", "given": "Benjamin J." }, "orcid": "0000-0003-3504-5316" }, { "id": "Weiss-L-M", "name": { "family": "Weiss", "given": "Lauren M." }, "orcid": "0000-0002-3725-3058" }, { "id": "Morton-T-D", "name": { "family": "Morton", "given": "Timothy D." }, "orcid": "0000-0002-8537-5711" }, { "id": "Winn-J-N", "name": { "family": "Winn", "given": "Joshua N." }, "orcid": "0000-0002-4265-047X" }, { "id": "Rogers-L-A", "name": { "family": "Rogers", "given": "Leslie A." }, "orcid": "0000-0003-0638-3455" }, { "id": "Sinukoff-E", "name": { "family": "Sinukoff", "given": "Evan" }, "orcid": "0000-0002-5658-0601" }, { "id": "Hirsch-L-A", "name": { "family": "Hirsch", "given": "Lea A." }, "orcid": "0000-0001-8058-7443" }, { "id": "Crossfield-I-J-M", "name": { "family": "Crossfield", "given": "Ian J. M." }, "orcid": "0000-0002-1835-1891" } ] }, "title": "The California-Kepler Survey. I. High Resolution Spectroscopy of 1305 Stars Hosting Kepler Transiting Planets", "ispublished": "pub", "full_text_status": "public", "keywords": "binaries: spectroscopic \u2013 catalogs \u2013 stars: abundances \u2013 stars: fundamental parameters", "note": "\u00a9 2017 American Astronomical Society.\n\nReceived 2017 March 30; revised 2017 June 13; accepted 2017 June 14; published 2017 August 24.\n\nThe CKS project was conceived, planned, and initiated by AWH, GWM, JAJ, HTI, and TDM. AWH, GWM, JAJ acquired Keck telescope time to conduct the magnitude-limited survey. Keck time for the other stellar samples was acquired by JNW, LAR, and GWM. The observations were coordinated by HTI and AWH and carried out by AWH, HTI, GWM, JAJ, TDM, BJF, LMW, EAP, ES, and LAH. AWH secured CKS project funding. SpecMatch was developed and run by EAP and SME@XSEDE was developed and run by LH and PAC. Downstream data products were developed by EAP, HTI, and BJF. Results from the two pipelines were consolidated and the integrity of the parameters were verified by AWH, HTI, EAP, GWM, with assistance from BJF, LMW, ES, LAH, and IJMC. This manuscript was largely written by AWH and EAP with significant assistance from HTI, JNW, and GWM. \n\nWe thank Jason Rowe, Dan Huber, Jeff Valenti, Natalie Batalha, and David Ciardi for helpful conversations and Roberto Sanchis-Ojeda for his work on the Ultra-Short Period planet sample. We thank the many observers who contributed to the measurements reported here. PAC and LH thank Jeff Valenti, and Eric Stempels for their extensive help in running SME and developing the SME implementation presented in this paper. \n\nWe gratefully acknowledge the efforts and dedication of the Keck Observatory staff, especially Randy Campbell, Scott Dahm, Greg Doppmann, Marc Kassis, Jim Lyke, Hien Tran, Josh Walawender, Greg Wirth for support of HIRES and of remote observing. Most of the data presented herein were obtained at the W. M. Keck Observatory, which is operated as a scientific partnership among the California Institute of Technology, the University of California, and NASA. We are grateful to the time assignment committees of the University of Hawaii, the University of California, the California Institute of Technology, and NASA for their generous allocations of observing time that enabled this large project. Kepler was competitively selected as the tenth NASA Discovery mission. Funding for this mission is provided by the NASA Science Mission Directorate. We thank the Kepler Science Office, the Science Operations Center, Threshold Crossing Event Review Team (TCERT), and the Follow-up Observations Program (FOP) Working Group for their work on all steps in the planet discovery process ranging from selecting target stars and pointing the Kepler telescope to developing and running the photometric pipeline to curating and refining the catalogs of Kepler planets. We specifically thank Natalie Batalha, William Borucki, and David Ciardi in particular, for selecting stars in the Habitable Zone sample. \n\nEAP acknowledges support from Hubble Fellowship grant HST-HF2-51365.001-A awarded by the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc. for NASA under contract NAS 5-26555. AWH acknowledges NASA grant NNX12AJ23G. TDM acknowledges NASA grant NNX14AE11G. PAC acknowledges National Science Foundation grant AST-1109612. LH acknowledges National Science Foundation grant AST-1009810. LMW acknowledges support from Gloria and Ken Levy and from the Trottier Family. ES is supported by a post-graduate scholarship from the Natural Sciences and Engineering Research Council of Canada. IJMC performed his work under contract with the Jet Propulsion Laboratory (JPL) funded by NASA through the Sagan Fellowship Program executed by the NASA Exoplanet Science Institute. Work by JNW was partly supported by a NASA Keck PI Data Award, administered by the NASA Exoplanet Science Institute. This work made use of the SIMBAD database (operated at CDS, Strasbourg, France), NASA's Astrophysics Data System Bibliographic Services, and the NASA Exoplanet Archive, which is operated by the California Institute of Technology, under contract with the National Aeronautics and Space Administration under the Exoplanet Exploration Program. LAR gratefully acknowledges support provided by NASA through Hubble Fellowship grant #HF-51313 awarded by the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., for NASA, under contract NAS 5-26555. This work was performed in part under contract with the Jet Propulsion Laboratory (JPL) \nfunded by NASA through the Sagan Fellowship Program executed by the NASA Exoplanet Science Institute. Finally, the authors wish to recognize and acknowledge the very significant cultural role and reverence that the summit of Maunakea has always had within the indigenous Hawaiian community. We are most fortunate to have the opportunity to conduct observations from this mountain.\n\nFacilities: Keck:I (HIRES), Kepler.\n\nPublished - Petigura_2017_AJ_154_107.pdf
Submitted - 1703.10400.pdf
", "abstract": "The California-Kepler Survey (CKS) is an observational program to improve our knowledge of the properties of stars found to host transiting planets by NASA's Kepler Mission. The improvement stems from new high-resolution optical spectra obtained using HIRES at the W. M. Keck Observatory. The CKS stellar sample comprises 1305 stars classified as Kepler Objects of Interest, hosting a total of 2075 transiting planets. The primary sample is magnitude-limited (K_p < 14.2) and contains 960 stars with 1385 planets. The sample was extended to include some fainter stars that host multiple planets, ultra short period planets, or habitable zone planets. The spectroscopic parameters were determined with two different codes, one based on template matching and the other on direct spectral synthesis using radiative transfer. We demonstrate a precision of 60 K in T_(eff), 0.10 dex in surface gravity, 0.04 dex in [Fe/H], and 1.0 km s^(-1) in projected rotational velocity. In this paper we describe the CKS project and present a uniform catalog of spectroscopic parameters. Subsequent papers in this series present catalogs of derived stellar properties such as mass, radius and age; revised planet properties; and statistical explorations of the ensemble. CKS is the largest survey to determine the properties of Kepler stars using a uniform set of high-resolution, high signal-to-noise ratio spectra. The HIRES spectra are available to the community for independent analyses.", "date": "2017-09", "date_type": "published", "publication": "Astronomical Journal", "volume": "154", "number": "3", "publisher": "American Astronomical Society", "pagerange": "Art. No. 107", "id_number": "CaltechAUTHORS:20170621-091730611", "issn": "1538-3881", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20170621-091730611", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA Hubble Fellowship", "grant_number": "HST-HF2-51365.001-A" }, { "agency": "NASA", "grant_number": "NAS 5-26555" }, { "agency": "NASA", "grant_number": "NNX12AJ23G" }, { "agency": "NASA", "grant_number": "NNX14AE11G" }, { "agency": "NSF", "grant_number": "AST-1109612" }, { "agency": "NSF", "grant_number": "AST-1009810" }, { "agency": "Gloria and Ken Levy" }, { "agency": "Trottier Family Foundation" }, { "agency": "Natural Sciences and Engineering Research Council of Canada (NSERC)" }, { "agency": "NASA/JPL/Caltech" }, { "agency": "NASA Hubble Fellowship", "grant_number": "HF-51313" }, { "agency": "NASA Sagan Fellowship" } ] }, "local_group": { "items": [ { "id": "Astronomy-Department" } ] }, "doi": "10.3847/1538-3881/aa80de", "primary_object": { "basename": "Petigura_2017_AJ_154_107.pdf", "url": "https://authors.library.caltech.edu/records/vyjq8-47w39/files/Petigura_2017_AJ_154_107.pdf" }, "related_objects": [ { "basename": "1703.10400.pdf", "url": "https://authors.library.caltech.edu/records/vyjq8-47w39/files/1703.10400.pdf" } ], "resource_type": "article", "pub_year": "2017", "author_list": "Petigura, Erik A.; Howard, Andrew W.; et el." }, { "id": "https://authors.library.caltech.edu/records/9np6q-24911", "eprint_id": 78401, "eprint_status": "archive", "datestamp": "2023-08-19 04:50:31", "lastmod": "2023-10-26 00:04:17", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" }, { "id": "Petigura-E-A", "name": { "family": "Petigura", "given": "Erik A." }, "orcid": "0000-0003-0967-2893" }, { "id": "Fulton-B-J", "name": { "family": "Fulton", "given": "Benjamin J." }, "orcid": "0000-0003-3504-5316" }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "Geoffrey W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "Andrew W." }, "orcid": "0000-0001-8638-0320" }, { "id": "Isaacson-H-T", "name": { "family": "Isaacson", "given": "Howard" }, "orcid": "0000-0002-0531-1073" }, { "id": "Hebb-L", "name": { "family": "Hebb", "given": "Leslie" }, "orcid": "0000-0003-1263-8637" }, { "id": "Cargile-P-A", "name": { "family": "Cargile", "given": "Phillip A." } }, { "id": "Morton-T-D", "name": { "family": "Morton", "given": "Timothy D." }, "orcid": "0000-0002-8537-5711" }, { "id": "Weiss-L-M", "name": { "family": "Weiss", "given": "Lauren M." }, "orcid": "0000-0002-3725-3058" }, { "id": "Winn-J-N", "name": { "family": "Winn", "given": "Joshua N." }, "orcid": "0000-0002-4265-047X" }, { "id": "Rogers-L-A", "name": { "family": "Rogers", "given": "Leslie A." }, "orcid": "0000-0003-0638-3455" }, { "id": "Sinukoff-E", "name": { "family": "Sinukoff", "given": "Evan" }, "orcid": "0000-0002-5658-0601" }, { "id": "Hirsch-L-A", "name": { "family": "Hirsch", "given": "Lea A." }, "orcid": "0000-0001-8058-7443" } ] }, "title": "The California-Kepler Survey. II. Precise Physical Properties of 2025 Kepler Planets and Their Host Stars", "ispublished": "pub", "full_text_status": "public", "keywords": "planets and satellites: fundamental parameters \u2013 planets and satellites: general \u2013 stars: abundances \u2013\nstars: fundamental parameters \u2013 techniques: spectroscopic", "note": "\u00a9 2017 American Astronomical Society.\n\nReceived 2017 March 30; revised 2017 June 2; accepted 2017 June 14; published 2017 August 24.\n\nThe CKS project was conceived, planned, and initiated\nby AWH, GWM, JAJ, HTI, and TDM. AWH, GWM, JAJ acquired Keck telescope time to conduct the magnitude-limited survey. Keck time for the other stellar samples was acquired by JNW, LAR, and GWM. The observations were coordinated by HTI and AWH and carried out by AWH, HTI, GWM, JAJ, TDM, BJF, LMW, EAP, ES, and LAH. AWH secured CKS project funding. SpecMatch was developed and run by EAP and SME@XSEDE was developed and run by LH and PAC. EAP computed derived planetary and stellar properties with assistance from BJF. This manuscript was largely written by EAP with significant assistance from AWH, GWM, and BJF. \n\nWe thank Jason Rowe, Dan Huber, and Jeff Valenti for helpful conversations and Roberto Sanchis-Ojeda for his work on the Ultra-Short Period planet sample. We thank the many observers who contributed to the measurements reported here. We gratefully acknowledge the efforts and dedication of the Keck Observatory staff, especially Randy Campbell, Scott Dahm, Greg Doppmann, Marc Kassis, Jim Lyke, Hien Tran, Josh Walawender, Greg Wirth for support of HIRES and of remote observing. Most of the data presented here are based on spectra obtained at the W. M. Keck Observatory, which is operated as a scientific partnership among the California Institute of Technology, the University of California, and NASA. We are grateful to the time assignment committees of the University of Hawaii, the University of California, the California Institute of Technology, and NASA for their generous allocations of observing time that enabled this large project. Kepler was competitively selected as the tenth NASA Discovery mission. Funding for this mission is provided by the NASA Science Mission Directorate. We thank the, the Kepler Science Office, the Science Operations Center, Threshold Crossing Event Review Team (TCERT), and the Followup Observations Program (FOP) Working Group for their work on all steps in the planet discovery process ranging from selecting target stars and pointing the Kepler telescope to developing and running the photometric pipeline to curating and refining the catalogs of Kepler planets. E. A. P. acknowledges support from Hubble Fellowship grant HST-HF2-51365.001-A awarded by the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc. for NASA under contract NAS 5-26555. A. W. H. acknowledges NASA grant NNX12AJ23G. P. A. C. acknowledges National Science Foundation grant AST-1109612. T. D. M. acknowledges NASA grant NNX14AE11G. P. A. C. acknowledges National Science Foundation grant AST-1109612. L. H. acknowledges National Science Foundation grant AST-1009810. L. M. W. acknowledges support from Gloria and Ken Levy and from the the Trottier Family. E. S. is supported by a post-graduate scholarship from the Natural Sciences and Engineering Research Council of Canada. This work made use of the SIMBAD database (operated at CDS, Strasbourg, France), NASA's Astrophysics Data System Bibliographic Services, and the NASA Exoplanet Archive, which is operated by the California Institute of Technology, under contract with the National Aeronautics and Space Administration under the Exoplanet Exploration Program. Finally, the authors wish to recognize and acknowledge the very significant cultural role and reverence that the summit of Maunakea has always had within the indigenous Hawaiian community. We are most fortunate to have the opportunity to conduct observations from this mountain. \n\nFacilities: Keck:I (HIRES), Kepler.\n\nPublished - Johnson_2017_AJ_154_108.pdf
Submitted - 1703.10402.pdf
", "abstract": "We present stellar and planetary properties for 1305 Kepler Objects of Interest (KOIs) hosting 2025 planet candidates observed as part of the California-Kepler Survey. We combine spectroscopic constraints, presented in Paper I, with stellar interior modeling to estimate stellar masses, radii, and ages. Stellar radii are typically constrained to 11%, compared to 40% when only photometric constraints are used. Stellar masses are constrained to 4%, and ages are constrained to 30%. We verify the integrity of the stellar parameters through comparisons with asteroseismic studies and Gaia parallaxes. We also recompute planetary radii for 2025 planet candidates. Because knowledge of planetary radii is often limited by uncertainties in stellar size, we improve the uncertainties in planet radii from typically 42% to 12%. We also leverage improved knowledge of stellar effective temperature to recompute incident stellar fluxes for the planets, now precise to 21%, compared to a factor of two when derived from photometry.", "date": "2017-09", "date_type": "published", "publication": "Astronomical Journal", "volume": "154", "number": "3", "publisher": "American Astronomical Society", "pagerange": "Art. No. 108", "id_number": "CaltechAUTHORS:20170621-093412676", "issn": "1538-3881", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20170621-093412676", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA Hubble Fellowship", "grant_number": "HST-HF2-51365.001-A" }, { "agency": "NASA", "grant_number": "NAS 5-26555" }, { "agency": "NASA", "grant_number": "NNX12AJ23G" }, { "agency": "NSF", "grant_number": "AST-1109612" }, { "agency": "NASA", "grant_number": "NNX14AE11G" }, { "agency": "NSF", "grant_number": "AST-1109612" }, { "agency": "NSF", "grant_number": "AST-1009810" }, { "agency": "Gloria and Ken Levy" }, { "agency": "Trottier Family Foundation" }, { "agency": "Natural Sciences and Engineering Research Council of Canada (NSERC)" }, { "agency": "NASA/Caltech" } ] }, "local_group": { "items": [ { "id": "Infrared-Processing-and-Analysis-Center-(IPAC)" }, { "id": "Astronomy-Department" } ] }, "doi": "10.3847/1538-3881/aa80e7", "primary_object": { "basename": "1703.10402.pdf", "url": "https://authors.library.caltech.edu/records/9np6q-24911/files/1703.10402.pdf" }, "related_objects": [ { "basename": "Johnson_2017_AJ_154_108.pdf", "url": "https://authors.library.caltech.edu/records/9np6q-24911/files/Johnson_2017_AJ_154_108.pdf" } ], "resource_type": "article", "pub_year": "2017", "author_list": "Johnson, John Asher; Petigura, Erik A.; et el." }, { "id": "https://authors.library.caltech.edu/records/t4v0e-ekv21", "eprint_id": 78399, "eprint_status": "archive", "datestamp": "2023-08-19 04:50:16", "lastmod": "2023-10-26 00:04:12", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Fulton-B-J", "name": { "family": "Fulton", "given": "Benjamin J." }, "orcid": "0000-0003-3504-5316" }, { "id": "Petigura-E-A", "name": { "family": "Petigura", "given": "Erik A." }, "orcid": "0000-0003-0967-2893" }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "Andrew W." }, "orcid": "0000-0001-8638-0320" }, { "id": "Isaacson-H-T", "name": { "family": "Isaacson", "given": "Howard" }, "orcid": "0000-0002-0531-1073" }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "Geoffrey W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Cargile-P-A", "name": { "family": "Cargile", "given": "Phillip A." } }, { "id": "Hebb-L", "name": { "family": "Hebb", "given": "Leslie" }, "orcid": "0000-0003-1263-8637" }, { "id": "Weiss-L-M", "name": { "family": "Weiss", "given": "Lauren M." }, "orcid": "0000-0002-3725-3058" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" }, { "id": "Morton-T-D", "name": { "family": "Morton", "given": "Timothy D." }, "orcid": "0000-0002-8537-5711" }, { "id": "Sinukoff-E", "name": { "family": "Sinukoff", "given": "Evan" }, "orcid": "0000-0002-5658-0601" }, { "id": "Crossfield-I-J-M", "name": { "family": "Crossfield", "given": "Ian J. M." }, "orcid": "0000-0002-1835-1891" }, { "id": "Hirsch-L-A", "name": { "family": "Hirsch", "given": "Lea A." }, "orcid": "0000-0001-8058-7443" } ] }, "title": "The California-Kepler Survey. III. A Gap in the Radius Distribution of Small Planets", "ispublished": "pub", "full_text_status": "public", "keywords": "planetary systems", "note": "\u00a9 2017 The American Astronomical Society.\n\nReceived 2017 March 30; revised 2017 June 1; accepted 2017 June 4; published 2017 August 24.\n\nFacilities: Keck:I (HIRES) - , Kepler - .\n\nThe CKS project was conceived, planned, and initiated by A.W.H., G.W.M., J.A.J., H.T.I., and T.D.M. A.W.H., G.W.M., J.A.J. acquired Keck telescope time to conduct the magnitude-limited survey. Keck time for the other stellar samples was acquired by J.N.W., L.A.R., and G.W.M. The observations were coordinated by H.T.I. and A.W.H. and carried out by A.W.H., H.T.I., G.W.M., J.A.J., T.D.M., B.J.F., L.M.W., E.A.P., E.S., and L.A.H. A.W.H. secured CKS project funding. SpecMatch was developed and run by EAP and SME@XSEDE was developed and run by L.H. and P.A.C. Downstream data products were developed by E.A.P., H.T.I., and B.J.F. Results from the two pipelines were consolidated and the integrity of the parameters were verified by A.W.H., H.T.I., E.A.P., G.W.M., with assistance from B.J.F., L.M.W., E.S., L.A.H., and I.J.M.C. E.A.P. computed derived planetary and stellar properties with assistance from B.J.F. B.J.F. performed the analysis in this paper, with assistance from E.A.P., A.W.H., and G.W.M. This manuscript was largely written by B.J.F. with assistance from E.A.P., A.W.H., G.W.M., J.N.W., and L.M.W.\n\nWe thank Josh Winn, Jason Rowe, Eric Lopez, Jeff Valenti, Daniel Huber, and Leslie Rogers for contributing insight during many helpful conversations and providing comments on early drafts of the manuscript. Most of the data presented here were determined directly from observations at the W. M. Keck Observatory, which is operated as a scientific partnership among the California Institute of Technology, the University of California, and NASA. We are grateful to the time assignment committees of the University of Hawaii, the University of California, the California Institute of Technology, and NASA for their generous allocations of observing time that enabled this large project. Kepler was competitively selected as the tenth NASA Discovery mission. Funding for this mission is provided by the NASA Science Mission Directorate. B.J.F. acknowledges that this material is based upon work supported by the National Science Foundation Graduate Research Fellowship under grant No. 2014184874. Any opinion, findings, and conclusions or recommendations expressed in this material are those of the authors and do not necessarily reflect the views of the National Science Foundation. E.A.P. acknowledges support from Hubble Fellowship grant HST-HF2-51365.001-A awarded by the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., for NASA under contract NAS 5-26555. A.W.H. acknowledges NASA grant NNX12AJ23G. T.D.M. acknowledges NASA grant NNX14AE11G. P.A.C. acknowledges National Science Foundation grant AST-1109612. L.H. acknowledges National Science Foundation grant AST-1009810. L.M.W. acknowledges support from Gloria and Ken Levy and from the Trottier Family. E.S. is supported by a post-graduate scholarship from the Natural Sciences and Engineering Research Council of Canada. Finally, the authors wish to recognize and acknowledge the very significant cultural role and reverence that the summit of Maunakea has always had within the indigenous Hawaiian community. We are most fortunate to have the opportunity to conduct observations from this mountain.\n\nSubmitted - 1703.10375.pdf
", "abstract": "The size of a planet is an observable property directly connected to the physics of its formation and evolution. We used precise radius measurements from the California-Kepler Survey to study the size distribution of 2025 Kepler planets in fine detail. We detect a factor of \u22652 deficit in the occurrence rate distribution at 1.5\u20132.0 R\u2295. This gap splits the population of close-in (P < 100 days) small planets into two size regimes: R_p < 1.5 R\u2295 and R_p = 2.0-3.0 R\u2295, with few planets in between. Planets in these two regimes have nearly the same intrinsic frequency based on occurrence measurements that account for planet detection efficiencies. The paucity of planets between 1.5 and 2.0 R\u2295 supports the emerging picture that close-in planets smaller than Neptune are composed of rocky cores measuring 1.5 R\u2295 or smaller with varying amounts of low-density gas that determine their total sizes.", "date": "2017-09", "date_type": "published", "publication": "Astronomical Journal", "volume": "154", "number": "3", "publisher": "American Astronomical Society", "pagerange": "Art. No. 109", "id_number": "CaltechAUTHORS:20170621-085537133", "issn": "1538-3881", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20170621-085537133", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NSF Graduate Research Fellowship", "grant_number": "2014184874" }, { "agency": "NASA Hubble Fellowship", "grant_number": "HST-HF2-51365.001-A" }, { "agency": "NASA", "grant_number": "NAS 5-26555" }, { "agency": "NASA", "grant_number": "NNX12AJ23G" }, { "agency": "NASA", "grant_number": "NNX14AE11G" }, { "agency": "NSF", "grant_number": "AST-1109612" }, { "agency": "NSF", "grant_number": "AST-1009810" }, { "agency": "Gloria and Ken Levy" }, { "agency": "Trottier Family Foundation" }, { "agency": "Natural Sciences and Engineering Research Council of Canada (NSERC)" } ] }, "local_group": { "items": [ { "id": "Astronomy-Department" } ] }, "doi": "10.3847/1538-3881/aa80eb", "primary_object": { "basename": "1703.10375.pdf", "url": "https://authors.library.caltech.edu/records/t4v0e-ekv21/files/1703.10375.pdf" }, "resource_type": "article", "pub_year": "2017", "author_list": "Fulton, Benjamin J.; Petigura, Erik A.; et el." }, { "id": "https://authors.library.caltech.edu/records/fwmpq-2k810", "eprint_id": 79664, "eprint_status": "archive", "datestamp": "2023-08-19 04:19:17", "lastmod": "2023-10-26 17:01:13", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Piskorz-D", "name": { "family": "Piskorz", "given": "Danielle" }, "orcid": "0000-0003-4451-2342" }, { "id": "Benneke-B", "name": { "family": "Benneke", "given": "Bj\u00f6rn" }, "orcid": "0000-0001-5578-1498" }, { "id": "Crockett-N-R", "name": { "family": "Crockett", "given": "Nathan R." }, "orcid": "0000-0002-6586-7591" }, { "id": "Lockwood-A-C", "name": { "family": "Lockwood", "given": "Alexandra C." } }, { "id": "Blake-G-A", "name": { "family": "Blake", "given": "Geoffrey A." }, "orcid": "0000-0003-0787-1610" }, { "id": "Barman-T-S", "name": { "family": "Barman", "given": "Travis S." }, "orcid": "0000-0002-7129-3002" }, { "id": "Bender-Chad-F", "name": { "family": "Bender", "given": "Chad F." }, "orcid": "0000-0003-4384-7220" }, { "id": "Carr-J-S", "name": { "family": "Carr", "given": "John S." }, "orcid": "0000-0002-6695-3977" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John A." }, "orcid": "0000-0001-9808-7172" } ] }, "title": "Detection of Water Vapor in the Thermal Spectrum of the Non-transiting Hot Jupiter Upsilon Andromedae b", "ispublished": "pub", "full_text_status": "public", "note": "\u00a9 2017 The American Astronomical Society. \n\nReceived 2017 February 22; revised 2017 June 16; accepted 2017 July 2; published 2017 August 1. \n\nThe authors thank an anonymous reviewer for useful comments and suggestions on this paper. The authors also thank Konstantin Batygin for guidance and insight into the stability of this planetary system and wish to recognize and acknowledge the very significant cultural role and reverence that the summit of Maunakea has always had within the indigenous Hawaiian community. We are most fortunate to have the opportunity to conduct observations from this mountain. The data presented herein were obtained at the WM Keck Observatory, which is operated as a scientific partnership among the California Institute of Technology, the University of California, and the National Aeronautics and Space Administration. The Observatory was made possible by the generous financial support of the WM Keck Foundation. This work was partially supported by funding from the NSF Astronomy & Astrophysics and NASA Exoplanets Research Programs (grants AST-1109857 and NNX16AI14G, G A Blake PI). Basic research in infrared astrophysics at the Naval Research Laboratory is supported by 6.1 base funding.\n\nPublished - Piskorz_2017_AJ_154_78.pdf
Submitted - 1707.01534.pdf
", "abstract": "The Upsilon Andromedae system was the first multi-planet system discovered orbiting a main-sequence star. We describe the detection of water vapor in the atmosphere of the innermost non-transiting gas giant ups And b by treating the star\u2013planet system as a spectroscopic binary with high-resolution, ground-based spectroscopy. We resolve the signal of the planet's motion and break the mass-inclination degeneracy for this non-transiting planet via deep combined flux observations of the star and the planet. In total, seven epochs of Keck NIRSPEC L band observations, three epochs of Keck NIRSPEC short-wavelength K band observations, and three epochs of Keck NIRSPEC long wavelength K band observations of the ups And system were obtained. We perform a multi-epoch cross-correlation of the full data set with an atmospheric model. We measure the radial projection of the Keplerian velocity (K_P = 55 \u00b1 9 km s\u22121), true mass (M_b = 1.7^(+0.33)_(-0.24) M_J), and orbital inclination (i_b 24\u00b0 \u00b1 4\u00b0), and determine that the planet's opacity structure is dominated by water vapor at the probed wavelengths. Dynamical simulations of the planets in the ups And system with these orbital elements for ups And b show that stable, long-term (100 Myr) orbital configurations exist. These measurements will inform future studies of the stability and evolution of the ups And system, as well as the atmospheric structure and composition of the hot Jupiter.", "date": "2017-08", "date_type": "published", "publication": "Astronomical Journal", "volume": "154", "number": "2", "publisher": "American Astronomical Society", "pagerange": "Art. No. 78", "id_number": "CaltechAUTHORS:20170801-091325018", "issn": "1538-3881", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20170801-091325018", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "W. M. Keck Foundation" }, { "agency": "NSF", "grant_number": "AST-1109857" }, { "agency": "NASA", "grant_number": "NNX16AI14G" }, { "agency": "Naval Research Laboratory", "grant_number": "6.1 Base funding" } ] }, "local_group": { "items": [ { "id": "Astronomy-Department" }, { "id": "Division-of-Geological-and-Planetary-Sciences" } ] }, "doi": "10.3847/1538-3881/aa7dd8", "primary_object": { "basename": "1707.01534.pdf", "url": "https://authors.library.caltech.edu/records/fwmpq-2k810/files/1707.01534.pdf" }, "related_objects": [ { "basename": "Piskorz_2017_AJ_154_78.pdf", "url": "https://authors.library.caltech.edu/records/fwmpq-2k810/files/Piskorz_2017_AJ_154_78.pdf" } ], "resource_type": "article", "pub_year": "2017", "author_list": "Piskorz, Danielle; Benneke, Bj\u00f6rn; et el." }, { "id": "https://authors.library.caltech.edu/records/fw0wd-tc609", "eprint_id": 72276, "eprint_status": "archive", "datestamp": "2023-08-22 19:15:58", "lastmod": "2023-10-23 20:34:52", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Piskorz-D", "name": { "family": "Piskorz", "given": "Danielle" }, "orcid": "0000-0003-4451-2342" }, { "id": "Benneke-B", "name": { "family": "Benneke", "given": "Bj\u00f6rn" }, "orcid": "0000-0001-5578-1498" }, { "id": "Crockett-N-R", "name": { "family": "Crockett", "given": "Nathan R." }, "orcid": "0000-0002-6586-7591" }, { "id": "Lockwood-A-C", "name": { "family": "Lockwood", "given": "Alexandra C." } }, { "id": "Blake-G-A", "name": { "family": "Blake", "given": "Geoffrey A." }, "orcid": "0000-0003-0787-1610" }, { "id": "Barman-T-S", "name": { "family": "Barman", "given": "Travis S." }, "orcid": "0000-0002-7129-3002" }, { "id": "Bender-Chad-F", "name": { "family": "Bender", "given": "Chad F." }, "orcid": "0000-0003-4384-7220" }, { "id": "Bryan-M-L", "name": { "family": "Bryan", "given": "Marta L." }, "orcid": "0000-0002-6076-5967" }, { "id": "Carr-J-S", "name": { "family": "Carr", "given": "John S." }, "orcid": "0000-0002-6695-3977" }, { "id": "Fischer-D-A", "name": { "family": "Fischer", "given": "Debra A." }, "orcid": "0000-0003-2221-0861" }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "Andrew W." }, "orcid": "0000-0001-8638-0320" }, { "id": "Isaacson-H-T", "name": { "family": "Isaacson", "given": "Howard" }, "orcid": "0000-0002-0531-1073" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John A." }, "orcid": "0000-0001-9808-7172" } ] }, "title": "Evidence for the Direct Detection of the Thermal Spectrum of the Non-Transiting Hot Gas Giant HD 88133 b", "ispublished": "pub", "full_text_status": "public", "keywords": "planets and satellites: atmospheres \u2013 techniques: spectroscopic", "note": "\u00a9 2016 The American Astronomical Society. \n\nReceived 2016 May 20; revised 2016 September 9; accepted 2016 September 27; published 2016 November 23. \n\nThe authors would like to thank Heather Knutson for helpful discussions throughout the preparation of this manuscript. The authors wish to recognize and acknowledge the very significant cultural role and reverence that the summit of Maunakea has always had within the indigenous Hawaiian community. We are most fortunate to have the opportunity to conduct observations from this mountain. The data presented herein were obtained at the W.M. Keck Observatory, which is operated as a scientific partnership among the California Institute of Technology, the University of California, and the National Aeronautics and Space Administration. The Observatory was made possible by the generous financial support of the W.M. Keck Foundation. This work was partially supported by funding from the NSF Astronomy & Astrophysics and NASA Exoplanets Research Programs (grants AST-1109857 and NNX16AI14G, G.A. Blake P.I.), and the Center for Exoplanets and Habitable Worlds, which is supported by the Pennsylvania State Unviersity, the Eberly College of Science, and the Pennsylvania Space Grant Consortium. Basic research in infrared astrophysics at the Naval Research Laboratory is supported by 6.1 base funding. Finally, we thank an anonymous reviewer for helpful insights which improved the content of this paper.\n\nPublished - Piskorz_2016_ApJ_832_131.pdf
Submitted - 1609.09074v1.pdf
", "abstract": "We target the thermal emission spectrum of the non-transiting gas giant HD 88133 b with high-resolution near-infrared spectroscopy, by treating the planet and its host star as a spectroscopic binary. For sufficiently deep summed flux observations of the star and planet across multiple epochs, it is possible to resolve the signal of the hot gas giant's atmosphere compared to the brighter stellar spectrum, at a level consistent with the aggregate shot noise of the full data set. To do this, we first perform a principal component analysis to remove the contribution of the Earth's atmosphere to the observed spectra. Then, we use a cross-correlation analysis to tease out the spectra of the host star and HD 88133 b to determine its orbit and identify key sources of atmospheric opacity. In total, six epochs of Keck NIRSPEC L-band observations and three epochs of Keck NIRSPEC K-band observations of the HD 88133 system were obtained. Based on an analysis of the maximum likelihood curves calculated from the multi-epoch cross-correlation of the full data set with two atmospheric models, we report the direct detection of the emission spectrum of the non-transiting exoplanet HD 88133 b and measure a radial projection of the Keplerian orbital velocity of 40 \u00b1 15 km s^(\u22121), a true mass of 1.02^(+0.61)_(-0.28)M_J, a nearly face-on orbital inclination of 15^(+6o)_(-5), and an atmosphere opacity structure at high dispersion dominated by water vapor. This, combined with 11 years of radial velocity measurements of the system, provides the most up-to-date ephemeris for HD 88133.", "date": "2016-12-01", "date_type": "published", "publication": "Astrophysical Journal", "volume": "832", "number": "2", "publisher": "American Astronomical Society", "pagerange": "Art. No. 131", "id_number": "CaltechAUTHORS:20161123-092049528", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20161123-092049528", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "W. M. Keck Foundation" }, { "agency": "NSF", "grant_number": "AST-1109857" }, { "agency": "NASA", "grant_number": "NNX16AI14G" }, { "agency": "Pennsylvania State Unviersity" }, { "agency": "Eberly College of Science" }, { "agency": "Pennsylvania Space Grant Consortium" }, { "agency": "Naval Research Laboratory", "grant_number": "6.1 Base funding" } ] }, "local_group": { "items": [ { "id": "Division-of-Geological-and-Planetary-Sciences" } ] }, "doi": "10.3847/0004-637X/832/2/131", "primary_object": { "basename": "1609.09074v1.pdf", "url": "https://authors.library.caltech.edu/records/fw0wd-tc609/files/1609.09074v1.pdf" }, "related_objects": [ { "basename": "Piskorz_2016_ApJ_832_131.pdf", "url": "https://authors.library.caltech.edu/records/fw0wd-tc609/files/Piskorz_2016_ApJ_832_131.pdf" } ], "resource_type": "article", "pub_year": "2016", "author_list": "Piskorz, Danielle; Benneke, Bj\u00f6rn; et el." }, { "id": "https://authors.library.caltech.edu/records/evdee-m8281", "eprint_id": 78367, "eprint_status": "archive", "datestamp": "2023-08-19 00:20:58", "lastmod": "2023-10-26 00:02:46", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Otor-O-J", "name": { "family": "Otor", "given": "Oderah Justin" } }, { "id": "Montet-B-T", "name": { "family": "Montet", "given": "Benjamin T." }, "orcid": "0000-0001-7516-8308" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" }, { "id": "Charbonneau-D", "name": { "family": "Charbonneau", "given": "David" }, "orcid": "0000-0002-9003-484X" }, { "id": "Collier-Cameron-A", "name": { "family": "Collier-Cameron", "given": "Andrew" }, "orcid": "0000-0002-8863-7828" }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "Andrew W." }, "orcid": "0000-0001-8638-0320" }, { "id": "Isaacson-H-T", "name": { "family": "Isaacson", "given": "Howard" }, "orcid": "0000-0002-0531-1073" }, { "id": "Latham-D-W", "name": { "family": "Latham", "given": "David W." }, "orcid": "0000-0001-9911-7388" }, { "id": "L\u00f3pez-Morales-M", "name": { "family": "L\u00f3pez-Morales", "given": "Mercedes" }, "orcid": "0000-0003-3204-8183" }, { "id": "Lovis-C", "name": { "family": "Lovis", "given": "Christophe" } }, { "id": "Mayor-M", "name": { "family": "Mayor", "given": "Michel" } }, { "id": "Micela-G", "name": { "family": "Micela", "given": "Giusi" }, "orcid": "0000-0002-9900-4751" }, { "id": "Molinari-E", "name": { "family": "Molinari", "given": "Emilio" } }, { "id": "Pepe-F", "name": { "family": "Pepe", "given": "Francesco" } }, { "id": "Piotto-G", "name": { "family": "Piotto", "given": "Giampaolo" } }, { "id": "Phillips-D-F", "name": { "family": "Phillips", "given": "David F." } }, { "id": "Queloz-D", "name": { "family": "Queloz", "given": "Didier" }, "orcid": "0000-0002-3012-0316" }, { "id": "Rice-K", "name": { "family": "Rice", "given": "Ken" } }, { "id": "Sasselov-D-D", "name": { "family": "Sasselov", "given": "Dimitar" }, "orcid": "0000-0001-7014-1771" }, { "id": "S\u00e9gransan-D", "name": { "family": "S\u00e9gransan", "given": "Damien" } }, { "id": "Sozzetti-A", "name": { "family": "Sozzetti", "given": "Alessandro" } }, { "id": "Udry-S", "name": { "family": "Udry", "given": "St\u00e9phane" } }, { "id": "Watson-C-A", "name": { "family": "Watson", "given": "Chris" } } ] }, "title": "The Orbit and Mass of the Third Planet in the Kepler-56 System", "ispublished": "pub", "full_text_status": "public", "keywords": "planets and satellites: fundamental parameters \u2013 planets and satellites: individual (Kepler-56) \u2013 techniques: radial velocities", "note": "\u00a9 2016 The American Astronomical Society. \n\nReceived 2016 August 10; revised 2016 September 17; accepted 2016 September 21; published 2016 November 15. \n\nWe thank Eric Agol, Daniel Fabrycky, and Daniel Huber for comments and conversations which improved the quality of this manuscript. \n\nO.J.O. thanks the members and friends of the Banneker Institute, who made the summer in which this project began a fruitful time. He also thanks Neta Bahcall for allowing him to continue this research as his senior thesis. He gratefully acknowledges support from the Banneker Institute and Princeton's astrophysics department, Class of 1984, and Office of the Dean of Undergraduate Students in facilitating travel to AAS 227 to present this research. He would be remiss to forget the other members of the Party of Three and their associates. \n\nB.T.M. is supported by the National Science Foundation Graduate Research Fellowship under Grant No. DGE1144469. \n\nJ.A.J. is supported by generous grants from the David and Lucile Packard Foundation and the Alfred P. Sloan Foundation. \n\nC.A.W. acknowledges support from STFC grant ST/L000709/1. \n\nThis publication was made possible through the support of a grant from the John Templeton Foundation. The opinions expressed in this publication are those of the authors and do not necessarily reflect the views of the John Templeton Foundation. This material is based upon work supported by the National Aeronautics and Space Administration under grant No. NNX15AC90G issued through the Exoplanets Research Program. \n\nThe research leading to these results has received funding from the European Union Seventh Framework Programme (FP7/2007-2013) under Grant Agreement No. 313014 (ETAEARTH). \n\nSome of the data presented herein were obtained at the W.M. Keck Observatory, which is operated as a scientific partnership among the California Institute of Technology, the University of California and the National Aeronautics and Space Administration. The Observatory was made possible by the generous financial support of the W.M. Keck Foundation. The authors wish to recognize and acknowledge the very significant cultural role and reverence that the summit of Maunakea has always had within the indigenous Hawaiian community. We are most fortunate to have the opportunity to conduct observations from this mountain. \n\nThe HARPS-N project was funded by the Prodex program of the Swiss Space Office (SSO), the Harvard University Origin of Life Initiative (HUOLI), the Scottish Universities Physics Alliance (SUPA), the University of Geneva, the Smithsonian Astrophysical Observatory (SAO), and the Italian National Astrophysical Institute (INAF), University of St. Andrews, Queens University Belfast, and University of Edinburgh. \n\nFacilities: Keck:I (HIRES) - , TNG (HARPS-N). -\n\nPublished - Otor_2016_AJ_152_165.pdf
Submitted - 1608.03627.pdf
", "abstract": "While the vast majority of multiple-planet systems have orbital angular momentum axes that align with the spin axis of their host star, Kepler-56 is an exception: its two transiting planets are coplanar yet misaligned by at least 40\u00b0 with respect to the rotation axis of their host star. Additional follow-up observations of Kepler-56 suggest the presence of a massive, non-transiting companion that may help explain this misalignment. We model the transit data along with Keck/HIRES and HARPS-N radial velocity data to update the masses of the two transiting planets and infer the physical properties of the third, non-transiting planet. We employ a Markov Chain Monte Carlo sampler to calculate the best-fitting orbital parameters and their uncertainties for each planet. We find the outer planet has a period of 1002 \u00b1 5 days and minimum mass of 5.61 \u00b1 0.38 M_(Jup). We also place a 95% upper limit of 0.80 m s^(\u22121) yr^(\u22121) on long-term trends caused by additional, more distant companions.", "date": "2016-12", "date_type": "published", "publication": "Astronomical Journal", "volume": "152", "number": "6", "publisher": "American Astronomical Society", "pagerange": "Art. No. 165", "id_number": "CaltechAUTHORS:20170620-092104954", "issn": "1538-3881", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20170620-092104954", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NSF Graduate Research Fellowship", "grant_number": "DGE-1144469" }, { "agency": "David and Lucile Packard Foundation" }, { "agency": "Alfred P. Sloan Foundation" }, { "agency": "Science and Technology Facilities Council (STFC)", "grant_number": "ST/L000709/1" }, { "agency": "John Templeton Foundation" }, { "agency": "NASA", "grant_number": "NNX15AC90G" }, { "agency": "European Research Council (ERC)", "grant_number": "313014 (ETAEARTH)" }, { "agency": "W. M. Keck Foundation" } ] }, "doi": "10.3847/0004-6256/152/6/165", "primary_object": { "basename": "1608.03627.pdf", "url": "https://authors.library.caltech.edu/records/evdee-m8281/files/1608.03627.pdf" }, "related_objects": [ { "basename": "Otor_2016_AJ_152_165.pdf", "url": "https://authors.library.caltech.edu/records/evdee-m8281/files/Otor_2016_AJ_152_165.pdf" } ], "resource_type": "article", "pub_year": "2016", "author_list": "Otor, Oderah Justin; Montet, Benjamin T.; et el." }, { "id": "https://authors.library.caltech.edu/records/pe32r-geg30", "eprint_id": 71678, "eprint_status": "archive", "datestamp": "2023-08-19 00:00:47", "lastmod": "2023-10-23 16:00:57", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Crepp-J-R", "name": { "family": "Crepp", "given": "Justin R." }, "orcid": "0000-0003-0800-0593" }, { "id": "Gonzales-E-J", "name": { "family": "Gonzales", "given": "Erica J." } }, { "id": "Bechter-E-B", "name": { "family": "Bechter", "given": "Eric B." } }, { "id": "Montet-B-T", "name": { "family": "Montet", "given": "Benjamin T." }, "orcid": "0000-0001-7516-8308" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" }, { "id": "Piskorz-D", "name": { "family": "Piskorz", "given": "Danielle" }, "orcid": "0000-0003-4451-2342" }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "Andrew W." }, "orcid": "0000-0001-8638-0320" }, { "id": "Isaacson-H-T", "name": { "family": "Isaacson", "given": "Howard" }, "orcid": "0000-0002-0531-1073" } ] }, "title": "The TRENDS High-contrast Imaging Survey. VI. Discovery of a Mass, Age, and Metallicity Benchmark Brown Dwarf", "ispublished": "pub", "full_text_status": "public", "keywords": "astrometry \u2013 stars: individual (HD 4747) \u2013 techniques: high angular resolution \u2013 techniques: radial velocities", "note": "\u00a9 2016 American Astronomical Society. \n\nReceived 2016 March 26; revised 2016 May 20; accepted 2016 June 3; published 2016 November 3. \n\nWe thank the many California Planet Search observers for help over the years securing precise RV measurements that ultimately led to the direct imaging discovery of HD 4747 B. Chris Matthews estimated the L' apparent magnitude of HD 4747 A by fitting an SED to its flux measured at visible and near-infrared wavelengths. This work was supported by a NASA Keck PI Data Award, administered by the NASA Exoplanet Science Institute. Data presented herein were obtained at the W. M. Keck Observatory from telescope time allocated to the National Aeronautics and Space Administration through the agency's scientific partnership with the California Institute of Technology and the University of California. The Observatory was made possible by the generous financial support of the W. M. Keck Foundation. B.T.M. is supported by the National Science Foundation Graduate Research Fellowship under grant No. DGE-1144469. The TRENDS high-contrast imaging program is supported in part by NASA Origins grant NNX13AB03G and PI Crepp's NASA Early Career Fellowship. We are also grateful for the vision and support of the Potenziani family.\n\nPublished - Crepp_2016_ApJ_831_136.pdf
Submitted - 1604.00398v2.pdf
", "abstract": "The mass and age of substellar objects are degenerate parameters leaving the evolutionary state of brown dwarfs ambiguous without additional information. Theoretical models are normally used to help distinguish between old, massive brown dwarfs and young, low-mass brown dwarfs but these models have yet to be properly calibrated. We have carried out an infrared high-contrast imaging program with the goal of detecting substellar objects as companions to nearby stars to help break degeneracies in inferred physical properties such as mass, age, and composition. Rather than using imaging observations alone, our targets are pre-selected based on the existence of dynamical accelerations informed from years of stellar radial velocity (RV) measurements. In this paper, we present the discovery of a rare benchmark brown dwarf orbiting the nearby (d = 18.69 \u00b1 0.19 pc), solar-type (G9V) star HD 4747 ([Fe/H] = \u22120.22 \u00b1 0.04) with a projected separation of only \u03c1 = 11.3 \u00b1 0.2 au (\u03b8 = 0\".6). Precise Doppler measurements taken over 18 years reveal the companion's orbit and allow us to place strong constraints on its mass using dynamics (m sin i = 55.3 \u00b1 1.9M_(Jup)). Relative photometry (\u0394K_s = 9.05 \u00b1 0.14, M_K_s = 13.00 \u00b1 0.14, K_s \u2013 L' = 1.34 \u00b1 0.46) indicates that HD 4747 B is most likely a late-type L-dwarf and, if near the L/T transition, an intriguing source for studying cloud physics, variability, and polarization. We estimate a model-dependent mass of m = 72^(+3)_(-13) M_(Jup) for an age of 3.3^(+2.3)_(-1.9) Gyr based on gyrochronology. Combining astrometric measurements with RV data, we calculate the companion dynamical mass (m = 60.2 \u00b1 3.3M_(Jup)) and orbit (e = 0.740 \u00b1 0.002) directly. As a new mass, age, and metallicity benchmark, HD 4747 B will serve as a laboratory for precision astrophysics to test theoretical models that describe the emergent radiation of brown dwarfs.", "date": "2016-11-10", "date_type": "published", "publication": "Astrophysical Journal", "volume": "831", "number": "2", "publisher": "American Astronomical Society", "pagerange": "Art. No. 136", "id_number": "CaltechAUTHORS:20161102-133237424", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20161102-133237424", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "W. M. Keck Foundation" }, { "agency": "NSF Graduate Research Fellowship", "grant_number": "DGE-1144469" }, { "agency": "NASA", "grant_number": "NNX13AB03G" } ] }, "collection": "CaltechAUTHORS", "doi": "10.3847/0004-637X/831/2/136", "primary_object": { "basename": "1604.00398v2.pdf", "url": "https://authors.library.caltech.edu/records/pe32r-geg30/files/1604.00398v2.pdf" }, "related_objects": [ { "basename": "Crepp_2016_ApJ_831_136.pdf", "url": "https://authors.library.caltech.edu/records/pe32r-geg30/files/Crepp_2016_ApJ_831_136.pdf" } ], "resource_type": "article", "pub_year": "2016", "author_list": "Crepp, Justin R.; Gonzales, Erica J.; et el." }, { "id": "https://authors.library.caltech.edu/records/pb26v-fqt67", "eprint_id": 69588, "eprint_status": "archive", "datestamp": "2023-08-20 14:00:17", "lastmod": "2023-10-20 20:13:32", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Gao-Peter", "name": { "family": "Gao", "given": "Peter" }, "orcid": "0000-0002-8518-9601" }, { "id": "Plavchan-P", "name": { "family": "Plavchan", "given": "P." }, "orcid": "0000-0002-8864-1667" }, { "id": "Gagn\u00e9-J", "name": { "family": "Gagn\u00e9", "given": "J." }, "orcid": "0000-0002-2592-9612" }, { "id": "Furlan-E", "name": { "family": "Furlan", "given": "E." }, "orcid": "0000-0001-9800-6248" }, { "id": "Bottom-M", "name": { "family": "Bottom", "given": "M." }, "orcid": "0000-0003-1341-5531" }, { "id": "Anglada-Escud\u00e9-G", "name": { "family": "Anglada-Escud\u00e9", "given": "G." }, "orcid": "0000-0002-3645-5977" }, { "id": "White-R", "name": { "family": "White", "given": "R." } }, { "id": "Davison-C-L", "name": { "family": "Davison", "given": "C. L." } }, { "id": "Beichman-C-A", "name": { "family": "Beichman", "given": "C." }, "orcid": "0000-0002-5627-5471" }, { "id": "Brinkworth-C-S", "name": { "family": "Brinkworth", "given": "C." } }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "J." }, "orcid": "0000-0001-9808-7172" }, { "id": "Ciardi-D-R", "name": { "family": "Ciardi", "given": "D." }, "orcid": "0000-0002-5741-3047" }, { "id": "Wallace-K", "name": { "family": "Wallace", "given": "K." } }, { "id": "Mennesson-B", "name": { "family": "Mennesson", "given": "B." }, "orcid": "0000-0003-4205-4800" }, { "id": "von-Braun-K", "name": { "family": "von Braun", "given": "K." }, "orcid": "0000-0002-5823-4630" }, { "id": "Vasisht-G", "name": { "family": "Vasisht", "given": "G." }, "orcid": "0000-0002-1871-6264" }, { "id": "Prato-L-A", "name": { "family": "Prato", "given": "L." } }, { "id": "Kane-S-R", "name": { "family": "Kane", "given": "S. R." }, "orcid": "0000-0002-7084-0529" }, { "id": "Tanner-A-M", "name": { "family": "Tanner", "given": "A." }, "orcid": "0000-0002-2903-2140" }, { "id": "Crawford-T-J", "name": { "family": "Crawford", "given": "T. J." } }, { "id": "Latham-D-W", "name": { "family": "Latham", "given": "D." }, "orcid": "0000-0001-9911-7388" }, { "id": "Rougeot-R", "name": { "family": "Rougeot", "given": "R." } }, { "id": "Geneser-C-S", "name": { "family": "Geneser", "given": "C. S." } }, { "id": "Catanzarite-J-H", "name": { "family": "Catanzarite", "given": "J." } } ] }, "title": "Retrieval of Precise Radial Velocities from Near-infrared High-resolution Spectra of Low-mass Stars", "ispublished": "pub", "full_text_status": "public", "keywords": "methods: data analysis planets and satellites: detection techniques: radial velocities", "note": "\u00a9 2016. The Astronomical Society of the Pacific. \n\nReceived 2015 November 16; accepted 2016 March 18; published 2016 August 12. \n\nWe thank K. Sung, S. Crawford, B. Drouin, E. Garcia-Berrios, N.S. Lewis, S. Mills, and S. Lin for their effort in the building and setting up of the methane isotopologue gas cell. We thank B. Walp for his help with data collection at NASA IRTF. We thank J. Rayner, L. Bergknut, B. Bus, and the telescope operators at NASA IRTF for their help throughout this project. This work uses observations obtained at NASA IRTF through program numbers 2010B022, 2011A083, 2011B083, and 2012B021. This work was supported in part by a JPL Research and Technology Development Grant and the JPL Center for Exoplanet Science. Additional support includes the Venus Express program via NASA NNX10AP80G grant to the California Institute of Technology, and an NAI Virtual Planetary Laboratory grant from the University of Washington to the Jet Propulsion Laboratory and California Institute of Technology under solicitation NNH12ZDA002C and cooperative agreement number NNA13AA93A. The authors recognize and acknowledge the very significant cultural role and reverence that the summit of Mauna Kea has always had within the indigenous Hawaiian community. We are most fortunate to have the opportunity to conduct observations from this mountain.\n\nSubmitted - 1603.05997v1.pdf
", "abstract": "Given that low-mass stars have intrinsically low luminosities at optical wavelengths and a propensity for stellar activity, it is advantageous for radial velocity (RV) surveys of these objects to use near-infrared (NIR) wavelengths. In this work, we describe and test a novel RV extraction pipeline dedicated to retrieving RVs from low-mass stars using NIR spectra taken by the CSHELL spectrograph at the NASA Infrared Telescope Facility, where a methane isotopologue gas cell is used for wavelength calibration. The pipeline minimizes the residuals between the observations and a spectral model composed of templates for the target star, the gas cell, and atmospheric telluric absorption; models of the line-spread function, continuum curvature, and sinusoidal fringing; and a parameterization of the wavelength solution. The stellar template is derived iteratively from the science observations themselves without a need for separate observations dedicated to retrieving it. Despite limitations from CSHELL's narrow wavelength range and instrumental systematics, we are able to (1) obtain an RV precision of 35 m s^(\u22121) for the RV standard star GJ 15 A over a time baseline of 817 days, reaching the photon noise limit for our attained signal-to-noise ratio; (2) achieve ~3 m s^(\u22121) RV precision for the M giant SV Peg over a baseline of several days and confirm its long-term RV trend due to stellar pulsations, as well as obtain nightly noise floors of ~2\u20136 m s^(\u22121); and (3) show that our data are consistent with the known masses, periods, and orbital eccentricities of the two most massive planets orbiting GJ 876. Future applications of our pipeline to RV surveys using the next generation of NIR spectrographs, such as iSHELL, will enable the potential detection of super-Earths and mini-Neptunes in the habitable zones of M dwarfs.", "date": "2016-10", "date_type": "published", "publication": "Publications of the Astronomical Society of the Pacific", "volume": "128", "number": "968", "publisher": "Astronomical Society of the Pacific", "pagerange": "Art. No. 104501", "id_number": "CaltechAUTHORS:20160812-103134550", "issn": "0004-6280", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20160812-103134550", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNX10AP80G" }, { "agency": "University of Washington" }, { "agency": "NASA", "grant_number": "NNH12ZDA002C" }, { "agency": "NASA", "grant_number": "NNA13AA93A" } ] }, "local_group": { "items": [ { "id": "Infrared-Processing-and-Analysis-Center-(IPAC)" } ] }, "doi": "10.1088/1538-3873/128/968/104501", "primary_object": { "basename": "1603.05997v1.pdf", "url": "https://authors.library.caltech.edu/records/pb26v-fqt67/files/1603.05997v1.pdf" }, "resource_type": "article", "pub_year": "2016", "author_list": "Gao, Peter; Plavchan, P.; et el." }, { "id": "https://authors.library.caltech.edu/records/w3p4n-gec81", "eprint_id": 68897, "eprint_status": "archive", "datestamp": "2023-08-22 18:28:55", "lastmod": "2024-02-02 21:07:04", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Ngo-Henry-Hoang-Khoi-Exoplanets", "name": { "family": "Ngo", "given": "Henry" }, "orcid": "0000-0001-5172-4859" }, { "id": "Knutson-H-A", "name": { "family": "Knutson", "given": "Heather A." }, "orcid": "0000-0002-5375-4725" }, { "id": "Hinkley-S", "name": { "family": "Hinkley", "given": "Sasha" }, "orcid": "0000-0001-8074-2562" }, { "id": "Bryan-M-L", "name": { "family": "Bryan", "given": "Marta" }, "orcid": "0000-0002-6076-5967" }, { "id": "Crepp-J-R", "name": { "family": "Crepp", "given": "Justin R." }, "orcid": "0000-0003-0800-0593" }, { "id": "Batygin-K", "name": { "family": "Batygin", "given": "Konstantin" }, "orcid": "0000-0002-7094-7908" }, { "id": "Crossfield-I-J-M", "name": { "family": "Crossfield", "given": "Ian" }, "orcid": "0000-0002-1835-1891" }, { "id": "Hansen-B-M-S", "name": { "family": "Hansen", "given": "Brad" }, "orcid": "0000-0001-7840-3502" }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "Andrew W." }, "orcid": "0000-0001-8638-0320" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John A." }, "orcid": "0000-0001-9808-7172" }, { "id": "Mawet-D", "name": { "family": "Mawet", "given": "Dimitri" }, "orcid": "0000-0002-8895-4735" }, { "id": "Morton-T-D", "name": { "family": "Morton", "given": "Timothy D." }, "orcid": "0000-0002-8537-5711" }, { "id": "Muirhead-P-S", "name": { "family": "Muirhead", "given": "Philip S." }, "orcid": "0000-0002-0638-8822" }, { "id": "Wang-Ji", "name": { "family": "Wang", "given": "Ji" }, "orcid": "0000-0002-4361-8885" } ] }, "title": "Friends of Hot Jupiters. IV. Stellar companions beyond 50 AU might facilitate giant planet formation, but most are unlikely to cause Kozai-Lidov migration", "ispublished": "pub", "full_text_status": "public", "keywords": "binaries: close \u2013 binaries: eclipsing \u2013 methods: observational \u2013 planetary systems \u2013 planets and satellites: dynamical evolution and stability \u2013 techniques: high angular resolution", "note": "\u00a9 2016 The American Astronomical Society. \n\nReceived 2016 May 16; revised 2016 June 16; accepted 2016 June 17; published 2016 August 3. \n\nThis work was supported by NASA grant NNX14AD24G. H.N. is grateful for funding support from the Natural Sciences and Engineering Research Council of Canada and the NASA Earth and Space Science Fellowship Program grant NNX15AR12H. \n\nThis work was based on observations at the W. M. Keck Observatory granted by the California Institute of Technology. We thank the observers who contributed to the measurements reported here and acknowledge the efforts of the Keck Observatory staff. We extend special thanks to those of Hawaiian ancestry on whose sacred mountain of Mauna Kea we are privileged to be guests. \n\nFacility: Keck:II (NIRC2) - KECK II Telescope.\n\nPublished - Ngo_2016_ApJ_827_8.pdf
Submitted - 1606.07102v1.pdf
", "abstract": "Stellar companions can influence the formation and evolution of planetary systems, but there are currently few observational constraints on the properties of planet-hosting binary star systems. We search for stellar companions around 77 transiting hot Jupiter systems to explore the statistical properties of this population of companions as compared to field stars of similar spectral type. After correcting for survey incompleteness, we find that 47% \u00b1 7% of hot Jupiter systems have stellar companions with semimajor axes between 50 and 2000 au. This is 2.9 times larger than the field star companion fraction in this separation range, with a significance of 4.4\u03c3. In the 1\u201350 au range, only 3.9^(+4.5)_(-2.0)% of hot Jupiters host stellar companions, compared to the field star value of 16.4% \u00b1 0.7%, which is a 2.7\u03c3 difference. We find that the distribution of mass ratios for stellar companions to hot Jupiter systems peaks at small values and therefore differs from that of field star binaries which tend to be uniformly distributed across all mass ratios. We conclude that either wide separation stellar binaries are more favorable sites for gas giant planet formation at all separations, or that the presence of stellar companions preferentially causes the inward migration of gas giant planets that formed farther out in the disk via dynamical processes such as Kozai\u2013Lidov oscillations. We determine that less than 20% of hot Jupiters have stellar companions capable of inducing Kozai\u2013Lidov oscillations assuming initial semimajor axes between 1 and 5 au, implying that the enhanced companion occurrence is likely correlated with environments where gas giants can form efficiently.", "date": "2016-08-10", "date_type": "published", "publication": "Astrophysical Journal", "volume": "827", "number": "1", "publisher": "American Astronomical Society", "pagerange": "Art. No. 8", "id_number": "CaltechAUTHORS:20160707-153537679", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20160707-153537679", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNX14AD24G" }, { "agency": "Natural Sciences and Engineering Research Council of Canada (NSERC)" }, { "agency": "NASA Earth and Space Science Fellowship", "grant_number": "NNX15AR12H" } ] }, "local_group": { "items": [ { "id": "Division-of-Geological-and-Planetary-Sciences" } ] }, "doi": "10.3847/0004-637X/827/1/8", "primary_object": { "basename": "1606.07102v1.pdf", "url": "https://authors.library.caltech.edu/records/w3p4n-gec81/files/1606.07102v1.pdf" }, "related_objects": [ { "basename": "Ngo_2016_ApJ_827_8.pdf", "url": "https://authors.library.caltech.edu/records/w3p4n-gec81/files/Ngo_2016_ApJ_827_8.pdf" } ], "resource_type": "article", "pub_year": "2016", "author_list": "Ngo, Henry; Knutson, Heather A.; et el." }, { "id": "https://authors.library.caltech.edu/records/bgh91-wwv05", "eprint_id": 70261, "eprint_status": "archive", "datestamp": "2023-08-20 12:49:56", "lastmod": "2023-10-20 22:04:18", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Vanderburg-A", "name": { "family": "Vanderburg", "given": "Andrew" }, "orcid": "0000-0001-7246-5438" }, { "id": "Plavchan-P", "name": { "family": "Plavchan", "given": "Peter" }, "orcid": "0000-0002-8864-1667" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" }, { "id": "Ciardi-D-R", "name": { "family": "Ciardi", "given": "David R." }, "orcid": "0000-0002-5741-3047" }, { "id": "Swift-J-J", "name": { "family": "Swift", "given": "Jonathan J." }, "orcid": "0000-0002-9486-818X" }, { "id": "Kane-S-R", "name": { "family": "Kane", "given": "Stephen R." }, "orcid": "0000-0002-7084-0529" } ] }, "title": "Radial velocity planet detection biases at the stellar rotational period", "ispublished": "pub", "full_text_status": "public", "keywords": "planets and satellites: detection techniques: radial velocities", "note": "\u00a9 2016 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society. \n\nAccepted 2016 April 11. Received 2016 April 11; in original form 2016 January 21. \n\nWe are grateful to Howard Isaacson and Amy McQuillan for helpful advice. We thank Juliette Becker, Thayne Currie, Jonathan Gagn\u00e9, Peter Gao, and Angelle Tanner for their helpful comments on an early draft of the manuscript. We thank the referee, Suzanne Aigrain, for a thoughtful and detailed report which significantly improved this work. This research has made use of NASA's Astrophysics Data System, the SIMBAD data base, operated at CDS, Strasbourg, France, as well as the NASA Exoplanet Archive, which is operated by the California Institute of Technology, under contract with the National Aeronautics and Space Administration under the Exoplanet Exploration Program. AV is supported by the NSF Graduate Research Fellowship, Grant No. DGE 1144152. JAJ is supported by generous grants from the David and Lucille Packard Foundation and the Alfred P. Sloan Foundation.\n\nPublished - MNRAS-2016-Vanderburg-3565-73.pdf
Submitted - 1604.03143v1.pdf
", "abstract": "Future generations of precise radial velocity (RV) surveys aim to achieve sensitivity sufficient to detect Earth mass planets orbiting in their stars' habitable zones. A major obstacle to this goal is astrophysical radial velocity noise caused by active areas moving across the stellar limb as a star rotates. In this paper, we quantify how stellar activity impacts exoplanet detection with radial velocities as a function of orbital and stellar rotational periods. We perform data-driven simulations of how stellar rotation affects planet detectability and compile and present relations for the typical timescale and amplitude of stellar radial velocity noise as a function of stellar mass. We show that the characteristic timescales of quasi-periodic radial velocity jitter from stellar rotational modulations coincides with the orbital period of habitable zone exoplanets around early M-dwarfs. These coincident periods underscore the importance of monitoring the targets of RV habitable zone planet surveys through simultaneous photometric measurements for determining rotation periods and activity signals, and mitigating activity signals using spectroscopic indicators and/or RV measurements at different wavelengths.", "date": "2016-07-11", "date_type": "published", "publication": "Monthly Notices of the Royal Astronomical Society", "volume": "459", "number": "4", "publisher": "Royal Astronomical Society", "pagerange": "3565-3573", "id_number": "CaltechAUTHORS:20160912-074538405", "issn": "0035-8711", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20160912-074538405", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA/JPL/Caltech" }, { "agency": "NSF Graduate Research Fellowship", "grant_number": "DGE-1144152" }, { "agency": "David and Lucille Packard Foundation" }, { "agency": "Alfred P. Sloan Foundation" } ] }, "local_group": { "items": [ { "id": "Infrared-Processing-and-Analysis-Center-(IPAC)" } ] }, "doi": "10.1093/mnras/stw863", "primary_object": { "basename": "1604.03143v1.pdf", "url": "https://authors.library.caltech.edu/records/bgh91-wwv05/files/1604.03143v1.pdf" }, "related_objects": [ { "basename": "MNRAS-2016-Vanderburg-3565-73.pdf", "url": "https://authors.library.caltech.edu/records/bgh91-wwv05/files/MNRAS-2016-Vanderburg-3565-73.pdf" } ], "resource_type": "article", "pub_year": "2016", "author_list": "Vanderburg, Andrew; Plavchan, Peter; et el." }, { "id": "https://authors.library.caltech.edu/records/7300k-h8e16", "eprint_id": 67564, "eprint_status": "archive", "datestamp": "2023-08-22 17:56:51", "lastmod": "2023-10-18 21:17:38", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Montet-B-T", "name": { "family": "Montet", "given": "Benjamin T." }, "orcid": "0000-0001-7516-8308" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" }, { "id": "Fortney-J-J", "name": { "family": "Fortney", "given": "Jonathan J." }, "orcid": "0000-0002-9843-4354" }, { "id": "Desert-J-M", "name": { "family": "Desert", "given": "Jean-Michel" }, "orcid": "0000-0002-0875-8401" } ] }, "title": "Benchmark Transiting Brown Dwarf LHS 6343 C: Spitzer Secondary Eclipse Observations Yield Brightness Temperature and Mid-T Spectral Class", "ispublished": "pub", "full_text_status": "public", "keywords": "binaries: eclipsing; brown dwarfs; stars: late-type; stars: low-mass", "note": "\u00a9 2016 American Astronomical Society. \n\nReceived 2016 January 2; revised 2016 March 28; accepted 2016 March 29; published 2016 April 22. \n\nWe thank the referee, Adam Burgasser, for his thorough referee report which considerably improved the quality of this paper. We thank Drake Deming for providing an early draft of his 2015 paper and a version of the underlying code. We thank Sarah Ballard and Dan Foreman-Mackey for conversations about Spitzer data analysis and Mark Marley and Jackie Faherty for very helpful comments on an early draft of this paper which significantly improved its quality.\n\nThis work is based on observations made with the Spitzer Space Telescope, which is operated by the Jet Propulsion Laboratory, California Institute of Technology under a contract with NASA. Support for this work was provided by NASA through an award issued by JPL/Caltech. \n\nB.T.M. is supported by the National Science Foundation Graduate Research Fellowship under Grant No. DGE-1144469. J.A.J. is supported by generous grants from the David and Lucile Packard Foundation and the Alfred P. Sloan Foundation. \n\nFacility: Spitzer (IRAC). - Spitzer Space Telescope satellite\n\nPublished - apjl_822_1_L6.pdf
Submitted - 1603.09343v1.pdf
", "abstract": "There are no field brown dwarf analogs with measured masses, radii, and luminosities, precluding our ability to connect the population of transiting brown dwarfs with measurable masses and radii and field brown dwarfs with measurable luminosities and atmospheric properties. LHS 6343 C, a weakly irradiated brown dwarf transiting one member of an M+M binary in the Kepler field, provides the first opportunity to probe the atmosphere of a non-inflated brown dwarf with a measured mass and radius. Here, we analyze four Spitzer observations of secondary eclipses of LHS 6343 C behind LHS 6343 A. Jointly fitting the eclipses with a Gaussian process noise model of the instrumental systematics, we measure eclipse depths of 1.06 \u00b1 0.21 ppt at 3.6 \u03bcm and 2.09 \u00b1 0.08 ppt at 4.5 \u03bcm, corresponding to brightness temperatures of 1026 \u00b1 57 K and 1249 \u00b1 36 K, respectively. We then apply brown dwarf evolutionary models to infer a bolometric luminosity log(L_*/L_\u2609)= -5.16 \u00b1 0.04. Given the known physical properties of the brown dwarf and the two M dwarfs in the LHS 6343 system, these depths are consistent with models of a 1100 K T dwarf at an age of 5 Gyr and empirical observations of field T5-6 dwarfs with temperatures of 1070 \u00b1 130 K. We investigate the possibility that the orbit of LHS 6343 C has been altered by the Kozai\u2013Lidov mechanism and propose additional astrometric or Rossiter\u2013McLaughlin measurements of the system to probe the dynamical history of the system.", "date": "2016-05-01", "date_type": "published", "publication": "Astrophysical Journal Letters", "volume": "822", "number": "1", "publisher": "American Astronomical Society", "pagerange": "Art. No. L6", "id_number": "CaltechAUTHORS:20160602-073306283", "issn": "2041-8205", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20160602-073306283", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA/JPL/Caltech" }, { "agency": "NSF Graduate Research Fellowship", "grant_number": "DGE-1144469" }, { "agency": "David and Lucile Packard Foundation" }, { "agency": "Alfred P. Sloan Foundation" } ] }, "local_group": { "items": [ { "id": "Infrared-Processing-and-Analysis-Center-(IPAC)" } ] }, "doi": "10.3847/2041-8205/822/1/L6", "primary_object": { "basename": "1603.09343v1.pdf", "url": "https://authors.library.caltech.edu/records/7300k-h8e16/files/1603.09343v1.pdf" }, "related_objects": [ { "basename": "apjl_822_1_L6.pdf", "url": "https://authors.library.caltech.edu/records/7300k-h8e16/files/apjl_822_1_L6.pdf" } ], "resource_type": "article", "pub_year": "2016", "author_list": "Montet, Benjamin T.; Johnson, John Asher; et el." }, { "id": "https://authors.library.caltech.edu/records/9ga7g-8y380", "eprint_id": 64143, "eprint_status": "archive", "datestamp": "2023-08-22 17:48:31", "lastmod": "2024-02-02 21:04:27", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Bryan-M-L", "name": { "family": "Bryan", "given": "Marta L." }, "orcid": "0000-0002-6076-5967" }, { "id": "Knutson-H-A", "name": { "family": "Knutson", "given": "Heather A." }, "orcid": "0000-0002-5375-4725" }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "Andrew W." }, "orcid": "0000-0001-8638-0320" }, { "id": "Ngo-Henry-Hoang-Khoi-Exoplanets", "name": { "family": "Ngo", "given": "Henry" }, "orcid": "0000-0001-5172-4859" }, { "id": "Batygin-K", "name": { "family": "Batygin", "given": "Konstantin" }, "orcid": "0000-0002-7094-7908" }, { "id": "Crepp-J-R", "name": { "family": "Crepp", "given": "Justin R." }, "orcid": "0000-0003-0800-0593" }, { "id": "Fulton-B-J", "name": { "family": "Fulton", "given": "B. J." }, "orcid": "0000-0003-3504-5316" }, { "id": "Hinkley-S", "name": { "family": "Hinkley", "given": "Sasha" }, "orcid": "0000-0001-8074-2562" }, { "id": "Isaacson-H-T", "name": { "family": "Isaacson", "given": "Howard" }, "orcid": "0000-0002-0531-1073" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John A." }, "orcid": "0000-0001-9808-7172" }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "Geoffry W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Wright-J-T", "name": { "family": "Wright", "given": "Jason T." }, "orcid": "0000-0001-6160-5888" } ] }, "title": "Statistics of Long Period Gas Giant Planets in Known Planetary Systems", "ispublished": "pub", "full_text_status": "public", "keywords": "planetary systems; methods: statistical; techniques: radial velocities", "note": "\u00a9 2016 The American Astronomical Society. \n\nReceived 2015 June 15; accepted 2016 January 22; published 2016 April 14. \n \nWe thank David Hogg and Ben Montet for helpful conversations. This work was supported by NASA grant NNX14AD24G, and was based on observations at the W. M. Keck Observatory granted by the University of Hawaii, the University of California, the California Institute of Technology, Yale University, and NASA. We thank the observers who contributed to the measurements reported here and acknowledge the efforts of the Keck Observatory staff. We extend special thanks to those of Hawaiian ancestry on whose sacred mountain of Mauna Kea we are privileged to be guests.\n\nPublished - apj_821_2_89.pdf
Submitted - 1601.07595v2.pdf
", "abstract": "We conducted a Doppler survey at Keck combined with NIRC2 K-band adaptive optics (AO) imaging to search for massive, long-period companions to 123 known exoplanet systems with one or two planets detected using the radial velocity (RV) method. Our survey is sensitive to Jupiter-mass planets out to 20 au for a majority of stars in our sample, and we report the discovery of eight new long-period planets, in addition to 20 systems with statistically significant RV trends that indicate the presence of an outer companion beyond 5 au. We combine our RV observations with AO imaging to determine the range of allowed masses and orbital separations for these companions, and account for variations in our sensitivity to companions among stars in our sample. We estimate the total occurrence rate of companions in our sample to be 52 \u00b1 5% over the range 1\u201320 M_(Jup) and 5\u201320 au. Our data also suggest a declining frequency for gas giant planets in these systems beyond 3\u201310 au, in contrast to earlier studies that found a rising frequency for giant planets in the range 0.01\u20133 au. This suggests either that the frequency of gas giant planets peaks between 3 and 10 au, or that outer companions in these systems have a different semi-major axis distribution than the overall population of gas giant planets. Our results also suggest that hot gas giants may be more likely to have an outer companion than cold gas giants. We find that planets with an outer companion have higher average eccentricities than their single counterparts, suggesting that dynamical interactions between planets may play an important role in these systems.", "date": "2016-04-20", "date_type": "published", "publication": "Astrophysical Journal", "volume": "821", "number": "2", "publisher": "American Astronomical Society", "pagerange": "Art. No. 89", "id_number": "CaltechAUTHORS:20160201-200104533", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20160201-200104533", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNX14AD24G" } ] }, "local_group": { "items": [ { "id": "Division-of-Geological-and-Planetary-Sciences" } ] }, "doi": "10.3847/0004-637X/821/2/89", "primary_object": { "basename": "1601.07595v2.pdf", "url": "https://authors.library.caltech.edu/records/9ga7g-8y380/files/1601.07595v2.pdf" }, "related_objects": [ { "basename": "apj_821_2_89.pdf", "url": "https://authors.library.caltech.edu/records/9ga7g-8y380/files/apj_821_2_89.pdf" } ], "resource_type": "article", "pub_year": "2016", "author_list": "Bryan, Marta L.; Knutson, Heather A.; et el." }, { "id": "https://authors.library.caltech.edu/records/6aqq9-gck80", "eprint_id": 68646, "eprint_status": "archive", "datestamp": "2023-08-22 17:49:15", "lastmod": "2023-10-19 22:24:11", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Yee-Jennifer-C", "name": { "family": "Yee", "given": "Jennifer C." }, "orcid": "0000-0001-9481-7123" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" }, { "id": "Skowron-J", "name": { "family": "Skowron", "given": "Jan" }, "orcid": "0000-0002-2335-1730" }, { "id": "Gould-A-P", "name": { "family": "Gould", "given": "Andrew" } }, { "id": "Pineda-J-S", "name": { "family": "Pineda", "given": "J. Sebastian" }, "orcid": "0000-0002-4489-0135" }, { "id": "Eastman-J-D", "name": { "family": "Eastman", "given": "Jason" }, "orcid": "0000-0003-3773-5142" }, { "id": "Vanderburg-A", "name": { "family": "Vanderburg", "given": "Andrew" }, "orcid": "0000-0001-7246-5438" }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "Andrew W." }, "orcid": "0000-0001-8638-0320" } ] }, "title": "Two Stars Two Ways: Confirming a Microlensing Binary Lens Solution with a Spectroscopic Measurement of the Orbit", "ispublished": "pub", "full_text_status": "public", "keywords": "binaries: general; binaries: spectroscopic; gravitational lensing: micro; techniques: radial velocities", "note": "\u00a9 2016 The American Astronomical Society. Received 2015 June 3; accepted 2016 March 8; published 2016 April 20.\n\nThe authors would like to thank Josh Simon, Ian Czekala,\nAlicia Soderberg, and Atish Kamble for their assistance in\nobtaining RV data from Magellan. Work by JCY was\nperformed under contract with the California Institute of\nTechnology (Caltech)/Jet Propulsion Laboratory (JPL) funded\nby NASA through the Sagan Fellowship Program executed by\nthe NASA Exoplanet Science Institute. AG was supported by\nNSF grant AST 1103471 and NASA grant NNX12AB99G.\nJSP was supported by a grant from the National Science\nFoundation Graduate Research Fellowship under grant no.\nDGE-1144469. AV is supported by the National Science\nFoundation Graduate Research Fellowship, Grant No. DGE\n1144152. This paper includes data gathered with the 6.5 m Magellan Telescopes located at Las Campanas Observatory, Chile. Some of the data presented herein were obtained at the W.M. Keck Observatory, which is operated as a scientific partnership among the California Institute of Technology, the University of California and the National Aeronautics and Space Administration. The Observatory was made possible by the generous financial support of the W.M. Keck Foundation. The authors wish to recognize and acknowledge the very significant cultural role and reverence that the summit of Mauna Kea has always\nhad within the indigenous Hawaiian community. We are most\nfortunate to have the opportunity to conduct observations from this mountain.\n\nFacilities: Keck:I (HIRES), Magellan:Clay (MIKE).\n\nPublished - apj_821_2_121.pdf
Submitted - 1506.01441v1.pdf
", "abstract": "Light curves of microlensing events involving stellar binaries and planetary systems can provide information about the orbital elements of the system due to orbital modulations of the caustic structure. Accurately measuring the orbit in either the stellar or planetary case requires detailed modeling of subtle deviations in the light curve. At the same time, the natural, Cartesian parameterization of a microlensing binary is partially degenerate with the microlens parallax. Hence, it is desirable to perform independent tests of the predictions of microlens orbit models using radial velocity (RV) time series of the lens binary system. To this end, we present 3.5 years of RV monitoring of the binary lens system OGLE-2009-BLG-020 L, for which Skowron et al. constrained all internal parameters of the 200\u2013700 day orbit. Our RV measurements reveal an orbit that is consistent with the predictions of the microlens light curve analysis, thereby providing the first confirmation of orbital elements inferred from microlensing events.", "date": "2016-04-20", "date_type": "published", "publication": "Astrophysical Journal", "volume": "821", "number": "2", "publisher": "American Astronomical Society", "pagerange": "Art. No. 121", "id_number": "CaltechAUTHORS:20160623-154107002", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20160623-154107002", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA Sagan Fellowship" }, { "agency": "NSF", "grant_number": "AST 1103471" }, { "agency": "NASA", "grant_number": "NNX12AB99G" }, { "agency": "NSF Graduate Research Fellowship", "grant_number": "DGE-1144469" }, { "agency": "NSF Graduate Research Fellowship", "grant_number": "DGE 1144152" }, { "agency": "W. M. Keck Foundation" } ] }, "doi": "10.3847/0004-637X/821/2/121", "primary_object": { "basename": "1506.01441v1.pdf", "url": "https://authors.library.caltech.edu/records/6aqq9-gck80/files/1506.01441v1.pdf" }, "related_objects": [ { "basename": "apj_821_2_121.pdf", "url": "https://authors.library.caltech.edu/records/6aqq9-gck80/files/apj_821_2_121.pdf" } ], "resource_type": "article", "pub_year": "2016", "author_list": "Yee, Jennifer C.; Johnson, John Asher; et el." }, { "id": "https://authors.library.caltech.edu/records/37b89-ns609", "eprint_id": 78394, "eprint_status": "archive", "datestamp": "2023-08-22 16:58:41", "lastmod": "2023-10-26 00:03:57", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Hartman-J-D", "name": { "family": "Hartman", "given": "J. D." }, "orcid": "0000-0001-8732-6166" }, { "id": "Bakos-G-\u00c1", "name": { "family": "Bakos", "given": "G. \u00c1." }, "orcid": "0000-0001-7204-6727" }, { "id": "Buchhave-L-A", "name": { "family": "Buchhave", "given": "L. A." }, "orcid": "0000-0003-1605-5666" }, { "id": "Torres-G", "name": { "family": "Torres", "given": "G." }, "orcid": "0000-0002-5286-0251" }, { "id": "Latham-D-W", "name": { "family": "Latham", "given": "D. W." }, "orcid": "0000-0001-9911-7388" }, { "id": "Kov\u00e1cs-G", "name": { "family": "Kov\u00e1cs", "given": "G." } }, { "id": "Bhatti-W", "name": { "family": "Bhatti", "given": "W." }, "orcid": "0000-0002-0628-0088" }, { "id": "Csubry-Z", "name": { "family": "Csubry", "given": "Z." } }, { "id": "de-Val-Borro-M", "name": { "family": "de Val-Borro", "given": "M." } }, { "id": "Penev-K", "name": { "family": "Penev", "given": "K." }, "orcid": "0000-0003-4464-1371" }, { "id": "Huang-Chelsea-X", "name": { "family": "Huang", "given": "C. X." }, "orcid": "0000-0003-0918-7484" }, { "id": "B\u00e9ky-B", "name": { "family": "B\u00e9ky", "given": "B." } }, { "id": "Bieryla-A", "name": { "family": "Bieryla", "given": "A." }, "orcid": "0000-0001-6637-5401" }, { "id": "Quinn-S-N", "name": { "family": "Quinn", "given": "S. N." }, "orcid": "0000-0002-8964-8377" }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "A. W." }, "orcid": "0000-0001-8638-0320" }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "G. W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "J. A." } }, { "id": "Isaacson-H-T", "name": { "family": "Isaacson", "given": "H." }, "orcid": "0000-0002-0531-1073" }, { "id": "Fischer-D-A", "name": { "family": "Fischer", "given": "D. A." }, "orcid": "0000-0003-2221-0861" }, { "id": "Noyes-R-W", "name": { "family": "Noyes", "given": "R. W." } }, { "id": "Falco-E-E", "name": { "family": "Falco", "given": "E." } }, { "id": "Esquerdo-G-A", "name": { "family": "Esquerdo", "given": "G. A." }, "orcid": "0000-0002-9789-5474" }, { "id": "Knox-R-P", "name": { "family": "Knox", "given": "R. P." } }, { "id": "Hinz-P-M", "name": { "family": "Hinz", "given": "P." }, "orcid": "0000-0002-1954-4564" }, { "id": "L\u00e1z\u00e1r-J", "name": { "family": "L\u00e1z\u00e1r", "given": "J." } }, { "id": "Papp-I", "name": { "family": "Papp", "given": "I." } }, { "id": "S\u00e1ri-P", "name": { "family": "S\u00e1ri", "given": "P." } } ] }, "title": "HAT-P-57b: A Short-Period Giant Planet Transiting A Bright Rapidly Rotating A8V Star Confirmed via Doppler Tomography", "ispublished": "pub", "full_text_status": "public", "keywords": "Planetary systems; Stars: individual (HAT-P-57); Techniques: photometric; Techniques: spectroscopic", "note": "\u00a9 2015 The American Astronomical Society. \n\nReceived 2015 September 16; accepted 2015 October 29; published 2015 December 11. \n\nWe are grateful to the anonymous referee for their careful review of this paper, including several important comments. HATNet operations have been funded by NASA grants NNG04GN74G and NNX13AJ15G. Follow-up of HATNet targets has been partially supported through NSF grant AST-1108686. G. \u00c1. B., Z. C. and K. P. acknowledge partial support from NASA grant NNX09AB29G. J. H. acknowledges support from NASA grant NNX14AE87G. K.P. acknowledges support from NASA grant NNX13AQ62G. We acknowledge partial support also from the Kepler Mission under NASA Cooperative Agreement NCC2-1390 (D. W. L., PI). We would also like to thank J. Pepper for informing us about the KELT observations of this system. Data presented in this paper are based on observations obtained at the HAT station at the Submillimeter Array of SAO, and the HAT station at the Fred Lawrence Whipple Observatory of SAO. The authors wish to recognize and acknowledge the very significant cultural role and reverence that the summit of Mauna Kea has always had within the indigenous Hawaiian community. We are most fortunate to have the opportunity to conduct observations from this mountain. This paper presents observations made with the Nordic Optical Telescope, operated on the island of La Palma jointly by Denmark, Finland, Iceland, Norway, and Sweden, in the Spanish Observatorio del Roque de los Muchachos of the Instituto de Astrof\u00edsica de Canarias.\n\nPublished - Hartman_2015_AJ_150_197.pdf
Submitted - 1510.08839.pdf
", "abstract": "We present the discovery of HAT-P-57b, a P = 2.4653 day transiting planet around a V = 10.465 \u00b1 0.029 mag, T_eff = 7500 \u00b1 250 K main sequence A8V star with a projected rotation velocity of v sin i = 102.1 \u00b1 1.3 km s^-1. We measure the radius of the planet to be R = 1.413 \u00b1 0.054 R_J and, based on RV observations, place a 95% confidence upper limit on its mass of M < 1.85 M_J. Based on theoretical stellar evolution models, the host star has a mass and radius of 1.47 \u00b1 0.12 M_\u2299 and 1.500 \u00b1 0.050 R_\u2299, respectively. Spectroscopic observations made with Keck-I/HIRES during a partial transit event show the Doppler shadow of HAT-P-57b moving across the average spectral line profile of HAT-P-57, confirming the object as a planetary system. We use these observations, together with analytic formulae that we derive for the line profile distortions, to determine the projected angle between the spin axis of HAT-P-57 and the orbital axis of HAT-P-57b. The data permit two possible solutions, with -16\u00b0.7 < \u03bb < 3\u00b0.3 or 27\u00b0.6 < \u03bb < 57\u00b0.4 at 95% confidence, and with relative probabilities for the two modes of 26% and 74%, respectively. Adaptive optics imaging with MMT/Clio2 reveals an object located 2\".7 from HAT-P-57 consisting of two point sources separated in turn from each other by 0\".22. The H- and L'-band magnitudes of the companion stars are consistent with their being physically associated with HAT-P-57, in which case they are stars of mass 0.61 \u00b1 0.10 M_\u2299 and 0.53 \u00b1 0.08 M_\u2299. HAT-P-57 is the most rapidly rotating star, and only the fourth main sequence A star, known to host a transiting planet.", "date": "2015-12", "date_type": "published", "publication": "Astronomical Journal", "volume": "150", "number": "6", "publisher": "American Astronomical Society", "pagerange": "Art. No. 197", "id_number": "CaltechAUTHORS:20170620-170041246", "issn": "1538-3881", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20170620-170041246", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNG04GN74G" }, { "agency": "NASA", "grant_number": "NNX13AJ15G" }, { "agency": "NSF", "grant_number": "AST-1108686" }, { "agency": "NASA", "grant_number": "NNX09AB29G" }, { "agency": "NASA", "grant_number": "NNX14AE87G" }, { "agency": "NASA", "grant_number": "NNX13AQ62G" }, { "agency": "NASA", "grant_number": "NCC2-1390" } ] }, "doi": "10.1088/0004-6256/150/6/197", "primary_object": { "basename": "1510.08839.pdf", "url": "https://authors.library.caltech.edu/records/37b89-ns609/files/1510.08839.pdf" }, "related_objects": [ { "basename": "Hartman_2015_AJ_150_197.pdf", "url": "https://authors.library.caltech.edu/records/37b89-ns609/files/Hartman_2015_AJ_150_197.pdf" } ], "resource_type": "article", "pub_year": "2015", "author_list": "Hartman, J. D.; Bakos, G. \u00c1.; et el." }, { "id": "https://authors.library.caltech.edu/records/cqx9v-32p10", "eprint_id": 65110, "eprint_status": "archive", "datestamp": "2023-08-20 08:56:44", "lastmod": "2023-10-17 23:12:06", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Jensen-Clem-R-M", "name": { "family": "Jensen-Clem", "given": "Rebecca" }, "orcid": "0000-0003-0054-2953" }, { "id": "Muirhead-P-S", "name": { "family": "Muirhead", "given": "Philip S." }, "orcid": "0000-0002-0638-8822" }, { "id": "Bottom-M", "name": { "family": "Bottom", "given": "Michael" }, "orcid": "0000-0003-1341-5531" }, { "id": "Wallace-J-K", "name": { "family": "Wallace", "given": "J. Kent" } }, { "id": "Vasisht-G", "name": { "family": "Vasisht", "given": "Gautam" }, "orcid": "0000-0002-1871-6264" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" } ] }, "title": "Attaining Doppler Precision of 10 cm s^(-1) with a Lock-in Amplified Spectrometer", "ispublished": "pub", "full_text_status": "public", "note": "\u00a9 2015 The Astronomical Society of the Pacific. \n\nReceived 2014 February 11; accepted 2015 August 21; published 2015 October 21. \n\nThis material is based upon work supported by the National Science Foundation Graduate Research Fellowship under Grant No. DGE-1144469. P. S. M. acknowledges support for his work from the Hubble Fellowship Program, provided by NASA through Hubble Fellowship grant HST-HF-51326.01-A, awarded by the STScI, which is operated by the AURA, Inc., for NASA, under contract NAS 5-26555. P. S. M, G. V., and J. K. W. were supported by the Directors Research and Development Fund and the California Institute of Technology/Jet Propulsion Laboratory. M. B. is supported by a National Space Technology Research Fellowship. J. A. J. is supported by generous grants from the David and Lucile Packard Foundation and the Alfred P. Sloan Foundation. We would like to thank Lynne Hillenbrand for useful discussions. J. K. W. and G. V. are supported by the Caltech-JPL President and Director's fund.\n\nSubmitted - 1510.05602.pdf
", "abstract": "We explore the radial velocity performance benefits of coupling starlight to a fast-scanning interferometer and a fast-readout spectrometer with zero readout noise. By rapidly scanning an interferometer, we can decouple wavelength calibration errors from precise radial velocity measurements, exploiting the advantages of lock-in amplification. In a Bayesian framework, we investigate the correlation between wavelength calibration errors and resulting radial velocity errors. We construct an end-to-end simulation of this approach to address the feasibility of achieving 10 cm s^(-1) radial velocity precision on a typical Sun-like star using existing, 5 m-class telescopes. We find that such a precision can be reached in a single night, opening up possibilities for ground-based detections of Earth-Sun analog systems.", "date": "2015-11", "date_type": "published", "publication": "Publications of the Astronomical Society of the Pacific", "volume": "127", "number": "957", "publisher": "Astronomical Society of the Pacific", "pagerange": "1105-1112", "id_number": "CaltechAUTHORS:20160307-103106574", "issn": "0004-6280", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20160307-103106574", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NSF Graduate Research Fellowship", "grant_number": "DGE-1144469" }, { "agency": "NASA Hubble Fellowship", "grant_number": "HST-HF-51326.01-A" }, { "agency": "NASA", "grant_number": "NAS 5-26555" }, { "agency": "JPL Director's Research and Development Fund" }, { "agency": "NASA Space Technology Research Fellowship" }, { "agency": "David and Lucile Packard Foundation" }, { "agency": "Alfred P. Sloan Foundation" }, { "agency": "JPL/Caltech" }, { "agency": "Caltech President's Fund" } ] }, "doi": "10.1086/683796", "primary_object": { "basename": "1510.05602.pdf", "url": "https://authors.library.caltech.edu/records/cqx9v-32p10/files/1510.05602.pdf" }, "resource_type": "article", "pub_year": "2015", "author_list": "Jensen-Clem, Rebecca; Muirhead, Philip S.; et el." }, { "id": "https://authors.library.caltech.edu/records/pckw0-8mn41", "eprint_id": 61552, "eprint_status": "archive", "datestamp": "2023-08-20 08:44:39", "lastmod": "2023-10-23 15:12:56", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Vanderburg-A", "name": { "family": "Vanderburg", "given": "Andrew" }, "orcid": "0000-0001-7246-5438" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" }, { "id": "Rappaport-S", "name": { "family": "Rappaport", "given": "Saul" }, "orcid": "0000-0003-3182-5569" }, { "id": "Bieryla-A", "name": { "family": "Bieryla", "given": "Allyson" }, "orcid": "0000-0001-6637-5401" }, { "id": "Irwin-J-M", "name": { "family": "Irwin", "given": "Jonathan" } }, { "id": "Lewis-J-A", "name": { "family": "Lewis", "given": "John Arban" } }, { "id": "Kipping-D", "name": { "family": "Kipping", "given": "David" } }, { "id": "Brown-W-R", "name": { "family": "Brown", "given": "Warren R." } }, { "id": "Dufour-P", "name": { "family": "Dufour", "given": "Patrick" } }, { "id": "Ciardi-D-R", "name": { "family": "Ciardi", "given": "David R." }, "orcid": "0000-0002-5741-3047" }, { "id": "Angus-R", "name": { "family": "Angus", "given": "Ruth" } }, { "id": "Schaefer-L", "name": { "family": "Schaefer", "given": "Laura" } }, { "id": "Latham-D-W", "name": { "family": "Latham", "given": "David W." }, "orcid": "0000-0001-9911-7388" }, { "id": "Charbonneau-D", "name": { "family": "Charbonneau", "given": "David" }, "orcid": "0000-0002-9003-484X" }, { "id": "Beichman-C-A", "name": { "family": "Beichman", "given": "Charles" }, "orcid": "0000-0002-5627-5471" }, { "id": "Eastman-J-D", "name": { "family": "Eastman", "given": "Jason" }, "orcid": "0000-0003-3773-5142" }, { "id": "McCrady-N", "name": { "family": "McCrady", "given": "Nate" } }, { "id": "Wittenmyer-R-A", "name": { "family": "Wittenmyer", "given": "Robert A." }, "orcid": "0000-0001-9957-9304" }, { "id": "Wright-J-T", "name": { "family": "Wright", "given": "Jason T." }, "orcid": "0000-0001-6160-5888" } ] }, "title": "A disintegrating minor planet transiting a white dwarf", "ispublished": "pub", "full_text_status": "public", "note": "\u00a9 2015 Macmillan Publishers Limited. \n\nReceived 11 June 2015. Accepted 26 August 2015. Published online 21 October 2015. \n\nWe thank B. Croll, D. Veras, M. Holman, R. Loomis, J. Becker, K. Deck, H. Schlichting, H. Lin, A. Loeb, and D. Osip for discussions and assistance. We thank C. Allinson, S. Dillet, D. Frostig, A. Johnson, D. Hellstrom, S. Johnson, B. Peak, and T. Reneau for conducting MINERVA observations. We thank M. Wyatt for suggesting how to present Supplementary Fig. 8. A.V. is supported by a National Science Foundation Graduate Research Fellowship (grant DGE 1144152). J.A.J. is supported by grants from the David and Lucile Packard Foundation and the Alfred P. Sloan Foundation. The Center for Exoplanets and Habitable Worlds is supported by Pennsylvania State University, the Eberly College of Science, and the Pennsylvania Space Grant Consortium. The MEarth Team acknowledges funding from the David and Lucile Packard Fellowship for Science and Engineering (to D.C.), the National Science Foundation under grants AST-0807690, AST-1109468, and AST-1004488 (Alan T. Waterman Award), and a grant from the John Templeton Foundation. The opinions expressed here are those of the authors and do not necessarily reflect the views of the John Templeton Foundation. This research has made use of NASA's Astrophysics Data System, the SIMBAD database and VizieR catalog access tool operated at the Centre de Donn\u00e9es astronomiques de Strasbourg, France. Some of the data presented here were obtained from the Mikulski Archive for Space Telescopes (MAST). This paper includes data from the Kepler/K2 mission, the Wide-field Infrared Survey Explorer, the MMT Observatory, the Sloan Digital Sky Survey (SDSS-III), the National Geographic Society\u2014Palomar Observatory Sky Atlas (POSS-I) and the W.M. Keck Observatory. MINERVA is made possible by contributions from its collaborating institutions and Mt Cuba Astronomical Foundation, the David and Lucile Packard Foundation, the National Aeronautics and Space Administration, and the Australian Research Council. We acknowledge the cultural significance of the summit of Maunakea within the indigenous Hawai'ian community. We are grateful for the opportunity to conduct observations from this mountain. \n\nContributions: A.V. processed and searched the K2 data, identified this system, analysed the K2 data for WD 1145+017 (with help from S.R., D.K., and J.T.W.), processed the MINERVA data, measured radial velocities (with help from W.R.B. and D.W.L.), and was the primary author of the manuscript. S.R. performed the dynamical calculations and dust simulations. W.R.B. obtained and reduced the MMT spectra. P.D. analysed the MMT spectra and SDSS photometry to measure spectroscopic properties. J.A.L. analysed archival photometric measurements and modelled the excess infrared emission. A.B. and D.W.L. obtained and processed the FLWO data. J.I. and D.C. obtained and processed the MEarth data. D.R.C. and C.B. obtained and processed the Keck data. R.A. calculated the systematics insensitive periodogram. L.S. calculated vapour pressures for some minerals with MAGMA. J.A.J., J.E., N.M., R.A.W., and J.T.W. made it possible to use MINERVA. J.A.J. provided scientific leadership. \n\nThe authors declare no competing financial interests. \n\nThe raw K2 data are available at http://archive.stsci.edu/k2/data_search/search.php under the identification number 201563164. The processed K2 data are available at https://archive.stsci.edu/missions/hlsp/k2sff/html/c01/ep201563164.html. We have opted not to make the code used in this work available.\n\nSubmitted - 1510.06387.pdf
Supplemental Material - nature15527-s1.pdf
Supplemental Material - nature15527-s2.txt
Supplemental Material - nature15527-s3.txt
Supplemental Material - nature15527-s4.txt
", "abstract": "Most stars become white dwarfs after they have exhausted their nuclear fuel (the Sun will be one such). Between one-quarter and one-half of white dwarfs have elements heavier than helium in their atmospheres, even though these elements ought to sink rapidly into the stellar interiors (unless they are occasionally replenished). The abundance ratios of heavy elements in the atmospheres of white dwarfs are similar to the ratios in rocky bodies in the Solar System. This fact, together with the existence of warm, dusty debris disks surrounding about four per cent of white dwarfs, suggests that rocky debris from the planetary systems of white-dwarf progenitors occasionally pollutes the atmospheres of the stars. The total accreted mass of this debris is sometimes comparable to the mass of large asteroids in the Solar System. However, rocky, disintegrating bodies around a white dwarf have not yet been observed. Here we report observations of a white dwarf\u2014WD 1145+017\u2014being transited by at least one, and probably several, disintegrating planetesimals, with periods ranging from 4.5 hours to 4.9 hours. The strongest transit signals occur every 4.5 hours and exhibit varying depths (blocking up to 40 per cent of the star's brightness) and asymmetric profiles, indicative of a small object with a cometary tail of dusty effluent material. The star has a dusty debris disk, and the star's spectrum shows prominent lines from heavy elements such as magnesium, aluminium, silicon, calcium, iron, and nickel. This system provides further evidence that the pollution of white dwarfs by heavy elements might originate from disrupted rocky bodies such as asteroids and minor planets.", "date": "2015-10-22", "date_type": "published", "publication": "Nature", "volume": "526", "number": "7574", "publisher": "Nature Publishing Group", "pagerange": "546-549", "id_number": "CaltechAUTHORS:20151027-101452236", "issn": "0028-0836", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20151027-101452236", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NSF Graduate Research Fellowship", "grant_number": "DGE 1144152" }, { "agency": "David and Lucile Packard Foundation" }, { "agency": "Alfred P. Sloan Foundation" }, { "agency": "Pennsylvania State University" }, { "agency": "Pennsylvania Space Grant Consortium" }, { "agency": "NSF", "grant_number": "AST-0807690" }, { "agency": "NSF", "grant_number": "AST-1109468" }, { "agency": "NSF", "grant_number": "AST-1004488" }, { "agency": "John Templeton Foundation" }, { "agency": "Mt. Cuba Astronomical Foundation" }, { "agency": "NASA" }, { "agency": "Australian Research Council" } ] }, "local_group": { "items": [ { "id": "Infrared-Processing-and-Analysis-Center-(IPAC)" } ] }, "doi": "10.1038/nature15527", "primary_object": { "basename": "1510.06387.pdf", "url": "https://authors.library.caltech.edu/records/pckw0-8mn41/files/1510.06387.pdf" }, "related_objects": [ { "basename": "nature15527-s1.pdf", "url": "https://authors.library.caltech.edu/records/pckw0-8mn41/files/nature15527-s1.pdf" }, { "basename": "nature15527-s2.txt", "url": "https://authors.library.caltech.edu/records/pckw0-8mn41/files/nature15527-s2.txt" }, { "basename": "nature15527-s3.txt", "url": "https://authors.library.caltech.edu/records/pckw0-8mn41/files/nature15527-s3.txt" }, { "basename": "nature15527-s4.txt", "url": "https://authors.library.caltech.edu/records/pckw0-8mn41/files/nature15527-s4.txt" } ], "resource_type": "article", "pub_year": "2015", "author_list": "Vanderburg, Andrew; Johnson, John Asher; et el." }, { "id": "https://authors.library.caltech.edu/records/s1jze-c9j14", "eprint_id": 61311, "eprint_status": "archive", "datestamp": "2023-08-20 07:44:00", "lastmod": "2023-10-25 14:44:15", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Montet-B-T", "name": { "family": "Montet", "given": "Benjamin T." }, "orcid": "0000-0001-7516-8308" }, { "id": "Morton-T-D", "name": { "family": "Morton", "given": "Timothy D." }, "orcid": "0000-0002-8537-5711" }, { "id": "Foreman-Mackey-D", "name": { "family": "Foreman-Mackey", "given": "Daniel" }, "orcid": "0000-0002-9328-5652" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" }, { "id": "Hogg-D-W", "name": { "family": "Hogg", "given": "David W." }, "orcid": "0000-0003-2866-9403" }, { "id": "Bowler-B-P", "name": { "family": "Bowler", "given": "Brendan P." }, "orcid": "0000-0003-2649-2288" }, { "id": "Latham-D-W", "name": { "family": "Latham", "given": "David W." }, "orcid": "0000-0001-9911-7388" }, { "id": "Bieryla-A", "name": { "family": "Bieryla", "given": "Allyson" }, "orcid": "0000-0001-6637-5401" }, { "id": "Mann-A-W", "name": { "family": "Mann", "given": "Andrew W." }, "orcid": "0000-0003-3654-1602" } ] }, "title": "Stellar and Planetary Properties of K2 Campaign 1 Candidates and Validation of 17 Planets, Including a Planet Receiving Earth-like Insolation", "ispublished": "pub", "full_text_status": "public", "keywords": "catalogs \u2013 planetary systems \u2013 planets and satellites: detection \u2013 stars: fundamental parameters", "note": "\u00a9 2015 The American Astronomical Society.\n\nReceived 2015 March 27; accepted 2015 July 2; published 2015 August 5.\n\nWe thank Roberto Sanchis-Ojeda (Berkeley), Dan Huber (Sydney) and Jeff Coughlin (SETI) for conversations and suggestions which improved the quality of this manuscript. We also thank Keivan Stassun (Vanderbilt) for his insights into stellar parameters and the rate of subgiant contamination for both Kepler and K2, which significantly improved this work. We thank the anonymous referee for their comments and suggestions. We are grateful to the entire Kepler team, past and present. Their tireless efforts were all essential to the tremendous success of the mission and the successes of K2 present and future. Some of the data presented in this paper were obtained from the Mikulski Archive for Space Telescopes (MAST). STScI is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS5-26555. for MAST for non-HST data is provided by the NASA Office of Space Science via grant NNX13AC07G and by other grants and contracts. This paper includes data collected by the Kepler mission. Funding for the Kepler mission is provided by the NASA Science Mission directorate. This paper includes data collected by the Sloan Digital Sky Survey. Funding for SDSS-III has been provided by the Alfred P. Sloan Foundation, the Participating Institutions, the National Science Foundation, and the U.S. Department of Energy Office of Science. The SDSS-III web site is http://www.sdss3.org/. SDSS-III is managed by the Astrophysical Research Consortium for the Participating Institutions of the SDSS-III Collaboration including the University of Arizona, the Brazilian Participation Group, Brookhaven National Laboratory, Carnegie Mellon University, University of Florida, the French Participation Group, the German Participation Group, Harvard University, the Instituto de Astrofisica de Canarias, the Michigan State/Notre Dame/JINA Participation Group, Johns Hopkins University, Lawrence Berkeley National Laboratory, Max Planck Institute for Astrophysics, Max Planck Institute for Extraterrestrial Physics, New Mexico State University, New York University, Ohio State University, Pennsylvania State University, University of Portsmouth, Princeton University, the Spanish Participation Group, University of Tokyo, University of Utah, Vanderbilt University, University of Virginia, University of Washington, and Yale University. B.T.M. is supported by the National Science Foundation Graduate Research Fellowship under Grant No. DGE-1144469. J.A.J. is supported by generous grants from the David and Lucile Packard Foundation and the Alfred P. Sloan Foundation. D.F.M. and D.W.H. were partially supported by the National Science Foundation (grant IIS-1124794), the National Aeronautics and Space Administration (grant NNX12AI50G), and the Moore-Sloan Data Science Environment at NYU. T.D.M. is supported by the National Aeronautics and Space Administration (grant NNX14AE11G). \n\nFacilities: Kepler - The Kepler Mission, Hale(PHARO) -, FLWO:1.5 m -, IRTF(SpeX) - Infrared Telescope Facility\n\nPublished - Montet_2015.pdf
Submitted - 1503.07866v3.pdf
", "abstract": "The extended Kepler mission, K2, is now providing photometry of new fields every three months in a search for transiting planets. In a recent study, Foreman-Mackey and collaborators presented a list of 36 planet candidates orbiting 31 stars in K2 Campaign 1. In this contribution, we present stellar and planetary properties for all systems. We combine ground-based seeing-limited survey data and adaptive optics imaging with an automated transit analysis scheme to validate 21 candidates as planets, 17 for the first time, and identify 6 candidates as likely false positives. Of particular interest is K2-18 (EPIC 201912552), a bright (K = 8.9) M2.8 dwarf hosting a 2.23 \u00b1 0.25 R\u2295 planet with T_(eq) = 272 \u00b1 15 K and an orbital period of 33 days. We also present two new open-source software packages which enable this analysis. The first, isochrones, is a flexible tool for fitting theoretical stellar models to observational data to determine stellar properties using a nested sampling scheme to capture the multimodal nature of the posterior distributions of the physical parameters of stars that may plausibly be evolved. The second is vespa, a new general-purpose procedure to calculate false positive probabilities and statistically validate transiting exoplanets.", "date": "2015-08-10", "date_type": "published", "publication": "Astrophysical Journal", "volume": "809", "number": "1", "publisher": "American Astronomical Society", "pagerange": "Art. No. 25", "id_number": "CaltechAUTHORS:20151020-091403673", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20151020-091403673", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS5-26555" }, { "agency": "NASA", "grant_number": "NNX13AC07G" }, { "agency": "Alfred P. Sloan Foundation" }, { "agency": "Participating Institutions" }, { "agency": "Department of Energy (DOE)" }, { "agency": "NSF Graduate Research Fellowship", "grant_number": "DGE-1144469" }, { "agency": "David and Lucile Packard Foundation" }, { "agency": "NSF", "grant_number": "IIS-1124794" }, { "agency": "NASA", "grant_number": "NNX12AI50G" }, { "agency": "New York University (NYU)" }, { "agency": "NASA", "grant_number": "NNX14AE11G" } ] }, "doi": "10.1088/0004-637X/809/1/25", "primary_object": { "basename": "1503.07866v3.pdf", "url": "https://authors.library.caltech.edu/records/s1jze-c9j14/files/1503.07866v3.pdf" }, "related_objects": [ { "basename": "Montet_2015.pdf", "url": "https://authors.library.caltech.edu/records/s1jze-c9j14/files/Montet_2015.pdf" } ], "resource_type": "article", "pub_year": "2015", "author_list": "Montet, Benjamin T.; Morton, Timothy D.; et el." }, { "id": "https://authors.library.caltech.edu/records/475qf-0be29", "eprint_id": 59010, "eprint_status": "archive", "datestamp": "2023-08-20 06:29:42", "lastmod": "2023-10-23 19:58:10", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Swift-J-J", "name": { "family": "Swift", "given": "Jonathan J." }, "orcid": "0000-0002-9486-818X" }, { "id": "Montet-B-T", "name": { "family": "Montet", "given": "Benjamin T." }, "orcid": "0000-0001-7516-8308" }, { "id": "Vanderburg-A", "name": { "family": "Vanderburg", "given": "Andrew" }, "orcid": "0000-0001-7246-5438" }, { "id": "Morton-T-D", "name": { "family": "Morton", "given": "Timothy" }, "orcid": "0000-0002-8537-5711" }, { "id": "Muirhead-P-S", "name": { "family": "Muirhead", "given": "Philip S." }, "orcid": "0000-0002-0638-8822" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" } ] }, "title": "Characterizing the Cool KOIs. VIII. Parameters of the Planets Orbiting Kepler's Coolest Dwarfs", "ispublished": "pub", "full_text_status": "public", "keywords": "methods: statistical \u2013 planets and satellites: general \u2013 stars: late-type \u2013 stars: low-mass", "note": "\u00a9 2015 The American Astronomical Society.\n\nReceived 2014 December 26; accepted 2015 February 26; published 2015 June 22.\n\nJ.J.S. would like to thank Jason Eastman, David Kipping, Ellen Price, and Natalie Batalha for their helpful input regarding various aspects of this work. All of the data presented in this paper were obtained from the MAST. STScI is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS5-26555. Support for MAST for non-Hubble Space Telescope data is provided by the NASA Office of Space Science via grant NNX13AC07G and by other grants and contracts. This paper includes data collected by the Kepler mission. Funding for the Kepler mission is provided by the NASA Science Mission directorate. A.V. and B.T.M. are supported by the National Science Foundation Graduate Research Fellowship, grant No. DGE 1144152 and DGE 1144469, respectively.\n\nPublished - 0067-0049_218_2_26.pdf
Submitted - 1503.01115v1.pdf
", "abstract": "The coolest dwarf stars targeted by the Kepler Mission constitute a relatively small but scientifically valuable subset of the Kepler target stars, and provide a high-fidelity, nearby sample of transiting planetary systems. Using archival Kepler data spanning the entire primary mission, we perform a uniform analysis to extract, confirm, and characterize the transit signals discovered by the Kepler pipeline toward M-type dwarf stars. We recover all but two of the signals reported in a recent listing from the Exoplanet Archive resulting in 163 planet candidates associated with a sample of 104 low-mass stars. We fitted the observed light curves to transit models using a Markov Chain Monte Carlo method and we have made the posterior samples publicly available to facilitate further studies. We fitted empirical transit times to individual transit signals with significantly non-linear ephemerides for accurate recovery of transit parameters and precise measuring of transit timing variations. We also provide the physical parameters for the stellar sample, including new measurements of stellar rotation, allowing the conversion of transit parameters into planet radii and orbital parameters.", "date": "2015-06", "date_type": "published", "publication": "Astrophysical Journal Supplement Series", "volume": "218", "number": "2", "publisher": "American Astronomical Society", "pagerange": "Art. No. 26", "id_number": "CaltechAUTHORS:20150724-133502599", "issn": "0067-0049", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150724-133502599", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS5-26555" }, { "agency": "NASA", "grant_number": "NNX13AC07G" }, { "agency": "NSF Graduate Research Fellowship", "grant_number": "DGE-1144152" }, { "agency": "NSF Graduate Research Fellowship", "grant_number": "DGE-1144469" } ] }, "doi": "10.1088/0067-0049/218/2/26", "primary_object": { "basename": "0067-0049_218_2_26.pdf", "url": "https://authors.library.caltech.edu/records/475qf-0be29/files/0067-0049_218_2_26.pdf" }, "related_objects": [ { "basename": "1503.01115v1.pdf", "url": "https://authors.library.caltech.edu/records/475qf-0be29/files/1503.01115v1.pdf" } ], "resource_type": "article", "pub_year": "2015", "author_list": "Swift, Jonathan J.; Montet, Benjamin T.; et el." }, { "id": "https://authors.library.caltech.edu/records/27595-te164", "eprint_id": 57584, "eprint_status": "archive", "datestamp": "2023-08-22 15:17:01", "lastmod": "2023-10-23 17:33:03", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Becker-J-C", "name": { "family": "Becker", "given": "Juliette C." }, "orcid": "0000-0002-7733-4522" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" }, { "id": "Vanderburg-A", "name": { "family": "Vanderburg", "given": "Andrew" }, "orcid": "0000-0001-7246-5438" }, { "id": "Morton-T-D", "name": { "family": "Morton", "given": "Timothy D." }, "orcid": "0000-0002-8537-5711" } ] }, "title": "Extracting Radial Velocities of A- and B-type Stars from Echelle Spectrograph Calibration Spectra", "ispublished": "pub", "full_text_status": "public", "keywords": "binaries: general; methods: data analysis; techniques: radial velocities", "note": "\u00a9 2015 American Astronomical Society. Received 2014 November 3; accepted 2015 March 12; published 2015 April 15. \n\nWe thank Emily Rauscher for her careful review of the manuscript and helpful suggestions. J.B. thanks Philip Muirhead for useful conversations and Iryna Butsky for useful comments on the manuscript. We thank the referee, Davide Gandolfi, for his extremely helpful suggestions that led to a vastly improved paper, as well as his suggestions for future directions to take this work. J.B. and A.V. are supported by the National Science Foundation Graduate Research Fellowship, Grants No. DGE 1256260 and DGE 1144152, respectively. J.B. would like to thank Mr. and Mrs. Kenneth Adelman for providing funding for her 2012 Alain Porter Memorial SURF Fellowship, during which this research was begun. J.A.J. is supported by generous grants from the David and Lucile Packard and Alfred P. Sloan Foundations. This research has made use of NASA's Astrophysics Data System, the SIMBAD database and VizieR catalog access tool, operated at CDS, Strasbourg, France. The data presented herein were obtained at the W.M. Keck Observatory, which is operated as a scientific partnership among the California Institute of Technology, the University of California and the National Aeronautics and Space Administration. The Observatory was made possible by the generous financial support of the W.M. Keck Foundation. The authors wish to recognize and acknowledge the very significant cultural role and reverence that the summit of Mauna Kea has always had within the indigenous Hawaiian community. We are most fortunate to have the opportunity to conduct observations from this mountain.\n\nPublished - 0067-0049_217_2_29.pdf
Submitted - 1503.03874v1.pdf
", "abstract": "We present a technique to extract radial velocity (RV) measurements from echelle spectrograph observations of rapidly rotating stars (V sin i \u2273 50 kms^(\u22121)). This type of measurement is difficult because the line widths of such stars are often comparable to the width of a single echelle order. To compensate for the scarcity of lines and Doppler information content, we have developed a process that forward-models the observations, fitting the RV shift of the star for all echelle orders simultaneously with the echelle blaze function. We use our technique to extract RV measurements from a sample of rapidly rotating A- and B-type stars used as calibrator stars observed by the California Planet Survey observations. We measure absolute RVs with a precision ranging from 0.5\u20132.0 kms^(\u22121) per epoch for more than 100 A- and B-type stars. In our sample of 10 well-sampled stars with RV scatter in excess of their measurement uncertainties, three of these are single-lined binaries with long observational baselines. From this subsample, we present detections of two previously unknown spectroscopic binaries and one known astrometric system. Our technique will be useful in measuring or placing upper limits on the masses of sub-stellar companions discovered by wide-field transit surveys, and conducting future spectroscopic binarity surveys and Galactic space-motion studies of massive and/or young, rapidly rotating stars.", "date": "2015-04", "date_type": "published", "publication": "Astrophysical Journal Supplement Series", "volume": "217", "number": "2", "publisher": "American Astronomical Society", "pagerange": "Art. No. 29", "id_number": "CaltechAUTHORS:20150518-090602291", "issn": "0067-0049", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150518-090602291", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NSF Graduate Research Fellowship", "grant_number": "DGE-1256260" }, { "agency": "NSF Graduate Research Fellowship", "grant_number": "DGE-1144152" }, { "agency": "2012 Alain Porter Memorial Summer Undergraduate Research Fellowship" }, { "agency": "David and Lucile Packard Foundation" }, { "agency": "Alfred P. Sloan Foundation" }, { "agency": "W. M. Keck Foundation" }, { "agency": "Caltech Summer Undergraduate Research Fellowship (SURF)" } ] }, "doi": "10.1088/0067-0049/217/2/29", "primary_object": { "basename": "0067-0049_217_2_29.pdf", "url": "https://authors.library.caltech.edu/records/27595-te164/files/0067-0049_217_2_29.pdf" }, "related_objects": [ { "basename": "1503.03874v1.pdf", "url": "https://authors.library.caltech.edu/records/27595-te164/files/1503.03874v1.pdf" } ], "resource_type": "article", "pub_year": "2015", "author_list": "Becker, Juliette C.; Johnson, John Asher; et el." }, { "id": "https://authors.library.caltech.edu/records/14ypq-cf384", "eprint_id": 78362, "eprint_status": "archive", "datestamp": "2023-08-22 15:18:01", "lastmod": "2023-10-26 00:02:32", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Bakos-G-\u00c1", "name": { "family": "Bakos", "given": "G. \u00c1." }, "orcid": "0000-0001-7204-6727" }, { "id": "Hartman-J-D", "name": { "family": "Hartman", "given": "J. D." }, "orcid": "0000-0001-8732-6166" }, { "id": "Bhatti-W", "name": { "family": "Bhatti", "given": "W." }, "orcid": "0000-0002-0628-0088" }, { "id": "Bieryla-A", "name": { "family": "Bieryla", "given": "A." }, "orcid": "0000-0001-6637-5401" }, { "id": "de-Val-Borro-M", "name": { "family": "de Val-Borro", "given": "M." } }, { "id": "Latham-D-W", "name": { "family": "Latham", "given": "D. W." }, "orcid": "0000-0001-9911-7388" }, { "id": "Buchhave-L-A", "name": { "family": "Buchhave", "given": "L. A." }, "orcid": "0000-0003-1605-5666" }, { "id": "Csubry-Z", "name": { "family": "Csubry", "given": "Z." } }, { "id": "Penev-K", "name": { "family": "Penev", "given": "K." }, "orcid": "0000-0003-4464-1371" }, { "id": "Kov\u00e1cs-G", "name": { "family": "Kov\u00e1cs", "given": "G." } }, { "id": "B\u00e9ky-B", "name": { "family": "B\u00e9ky", "given": "B." } }, { "id": "Falco-E-E", "name": { "family": "Falco", "given": "E." } }, { "id": "Kov\u00e1cs-T", "name": { "family": "Kov\u00e1cs", "given": "T." } }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "A. W." }, "orcid": "0000-0001-8638-0320" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "J. A." }, "orcid": "0000-0001-9808-7172" }, { "id": "Isaacson-H-T", "name": { "family": "Isaacson", "given": "H." }, "orcid": "0000-0002-0531-1073" }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "G. W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Torres-G", "name": { "family": "Torres", "given": "G." }, "orcid": "0000-0002-5286-0251" }, { "id": "Noyes-R-W", "name": { "family": "Noyes", "given": "R. W." } }, { "id": "Berlind-P", "name": { "family": "Berlind", "given": "P." } }, { "id": "Calkins-M-L", "name": { "family": "Calkins", "given": "M. L." }, "orcid": "0000-0002-2830-5661" }, { "id": "Esquerdo-G-A", "name": { "family": "Esquerdo", "given": "G. A." }, "orcid": "0000-0002-9789-5474" }, { "id": "L\u00e1z\u00e1r-J", "name": { "family": "L\u00e1z\u00e1r", "given": "J." } }, { "id": "Papp-I", "name": { "family": "Papp", "given": "I." } }, { "id": "Sarin-P", "name": { "family": "Sarin", "given": "P." } } ] }, "title": "HAT-P-54b: A Hot Jupiter Transiting a 0.64 M_\u2299 Star in field 0 of the K2 Mission", "ispublished": "pub", "full_text_status": "public", "keywords": "planetary systems; stars: individual (HAT-P-54); techniques: photometric; techniques: spectroscopic", "note": "\u00a9 2015. The American Astronomical Society. \n\nReceived 2014 April 16. Accepted 2014 November 28.\nPublished 2015 April 6. \n\nHATNet operations have been funded by NASA grants NNG04GN74G and NNX13AJ15G. Follow-up of HATNet targets has been partially supported through NSF grant AST-1108686. G.\u00c1.B., Z.C., and K.P. acknowledge partial support from NASA grant NNX09AB29G. K.P. acknowledges support from NASA grant NNX13AQ62G. G.T. acknowledges partial support from NASA grant NNX14AB83G. We acknowledge partial support also from the Kepler Mission under NASA Cooperative Agreement NCC2-1390 (D.W.L., PI). G.K. thanks the Hungarian Scientific Research Foundation (OTKA) for support through grant K-81373. Based in part on observations obtained at the W. M. Keck Observatory, which is operated by the University of California and the California Institute of Technology. Keck time has been granted by NASA (N133Hr). Data presented in this paper are based on observations obtained at the HAT station at the Submillimeter Array of SAO, and the HAT station at the Fred Lawrence Whipple Observatory of SAO. Data are also based on observations with the Fred Lawrence Whipple Observatory 1.5 m and 1.2 m telescopes of SAO. The authors wish to recognize and acknowledge the very significant cultural role and reverence that the summit of Mauna Kea has always had within the indigenous Hawaiian community. We are most fortunate to have the opportunity to conduct observations from this mountain.\n\nPublished - Bakos_2015_AJ_149_149.pdf
", "abstract": "We report the discovery of HAT-P-54b, a planet transiting a late K dwarf star in field 0 of the NASA K2 mission. We combine ground-based photometric light curves with radial velocity measurements to determine the physical parameters of the system. HAT-P-54b has a mass of 0.760 \u00b1 0.032 M_J, a radius of 0.944 \u00b1 0.028 R_J, and an orbital period of 3.7998 days. The star has V=13.505 \u00b1 0.060, a mass of 0.645 \u00b1 0.020 M_\u2299, a radius of 0.617 \u00b1 0.013 R_\u2299, an effective temperature of T_(eff*) = 4390 \u00b1 50, and a subsolar metallicity of [Fe/H] = -0.127 \u00b1 0.080. We also detect a periodic signal with P = 15.6 days and 5.6 mmag amplitude in the light curve, which we interpret as due to the rotation of the star. HAT-P-54b has a radius that is smaller than 92% of the known transiting planets with masses greater than that of Saturn, while HAT-P-54 is one of the lowest-mass stars known to host a hot Jupiter. Follow-up high-precision photometric observations by the K2 mission promise to make this a well-studied planetary system.", "date": "2015-04", "date_type": "published", "publication": "Astronomical Journal", "volume": "149", "number": "4", "publisher": "American Astronomical Society", "pagerange": "Art. No. 149", "id_number": "CaltechAUTHORS:20170620-083824899", "issn": "1538-3881", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20170620-083824899", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNG04GN74G" }, { "agency": "NASA", "grant_number": "NNX13AJ15G" }, { "agency": "NSF", "grant_number": "AST-1108686" }, { "agency": "NASA", "grant_number": "NNX09AB29G" }, { "agency": "NASA", "grant_number": "NNX13AQ62G" }, { "agency": "NASA", "grant_number": "NNX14AB83G" }, { "agency": "NASA", "grant_number": "NCC2-1390" }, { "agency": "Hungarian Scientific Research Fund (OTKA)", "grant_number": "K-81373" }, { "agency": "NASA", "grant_number": "N133Hr" } ] }, "doi": "10.1088/0004-6256/149/4/149", "primary_object": { "basename": "Bakos_2015_AJ_149_149.pdf", "url": "https://authors.library.caltech.edu/records/14ypq-cf384/files/Bakos_2015_AJ_149_149.pdf" }, "resource_type": "article", "pub_year": "2015", "author_list": "Bakos, G. \u00c1.; Hartman, J. D.; et el." }, { "id": "https://authors.library.caltech.edu/records/mhk1t-v5m26", "eprint_id": 56018, "eprint_status": "archive", "datestamp": "2023-08-22 14:59:51", "lastmod": "2023-10-20 23:33:18", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Montet-B-T", "name": { "family": "Montet", "given": "Benjamin T." }, "orcid": "0000-0001-7516-8308" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" }, { "id": "Muirhead-P-S", "name": { "family": "Muirhead", "given": "Philip S." }, "orcid": "0000-0002-0638-8822" }, { "id": "Villar-A", "name": { "family": "Villar", "given": "Ashley" } }, { "id": "Vassallo-C", "name": { "family": "Vassallo", "given": "Corinne" } }, { "id": "Baranec-C", "name": { "family": "Baranec", "given": "Christoph" }, "orcid": "0000-0002-1917-9157" }, { "id": "Law-N-M", "name": { "family": "Law", "given": "Nicholas M." }, "orcid": "0000-0001-9380-6457" }, { "id": "Riddle-R-L", "name": { "family": "Riddle", "given": "Reed" }, "orcid": "0000-0002-0387-370X" }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "Geoffrey W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "Andrew W." }, "orcid": "0000-0001-8638-0320" }, { "id": "Isaacson-H-T", "name": { "family": "Isaacson", "given": "Howard" }, "orcid": "0000-0002-0531-1073" } ] }, "title": "Characterizing the Cool KOIs. VII. Refined Physical Properties of the Transiting Brown Dwarf LHS 6343 C", "ispublished": "pub", "full_text_status": "public", "keywords": "binaries: general; brown dwarfs; stars: fundamental parameters; stars: individual (KIC 10002261); stars: late-type; stars: low-mass", "note": "\u00a9 2015 American Astronomical Society. Received 2014 November 12; accepted 2014 December 28; published 2015 February 20.\n\nWe thank Luan Ghezzi and Jennifer Yee for helpful discussions that improved the quality of this manuscript. The RV data presented herein were obtained at the W. M. Keck Observatory, which is operated as a scientific partnership among the California Institute of Technology, the University of California and the National Aeronautics and Space Administration. The Observatory was made possible by the generous financial support of the W. M. Keck Foundation. We are grateful to the entire Kepler team, past and present. Their tireless efforts were all essential to the tremendous success of the mission and the future successes of K2. Some of the data presented in this paper were obtained from the Mikulski Archive for Space Telescopes (MAST). STScI is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS5\u201326555. Support for MAST for non\u2013HST data is provided by the NASA Office of Space Science via grant NNX13AC07G and by other grants and contracts. This paper includes data collected by the Kepler mission. Funding for the Kepler mission is provided by the NASA Science Mission directorate. B.T.M. is supported by the National Science Foundation Graduate Research Fellowship under grant No. DGE1144469. J.A.J. is supported by generous grants from the David and Lucile Packard Foundation and the Alfred P. Sloan Foundation. C.B. acknowledges support from the Alfred P. Sloan Foundation. The Robo-AO system is supported by collaborating partner institutions, the California Institute of Technology and the Inter-University Centre for Astronomy and Astrophysics, and by the National Science Foundation under grant Nos. AST-0906060, AST-0960343, and AST-1207891, by the Mount Cuba Astronomical Foundation, by a gift from Samuel Oschin. We would like to thank the staff of both Palomar Observatory and the W. M. Keck Observatory for their support during our observing runs. Finally, we wish to acknowledge and recognize the very significant cultural role and reverence that the summit of Mauna Kea has always had within the indigenous Hawaiian community. We are most fortunate to have the ability to conduct observations from this mountain. \nFacilities: Keck:I (HIRES), Kepler, Hale (TripleSpec), PO:1.5m (Robo-AO)\n\nPublished - 0004-637X_800_2_134.pdf
Submitted - 1411.4047v2.pdf
", "abstract": "We present an updated analysis of LHS 6343, a triple system in the Kepler field which consists of a brown dwarf transiting one member of a widely separated M+M binary system. By analyzing the full Kepler data set and 34 Keck/HIgh Resolution Echelle Spectrometer radial velocity observations, we measure both the observed transit depth and Doppler semiamplitude to 0.5% precision. With Robo-AO and Palomar/PHARO adaptive optics imaging as well as TripleSpec spectroscopy, we measure a model-dependent mass for LHS 6343 C of 62.1 \u00b1 1.2 M_(Jup) and a radius of 0.783 \u00b1 0.011 R_(Jup). We detect the secondary eclipse in the Kepler data at 3.5\u03c3, measuring ecos \u03c9 = 0.0228 \u00b1 0.0008. We also derive a method to measure the mass and radius of a star and transiting companion directly, without any direct reliance on stellar models. The mass and radius of both objects depend only on the orbital period, stellar density, reduced semimajor axis, Doppler semiamplitude, eccentricity, and inclination, as well as the knowledge that the primary star falls on the main sequence. With this method, we calculate a mass and radius for LHS 6343 C to a precision of 3% and 2%, respectively.", "date": "2015-02-20", "date_type": "published", "publication": "Astrophysical Journal", "volume": "800", "number": "2", "publisher": "American Astronomical Society", "pagerange": "Art. No. 134", "id_number": "CaltechAUTHORS:20150324-105219760", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150324-105219760", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "W. M. Keck Foundation" }, { "agency": "NASA", "grant_number": "NAS 5\u201326555" }, { "agency": "NASA", "grant_number": "NNX13AC07G" }, { "agency": "NSF Graduate Research Fellowship", "grant_number": "DGE-1144469" }, { "agency": "David and Lucile Packard Foundation" }, { "agency": "Alfred P. Sloan Foundation" }, { "agency": "Caltech" }, { "agency": "Inter-University Centre for Astronomy and Astrophysics" }, { "agency": "NSF", "grant_number": "AST-0906060" }, { "agency": "NSF", "grant_number": "AST-0960343" }, { "agency": "NSF", "grant_number": "AST-1207891" }, { "agency": "Mount Cuba Astronomical Foundation" }, { "agency": "Samuel Oschin" } ] }, "doi": "10.1088/0004-637X/800/2/134", "primary_object": { "basename": "0004-637X_800_2_134.pdf", "url": "https://authors.library.caltech.edu/records/mhk1t-v5m26/files/0004-637X_800_2_134.pdf" }, "related_objects": [ { "basename": "1411.4047v2.pdf", "url": "https://authors.library.caltech.edu/records/mhk1t-v5m26/files/1411.4047v2.pdf" } ], "resource_type": "article", "pub_year": "2015", "author_list": "Montet, Benjamin T.; Johnson, John Asher; et el." }, { "id": "https://authors.library.caltech.edu/records/vkvkg-ark79", "eprint_id": 56022, "eprint_status": "archive", "datestamp": "2023-08-22 14:59:59", "lastmod": "2024-02-02 21:06:05", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Ngo-Henry-Hoang-Khoi-Exoplanets", "name": { "family": "Ngo", "given": "Henry" }, "orcid": "0000-0001-5172-4859" }, { "id": "Knutson-H-A", "name": { "family": "Knutson", "given": "Heather A." }, "orcid": "0000-0002-5375-4725" }, { "id": "Hinkley-S", "name": { "family": "Hinkley", "given": "Sasha" }, "orcid": "0000-0001-8074-2562" }, { "id": "Crepp-J-R", "name": { "family": "Crepp", "given": "Justin R." }, "orcid": "0000-0003-0800-0593" }, { "id": "Bechter-E-B", "name": { "family": "Bechter", "given": "Eric B." } }, { "id": "Batygin-K", "name": { "family": "Batygin", "given": "Konstantin" }, "orcid": "0000-0002-7094-7908" }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "Andrew W." }, "orcid": "0000-0001-8638-0320" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John A." }, "orcid": "0000-0001-9808-7172" }, { "id": "Morton-T-D", "name": { "family": "Morton", "given": "Timothy D." }, "orcid": "0000-0002-8537-5711" }, { "id": "Muirhead-P-S", "name": { "family": "Muirhead", "given": "Philip S." }, "orcid": "0000-0002-0638-8822" } ] }, "title": "Friends of Hot Jupiters. II. No Correspondence between Hot-jupiter Spin-Orbit Misalignment and the Incidence of Directly Imaged Stellar Companions", "ispublished": "pub", "full_text_status": "public", "keywords": "binaries: close; binaries: eclipsing; methods: observational; planetary systems; planets and satellites: dynamical evolution and stability; techniques: high angular resolution", "note": "\u00a9 2015 American Astronomical Society. Received 2014 November 3; accepted 2014 December 22; published 2015 February 20.\n\nThis work was supported by NASA grant NNX14AD24G. H.N. is grateful for funding support from the Natural Sciences and Engineering Research Council of Canada. J.A.J. gratefully acknowledges support from generous fellowships from the David & Lucile Packard and Alfred P. Sloan foundations. We also thank Brendan Bowler for assistance with our common proper motion analysis and Rebekah Dawson and Cristobal Petrovich for helpful discussions. This work was based on observations at the W. M. Keck Observatory granted by the California Institute of Technology. We thank the observers who contributed to the measurements reported here and acknowledge the efforts of the Keck Observatory staff. We extend special thanks to those of Hawaiian ancestry on whose sacred mountain of Mauna Kea we are privileged to be guests.\n\nPublished - 0004-637X_800_2_138.pdf
Submitted - 1501.00013v2.pdf
", "abstract": "Multi-star systems are common, yet little is known about a stellar companion's influence on the formation and evolution of planetary systems. For instance, stellar companions may have facilitated the inward migration of hot Jupiters toward to their present day positions. Many observed short-period gas giant planets also have orbits that are misaligned with respect to their star's spin axis, which has also been attributed to the presence of a massive outer companion on a non-coplanar orbit. We present the results of a multi-band direct imaging survey using Keck NIRC2 to measure the fraction of short-period gas giant planets found in multi-star systems. Over three years, we completed a survey of 50 targets (\"Friends of Hot Jupiters\") with 27 targets showing some signature of multi-body interaction (misaligned or eccentric orbits) and 23 targets in a control sample (well-aligned and circular orbits). We report the masses, projected separations, and confirmed common proper motion for the 19 stellar companions found around 17 stars. Correcting for survey incompleteness, we report companion fractions of 48% \u00b1 9%, 47% \u00b1 12%, and 51% \u00b1 13% in our total, misaligned/eccentric, and control samples, respectively. This total stellar companion fraction is 2.8\u03c3 larger than the fraction of field stars with companions approximately 50-2000 AU. We observe no correlation between misaligned/eccentric hot Jupiter systems and the incidence of stellar companions. Combining this result with our previous radial velocity survey, we determine that 72% \u00b1 16% of hot Jupiters are part of multi-planet and/or multi-star systems.", "date": "2015-02-20", "date_type": "published", "publication": "Astrophysical Journal", "volume": "800", "number": "2", "publisher": "American Astronomical Society", "pagerange": "Art. No. 138", "id_number": "CaltechAUTHORS:20150324-112556645", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150324-112556645", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNX14AD24G" }, { "agency": "Natural Sciences and Engineering Research Council of Canada (NSERC)" }, { "agency": "David and Lucile Packard Foundation" }, { "agency": "Alfred P. Sloan Foundation" } ] }, "local_group": { "items": [ { "id": "Division-of-Geological-and-Planetary-Sciences" } ] }, "doi": "10.1088/0004-637X/800/2/138", "primary_object": { "basename": "0004-637X_800_2_138.pdf", "url": "https://authors.library.caltech.edu/records/vkvkg-ark79/files/0004-637X_800_2_138.pdf" }, "related_objects": [ { "basename": "1501.00013v2.pdf", "url": "https://authors.library.caltech.edu/records/vkvkg-ark79/files/1501.00013v2.pdf" } ], "resource_type": "article", "pub_year": "2015", "author_list": "Ngo, Henry; Knutson, Heather A.; et el." }, { "id": "https://authors.library.caltech.edu/records/vsnjf-4km86", "eprint_id": 55341, "eprint_status": "archive", "datestamp": "2023-08-22 14:46:12", "lastmod": "2023-10-20 22:09:01", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Price-E-M", "name": { "family": "Price", "given": "Ellen M." } }, { "id": "Rogers-L-A", "name": { "family": "Rogers", "given": "Leslie A." }, "orcid": "0000-0003-0638-3455" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" }, { "id": "Dawson-R-I", "name": { "family": "Dawson", "given": "Rebekah I." }, "orcid": "0000-0001-9677-1296" } ] }, "title": "How Low can You go? The Photoeccentric Effect for Planets of Various Sizes", "ispublished": "pub", "full_text_status": "public", "keywords": "planetary systems; techniques: photometric", "note": "\u00a9 2015 American Astronomical Society. Received 2014 July 10; accepted 2014 December 1; published 2015 January 12.\n\nWe thank A. P\u00e1l and H. Knutson for use of their photometry\ndata. E.M.P. acknowledges funding provided by Shirley and Carl Larson for her 2013 Carolyn Ash SURF Fellowship. L.A.R.\nacknowledges support provided by NASA through Hubble\nFellowship grant HF-51313.01 awarded by the Space Telescope\nScience Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., for NASA, under contract NAS 5-26555. J.A.J. is grateful for the generous grant support provided by the Alfred P. Sloan and David & Lucile Packard foundations. R.I.D. gratefully acknowledges support by the Miller Institute for Basic Research in Science at University of California, Berkeley.\n\nPublished - 0004-637X_799_1_17.pdf
Submitted - 1412.0014v1.pdf
", "abstract": "It is well-known that the light curve of a transiting planet contains information about the planet's orbital period and size relative to the host star. More recently, it has been demonstrated that a tight constraint on an individual planet's eccentricity can sometimes be derived from the light curve via the \"photoeccentric effect,\" the effect of a planet's eccentricity on the shape and duration of its light curve. This has only been studied for large planets and high signal-to-noise scenarios, raising the question of how well it can be measured for smaller planets or low signal-to-noise cases. We explore the limits of the photoeccentric effect over a wide range of planet parameters. The method hinges upon measuring g directly from the light curve, where g is the ratio of the planet's speed (projected on the plane of the sky) during transit to the speed expected for a circular orbit. We find that when the signal-to-noise in the measurement of g is <10, the ability to measure eccentricity with the photoeccentric effect decreases. We develop a \"rule of thumb\" that for per-point relative photometric uncertainties \u03c3 = {10^(\u20133), 10^(\u20134), 10^(\u20135)}, the critical values of the planet-star radius ratio are R_p /R_\u2605 \u2248 {0.1, 0.05, 0.03} for Kepler-like 30 minute integration times. We demonstrate how to predict the best-case uncertainty in eccentricity that can be found with the photoeccentric effect for any light curve. This clears the path to study eccentricities of individual planets of various sizes in the Kepler sample and future transit surveys.", "date": "2015-01-20", "date_type": "published", "publication": "Astrophysical Journal", "volume": "799", "number": "1", "publisher": "American Astronomical Society", "pagerange": "Art. No. 17", "id_number": "CaltechAUTHORS:20150227-140952698", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150227-140952698", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "Carolyn Ash SURF Fellowship" }, { "agency": "NASA Hubble Fellowship", "grant_number": "HF-51313.01-A" }, { "agency": "NASA", "grant_number": "NAS 5-26555" }, { "agency": "Alfred P. Sloan Foundation" }, { "agency": "David and Lucile Packard Foundation" }, { "agency": "University of California Berkeley Miller Institute for Basic Research in Science" }, { "agency": "Caltech Summer Undergraduate Research Fellowship (SURF)" } ] }, "doi": "10.1088/0004-637X/799/1/17", "primary_object": { "basename": "0004-637X_799_1_17.pdf", "url": "https://authors.library.caltech.edu/records/vsnjf-4km86/files/0004-637X_799_1_17.pdf" }, "related_objects": [ { "basename": "1412.0014v1.pdf", "url": "https://authors.library.caltech.edu/records/vsnjf-4km86/files/1412.0014v1.pdf" } ], "resource_type": "article", "pub_year": "2015", "author_list": "Price, Ellen M.; Rogers, Leslie A.; et el." }, { "id": "https://authors.library.caltech.edu/records/p5a4e-9ap44", "eprint_id": 78363, "eprint_status": "archive", "datestamp": "2023-08-22 14:46:24", "lastmod": "2023-10-26 00:02:35", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Giguere-M-J", "name": { "family": "Giguere", "given": "Matthew J." } }, { "id": "Fischer-D-A", "name": { "family": "Fischer", "given": "Debra A." }, "orcid": "0000-0003-2221-0861" }, { "id": "Payne-M-J", "name": { "family": "Payne", "given": "Matthew J." }, "orcid": "0000-0001-5133-6303" }, { "id": "Brewer-J-M-Astro", "name": { "family": "Brewer", "given": "John M." }, "orcid": "0000-0002-9873-1471" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "Andrew W." }, "orcid": "0000-0001-8638-0320" }, { "id": "Isaacson-H-T", "name": { "family": "Isaacson", "given": "Howard T." }, "orcid": "0000-0002-0531-1073" } ] }, "title": "Newly-Discovered Planets Orbiting HD 5319, HD 11506, HD 75784 and HD 10442 from the N2K Consortium", "ispublished": "pub", "full_text_status": "public", "keywords": "planetary systems; stars: individual (HD 5319 HD 11506 HD 75784 HD 10442)", "note": "\u00a9 2015 American Astronomical Society. \n\nReceived 2014 April 1. Accepted 2014 November 16. Published 2015 January 19. \n\nWe thank the referee for useful comments and suggestions. We are grateful to Geoff Marcy for his longstanding contributions to this program and for helping with the observing and data reduction. We also thank Camille Avestruz, Ana Bonaca, Kristina Douglas, Aurelia Giguere, Haven Giguere, Nicole Larsen, Jack Moriarty, and Adele Plunkett for useful discussions. We gratefully acknowledge the dedication and support of the Keck Observatory staff, in particular Grant Hill and Scott Dahm for their support with HIRES and Greg Wirth, Bob Kibrick, Craig Henry and Andrew Stemmer for supporting remote observing. We thank the NASA and Yale Telescope assignment committees for generous allocations of telescope time. This work was supported by NASA Headquarters under the NASA Earth and Space Science Fellowship Program\u2014Grant NNX13AM15H. Fischer acknowledges support from NASA grant NNX08AF42G and NASA Keck PI data analysis funds. This research has made use of the Extrasolar Planets Encyclopedia, available at exoplanet.eu, and the Exoplanet Orbit Database at exoplanets.org. This research has also made use of the SIMBAD database, operated at CDS, Strasbourg, France. Data presented herein were obtained at the W. M. Keck Observatory from telescope time allocated to the National Aeronautics and Space Administration through the agency's scientific partnership with the California Institute of Technology and the University of California. The Observatory was made possible by the generous financial support of the W. M. Keck Foundation. The authors extend thanks to those of native Hawaiian ancestry on whose sacred mountain of Mauna Kea we are privileged to be guests. Without their generous hospitality, the Keck observations presented herein would not have been possible.\n\nPublished - Giguere_2015_ApJ_799_89.pdf
Submitted - 1411.5374.pdf
", "abstract": "Initially designed to discover short-period planets, the N2K campaign has since evolved to discover new worlds at large separations from their host stars. Detecting such worlds will help determine the giant planet occurrence at semi-major axes beyond the ice line, where gas giants are thought to mostly form. Here we report four newly discovered gas giant planets (with minimum masses ranging from 0.4 to 2.1 M_(Jup)) orbiting stars monitored as part of the Next 2000 target stars (N2K) Doppler Survey program. Two of these planets orbit stars already known to host planets: HD 5319 and HD 11506. The remaining discoveries reside in previously unknown planetary systems: HD 10442 and HD 75784. The refined orbital period of the inner planet orbiting HD 5319 is 641 days. The newly discovered outer planet orbits in 886 days. The large masses combined with the proximity to a 4:3 mean motion resonance make this system a challenge to explain with current formation and migration theories. HD 11506 has one confirmed planet, and here we confirm a second. The outer planet has an orbital period of 1627.5 days, and the newly discovered inner planet orbits in 223.6 days. A planet has also been discovered orbiting HD 75784 with an orbital period of 341.7 days. There is evidence for a longer period signal; however, several more years of observations are needed to put tight constraints on the Keplerian parameters for the outer planet. Lastly, an additional planet has been detected orbiting HD 10442 with a period of 1043 days.", "date": "2015-01-20", "date_type": "published", "publication": "Astrophysical Journal", "volume": "799", "number": "1", "publisher": "American Astronomical Society", "pagerange": "Art. No. 89", "id_number": "CaltechAUTHORS:20170620-090148962", "issn": "1538-4357", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20170620-090148962", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA Earth and Space Science Fellowship", "grant_number": "NNX13AM15H" }, { "agency": "NASA", "grant_number": "NNX08AF42G" }, { "agency": "W. M. Keck Foundation" } ] }, "doi": "10.1088/0004-637X/799/1/89", "primary_object": { "basename": "1411.5374.pdf", "url": "https://authors.library.caltech.edu/records/p5a4e-9ap44/files/1411.5374.pdf" }, "related_objects": [ { "basename": "Giguere_2015_ApJ_799_89.pdf", "url": "https://authors.library.caltech.edu/records/p5a4e-9ap44/files/Giguere_2015_ApJ_799_89.pdf" } ], "resource_type": "article", "pub_year": "2015", "author_list": "Giguere, Matthew J.; Fischer, Debra A.; et el." }, { "id": "https://authors.library.caltech.edu/records/67rr9-p9514", "eprint_id": 56518, "eprint_status": "archive", "datestamp": "2023-08-20 04:34:39", "lastmod": "2023-10-23 15:31:12", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Dawson-R-I", "name": { "family": "Dawson", "given": "Rebekah I." }, "orcid": "0000-0001-9677-1296" }, { "id": "Murray-Clay-R-A", "name": { "family": "Murray-Clay", "given": "Ruth A." }, "orcid": "0000-0001-5061-0462" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" } ] }, "title": "The Photoeccentric Effect and Proto-hot Jupiters. III. A Paucity of Proto-hot Jupiters on Super-eccentric Orbits", "ispublished": "pub", "full_text_status": "public", "keywords": "planetary systems", "note": "\u00a9 2015 American Astronomical Society. \n\nReceived 2012 October 26; accepted 2014 October 20; published 2014 December 22.\n\nWe are thankful to the anonymous referee(s) for an insightful report that improved the paper, and in particular for advocating more conservative assumptions about the completeness of the Kepler pipeline. R.I.D. gratefully acknowledges the National Science Foundation Graduate Research Fellowship under grant DGE-1144152 and the Miller Institute for Basic Research in Science, University of California, Berkeley. J.A.J. is grateful for the generous grant support provided by the Alfred P. Sloan and David & Lucile Packard foundations. We are grateful to Smadar Naoz for many enlightening discussions and comments, including opening our eyes to other possibilities in Section 4, for which we also thank Simon Albrecht and Fred Rasio. Many thanks to Adrian Barker, Rick Greenberg, Renu Malhotra, Francesca Valsecchi, and especially Brad Hansen for tidal insights; to Katherine Deck, Will Farr, Vicky Kalogera, Yoram Lithwick, and Matthew Payne for helpful dynamical discussions; to Will Farr and Moritz G\u00fcnther for helpful statistical discussions; to Courtney Dressing and Francois Fressin for Kepler assistance; and to Joel Hartmann for helpful discussions about the ground-based sample. We are grateful to Subo Dong for constructive comments on a manuscript draft. Thanks to Joshua Carter, Boas Katz, Doug Lin, Geoff Marcy, Darin Ragozzine, Kevin Schlaufman, and Aristotle Socrates for helpful comments, and to Thomas Barclay, Christophe Burke, Jon Jenkins, and Jason Rowe for helpful discussions of Kepler's completeness for giant planets. We benefitted from helpful conversations with Thomas Barclay about candidate vetting and Howard Isaacson and Rea Kolb about false positives. We are very grateful to Chelsea Huang for helpful discussions and for providing us with a detrended light curve for KIC 6805414. R.I.D. thanks David Charbonneau, Sean Andrews, Debra Fischer,Matt Holman, and Abraham Loeb for helpful comments on the thesis chapter version of this manuscript. Special thanks to J. Zachary Gazak for helpful modifications to the TAP code. We thank D\u00e1ith\u00ed Stone for making his library of IDL routines available. This paper includes data collected by the Kepler mission. Funding for the Kepler mission is provided by the NASA Science Mission directorate. We are grateful to Kepler team for their work in making this revolutionizing mission possible and making the rich Kepler data set available. Some of the data presented in this paper were obtained from the Multimission Archive at the Space Telescope Science Institute (MAST). STScI is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS5-26555. Support for MAST for non-HST data is provided by the NASA Office of Space Science via grant NNX09AF08G and by other grants and contracts. This research has made use of the Exoplanet Orbit Database, and the NASA Exoplanet Archive, which is operated by the California Institute of Technology, under contract with the National Aeronautics and Space Administration under the Exoplanet Exploration Program.\n\nPublished - 0004-637X_798_2_66.pdf
", "abstract": "Gas giant planets orbiting within 0.1 AU of their host stars are unlikely to have formed in situ and are evidence for planetary migration. It is debated whether the typical hot Jupiter smoothly migrated inward from its formation location through the proto-planetary disk, or was perturbed by another body onto a highly eccentric orbit, which tidal dissipation subsequently shrank and circularized during close stellar passages. Socrates and collaborators predicted that the latter model should produce a population of super-eccentric proto-hot Jupiters readily observable by Kepler. We find a paucity of such planets in the Kepler sample, which is inconsistent with the theoretical prediction with 96.9% confidence. Observational effects are unlikely to explain this discrepancy. We find that the fraction of hot Jupiters with an orbital period P > 3 days produced by the star-planet Kozai mechanism does not exceed (at two-sigma) 44%. Our results may indicate that disk migration is the dominant channel for producing hot Jupiters with P > 3 days. Alternatively, the typical hot Jupiter may have been perturbed to a high eccentricity by interactions with a planetary rather than stellar companion, and began tidal circularization much interior to 1 AU after multiple scatterings. A final alternative is that early in the tidal circularization process at high eccentricities tidal circularization occurs much more rapidly than later in the process at low eccentricities, although this is contrary to current tidal theories.", "date": "2015-01-10", "date_type": "published", "publication": "Astrophysical Journal", "volume": "798", "number": "2", "publisher": "American Astronomical Society", "pagerange": "Art. No. 66", "id_number": "CaltechAUTHORS:20150409-094625686", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150409-094625686", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NSF Graduate Research Fellowship", "grant_number": "DGE-1144152" }, { "agency": "Miller Institute for Basic Research in Science" }, { "agency": "Alfred P. Sloan Foundation" }, { "agency": "David and Lucile Packard foundation" }, { "agency": "NASA", "grant_number": "NAS5-26555" }, { "agency": "NASA", "grant_number": "NNX09AF08G" }, { "agency": "NASA/Caltech" } ] }, "doi": "10.1088/0004-637X/798/2/66", "primary_object": { "basename": "0004-637X_798_2_66.pdf", "url": "https://authors.library.caltech.edu/records/67rr9-p9514/files/0004-637X_798_2_66.pdf" }, "resource_type": "article", "pub_year": "2015", "author_list": "Dawson, Rebekah I.; Murray-Clay, Ruth A.; et el." }, { "id": "https://authors.library.caltech.edu/records/73804-szv76", "eprint_id": 51378, "eprint_status": "archive", "datestamp": "2023-08-22 13:55:29", "lastmod": "2023-10-18 16:19:52", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Howard-A-W", "name": { "family": "Howard", "given": "Andrew W." }, "orcid": "0000-0001-8638-0320" }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "Geoffrey W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Fischer-D-A", "name": { "family": "Fischer", "given": "Debra A." }, "orcid": "0000-0003-2221-0861" }, { "id": "Isaacson-H-T", "name": { "family": "Isaacson", "given": "Howard" }, "orcid": "0000-0002-0531-1073" }, { "id": "Muirhead-P-S", "name": { "family": "Muirhead", "given": "Philip S." }, "orcid": "0000-0002-0638-8822" }, { "id": "Henry-G-W", "name": { "family": "Henry", "given": "Gregory W." }, "orcid": "0000-0003-4155-8513" }, { "id": "Boyajian-T-S", "name": { "family": "Boyajian", "given": "Tabetha S." }, "orcid": "0000-0001-9879-9313" }, { "id": "von-Braun-K", "name": { "family": "von Braun", "given": "Kaspar" }, "orcid": "0000-0002-5823-4630" }, { "id": "Becker-J-C", "name": { "family": "Becker", "given": "Juliette C." }, "orcid": "0000-0002-7733-4522" }, { "id": "Wright-J-T", "name": { "family": "Wright", "given": "Jason T." }, "orcid": "0000-0001-6160-5888" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" } ] }, "title": "The NASA-UC-UH ETA-Earth Program. IV. A Low-mass Planet Orbiting an M Dwarf 3.6 PC from Earth", "ispublished": "pub", "full_text_status": "public", "keywords": "planetary systems; stars: individual (Gliese 15 A); techniques: radial velocities", "note": "\u00a9 2014 The American Astronomical Society.\n\nReceived 2013 June 13; accepted 2014 August 13; published 2014 September 23.\n\nWe thank the many observers who contributed to the measurements reported here. We gratefully acknowledge the efforts and dedication of the Keck Observatory staff, especially Scott Dahm, Greg Doppman, Hien Tran, and Grant Hill for support of HIRES and Greg Wirth for support of remote observing. We thank Kevin Apps, Andrew Mann, Evan Sinukoff, and Calla Howard for helpful discussions.We are grateful to the time assignment committees of the University of Hawaii, the University of California, and NASA for their generous allocations of observing time. Without their long-term commitment to RV monitoring, this planet would likely remain unknown. We acknowledge R. Paul Butler and S.S. Vogt for many years of contributing to the data presented here. A.W.H. acknowledges NASA grant NNX12AJ23G. G.W.H. acknowledges support fromNASA, NSF, Tennessee State University, and the State of Tennessee through its Centers of Excellence program. J.A.J. gratefully acknowledges support from generous grants from the David & Lucile Packard and Alfred P. Sloan Foundations. This work made use of the SIMBAD database (operated at CDS,\nStrasbourg, France), NASA's Astrophysics Data System Bibliographic Services, and the NASA Star and Exoplanet Database (NStED). Finally, the authors wish to extend special thanks to those of Hawai'ian ancestry on whose sacred mountain of Mauna Kea we are privileged to be guests. Without their generous hospitality, the Keck observations presented herein would not have been possible.\n\nPublished - 0004-637X_794_1_51.pdf
Submitted - 1408.5645v1.pdf
", "abstract": "We report the discovery of a low-mass planet orbiting Gl\u200915\u2009A based on radial velocities from the Eta-Earth Survey using HIRES at Keck Observatory. Gl\u200915\u2009Ab is a planet with minimum mass M sin i = 5.35 \u00b1 0.75\u2009M_\u2295, orbital period P = 11.4433\u2009 \u00b1 \u20090.0016\u2009days, and an orbit that is consistent with circular. We characterize the host star using a variety of techniques. Photometric observations at Fairborn Observatory show no evidence for rotational modulation of spots at the orbital period to a limit of ~0.1 mmag, thus supporting the existence of the planet. We detect a second RV signal with a period of 44\u2009days that we attribute to rotational modulation of stellar surface features, as confirmed by optical photometry and the Ca\u2009ii H & K activity indicator. Using infrared spectroscopy from Palomar-TripleSpec, we measure an M2 V spectral type and a sub-solar metallicity ([M/H] = \u22120.22, [Fe/H] = \u22120.32). We measure a stellar radius of 0.3863 \u00b1 0.0021\u2009R_\u2609 based on interferometry from CHARA.", "date": "2014-10-10", "date_type": "published", "publication": "Astrophysical Journal", "volume": "794", "number": "1", "publisher": "American Astronomical Society", "pagerange": "Art. No. 51", "id_number": "CaltechAUTHORS:20141106-132427416", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20141106-132427416", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNX12AJ23G" }, { "agency": "NSF" }, { "agency": "Tennessee State University" }, { "agency": "State of Tennessee Centers of Excellence program" }, { "agency": "David and Lucile Packard Foundation" }, { "agency": "Alfred P. Sloan Foundation" } ] }, "doi": "10.1088/0004-637X/794/1/51", "primary_object": { "basename": "0004-637X_794_1_51.pdf", "url": "https://authors.library.caltech.edu/records/73804-szv76/files/0004-637X_794_1_51.pdf" }, "related_objects": [ { "basename": "1408.5645v1.pdf", "url": "https://authors.library.caltech.edu/records/73804-szv76/files/1408.5645v1.pdf" } ], "resource_type": "article", "pub_year": "2014", "author_list": "Howard, Andrew W.; Marcy, Geoffrey W.; et el." }, { "id": "https://authors.library.caltech.edu/records/qbsc6-c2h70", "eprint_id": 49214, "eprint_status": "archive", "datestamp": "2023-08-20 02:35:02", "lastmod": "2023-10-17 21:13:20", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Dawson-R-I", "name": { "family": "Dawson", "given": "Rebekah I." }, "orcid": "0000-0001-9677-1296" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" }, { "id": "Fabrycky-D-C", "name": { "family": "Fabrycky", "given": "Daniel C." }, "orcid": "0000-0003-3750-0183" }, { "id": "Foreman-Mackey-D", "name": { "family": "Foreman-Mackey", "given": "Daniel" }, "orcid": "0000-0002-9328-5652" }, { "id": "Murray-Clay-R-A", "name": { "family": "Murray-Clay", "given": "Ruth A." }, "orcid": "0000-0001-5061-0462" }, { "id": "Buchhave-L-A", "name": { "family": "Buchhave", "given": "Lars A." }, "orcid": "0000-0003-1605-5666" }, { "id": "Cargile-P-A", "name": { "family": "Cargile", "given": "Phillip A." } }, { "id": "Clubb-K-I", "name": { "family": "Clubb", "given": "Kelsey I." } }, { "id": "Fulton-B-J", "name": { "family": "Fulton", "given": "Benjamin J." }, "orcid": "0000-0003-3504-5316" }, { "id": "Hebb-L", "name": { "family": "Hebb", "given": "Leslie" }, "orcid": "0000-0003-1263-8637" }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "Andrew W." }, "orcid": "0000-0001-8638-0320" }, { "id": "Huber-Daniel", "name": { "family": "Huber", "given": "Daniel" }, "orcid": "0000-0001-8832-4488" }, { "id": "Shporer-A", "name": { "family": "Shporer", "given": "Avi" }, "orcid": "0000-0002-1836-3120" }, { "id": "Valenti-J-A", "name": { "family": "Valenti", "given": "Jeff A." }, "orcid": "0000-0003-3305-6281" } ] }, "title": "Large Eccentricity, Low Mutual Inclination: The Three-dimensional Architecture of a Hierarchical System of Giant Planets", "ispublished": "pub", "full_text_status": "public", "keywords": "planetary systems", "note": "\u00a9 2014 American Astronomical Society. \n\nReceived 2014 March 13; accepted 2014 June 12; published 2014 July 31. \n\nWe are grateful to the referee for a helpful report. We thank David Hogg, Gongjie Li, Katherine Deck, Joshua Carter,\nGuillaume H\u00e9brard, Boas Katz, Yoram Lithwick, Smadar Naoz,\nEugene Chiang, Scott Tremaine, Ellen Price, Leslie Rogers, Eric Ford, Cristobal Petrovich, and Doug Lin for helpful discussions. R.I.D. gratefully acknowledges the Miller Institute for Basic Research in Science, University of California Berkeley. J.A.J. is grateful for the generous grant support provided by the Alfred P. Sloan and David and Lucile Packard foundations. D.F.M. is supported by NASA under grant NNX12AI50G and the National Science Foundation under grant IIS-1124794. D.H. acknowledges\nsupport by an appointment to the NASA Postdoctoral\nProgram at Ames Research Center administered by Oak Ridge\nAssociated Universities, and NASA Grant NNX14AB92G issued\nthrough the Kepler Participating Scientist Program. This\nwork benefited from the Summer Program on Modern Statistical\nand Computational Methods for Analysis of Kepler Data,\nheld at SAMSI, Research Triangle Park, NC in 2013 June.\nThis paper includes data collected by the Kepler mission.\nFunding for the Kepler mission is provided by the NASA\nScience Mission directorate.We are grateful to the Kepler Team for their extensive efforts in producing such high-quality data.\nSome of the data presented in this paper were obtained from the\nMultimission Archive at the Space Telescope Science Institute\n(MAST). STScI is operated by the Association of Universities\nfor Research in Astronomy, Inc., under NASA contract NAS5-\n26555. Support for MAST for non-HST data is provided by the\nNASA Office of Space Science via grant NNX09AF08G and by\nother grants and contracts.\nWe are very grateful to Geoff Marcy and Howard Isaacson\nfor contributing to the radial-velocity observations of Kepler-\n419. J.A.J. is grateful for Keck/HIRES time allocated through\nthe Caltech Time Allocation Committee for some of the spectra\nused herein. The spectroscopic and radial-velocity measurements\npresented herein were obtained at the W.M. Keck Observatory,\nwhich is operated as a scientific partnership among the\nCalifornia Institute of Technology, the University of California,\nand the National Aeronautics and Space Administration. The\nObservatory was made possible by the generous financial support\nof the W.M. Keck Foundation. We gratefully acknowledge\nthe efforts and dedication of the Keck Observatory staff, especially\nScott Dahm, Greg Doppman, Hien Tran, and Grant Hill\nfor support of HIRES and Greg Wirth for support of remote observing.\nWe extend special thanks to those of Hawai'ian ancestry\non whose sacred mountain of Mauna Kea we are privileged to\nbe guests.Without their generous hospitality, the Keck observations\npresented herein would not have been possible.\nThis paper uses observations obtained with facilities of\nthe Las Cumbres Observatory Global Telescope. The Byrne\nObservatory at Sedgwick (BOS) is operated by the Las Cumbres\nObservatory Global Telescope Network and is located at the\nSedgwick Reserve, a part of the University of California Natural\nReserve System.\n\nPublished - 0004-637X_791_2_89.pdf
Submitted - 1405.5229v3.pdf
", "abstract": "We establish the three-dimensional architecture of the Kepler-419 (previously KOI-1474) system to be eccentric yet with a low mutual inclination. Kepler-419b is a warm Jupiter at semi-major axis \u0251 = 0.370^(+0.007)_(-0.006) AU with a large eccentricity (e = 0.85^(+0.08)_(-0.07)) measured via the \"photoeccentric effect.\" It exhibits transit timing variations (TTVs) induced by the non-transiting Kepler-419c, which we uniquely constrain to be a moderately eccentric (e = 0.184 \u00b1 0.002), hierarchically separated (a = 1.68 \u00b1 0.03 AU) giant planet (7.3 \u00b1 0.4 M J_(up)). We combine 16 quarters of Kepler photometry, radial-velocity (RV) measurements from the HIgh Resolution Echelle Spectrometer on Keck, and improved stellar parameters that we derive from spectroscopy and asteroseismology. From the RVs, we measure the mass of the inner planet to be 2.5 \u00b1 0.3 M J_(up) and confirm its photometrically measured eccentricity, refining the value to e = 0.83 \u00b1 0.01. The RV acceleration is consistent with the properties of the outer planet derived from TTVs. We find that despite their sizable eccentricities, the planets are coplanar to within 9^(+8)_(-6) degrees, and therefore the inner planet's large eccentricity and close-in orbit are unlikely to be the result of Kozai migration. Moreover, even over many secular cycles, the inner planet's periapse is most likely never small enough for tidal circularization. Finally, we present and measure a transit time and impact parameter from four simultaneous ground-based light curves from 1 m class telescopes, demonstrating the feasibility of ground-based follow-up of Kepler giant planets exhibiting large TTVs.", "date": "2014-08-20", "date_type": "published", "publication": "Astrophysical Journal", "volume": "791", "number": "2", "publisher": "American Astronomical Society", "pagerange": "Art. No. 89", "id_number": "CaltechAUTHORS:20140903-153256362", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140903-153256362", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "Miller Institute for Basic Research in Science" }, { "agency": "Alfred P. Sloan Foundation" }, { "agency": "David and Lucile Packard Foundation" }, { "agency": "NASA", "grant_number": "NNX12AI50G" }, { "agency": "NSF", "grant_number": "IIS-1124794" }, { "agency": "NASA Postdoctoral Program" }, { "agency": "NASA", "grant_number": "NNX14AB92G" }, { "agency": "NASA", "grant_number": "NAS 5-26555" }, { "agency": "NASA", "grant_number": "NNX09AF08G" }, { "agency": "W. M. Keck Foundation" } ] }, "doi": "10.1088/0004-637X/791/2/89", "primary_object": { "basename": "1405.5229v3.pdf", "url": "https://authors.library.caltech.edu/records/qbsc6-c2h70/files/1405.5229v3.pdf" }, "related_objects": [ { "basename": "0004-637X_791_2_89.pdf", "url": "https://authors.library.caltech.edu/records/qbsc6-c2h70/files/0004-637X_791_2_89.pdf" } ], "resource_type": "article", "pub_year": "2014", "author_list": "Dawson, Rebekah I.; Johnson, John Asher; et el." }, { "id": "https://authors.library.caltech.edu/records/d05r9-6pn83", "eprint_id": 49017, "eprint_status": "archive", "datestamp": "2023-08-22 13:22:48", "lastmod": "2023-10-17 20:36:43", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Law-N-M", "name": { "family": "Law", "given": "Nicholas M." }, "orcid": "0000-0001-9380-6457" }, { "id": "Morton-T-D", "name": { "family": "Morton", "given": "Tim" }, "orcid": "0000-0002-8537-5711" }, { "id": "Baranec-C", "name": { "family": "Baranec", "given": "Christoph" }, "orcid": "0000-0002-1917-9157" }, { "id": "Riddle-R-L", "name": { "family": "Riddle", "given": "Reed" }, "orcid": "0000-0002-0387-370X" }, { "id": "Ravichandran-Ganesh", "name": { "family": "Ravichandran", "given": "Ganesh" } }, { "id": "Ziegler-C", "name": { "family": "Ziegler", "given": "Carl" }, "orcid": "0000-0002-0619-7639" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" }, { "id": "Tendulkar-S-P", "name": { "family": "Tendulkar", "given": "Shriharsh P." }, "orcid": "0000-0003-2548-2926" }, { "id": "Bui-Khanh", "name": { "family": "Bui", "given": "Khanh" } }, { "id": "Burse-M-P", "name": { "family": "Burse", "given": "Mahesh P." } }, { "id": "Das-H-K", "name": { "family": "Das", "given": "H. K." } }, { "id": "Dekany-R-G", "name": { "family": "Dekany", "given": "Richard G." } }, { "id": "Kulkarni-S-R", "name": { "family": "Kulkarni", "given": "Shrinivas" }, "orcid": "0000-0001-5390-8563" }, { "id": "Punnadi-S", "name": { "family": "Punnadi", "given": "Sujit" } }, { "id": "Ramaprakash-A-N", "name": { "family": "Ramaprakash", "given": "A. N." } } ] }, "title": "Robotic Laser Adaptive Optics Imaging of 715 Kepler Exoplanet Candidates Using Robo-AO", "ispublished": "pub", "full_text_status": "public", "keywords": "binaries: close; instrumentation: adaptive optics; instrumentation: high angular resolution; methods: data analysis; methods: observational; planetary systems; planets and satellites: detection; planets and satellites: fundamental parameters", "note": "\u00a9 2014 The American Astronomical Society.\n\nReceived 2013 December 17; accepted 2014 June 2; published 2014 July 24.\n\nWe thank the anonymous referee for careful analysis and\nuseful comments on the manuscript. The Robo-AO system is\nsupported by collaborating partner institutions, the California Institute of Technology and the Inter-University Centre for Astronomy and Astrophysics, and by the National Science Foundation under grant Nos. AST-0906060 and AST-0960343, by the Mount Cuba Astronomical Foundation, by a gift from Samuel Oschin.We are grateful to the Palomar Observatory staff for their ongoing support of Robo-AO on the 60 inch telescope, particularly S. Kunsman, M. Doyle, J. Henning, R. Walters, G. Van Idsinga, B. Baker, K. Dunscombe and D. Roderick. We recognize and acknowledge the very significant cultural role and reverence that the summit of Mauna Kea has always had within the indigenous Hawaiian community. We are most fortunate to have the opportunity to conduct observations from this mountain. C.B. and J.A.J. acknowledge support from the Alfred P. Sloan Foundation. J.A.J. acknowledges support from the David and Lucile Packard Foundation.\nFacilities: PO:1.5m (Robo-AO), Keck:II (NIRC2-NGS)\n\nPublished - 0004-637X_791_1_35.pdf
Submitted - 1312.4958v2.pdf
", "abstract": "The Robo-AO Kepler Planetary Candidate Survey is observing every Kepler planet candidate host star with laser adaptive optics imaging to search for blended nearby stars, which may be physically associated companions and/or responsible for transit false positives. In this paper, we present the results from the 2012 observing season, searching for stars close to 715 Kepler planet candidate hosts. We find 53 companions, 43 of which are new discoveries. We detail the Robo-AO survey data reduction methods including a method of using the large ensemble of target observations as mutual point-spread-function references, along with a new automated companion-detection algorithm designed for large adaptive optics surveys. Our survey is sensitive to objects from \u22480.\"15 to 2.\"5 separation, with magnitude differences up to \u0394m \u2248 6. We measure an overall nearby-star probability for Kepler planet candidates of 7.4% \u00b1 1.0%, and calculate the effects of each detected nearby star on the Kepler-measured planetary radius. We discuss several Kepler Objects of Interest (KOIs) of particular interest, including KOI-191 and KOI-1151, which are both multi-planet systems with detected stellar companions whose unusual planetary system architecture might be best explained if they are \"coincident multiple\" systems, with several transiting planets shared between the two stars. Finally, we find 98% confidence evidence that short-period giant planets are two to three times more likely than longer-period planets to be found in wide stellar binaries.", "date": "2014-08-10", "date_type": "published", "publication": "Astrophysical Journal", "volume": "791", "number": "1", "publisher": "American Astronomical Society", "pagerange": "Art. No. 35", "id_number": "CaltechAUTHORS:20140828-085318560", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140828-085318560", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "Caltech" }, { "agency": "Inter-University Centre for Astronomy and Astrophysics" }, { "agency": "NSF", "grant_number": "AST-0906060" }, { "agency": "NSF", "grant_number": "AST-0960343" }, { "agency": "Mount Cuba Astronomical Foundation" }, { "agency": "Alfred P. Sloan Foundation" }, { "agency": "David and Lucile Packard Foundation" } ] }, "local_group": { "items": [ { "id": "Division-of-Geological-and-Planetary-Sciences" } ] }, "doi": "10.1088/0004-637X/791/1/35", "primary_object": { "basename": "0004-637X_791_1_35.pdf", "url": "https://authors.library.caltech.edu/records/d05r9-6pn83/files/0004-637X_791_1_35.pdf" }, "related_objects": [ { "basename": "1312.4958v2.pdf", "url": "https://authors.library.caltech.edu/records/d05r9-6pn83/files/1312.4958v2.pdf" } ], "resource_type": "article", "pub_year": "2014", "author_list": "Law, Nicholas M.; Morton, Tim; et el." }, { "id": "https://authors.library.caltech.edu/records/6a7zn-mby97", "eprint_id": 48596, "eprint_status": "archive", "datestamp": "2023-08-22 13:03:25", "lastmod": "2023-10-17 19:28:31", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Muirhead-P-S", "name": { "family": "Muirhead", "given": "Philip S." }, "orcid": "0000-0002-0638-8822" }, { "id": "Becker-J-C", "name": { "family": "Becker", "given": "Juliette C." }, "orcid": "0000-0002-7733-4522" }, { "id": "Feiden-G-A", "name": { "family": "Feiden", "given": "Gregory A." }, "orcid": "0000-0002-2012-7215" }, { "id": "Rojas-Ayala-B", "name": { "family": "Rojas-Ayala", "given": "B\u00e1rbara" } }, { "id": "Vanderburg-A", "name": { "family": "Vanderburg", "given": "Andrew" }, "orcid": "0000-0001-7246-5438" }, { "id": "Price-E-M", "name": { "family": "Price", "given": "Ellen M." } }, { "id": "Thorp-R", "name": { "family": "Thorp", "given": "Rachel" } }, { "id": "Law-N-M", "name": { "family": "Law", "given": "Nicholas M." }, "orcid": "0000-0001-9380-6457" }, { "id": "Riddle-R-L", "name": { "family": "Riddle", "given": "Reed" }, "orcid": "0000-0002-0387-370X" }, { "id": "Baranec-C", "name": { "family": "Baranec", "given": "Christoph" }, "orcid": "0000-0002-1917-9157" }, { "id": "Hamren-K-M", "name": { "family": "Hamren", "given": "Katherine" } }, { "id": "Schlawin-E", "name": { "family": "Schlawin", "given": "Everett" } }, { "id": "Covey-K-R", "name": { "family": "Covey", "given": "Kevin R." }, "orcid": "0000-0001-6914-7797" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" }, { "id": "Lloyd-J-P", "name": { "family": "Lloyd", "given": "James P." } } ] }, "title": "Characterizing the Cool KOIs. VI. H- and K-band Spectra of Kepler M Dwarf Planet-candidate Hosts", "ispublished": "pub", "full_text_status": "public", "keywords": "binaries: eclipsing; binaries: visual; planetary systems; stars: abundances; stars: fundamental parameters; stars: individual (KOI-2704, KOI-2842, KOI-4290, KOI-1725, KOI-3497); stars: late-type; stars: low-mass", "note": "\u00a9 2014 The American Astronomical Society.\n\nReceived 2014 February 9; accepted 2014 May 5; published 2014 June 18.\n\nWe thank Andrew Mann and Ryan Terrien for helping us implement their respective methods for measuring metallicities with infrared spectra. We thank the staff at Palomar Observatory for providing support during our many observation runs, including Bruce Baker, Mike Doyle, Jamey Eriksen, Carolyn Heffner, John Henning, Steven Kunsman, Dan McKenna, Jean Mueller, Kajsa Peffer, Kevin Rykoski, and Greg van Idsinga.\n\nThe Robo-AO system is supported by collaborating partner institutions, the California Institute of Technology and the Inter-University Centre for Astronomy and Astrophysics, and by the National Science Foundation under grant nos. AST-0906060 and AST-0960343, by the Mount Cuba Astronomical Foundation, by a gift from Samuel Oschin.\n\nC.B. acknowledges support from the Alfred P. Sloan Foundation. J.B. thanks Mr. and Mrs. Kenneth Adelman for providing funding for her 2012 Alain Porter Memorial Summer Undergraduate Research Fellowship. A.V. is supported by the National Science Foundation Graduate Research Fellowship under grant no. DGE1144152. J.A.J. is supported by generous grants from the David and Lucile Packard Foundation and the Alfred P. Sloan Foundation. This research has made use of the NASA Exoplanet Archive, which is operated by the California Institute of Technology, under contract with the National Aeronautics and Space Administration under the Exoplanet Exploration Program. Some of the Palomar 200 inch Telescope time was provided by Cornell University. P.S.M. acknowledges support for this work from the Hubble Fellowship Program, provided by NASA through Hubble Fellowship grant HST-HF-51326.01-A awarded by the STScI, which is operated by the AURA, Inc., for NASA, under contract NAS 5-26555.\n\nFacilities: Kepler - The Kepler Mission, Hale (TripleSpec) - Palomar Observatory's 5.1m Hale Telescope, PO:1.5m (Robo-AO) - Palomar Observatory's 1.5 meter Telescope\n\nPublished - 0067-0049_213_1_5.pdf
", "abstract": "We present H- and K-band spectra for late-type Kepler Objects of Interest (the \"Cool KOIs\"): low-mass stars with transiting-planet candidates discovered by NASA's Kepler Mission that are listed on the NASA Exoplanet Archive. We acquired spectra of 103 Cool KOIs and used the indices and calibrations of Rojas-Ayala et al. to determine their spectral types, stellar effective temperatures, and metallicities, significantly augmenting previously published values. We interpolate our measured effective temperatures and metallicities onto evolutionary isochrones to determine stellar masses, radii, luminosities, and distances, assuming the stars have settled onto the main sequence. As a choice of isochrones, we use a new suite of Dartmouth predictions that reliably include mid-to-late M dwarf stars. We identify five M4V stars: KOI-961 (confirmed as Kepler 42), KOI-2704, KOI-2842, KOI-4290, and the secondary component to visual binary KOI-1725, which we call KOI-1725 B. We also identify a peculiar star, KOI-3497, which has Na and Ca lines consistent with a dwarf star but CO lines consistent with a giant. Visible-wavelength adaptive optics imaging reveals two objects within a 1 arcsec diameter; however, the objects' colors are peculiar. The spectra and properties presented in this paper serve as a resource for prioritizing follow-up observations and planet validation efforts for the Cool KOIs and are all available for download online using the \"data behind the figure\" feature.", "date": "2014-07", "date_type": "published", "publication": "Astrophysical Journal Supplement Series", "volume": "213", "number": "1", "publisher": "American Astronomical Society", "pagerange": "Art. No. 5", "id_number": "CaltechAUTHORS:20140815-092515653", "issn": "0067-0049", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140815-092515653", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "Caltech Summer Undergraduate Research Fellowship (SURF)" }, { "agency": "Inter-University Centre for Astronomy and Astrophysics" }, { "agency": "NSF", "grant_number": "AST-0906060" }, { "agency": "NSF", "grant_number": "AST-0960343" }, { "agency": "Mt. Cuba Astronomical Foundation" }, { "agency": "Samuel Oschin" }, { "agency": "Alfred P. Sloan Foundation" }, { "agency": "2012 Alain Porter Memorial Summer Undergraduate Research Fellowship" }, { "agency": "NSF Graduate Research Fellowship", "grant_number": "DGE1144152" }, { "agency": "David and Lucile Packard Foundation" }, { "agency": "NASA Hubble Fellowship", "grant_number": "HST-HF-51326.01-A" } ] }, "doi": "10.1088/0067-0049/213/1/5", "primary_object": { "basename": "0067-0049_213_1_5.pdf", "url": "https://authors.library.caltech.edu/records/6a7zn-mby97/files/0067-0049_213_1_5.pdf" }, "resource_type": "article", "pub_year": "2014", "author_list": "Muirhead, Philip S.; Becker, Juliette C.; et el." }, { "id": "https://authors.library.caltech.edu/records/7vmn2-5v312", "eprint_id": 47074, "eprint_status": "archive", "datestamp": "2023-08-22 12:56:05", "lastmod": "2024-02-02 21:11:36", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Bechter-E-B", "name": { "family": "Bechter", "given": "Eric B." } }, { "id": "Crepp-J-R", "name": { "family": "Crepp", "given": "Justin R." }, "orcid": "0000-0003-0800-0593" }, { "id": "Ngo-Henry-Hoang-Khoi-Exoplanets", "name": { "family": "Ngo", "given": "Henry" }, "orcid": "0000-0001-5172-4859" }, { "id": "Knutson-H-A", "name": { "family": "Knutson", "given": "Heather A." }, "orcid": "0000-0002-5375-4725" }, { "id": "Batygin-K", "name": { "family": "Batygin", "given": "Konstantin" }, "orcid": "0000-0002-7094-7908" }, { "id": "Hinkley-S", "name": { "family": "Hinkley", "given": "Sasha" }, "orcid": "0000-0001-8074-2562" }, { "id": "Muirhead-P-S", "name": { "family": "Muirhead", "given": "Philip S." }, "orcid": "0000-0002-0638-8822" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "Andrew W." }, "orcid": "0000-0001-8638-0320" } ] }, "title": "WASP-12b and HAT-P-8b are Members of Triple Star Systems", "ispublished": "pub", "full_text_status": "public", "keywords": "astrometry; stars: individual (WASP-12, HAT-P-8); techniques: high angular resolution; techniques: photometric", "note": "\u00a9 2014 The American Astronomical Society.\n\nReceived 2013 July 25; accepted 2014 April 17; published 2014 May 16.\n\nThis research has made use of the SIMBAD database,\noperated at CDS, Strasbourg, France. Data presented herein\nwere obtained at the W.M. Keck Observatory, which is operated\nas a scientific partnership among the California Institute of\nTechnology, the University of California, and the National\nAeronautics and Space Administration. The Observatory was\nmade possible by the generous financial support of the W.M.\nKeck Foundation. J.A.J. is supported by generous grants from\nthe David and Lucile Packard Foundation and the Alfred P.\nSloan Foundation. B. T. M. is supported by the National Science\nFoundation Graduate Research Fellowship under Grant No.\nDGE1144469.\n\nPublished - 0004-637X_788_1_2.pdf
Submitted - 1307.6857v4.pdf
", "abstract": "We present high spatial resolution images that demonstrate that WASP-12b and HAT-P-8b orbit the primary stars of hierarchical triple star systems. In each case, two distant companions with colors and brightnesses consistent with M dwarfs co-orbit the hot Jupiter planet host as well as one another. Our adaptive optics images spatially resolve the secondary around WASP-12, previously identified by Bergfors et al. and Crossfield et al. into two distinct sources separated by 84.3 \u00b1 0.6 mas (21 \u00b1 3 AU). We find that the secondary to HAT-P-8, also identified by Bergfors et al., is in fact composed of two stars separated by 65.3 \u00b1 0.5 mas (15 \u00b1 1 AU). Our follow-up observations demonstrate physical association through common proper motion. HAT-P-8 C has a particularly low mass, which we estimate to be 0.18 \u00b1 0.02\u2009M\u2609 using photometry. Due to their hierarchy, WASP-12 BC and HAT-P-8 BC will enable the first dynamical mass determination for hot Jupiter stellar companions. These previously well studied planet hosts now represent higher-order multi-star systems with potentially complex dynamics, underscoring the importance of diffraction-limited imaging and providing additional context for understanding the migrant population of transiting hot Jupiters.", "date": "2014-06-10", "date_type": "published", "publication": "Astrophysical Journal", "volume": "788", "number": "1", "publisher": "American Astronomical Society", "pagerange": "Art. No. 2", "id_number": "CaltechAUTHORS:20140708-104037828", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140708-104037828", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "W. M. Keck Foundation" }, { "agency": "David and Lucile Packard Foundation" }, { "agency": "Alfred P. Sloan Foundation" }, { "agency": "NSF Graduate Research Fellowship", "grant_number": "DGE1144469" } ] }, "local_group": { "items": [ { "id": "Division-of-Geological-and-Planetary-Sciences" } ] }, "doi": "10.1088/0004-637X/788/1/2", "primary_object": { "basename": "0004-637X_788_1_2.pdf", "url": "https://authors.library.caltech.edu/records/7vmn2-5v312/files/0004-637X_788_1_2.pdf" }, "related_objects": [ { "basename": "1307.6857v4.pdf", "url": "https://authors.library.caltech.edu/records/7vmn2-5v312/files/1307.6857v4.pdf" } ], "resource_type": "article", "pub_year": "2014", "author_list": "Bechter, Eric B.; Crepp, Justin R.; et el." }, { "id": "https://authors.library.caltech.edu/records/168yb-s4k95", "eprint_id": 46372, "eprint_status": "archive", "datestamp": "2023-08-22 12:47:10", "lastmod": "2023-10-26 19:42:01", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Hartman-J-D", "name": { "family": "Hartman", "given": "J. D." }, "orcid": "0000-0001-8732-6166" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "J. A." }, "orcid": "0000-0001-9808-7172" }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "A. W." }, "orcid": "0000-0001-8638-0320" }, { "id": "Shporer-A", "name": { "family": "Shporer", "given": "A." }, "orcid": "0000-0002-1836-3120" }, { "id": "Fulton-B-J", "name": { "family": "Fulton", "given": "B. J." }, "orcid": "0000-0003-3504-5316" } ] }, "title": "HAT-P-44b, HAT-P-45b, and HAT-P-46b: Three Transiting Hot Jupiters in Possible Multi-planet Systems", "ispublished": "pub", "full_text_status": "public", "keywords": "planetary systems; stars: individual (HAT-P-44, HAT-P-45, HAT-P-46); techniques: photometric; techniques: spectroscopic", "note": "\u00a9 2014 American Astronomical Society. \n\nReceived 2013 August 13; accepted 2014 March 10; published 2014 April 24. \n\nHATNet operations have been funded in part by NASA grants\nNNG04GN74G, NNX08AF23G, and NNX13AJ15G. J.D.H., G.\u00c1.B., and W.B. received partial support from NSF grant AST-1108686. G.\u00c1.B., Z.C., and K.P. acknowledge partial support from NASA grant NNX09AB29G. G.T. acknowledges partial support from NASA grant NNX09AF59G. We acknowledge partial support also from the Kepler Mission under NASA Cooperative Agreement NCC2-1390 (PI: D.W.L.). G.K. thanks the Hungarian Scientific Research Foundation (OTKA) for support through grant K-81373. This research has made use of Keck telescope time granted through NOAO (program A284Hr) and NASA (N154Hr, N108Hr). This paper uses observations obtained with facilities of the Las Cumbres Observatory Global Telescope. Data presented in this paper are based on observations obtained at the HAT station at the Submillimeter Array of SAO, and the HAT station at the Fred Lawrence Whipple Observatory of SAO. We also thank Mount Stromlo Observatory and Siding Spring Observatory for granting us time on the ANU 2.3 m telescope. This research has made use of the Exoplanet Orbit Database and the Exoplanet Data Explorer at http://www.exoplanets.org.\n\nPublished - 1538-3881_147_6_128.pdf
Submitted - 1308.2937v1.pdf
", "abstract": "We report the discovery by the HATNet survey of three new transiting extrasolar planets orbiting moderately bright (V = 13.2, 12.8, and 11.9) stars. The planets have orbital periods of 4.3012, 3.1290, and 4.4631 days, masses of 0.35, 0.89, and 0.49 M_J, and radii of 1.24, 1.43, and 1.28 R_J. The stellar hosts have masses of 0.94, 1.26, and 1.28 M_\u2609. Each system shows significant systematic variations in its residual radial velocities, indicating the possible presence of additional components. Based on its Bayesian evidence, the preferred model for HAT-P-44 consists of two planets, including the transiting component, with the outer planet having a period of 872 days, eccentricity of 0.494 \u00b1 0.081, and a minimum mass of 4.0 M_J. Due to aliasing we cannot rule out alternative solutions for the outer planet having a period of 220 days or 438 days. For HAT-P-45, at present there is not enough data to justify the additional free parameters included in a multi-planet model; in this case a single-planet solution is preferred, but the required jitter of 22.5 \u00b1 6.3 m s^(\u20131) is relatively high for a star of this type. For HAT-P-46 the preferred solution includes a second planet having a period of 78 days and a minimum mass of 2.0 M_J, however the preference for this model over a single-planet model is not very strong. While substantial uncertainties remain as to the presence and/or properties of the outer planetary companions in these systems, the inner transiting planets are well characterized with measured properties that are fairly robust against changes in the assumed models for the outer planets. Continued radial velocity monitoring is necessary to fully characterize these three planetary systems, the properties of which may have important implications for understanding the formation of hot Jupiters.", "date": "2014-06", "date_type": "published", "publication": "Astronomical Journal", "volume": "147", "number": "6", "publisher": "American Astronomical Society", "pagerange": "Art. No. 128", "id_number": "CaltechAUTHORS:20140619-151037139", "issn": "0004-6256", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140619-151037139", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNG04GN74G" }, { "agency": "NASA", "grant_number": "NNX08AF23G" }, { "agency": "NASA", "grant_number": "NNX13AJ15G" }, { "agency": "NSF", "grant_number": "AST-1108686" }, { "agency": "NASA", "grant_number": "NNX09AB29G" }, { "agency": "NASA", "grant_number": "NNX09AF59G" }, { "agency": "NASA", "grant_number": "NCC2-1390" }, { "agency": "Hungarian Scientific Research Foundation (OTKA)", "grant_number": "K-81373" }, { "agency": "National Optical Astronomy Observatory (NOAO)", "grant_number": "A284Hr" }, { "agency": "NASA", "grant_number": "N154Hr" }, { "agency": "NASA", "grant_number": "N108Hr" } ] }, "doi": "10.1088/0004-6256/147/6/128", "primary_object": { "basename": "1308.2937v1.pdf", "url": "https://authors.library.caltech.edu/records/168yb-s4k95/files/1308.2937v1.pdf" }, "related_objects": [ { "basename": "1538-3881_147_6_128.pdf", "url": "https://authors.library.caltech.edu/records/168yb-s4k95/files/1538-3881_147_6_128.pdf" } ], "resource_type": "article", "pub_year": "2014", "author_list": "Hartman, J. D.; Johnson, J. A.; et el." }, { "id": "https://authors.library.caltech.edu/records/5wxqq-nbn83", "eprint_id": 43152, "eprint_status": "archive", "datestamp": "2023-08-22 12:30:14", "lastmod": "2024-02-02 21:08:23", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Knutson-H-A", "name": { "family": "Knutson", "given": "Heather A." }, "orcid": "0000-0002-5375-4725" }, { "id": "Fulton-B-J", "name": { "family": "Fulton", "given": "Benjamin J." }, "orcid": "0000-0003-3504-5316" }, { "id": "Montet-B-T", "name": { "family": "Montet", "given": "Benjamin T." }, "orcid": "0000-0001-7516-8308" }, { "id": "Kao-Melodie-M", "name": { "family": "Kao", "given": "Melodie" }, "orcid": "0000-0001-5125-1414" }, { "id": "Ngo-Henry-Hoang-Khoi-Exoplanets", "name": { "family": "Ngo", "given": "Henry" }, "orcid": "0000-0001-5172-4859" }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "Andrew W." }, "orcid": "0000-0001-8638-0320" }, { "id": "Crepp-J-R", "name": { "family": "Crepp", "given": "Justin R." }, "orcid": "0000-0003-0800-0593" }, { "id": "Hinkley-S", "name": { "family": "Hinkley", "given": "Sasha" }, "orcid": "0000-0001-8074-2562" }, { "id": "Bakos-G-\u00c1", "name": { "family": "Bakos", "given": "G\u00e1sp\u00e1r \u00c1." }, "orcid": "0000-0001-7204-6727" }, { "id": "Batygin-K", "name": { "family": "Batygin", "given": "Konstantin" }, "orcid": "0000-0002-7094-7908" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" }, { "id": "Morton-T-D", "name": { "family": "Morton", "given": "Timothy D." }, "orcid": "0000-0002-8537-5711" }, { "id": "Muirhead-P-S", "name": { "family": "Muirhead", "given": "Philip S." }, "orcid": "0000-0002-0638-8822" } ] }, "title": "Friends of Hot Jupiters. I. A Radial Velocity Search for Massive, Long-Period Companions to Close-In Gas Giant Planets", "ispublished": "pub", "full_text_status": "public", "keywords": "binaries: eclipsing \u2014 planetary systems \u2014 techniques: radial velocity, adaptive\noptics", "note": "\u00a9 2014 American Astronomical Society. Received 2013 December 3; accepted 2014 March 11; published 2014 April 3. We thank Jason Wright and Joshua Winn for their\nthoughtful input on early drafts of this paper. This work\nwas based on observations at the W. M. Keck Observa\ntory granted by the University of Hawaii, the University\nof California, and the California Institute of Technology.\nWe thank the observers who contributed to the measure\nments reported here and acknowledge the efforts of the\nKeck Observatory staff. We extend special thanks to\nthose of Hawaiian ancestry on whose sacred mountain of\nMauna Kea we are privileged to be guests. B.T.M. is\nsupported by the National Science Foundation Graduate\nResearch Fellowship under Grant No. DGE\u22121144469.\nJ.A.J. and G.B. are supported by grants from the David\nand Lucille Packard Foundation and the Alfred P. Sloan\nFoundation. P.S.M. acknowledges support for this work\nfrom the Hubble Fellowship Program, provided by NASA\nthrough Hubble Fellowship grant HST-HF-51326.01-A\nawarded by the STScI, which is operated by the AURA,\nInc., for NASA, under contract NAS 5-26555. S.H. is\nsupported by an NSF Astronomy and Astrophysics Post-\ndoctoral Fellowship under award AST-1203023. G.B. ac\nknowledges support from grant NSF AST-1108686.\nFacilities: Keck:I (HIRES), Keck:II (NIRC2)\n\nPublished - 0004-637X_785_2_126.pdf
Submitted - 1312.2954v1.pdf
", "abstract": "In this paper we search for distant massive companions to known transiting hot Jupiters that may have influenced the dynamical evolution of these systems. We present new radial velocity observations for a sample of 51 hot Jupiters obtained using the Keck HIRES instrument, and use these observations to search for long-term radial velocity accelerations. We find new, statistically significant accelerations in seven systems, including: HAT-P-10, HAT-P-20, HAT-P-22, HAT-P-29, HAT-P-32, WASP-10, and XO-2. We combine our radial velocity fits with Keck NIRC2 AO imaging data to place constraints on the allowed masses and orbital periods of the companions. The estimated masses of the companions range between 1-500 M_(Jup), with orbital semi-major axes typically between 1-75 AU. A significant majority of the companions detected by our survey are constrained to have minimum masses comparable to or larger than those of the short-period hot Jupiters in these systems, making them candidates for influencing the orbital evolution of the inner hot Jupiters. They also appear to occur preferentially in systems with more metal-rich host stars, and with typical orbital separations that are larger than those of multi-planet systems without hot Jupiters. We estimate a total occurrence rate of 55% +11% / -10% for companions with masses between 1-13 M_(Jup) and orbital semi-major axes between 1-20 AU in our sample. We find no statistically significant difference between the frequency of companions in hot Jupiter systems with misaligned or eccentric orbits and those with well-aligned, circular orbits. We combine our expanded sample of radial velocity measurements with constraints from transit and secondary eclipse observations to provide improved measurements of the physical and orbital characteristics of all of the hot Jupiters included in our survey.", "date": "2014-04-20", "date_type": "published", "publication": "Astrophysical Journal", "volume": "785", "number": "2", "publisher": "American Astronomical Society", "pagerange": "Art. No. 126", "id_number": "CaltechAUTHORS:20131223-152510330", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20131223-152510330", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NSF Graduate Research Fellowship", "grant_number": "DGE-1144469" }, { "agency": "David and Lucile Packard Foundation" }, { "agency": "Alfred P. Sloan Foundation" }, { "agency": "NASA Hubble Fellowship", "grant_number": "HST-HF-51326.01-A" }, { "agency": "NASA", "grant_number": "NAS 5-26555" }, { "agency": "NSF Astronomy and Astrophysics Fellowship", "grant_number": "AST-1203023" }, { "agency": "NSF", "grant_number": "AST-1108686" } ] }, "local_group": { "items": [ { "id": "Division-of-Geological-and-Planetary-Sciences" } ] }, "doi": "10.1088/0004-637X/785/2/126", "primary_object": { "basename": "0004-637X_785_2_126.pdf", "url": "https://authors.library.caltech.edu/records/5wxqq-nbn83/files/0004-637X_785_2_126.pdf" }, "related_objects": [ { "basename": "1312.2954v1.pdf", "url": "https://authors.library.caltech.edu/records/5wxqq-nbn83/files/1312.2954v1.pdf" } ], "resource_type": "article", "pub_year": "2014", "author_list": "Knutson, Heather A.; Fulton, Benjamin J.; et el." }, { "id": "https://authors.library.caltech.edu/records/emj45-vdf09", "eprint_id": 45267, "eprint_status": "archive", "datestamp": "2023-08-22 11:56:20", "lastmod": "2023-10-26 17:54:47", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Lockwood-A-C", "name": { "family": "Lockwood", "given": "Alexandra C." } }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John A." }, "orcid": "0000-0001-9808-7172" }, { "id": "Bender-Chad-F", "name": { "family": "Bender", "given": "Chad F." }, "orcid": "0000-0003-4384-7220" }, { "id": "Carr-J-S", "name": { "family": "Carr", "given": "John S." }, "orcid": "0000-0002-6695-3977" }, { "id": "Barman-T-S", "name": { "family": "Barman", "given": "Travis" }, "orcid": "0000-0002-7129-3002" }, { "id": "Richert-A-J-W", "name": { "family": "Richert", "given": "Alexander J. W." }, "orcid": "0000-0002-9613-6863" }, { "id": "Blake-G-A", "name": { "family": "Blake", "given": "Geoffrey A." }, "orcid": "0000-0003-0787-1610" } ] }, "title": "Near-IR Direct Detection of Water Vapor in Tau Bo\u00f6tis b", "ispublished": "pub", "full_text_status": "public", "keywords": "planets and satellites: atmospheres; techniques: spectroscopic", "note": "\u00a9 2014 American Astronomical Society.\n\nReceived 2013 October 15; accepted 2014 February 3; published 2014 February 24.\n\nThe W. M. Keck Observatory is operated as a scientific\npartnership among the California Institute of Technology, the\nUniversity of California and NASA, and was made possible\nby the financial support of the W. M. Keck Foundation.\nA.C.L. and G.A.B. gratefully acknowledge support from the\nNSF GRFP and AAG programs, JAJ the generous grants from\nthe David and Lucile Packard and Alfred P. Sloan Foundations, and C.F.B. support from the Center for Exoplanets and Habitable Worlds, which is supported by the Pennsylvania State University, the Eberly College of Science, and the Pennsylvania Space Grant Consortium. Basic research in infrared astronomy at the Naval Research Laboratory is supported by 6.1 base funding. We thank Jacques Sauval for kindly providing a copy of his solar linelist. Finally, the authors wish to acknowledge the significant cultural role of the summit of Mauna Kea.\n\nPublished - 2041-8205_783_2_L29.pdf
Submitted - 1402.0846v1.pdf
", "abstract": "We use high dynamic range, high-resolution L-band spectroscopy to measure the radial velocity (RV) variations of the hot Jupiter in the \u03c4 Bo\u00f6tis planetary system. The detection of an exoplanet by the shift in the stellar spectrum alone provides a measure of the planet's minimum mass, with the true mass degenerate with the unknown orbital inclination. Treating the \u03c4 Boo system as a high flux ratio double-lined spectroscopic binary permits the direct measurement of the planet's true mass as well as its atmospheric properties. After removing telluric absorption and cross-correlating with a model planetary spectrum dominated by water opacity, we measure a 6\u03c3 detection of the planet at K_p = 111 \u00b1 5 km s^(\u22121), with a 1\u03c3 upper limit on the spectroscopic flux ratio of 10^(\u22124). This RV leads to a planetary orbital inclination of i=45^(+3)_(-4)\u00b0 and a mass of M_p = 5.90^(+0.35)_(-0.20)M_Jup. We report the first detection of water vapor in the atmosphere of a non-transiting hot Jupiter, \u03c4 Boo b.", "date": "2014-03-10", "date_type": "published", "publication": "Astrophysical Journal Letters", "volume": "783", "number": "2", "publisher": "American Astronomical Society", "pagerange": "Art. No. L29", "id_number": "CaltechAUTHORS:20140429-083510877", "issn": "2041-8205", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140429-083510877", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NSF Graduate Research Fellowship" }, { "agency": "David and Lucile Packard Foundation" }, { "agency": "Alfred P. Sloan Foundation" }, { "agency": "Center for Exoplanets and Habitable Worlds" } ] }, "local_group": { "items": [ { "id": "Division-of-Geological-and-Planetary-Sciences" } ] }, "doi": "10.1088/2041-8205/783/2/L29", "primary_object": { "basename": "1402.0846v1.pdf", "url": "https://authors.library.caltech.edu/records/emj45-vdf09/files/1402.0846v1.pdf" }, "related_objects": [ { "basename": "2041-8205_783_2_L29.pdf", "url": "https://authors.library.caltech.edu/records/emj45-vdf09/files/2041-8205_783_2_L29.pdf" } ], "resource_type": "article", "pub_year": "2014", "author_list": "Lockwood, Alexandra C.; Johnson, John A.; et el." }, { "id": "https://authors.library.caltech.edu/records/chsjh-kgx92", "eprint_id": 45637, "eprint_status": "archive", "datestamp": "2023-08-19 23:43:17", "lastmod": "2023-10-26 18:07:45", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Burts-A-O", "name": { "family": "Burts", "given": "Alan O." } }, { "id": "Liao-Longyan", "name": { "family": "Liao", "given": "Longyan" } }, { "id": "Lu-Ying-Y", "name": { "family": "Lu", "given": "Ying Y." } }, { "id": "Tirrell-D-A", "name": { "family": "Tirrell", "given": "David A." }, "orcid": "0000-0003-3175-4596" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "Jeremiah A." }, "orcid": "0000-0001-9808-7172" } ] }, "title": "Brush-first and Click: Efficient Synthesis of Nanoparticles that Degrade and Release Doxorubicin in Response to Light", "ispublished": "pub", "full_text_status": "restricted", "note": "\u00a9 2013 The American Society of Photobiology.\n\nReceived 14 August 2013, accepted 30 September 2013.\n\nArticle first published online: 25 Nov. 2013.\n\nThis work has been supported in part by the MIT\nDepartment of Chemistry, the MIT Research Support Committee, and the\nMIT Lincoln Laboratories Advanced Concepts Committee.", "abstract": "New strategies for the synthesis of multifunctional particles that respond to external stimuli and release biologically relevant agents will enable the discovery of new formulations for drug delivery. In this article, we combine two powerful methods: brush-first ring-opening metathesis polymerization and copper-catalyzed azide\u2013alkyne cycloaddition click chemistry, for the synthesis of a novel class of brush-arm star polymers (BASPs) that simultaneously degrade and release the anticancer drug doxorubicin (DOX) in response to 365 nm light. In vitro cell viability studies were performed to study the toxicity of azide- and DOX-loaded BASPs. The former were completely nontoxic. The latter showed minimal toxicity in the absence of light; UV-triggered DOX release led to IC_(50) values that were similar to that of free DOX.", "date": "2014-03", "date_type": "published", "publication": "Photochemistry and Photobiology", "volume": "90", "number": "2", "publisher": "Wiley", "pagerange": "380-385", "id_number": "CaltechAUTHORS:20140509-095521349", "issn": "0031-8655", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140509-095521349", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "MIT Department of Chemistry" }, { "agency": "MIT Research Support Committee" }, { "agency": "MIT Lincoln Laboratories Advanced Concepts Committee" } ] }, "doi": "10.1111/php.12182", "resource_type": "article", "pub_year": "2014", "author_list": "Burts, Alan O.; Liao, Longyan; et el." }, { "id": "https://authors.library.caltech.edu/records/sz48e-25b78", "eprint_id": 43846, "eprint_status": "archive", "datestamp": "2023-08-22 11:35:33", "lastmod": "2023-10-25 23:56:22", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Collins-K-A", "name": { "family": "Collins", "given": "Karen A." }, "orcid": "0000-0001-6588-9574" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "Andrew W." }, "orcid": "0000-0001-8638-0320" }, { "id": "Hinkley-S", "name": { "family": "Hinkley", "given": "Sasha" }, "orcid": "0000-0001-8074-2562" }, { "id": "Fulton-B-J", "name": { "family": "Fulton", "given": "Benjamin J." }, "orcid": "0000-0003-3504-5316" } ] }, "title": "KELT-6b: A P ~ 7.9 Day Hot Saturn Transiting a Metal-poor Star with a Long-period Companion", "ispublished": "pub", "full_text_status": "public", "keywords": "instrumentation: adaptive optics; planetary systems; stars: individual (KELT-6, BD+31 2447, TYC 2532-556-1, HD 209458); techniques: photometric; techniques: spectroscopic", "note": "\u00a9 2014 American Astronomical Society. \n\nReceived 2013 September 16; accepted 2013 November 22; published 2014 January 10. \n\nK.A.C. was supported by a NASA Kentucky Space Grant Consortium Graduate Fellowship. Early work on KELT-North was supported by NASA Grant NNG04GO70G. J.A.P. and K.G.S. acknowledge support from the Vanderbilt Office of the Provost through the Vanderbilt Initiative in Data-intensive Astrophysics.\nE.L.N.J. gratefully acknowledges the support of the\nNational Science Foundation's PREST program, which helped\nto establish the Peter van de Kamp Observatory through grant\nAST-0721386. K.G.S. acknowledges the support of the National\nScience Foundation through PAARE Grant AST-0849736 and\nAAG Grant AST-1009810. Work by B.S.G. and T.G.B. was partially supported by NSF CAREER Grant AST-1056524. K.P.\nacknowledges support from NASA grant NNX09AB29G and\nNSF award number 1108686. We thank the anonymous referee\nfor a thoughtful reading of the manuscript and for useful suggestions. We thank Geoff Marcy and Howard Isaacson for Keck HIRES observations, calibration, and reduction of spectra to 1D form. The authors wish to recognize and acknowledge the very significant cultural role and reverence that the summit of Mauna Kea has always had within the indigenous Hawaiian community. We are most fortunate to have the opportunity to conduct observations from this mountain. The TRES and KeplerCam observations were obtained with partial support from the Kepler Mission through NASA Cooperative Agreement NNX11AB99A with the Smithsonian Astrophysical Observatory (PI: D.W.L.). A portion of this work was supported by the National Science Foundation under grant Nos. AST-1203023. We thank Roberto Zambelli of Societa Astronomica Lunae for participation in the KELT followup network. This work has made use of NASA's Astrophysics Data System, the Exoplanet Orbit Database at exoplanets.org, the Extrasolar Planet Encyclopedia at exoplanet.eu (Schneider et al. 2011), the SIMBAD database operated at CDS, Strasbourg, France, and Systemic (Meschiari et al. 2009). \n\nKELT is a joint project of The Ohio State University, Vanderbilt University, and Lehigh University.\n\nPublished - 1538-3881_147_2_39.pdf
Submitted - 1308.2296v2.pdf
", "abstract": "We report the discovery of KELT-6b, a mildly inflated Saturn-mass planet transiting a metal-poor host. The initial transit signal was identified in KELT-North survey data, and the planetary nature of the occulter was established using a combination of follow-up photometry, high-resolution imaging, high-resolution spectroscopy, and precise radial velocity measurements. The fiducial model from a global analysis including constraints from isochrones indicates that the V = 10.38 host star (BD+31 2447) is a mildly evolved, late-F star with T_(eff_ = 6102 \u00b1 43 K,_log g_* =4.07_(-0.07)^(+0.04), and [Fe/H] = \u20130.28 \u00b1 0.04, with an inferred mass M_* = 1.09 \u00b1 0.04 M_\u2609 and radius R_* =1.58_(-0.09)^(+0.16) ,R_\u2609. The planetary companion has mass M_P = 0.43 \u00b1 0.05 M_(Jup), radius R_p =1.19_(-0.08)^(+0.13),R_(Jup), surface gravity g_p = 2.86_(-0.08)^(+0.06), and density P_p = 0.31_(-0.08)^(+0.07), cm^(-3). The planet is on an orbit with semimajor axis \u0251 = 0.079 \u00b1 0.001 AU and eccentricity e = 0.22_(-0.10)^(+0.12), which is roughly consistent with circular, and has ephemeris of T_c(BJD_(TDB)) = 2456347.79679 \u00b1 0.00036 and P = 7.845631 \u00b1 0.000046 days. Equally plausible fits that employ empirical constraints on the host-star parameters rather than isochrones yield a larger planet mass and radius by ~4}-7}. KELT-6b has surface gravity and incident flux similar to HD 209458b, but orbits a host that is more metal poor than HD 209458 by ~0.3 dex. Thus, the KELT-6 system offers an opportunity to perform a comparative measurement of two similar planets in similar environments around stars of very different metallicities. The precise radial velocity data also reveal an acceleration indicative of a longer-period third body in the system, although the companion is not detected in Keck adaptive optics images.", "date": "2014-02", "date_type": "published", "publication": "Astronomical Journal", "volume": "147", "number": "2", "publisher": "American Astronomical Society", "pagerange": "Art. No. 39", "id_number": "CaltechAUTHORS:20140218-082654422", "issn": "0004-6256", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140218-082654422", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "Kentucky Space Grant Consortium" }, { "agency": "NASA", "grant_number": "NNG04GO70G" }, { "agency": "Vanderbilt University" }, { "agency": "NSF", "grant_number": "AST-0721386" }, { "agency": "NSF", "grant_number": "AST-0849736" }, { "agency": "NSF", "grant_number": "AST-1009810" }, { "agency": "NSF", "grant_number": "AST-1056524" }, { "agency": "NASA", "grant_number": "NNX09AB29G" }, { "agency": "NSF", "grant_number": "AST-1108686" }, { "agency": "NASA", "grant_number": "NNX11AB99A" }, { "agency": "NSF", "grant_number": "AST-1203023" } ] }, "doi": "10.1088/0004-6256/147/2/39", "primary_object": { "basename": "1308.2296v2.pdf", "url": "https://authors.library.caltech.edu/records/sz48e-25b78/files/1308.2296v2.pdf" }, "related_objects": [ { "basename": "1538-3881_147_2_39.pdf", "url": "https://authors.library.caltech.edu/records/sz48e-25b78/files/1538-3881_147_2_39.pdf" } ], "resource_type": "article", "pub_year": "2014", "author_list": "Collins, Karen A.; Johnson, John Asher; et el." }, { "id": "https://authors.library.caltech.edu/records/wsd9c-9d382", "eprint_id": 44302, "eprint_status": "archive", "datestamp": "2023-08-22 11:37:20", "lastmod": "2023-10-26 00:22:43", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "Geoffrey W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "Andrew W." }, "orcid": "0000-0001-8638-0320" }, { "id": "Ciardi-D-R", "name": { "family": "Ciardi", "given": "David" }, "orcid": "0000-0002-5741-3047" }, { "id": "Rogers-L-A", "name": { "family": "Rogers", "given": "Leslie" }, "orcid": "0000-0003-0638-3455" }, { "id": "Morton-T-D", "name": { "family": "Morton", "given": "Timothy" }, "orcid": "0000-0002-8537-5711" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" }, { "id": "Shporer-A", "name": { "family": "Shporer", "given": "Avi" }, "orcid": "0000-0002-1836-3120" } ] }, "title": "Masses, Radii, and Orbits of Small Kepler Planets: The Transition from Gaseous to Rocky Planets", "ispublished": "pub", "full_text_status": "public", "keywords": "planetary systems; planets and satellites: detection; stars: individual (Kepler-25, Kepler-37, Kepler-48, Kepler-68, Kepler-93, Kepler-94, Kepler-95, Kepler-96, Kepler-97, Kepler-98, Kepler-99, Kepler-100, Kepler-102, Kepler-103, Kepler-106, Kepler-109, Kepler-113, Kepler-131, Kepler-406, Kepler-407, Kepler-409); techniques: photometric; techniques: radial velocities", "note": "\u00a9 2014 American Astronomical Society. \n\nReceived 2013 October 28; accepted 2013 December 12; published 2014 January 13. \n\nBased in part on observations obtained at the W. M. Keck Observatory, which is operated by the University of California and the California Institute of Technology. \n\nKepler was competitively selected as the tenth NASA Discovery mission. Funding for this mission is provided by the NASA Science Mission Directorate. Some of the data presented herein were obtained at the W. M. Keck Observatory, which is operated as a scientific partnership among the California Institute of Technology, the University of California, and the National Aeronautics and Space Administration. The Keck Observatory was made possible by the generous financial support of the W. M. Keck Foundation. Some of the asteroseismology analysis was performed by the Stellar Astrophysics Centre which is funded by the Danish National Research Foundation (Grant DNRF106). The research is supported by the ASTERISK project (ASTERoseismic Investigations with SONG and Kepler) funded by the European Research Council (Grant 267864). D.H. is supported by an appointment to the NASA Postdoctoral Program at Ames Research Center, administered by Oak Ridge Associated Universities through a contract with NASA. W.J.C., Y.E., T.L.C., G.R.D, R.H and A.M. acknowledge financial support from the UK Science and Technology Facilities Council (STFC). S.B. acknowledges NSF grant AST-1105930. Funding for the Stellar Astrophysics Centre\nis provided by The Danish National Research Foundation\n(Grant agreement no.: DNRF106). The research is supported by\nthe ASTERISK project (ASTERoseismic Investigations with\nSONG and Kepler) funded by the European Research Council\n(Grant agreement no. 267864). S.H. acknowledges financial\nsupport from the Netherlands organisation for Scientific\nResearch (NWO). The research leading to the presented results has received funding from the European Research Council under the European Community's Seventh Framewrok Programme (FP7/2007-2013)/ERC grant agreement no. 338251\n(StellarAges).W. F.Welsh and J. A. Orosz acknowledge support\nfrom NASA through the Kepler Participating Scientist Program\nand from the NSF via grant AST-1109928. D. Fischer acknowledges support from NASA ADAP12-0172. O. R. Sanchis-Ojeda & J. N. Winn are supported by the Kepler Participating Scientist Program (PSP) through grant NNX12AC76G. E. Ford is partially supported by NASA PSP grants NNX08AR04G & NNX12AF73G. Eric Agol acknowledges NSF Career grant AST-0645416. R.L.G. has been partially supported by NASA co-operative agreement: NNX09AG09A. A. Santerne acknowledges the support by the European Research Council/European Community under the FP7 through Starting Grant agreement number 239953. The authors would like to thank the many people who gave so generously of their time to make this Mission a success. All Kepler data products are available to the public at the Mikulski Archive for Space Telescopes http://stdatu.stsci.edu/kepler and the spectra and their products are made available at the NExSci Exoplanet Archive and its CFOP Web site: http://exoplanetarchive.ipac.caltech.edu. We\nthank the many observers who contributed to the measurements\nreported here. We gratefully acknowledge the efforts and dedication of the Keck Observatory staff, especially Scott Dahm, Hien Tran, and Grant Hill for support with HIRES and Greg Wirth for support with remote observing. This work made use of the SIMBAD database (operated at CDS, Strasbourg, France) and NASA's Astrophysics Data System Bibliographic Services. This research has made use of the NASA Exoplanet Archive, which is operated by the California Institute of Technology, under contract with the National Aeronautics and Space Administration under the Exoplanet Exploration Program. Finally, the authors wish to extend special thanks to those of Hawai'ian ancestry on whose sacred mountain of Mauna Kea we are privileged to be guests. Without their generous hospitality, the Keck\nobservations presented herein would not have been possible.\n\nPublished - 0067-0049_210_2_20.pdf
Submitted - 1401.4195v1.pdf
", "abstract": "We report on the masses, sizes, and orbits of the planets orbiting 22 Kepler stars. There are 49 planet candidates around these stars, including 42 detected through transits and 7 revealed by precise Doppler measurements of the host stars. Based on an analysis of the Kepler brightness measurements, along with high-resolution imaging and spectroscopy, Doppler spectroscopy, and (for 11 stars) asteroseismology, we establish low false-positive probabilities (FPPs) for all of the transiting planets (41 of 42 have an FPP under 1%), and we constrain their sizes and masses. Most of the transiting planets are smaller than three times the size of Earth. For 16 planets, the Doppler signal was securely detected, providing a direct measurement of the planet's mass. For the other 26 planets we provide either marginal mass measurements or upper limits to their masses and densities; in many cases we can rule out a rocky composition. We identify six planets with densities above 5 g cm^(\u20133), suggesting a mostly rocky interior for them. Indeed, the only planets that are compatible with a purely rocky composition are smaller than ~2 R_\u2295. Larger planets evidently contain a larger fraction of low-density material (H, He, and H_2O).", "date": "2014-02", "date_type": "published", "publication": "Astrophysical Journal Supplement Series", "volume": "210", "number": "2", "publisher": "American Astronomical Society", "pagerange": "Art. No. 20", "id_number": "CaltechAUTHORS:20140313-103439116", "issn": "0067-0049", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140313-103439116", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "W. M. Keck Foundation" }, { "agency": "Danish National Research Foundation", "grant_number": "DNRF106" }, { "agency": "European Research Council (ERC)", "grant_number": "267864 ASTERISK" }, { "agency": "NASA Postdoctoral Program" }, { "agency": "Science and Technology Facilities Council (STFC)" }, { "agency": "NSF", "grant_number": "AST-1105930" }, { "agency": "Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO)" }, { "agency": "European Research Council (ERC)", "grant_number": "338251" }, { "agency": "NSF", "grant_number": "AST-1109928" }, { "agency": "NASA", "grant_number": "ADAP12-0172" }, { "agency": "NASA", "grant_number": "NNX12AC76G" }, { "agency": "NASA", "grant_number": "NNX08AR04G" }, { "agency": "NASA", "grant_number": "NNX12AF73G" }, { "agency": "NSF", "grant_number": "AST-0645416" }, { "agency": "NASA", "grant_number": "NNX09AG09A" }, { "agency": "European Research Council (ERC)", "grant_number": "239953" } ] }, "local_group": { "items": [ { "id": "Infrared-Processing-and-Analysis-Center-(IPAC)" } ] }, "doi": "10.1088/0067-0049/210/2/20", "primary_object": { "basename": "0067-0049_210_2_20.pdf", "url": "https://authors.library.caltech.edu/records/wsd9c-9d382/files/0067-0049_210_2_20.pdf" }, "related_objects": [ { "basename": "1401.4195v1.pdf", "url": "https://authors.library.caltech.edu/records/wsd9c-9d382/files/1401.4195v1.pdf" } ], "resource_type": "article", "pub_year": "2014", "author_list": "Marcy, Geoffrey W.; Howard, Andrew W.; et el." }, { "id": "https://authors.library.caltech.edu/records/brdse-rbh70", "eprint_id": 43859, "eprint_status": "archive", "datestamp": "2023-08-22 11:35:50", "lastmod": "2023-10-25 23:57:04", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Bastien-F-A", "name": { "family": "Bastien", "given": "Fabienne A." }, "orcid": "0000-0002-7243-1921" }, { "id": "Stassun-K-G", "name": { "family": "Stassun", "given": "Keivan G." }, "orcid": "0000-0002-3481-9052" }, { "id": "Pepper-J", "name": { "family": "Pepper", "given": "Joshua" }, "orcid": "0000-0002-3827-8417" }, { "id": "Wright-J-T", "name": { "family": "Wright", "given": "Jason T." }, "orcid": "0000-0001-6160-5888" }, { "id": "Aigrain-S", "name": { "family": "Aigrain", "given": "Suzanne" }, "orcid": "0000-0003-1453-0574" }, { "id": "Basri-G", "name": { "family": "Basri", "given": "Gibor" } }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John A." }, "orcid": "0000-0001-9808-7172" }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "Andrew W." }, "orcid": "0000-0001-8638-0320" }, { "id": "Walkowics-L-M", "name": { "family": "Walkowicz", "given": "Lucianne" } } ] }, "title": "Radial Velocity Variations of Photometrically Quiet, Chromospherically Inactive Kepler Stars: A Link Between RV Jitter and Photometric Flicker", "ispublished": "pub", "full_text_status": "public", "keywords": "stars: activity; stars: solar-type; techniques: photometric; techniques: radial velocities", "note": "\u00a9 2014 American Astronomical Society. Received 2012 December 31; accepted 2013 October 14; published 2013 December 30. We thank Geoff Marcy and the California Planet Search for\nsharing the RV rms values used in this work in advance of\npublication, and we thank John Brewer and Debra Fischer\nfor allowing us to report their v sin i's, also in advance of\npublication. Geoff Marcy and Howard Isaacson kindly obtained\nand shared with us additional Keck RV measurements of\nHD 177153. We additionally acknowledge helpful discussions\nwith Heather Cegla, Leslie Hebb, Steve Saar, and Angie\nWolfgang. F.A.B. acknowledges support from a NASA Harriett\nJenkins pre-doctoral fellowship and from a Vanderbilt Provost\ngraduate fellowship. This work was supported in part by NASA\nADAP grant NNX12AE22G to K.G.S.\nThe Center for Exoplanets and Habitable Worlds is supported\nby the Pennsylvania State University, the Eberly College of\nScience, and the Pennsylvania Space Grant Consortium.\nSome of the data herein were obtained at the W.M. Keck\nObservatory, which is operated as a scientific partnership\namong the California Institute of Technology, the University of\nCalifornia, and the National Aeronautics and Space Administration.\nThe Observatory was made possible by the generous\nfinancial support of the W. M. Keck Foundation.\nThe authors wish to recognize and acknowledge the very\nsignificant cultural role and reverence that the summit of Mauna\nKea has always had within the indigenous Hawaiian community.\nWe are most fortunate to have the opportunity to conduct\nobservations from this mountain.\n\nPublished - 1538-3881_147_2_29.pdf
Submitted - 1310.7152v1.pdf
", "abstract": "We compare stellar photometric variability, as measured from Kepler light curves by Basri et al., with measurements of radial velocity (RV) rms variations of all California Planet Search overlap stars. We newly derive rotation periods from the Kepler light curves for all of the stars in our study sample. The RV variations reported herein range from less than 4 to 135 m s^(\u20131), yet the stars all have amplitudes of photometric variability less than 3 mmag, reflecting the preference of the RV program for chromospherically \"quiet\" stars. Despite the small size of our sample, we find with high statistical significance that the RV rms manifests strongly in the Fourier power spectrum of the light curve: stars that are noisier in RV have a greater number of frequency components in the light curve. We also find that spot models of the observed light curves systematically underpredict the observed RV variations by factors of ~2-1000, likely because the low-level photometric variations in our sample are driven by processes not included in simple spot models. The stars best fit by these models tend to have simpler light curves, dominated by a single relatively high-amplitude component of variability. Finally, we demonstrate that the RV rms behavior of our sample can be explained in the context of the photometric variability evolutionary diagram introduced by Bastien et al. We use this diagram to derive the surface gravities of the stars in our sample, revealing many of them to have moved off the main sequence. More generally, we find that the stars with the largest RV rms are those that have evolved onto the \"flicker floor\" sequence in that diagram, characterized by relatively low amplitude but highly complex photometric variations which grow as the stars evolve to become subgiants.", "date": "2014-02", "date_type": "published", "publication": "Astronomical Journal", "volume": "147", "number": "2", "publisher": "American Astronomical Society", "pagerange": "Art. No. 29", "id_number": "CaltechAUTHORS:20140218-151749997", "issn": "0004-6256", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140218-151749997", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA Harriett Jenkins predoctoral fellowship" }, { "agency": "Vanderbilt University" }, { "agency": "NASA", "grant_number": "NNX12AE22G" }, { "agency": "Pennsylvania State University" }, { "agency": "Eberly College of Science" }, { "agency": "Pennsylvania Space Grant Consortium" }, { "agency": "W. M. Keck Foundation" } ] }, "doi": "10.1088/0004-6256/147/2/29", "primary_object": { "basename": "1310.7152v1.pdf", "url": "https://authors.library.caltech.edu/records/brdse-rbh70/files/1310.7152v1.pdf" }, "related_objects": [ { "basename": "1538-3881_147_2_29.pdf", "url": "https://authors.library.caltech.edu/records/brdse-rbh70/files/1538-3881_147_2_29.pdf" } ], "resource_type": "article", "pub_year": "2014", "author_list": "Bastien, Fabienne A.; Stassun, Keivan G.; et el." }, { "id": "https://authors.library.caltech.edu/records/myt11-6dt47", "eprint_id": 78631, "eprint_status": "archive", "datestamp": "2023-08-22 11:31:37", "lastmod": "2023-10-26 00:14:40", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Crepp-J-R", "name": { "family": "Crepp", "given": "Justin R." }, "orcid": "0000-0003-0800-0593" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "Andrew W." }, "orcid": "0000-0001-8638-0320" }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "Geoffrey W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Brewer-J-M-Astro", "name": { "family": "Brewer", "given": "John M." }, "orcid": "0000-0002-9873-1471" }, { "id": "Fischer-D-A", "name": { "family": "Fischer", "given": "Debra A." }, "orcid": "0000-0003-2221-0861" }, { "id": "Wright-J-T", "name": { "family": "Wright", "given": "Jason T." }, "orcid": "0000-0001-6160-5888" }, { "id": "Isaacson-H-T", "name": { "family": "Isaacson", "given": "Howard" }, "orcid": "0000-0002-0531-1073" } ] }, "title": "The TRENDS High-Contrast Imaging Survey. V. Discovery of an Old and Cold Benchmark T-dwarf Orbiting the Nearby G-star HD 19467", "ispublished": "pub", "full_text_status": "public", "keywords": "astrometry; brown dwarfs; stars: individual (HD 19467 GJ 3200 HIP 14501); techniques: high angular resolution; techniques: radial velocities", "note": "\u00a9 2014 American Astronomical Society. \n\nReceived 2013 October 11. Accepted 2013 October 31. Published 2014 January 2. \n\nThe TRENDS high-contrast imaging program is supported by NASA Origins of Solar Systems grant NNX13AB03G. J.A.J. is supported by generous grants from the David and Lucile Packard Foundation and the Alfred P. Sloan Foundation. This research has made use of the SIMBAD database, operated at CDS, Strasbourg, France. Data presented herein were obtained at the W. M. Keck Observatory, which is operated as a scientific partnership among the California Institute of Technology, the University of California, and the National Aeronautics and Space Administration. The Observatory was made possible by the generous financial support of the W. M. Keck Foundation. The Center for Exoplanets and Habitable Worlds is supported by the Pennsylvania State University, the Eberly College of Science, and the Pennsylvania Space Grant Consortium.\n\nPublished - Crepp_2014_ApJ_781_29.pdf
Submitted - 1311.0280.pdf
", "abstract": "The nearby Sun-like star HD 19467 shows a subtle radial velocity (RV) acceleration of \u20131.37 \u00b1 0.09 m s^(\u20131) yr^(\u20131) over a 16.9 yr time baseline (an RV trend), hinting at the existence of a distant orbiting companion. We have obtained high-contrast images of the star using NIRC2 at Keck Observatory and report the direct detection of the body that causes the acceleration. The companion, HD 19467 B, is \u0394K_s = 12.57 \u00b1 0.09 mag fainter than its parent star (contrast ratio of 9.4 \u00d7 10^(\u20136)), has blue colors J \u2013 K_s = \u20130.36 \u00b1 0.14 (J \u2013 H = \u20130.29 \u00b1 0.15), and is separated by \u03c1 = 1.\"\u00b1 0.\"004 (51.1 \u00b1 1.0 AU). Follow-up astrometric measurements obtained over a 1.1 yr time baseline demonstrate physical association through common parallactic and proper motion. We calculate a firm lower-limit of m \u2a7e 51.9^(+3.6)_(-4.3)M_J for the companion mass from orbital dynamics using a combination of Doppler observations and imaging. We estimate a model-dependent mass of m=56.7^(+4.6)_(-7.2)M_(Jup) from a gyrochronological age of 4.3^(+1.0)_(-1.2) Gyr. Isochronal analysis suggests a much older age of 9 \u00b1 1 Gyr, which corresponds to a mass of m = 67.4^(+0.9)_(-1.5)M_J. HD 19467 B's measured colors and absolute magnitude are consistent with a late T dwarf [\u2248T5-T7]. We may infer a low metallicity of [Fe/H] =\u20130.15 \u00b1 0.04 for the companion from its G3V parent star. HD 19467 B is the first directly imaged benchmark T dwarf found orbiting a Sun-like star with a measured RV acceleration.", "date": "2014-01-20", "date_type": "published", "publication": "Astrophysical Journal", "volume": "781", "number": "1", "publisher": "American Astronomical Society", "pagerange": "Art. No. 29", "id_number": "CaltechAUTHORS:20170628-074448626", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20170628-074448626", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNX13AB03G" }, { "agency": "David and Lucile Packard Foundation" }, { "agency": "Alfred P. Sloan Foundation" }, { "agency": "W. M. Keck Foundation" }, { "agency": "Pennsylvania State University" }, { "agency": "Eberly College of Science" }, { "agency": "Pennsylvania Space Grant Consortium" } ] }, "doi": "10.1088/0004-637X/781/1/29", "primary_object": { "basename": "1311.0280.pdf", "url": "https://authors.library.caltech.edu/records/myt11-6dt47/files/1311.0280.pdf" }, "related_objects": [ { "basename": "Crepp_2014_ApJ_781_29.pdf", "url": "https://authors.library.caltech.edu/records/myt11-6dt47/files/Crepp_2014_ApJ_781_29.pdf" } ], "resource_type": "article", "pub_year": "2014", "author_list": "Crepp, Justin R.; Johnson, John Asher; et el." }, { "id": "https://authors.library.caltech.edu/records/apwvh-9w621", "eprint_id": 43726, "eprint_status": "archive", "datestamp": "2023-08-22 11:30:09", "lastmod": "2023-10-25 23:49:01", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Montet-B-T", "name": { "family": "Montet", "given": "Benjamin T." }, "orcid": "0000-0001-7516-8308" }, { "id": "Crepp-J-R", "name": { "family": "Crepp", "given": "Justin R." }, "orcid": "0000-0003-0800-0593" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "Andrew W." }, "orcid": "0000-0001-8638-0320" }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "Geoffrey W." }, "orcid": "0000-0002-2909-0113" } ] }, "title": "The TRENDS High-contrast Imaging Survey. IV. The Occurrence Rate of Giant Planets around M Dwarfs", "ispublished": "pub", "full_text_status": "public", "keywords": "methods: observational; planets and satellites: detection; planets and satellites: fundamental parameters; techniques: high angular resolution; techniques: radial velocities", "note": "\u00a9 2014 American Astronomical Society.\n\nReceived 2013 July 22; accepted 2013 December 4; published 2014 January 2.\n\nMost of the data presented herein were obtained at the\nW.M. Keck Observatory, which is operated as a scientific\npartnership among the California Institute of Technology, the University of California, and the National Aeronautics and Space Administration. The Observatory was made possible by the generous financial support of the W.M. Keck Foundation. We thank the staff of the Palomar Observatory for their help in maximizing the efficiency and quality of the 200\" Hale Telescope. This publication makes use of data products from the Two Micron All-Sky Survey, which is a joint project of the University of Massachusetts and the Infrared Processing and Analysis Center/California Institute of Technology, funded by the National Aeronautics and Space Administration and the National Science Foundation. We made use of the SIMBAD database operated at CDS, Strasbourg, France, and NASA's Astrophysics Data System Bibliographic Services. We thank Jon Swift for collecting NIRC2 observations of HIP 57050. We also thank Brendan Bowler for helpful comments on an early version\nof this manuscript. B.T.M. is supported by the National Science Foundation Graduate Research Fellowship under grant No. DGE1144469. The TRENDS high-contrast imaging program\nis supported by NASA Origins grant NNX13AB03G. J.A.J. is\nsupported by generous grants from the David and Lucile Packard Foundation and the Alfred P. Sloan Foundation. B.T.M. would also like to thank the Statistical and Applied Mathematical Sciences Institute; conversations at the 2013 June Modern Statistical and Computational Methods for Analysis of Kepler Data workshop at SAMSI improved the final version of this manuscript. Finally, the authors recognize and acknowledge the very significant cultural role and reverence that the summit of Mauna Kea has always had within the indigenous Hawaiian community. We are most fortunate to have the opportunity to conduct observations from this mountain.\n\nPublished - 0004-637X_781_1_28.pdf
Submitted - 1307.5849v2.pdf
", "abstract": "Doppler-based planet surveys have discovered numerous giant planets but are incomplete beyond several AU. At larger star\u2013planet separations, direct planet detection through high-contrast imaging has proven successful, but this technique is sensitive only to young planets and characterization relies upon theoretical evolution models. Here we demonstrate that radial velocity measurements and high-contrast imaging can be combined to overcome these issues. The presence of widely separated companions can be deduced by identifying an acceleration (long-term trend) in the radial velocity of a star. By obtaining high spatial resolution follow-up imaging observations, we rule out scenarios in which such accelerations are caused by stellar binary companions with high statistical confidence. We report results from an analysis of Doppler measurements of a sample of 111 M-dwarf stars with a median of 29 radial velocity observations over a median time baseline of 11.8 yr. By targeting stars that exhibit a radial velocity acceleration (\"trend\") with adaptive optics imaging, we determine that 6.5% \u00b1 3.0% of M-dwarf stars host one or more massive companions with 1 < m/M_J < 13 and 0 < a < 20 AU. These results are lower than analyses of the planet occurrence rate around higher-mass stars. We find the giant planet occurrence rate is described by a double power law in stellar mass M and metallicity F \u2261 [Fe/H] such that f(M, F) = 0.039^+0.056)_(-0.028)M^(0.8)^(+1.1)_(-0.9) 10^(3.8\u00b11.2). Our results are consistent with gravitational microlensing measurements of the planet occurrence rate; this study represents the first model-independent comparison with microlensing observations.", "date": "2014-01-20", "date_type": "published", "publication": "Astrophysical Journal", "volume": "781", "number": "1", "publisher": "American Astronomical Society", "pagerange": "Art. No. 28", "id_number": "CaltechAUTHORS:20140207-115022830", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140207-115022830", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NSF Graduate Research Fellowship", "grant_number": "DGE-1144469" }, { "agency": "NASA", "grant_number": "NNX13AB03G" }, { "agency": "David and Lucile Packard Foundation" }, { "agency": "Alfred P. Sloan Foundation" }, { "agency": "W. M. Keck Foundation" } ] }, "doi": "10.1088/0004-637X/781/1/28", "primary_object": { "basename": "0004-637X_781_1_28.pdf", "url": "https://authors.library.caltech.edu/records/apwvh-9w621/files/0004-637X_781_1_28.pdf" }, "related_objects": [ { "basename": "1307.5849v2.pdf", "url": "https://authors.library.caltech.edu/records/apwvh-9w621/files/1307.5849v2.pdf" } ], "resource_type": "article", "pub_year": "2014", "author_list": "Montet, Benjamin T.; Crepp, Justin R.; et el." }, { "id": "https://authors.library.caltech.edu/records/vx9f6-vde31", "eprint_id": 78433, "eprint_status": "archive", "datestamp": "2023-08-19 22:18:11", "lastmod": "2023-10-26 00:05:39", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Howard-A-W", "name": { "family": "Howard", "given": "Andrew W." }, "orcid": "0000-0001-8638-0320" }, { "id": "Sanchis-Ojeda-R", "name": { "family": "Sanchis-Ojeda", "given": "Roberto" }, "orcid": "0000-0002-6193-972X" }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "Geoffrey W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" }, { "id": "Winn-J-N", "name": { "family": "Winn", "given": "Joshua N." }, "orcid": "0000-0002-4265-047X" }, { "id": "Isaacson-H-T", "name": { "family": "Isaacson", "given": "Howard" }, "orcid": "0000-0002-0531-1073" }, { "id": "Fischer-D-A", "name": { "family": "Fischer", "given": "Debra A." }, "orcid": "0000-0003-2221-0861" }, { "id": "Fulton-B-J", "name": { "family": "Fulton", "given": "Benjamin J." }, "orcid": "0000-0003-3504-5316" }, { "id": "Sinukoff-E", "name": { "family": "Sinukoff", "given": "Evan" }, "orcid": "0000-0002-5658-0601" }, { "id": "Fortney-J-J", "name": { "family": "Fortney", "given": "Jonathan J." }, "orcid": "0000-0002-9843-4354" } ] }, "title": "A rocky composition for an Earth-sized exoplanet", "ispublished": "pub", "full_text_status": "public", "note": "\u00a9 2013 Macmillan Publishers Limited. \n\nReceived 25 September 2013; Accepted 11 October 2013; Published online 30 October 2013. \n\nThis Letter and another were submitted simultaneously and are the result of coordinated, independent radial-velocity observations and analyses of Kepler-78. We thank the HARPS-N team for their collegiality. We also thank E. Chiang, I. Crossfield, R. Kolbl, E. Petigura, and D. Huber for discussions, S. Howard for support, C. Dressing for a convenient packaging of stellar models, and A. Hatzes for a thorough review. This work was based on observations at the W. M. Keck Observatory granted by the University of Hawaii, the University of California, and the California Institute of Technology. We thank the observers who contributed to the measurements reported here and acknowledge the efforts of the Keck Observatory staff. We thank those of Hawaiian ancestry on whose sacred mountain of Mauna Kea we are guests. Kepler was competitively selected as the tenth Discovery mission with funding provided by NASA's Science Mission Directorate. J.N.W. and R.S.-O. acknowledge support from the Kepler Participating Scientist programme. A.W.H. acknowledges funding from NASA grant NNX12AJ23G. \n\nAuthor Contributions: This measurement was conceived and planned by A.W.H., G.W.M., J.A.J., J.N.W. and R.S.-O. HIRES observations were conducted by A.W.H., G.W.M., H.I, B.J.F. and E.S. The HIRES spectra were reduced and Doppler-analysed by A.W.H., G.W.M., H.I. and J.A.J. Data modelling was done primarily by A.W.H. and R.S.-O. A.W.H. was the primary author of the manuscript, with important contributions from J.N.W., R.S.-O. and J.J.F. Figures were generated by A.W.H., R.S.-O, B.J.F. and E.S. All authors discussed the results, commented on the manuscript and contributed to the interpretation. \n\nThe authors declare no competing financial interests.\n\nSubmitted - 1310.7988.pdf
Supplemental Material - nature12767-s1.pdf
", "abstract": "Planets with sizes between that of Earth (with radius R\u2295) and Neptune (about 4 R\u2295) are now known to be common around Sun-like stars. Most such planets have been discovered through the transit technique, by which the planet's size can be determined from the fraction of starlight blocked by the planet as it passes in front of its star. Measuring the planet's mass\u2014and hence its density, which is a clue to its composition\u2014is more difficult. Planets of size 2\u20134 R\u2295 have proved to have a wide range of densities, implying a diversity of compositions, but these measurements did not extend to planets as small as Earth. Here we report Doppler spectroscopic measurements of the mass of the Earth-sized planet Kepler-78b, which orbits its host star every 8.5\u2009hours (ref. 6). Given a radius of 1.20\u2009\u00b1\u20090.09 R\u2295 and a mass of 1.69\u2009\u00b1\u20090.41 M\u2295, the planet's mean density of 5.3\u2009\u00b1\u20091.8\u2009g\u2009cm^(\u22123) is similar to Earth's, suggesting a composition of rock and iron.", "date": "2013-11-21", "date_type": "published", "publication": "Nature", "volume": "503", "number": "7476", "publisher": "Nature Publishing Group", "pagerange": "381-384", "id_number": "CaltechAUTHORS:20170621-152543226", "issn": "0028-0836", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20170621-152543226", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNX12AJ23G" } ] }, "doi": "10.1038/nature12767", "primary_object": { "basename": "1310.7988.pdf", "url": "https://authors.library.caltech.edu/records/vx9f6-vde31/files/1310.7988.pdf" }, "related_objects": [ { "basename": "nature12767-s1.pdf", "url": "https://authors.library.caltech.edu/records/vx9f6-vde31/files/nature12767-s1.pdf" } ], "resource_type": "article", "pub_year": "2013", "author_list": "Howard, Andrew W.; Sanchis-Ojeda, Roberto; et el." }, { "id": "https://authors.library.caltech.edu/records/1k4qd-2dc58", "eprint_id": 42774, "eprint_status": "archive", "datestamp": "2023-08-22 10:52:13", "lastmod": "2023-10-25 23:00:36", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Tan-Xianyu", "name": { "family": "Tan", "given": "Xianyu" } }, { "id": "Payne-M-J", "name": { "family": "Payne", "given": "Matthew J." }, "orcid": "0000-0001-5133-6303" }, { "id": "Lee-Man-Hoi", "name": { "family": "Lee", "given": "Man Hoi" } }, { "id": "Ford-E-B", "name": { "family": "Ford", "given": "Eric B." }, "orcid": "0000-0001-6545-639X" }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "Andrew W." }, "orcid": "0000-0001-8638-0320" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John A." }, "orcid": "0000-0001-9808-7172" }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "Geoff W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Wright-J-T", "name": { "family": "Wright", "given": "Jason T." }, "orcid": "0000-0001-6160-5888" } ] }, "title": "Characterizing the Orbital and Dynamical State of the HD 82943 Planetary System with Keck Radial Velocity Data", "ispublished": "pub", "full_text_status": "public", "keywords": "celestial mechanics; planetary systems; stars: individual (HD 82943)", "note": "\u00a9 2013 American Astronomical Society. Received 2013 May 27; accepted 2013 September 3; published 2013 October 18. \n\nBased on observations obtained at the W. M. Keck Observatory, which is\noperated jointly by the University of California and the California Institute of\nTechnology.\n\nWe thank NASA and NExScI for providing Keck time in the\n2011A semester for the study of multiplanet systems (NExScI\nID40/Keck ID# N141Hr). Data presented herein were obtained\nat the W.M. Keck Observatory from telescope time allocated to the National Aeronautics and Space Administration through the agency's scientific partnership with the California Institute of Technology and the University of California. The Observatory was made possible by the generous financial support of the W. M. Keck Foundation. We thank Howard Isaacson, R.P. Butler, and S. Vogt for help with observing at the telescope, and the referee for helpful comments on the manuscript. X.T. and M.H.L. were supported in part by the Hong Kong RGC grant HKU 7034/09P. Contributions by M.J.P. and E.B.F. were supported by NASA Origins of Solar Systems grant NNX09AB35G prior to 2011 August 8. J.A.J. was supported by generous grants from the David and Lucile Packard Foundation and the Alfred P. Sloan Foundation. J.T.W. was supported by NSF Astronomy and Astrophysics grant AST-1211441. The Center for Exoplanets and Habitable Worlds is supported by the Pennsylvania State University, the Eberly College of Science, and the Pennsylvania Space Grant Consortium. M.H.L. and E.B.F. also acknowledge the hospitality of the Isaac Newton Institute for Mathematical Sciences, where part of this work was completed.\n\nPublished - 0004-637X_777_2_101.pdf
Submitted - 1306.0687v2.pdf
", "abstract": "We present an updated analysis of radial velocity data of the HD 82943 planetary system based on 10 yr of measurements obtained with the Keck telescope. Previous studies have shown that the HD 82943 system has two planets that are likely in 2:1 mean-motion resonance (MMR), with orbital periods about 220 and 440 days. However, alternative fits that are qualitatively different have also been suggested, with two planets in a 1:1 resonance or three planets in a Laplace 4:2:1 resonance. Here we use \u03c7^2 minimization combined with a parameter grid search to investigate the orbital parameters and dynamical states of the qualitatively different types of fits, and we compare the results to those obtained with the differential evolution Markov chain Monte Carlo method. Our results support the coplanar 2:1 MMR configuration for the HD 82943 system, and show no evidence for either the 1:1 or three-planet Laplace resonance fits. The inclination of the system with respect to the sky plane is well constrained at 20^(+4.9)_(-5.5) degrees, and the system contains two planets with masses of about 4.78 M_J and 4.80 M_J (where M_J is the mass of Jupiter) and orbital periods of about 219 and 442 days for the inner and outer planet, respectively. The best fit is dynamically stable with both eccentricity-type resonant angles \u03b8_1 and \u03b8_2 librating around 0\u00b0.", "date": "2013-11-10", "date_type": "published", "publication": "Astrophysical Journal", "volume": "777", "number": "2", "publisher": "American Astronomical Society", "pagerange": "Art. No. 101", "id_number": "CaltechAUTHORS:20131202-130412810", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20131202-130412810", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "W. M. Keck Foundation" }, { "agency": "Research Grants Council of Hong Kong", "grant_number": "HKU 7034/09P" }, { "agency": "NASA", "grant_number": "NNX09AB35G" }, { "agency": "David and Lucile Packard Foundation" }, { "agency": "Alfred P. Sloan Foundation" }, { "agency": "NSF", "grant_number": "AST-1211441" }, { "agency": "Pennsylvania State University" }, { "agency": "Eberly College of Science" }, { "agency": "Pennsylvania Space Grant Consortium" } ] }, "doi": "10.1088/0004-637X/777/2/101", "primary_object": { "basename": "0004-637X_777_2_101.pdf", "url": "https://authors.library.caltech.edu/records/1k4qd-2dc58/files/0004-637X_777_2_101.pdf" }, "related_objects": [ { "basename": "1306.0687v2.pdf", "url": "https://authors.library.caltech.edu/records/1k4qd-2dc58/files/1306.0687v2.pdf" } ], "resource_type": "article", "pub_year": "2013", "author_list": "Tan, Xianyu; Payne, Matthew J.; et el." }, { "id": "https://authors.library.caltech.edu/records/5jky7-ct589", "eprint_id": 42357, "eprint_status": "archive", "datestamp": "2023-08-19 21:57:14", "lastmod": "2023-10-25 15:52:09", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Huber-Daniel", "name": { "family": "Huber", "given": "Daniel" }, "orcid": "0000-0001-8832-4488" }, { "id": "Montet-B-T", "name": { "family": "Montet", "given": "Benjamin T." }, "orcid": "0000-0001-7516-8308" }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "Andrew W." }, "orcid": "0000-0001-8638-0320" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" } ] }, "title": "Stellar Spin-Orbit Misalignment in a Multiplanet System", "ispublished": "pub", "full_text_status": "public", "note": "\u00a9 2013 American Association for the Advancement of Science.\n\nReceived for publication 18 June 2013; Accepted for publication 4 September 2013.\n\nWe gratefully acknowledge the entire Kepler team for making this paper possible. Funding for the Kepler Mission is provided by NASA's Science Mission Directorate. We thank E. Agol and D. Raggozine for helpful comments on the manuscript. Supported by an appointment to the NASA Postdoctoral Program at Ames Research Center, administered by Oak Ridge Associated Universities through a contract with NASA (D.H.); a NSF Graduate Research Fellowship (K.M.D.); a NSF Graduate Research Fellowship under grant DGE1144469 (B.T.M.); the Netherlands Organisation for Scientific Research (S.H.); BELSPO for contract PRODEX\nCOROT ( J.M.); the NASA Kepler Participating Scientist\nprogram (R.S.-O., J.N.W., and E.B.F.); NSF grant AST-1105930\n(S.B.); and the David and Lucile Packard and Alfred\nP. Sloan foundations (J.A.J.). J.A.C. is a Hubble Fellow of the Harvard-Smithsonian Center for Astrophysics. Funding for the Stellar Astrophysics Centre is provided by Danish National Research Foundation grant DNRF106. The research is\nsupported by the ASTERISK (Asteroseismic Investigations\nwith SONG and Kepler) project funded by the European\nResearch Council (grant agreement 267864).\n\nSubmitted - 1310.4503v2.pdf
", "abstract": "Stars hosting hot Jupiters are often observed to have high obliquities, whereas stars with multiple coplanar planets have been seen to have low obliquities. This has been interpreted as evidence that hot-Jupiter formation is linked to dynamical disruption, as opposed to planet migration through a protoplanetary disk. We used asteroseismology to measure a large obliquity for Kepler-56, a red giant star hosting two transiting coplanar planets. These observations show that spin-orbit misalignments are not confined to hot-Jupiter systems. Misalignments in a broader class of systems had been predicted as a consequence of torques from wide-orbiting companions, and indeed radial velocity measurements revealed a third companion in a wide orbit in the Kepler-56 system.", "date": "2013-10-18", "date_type": "published", "publication": "Science", "volume": "342", "number": "6156", "publisher": "American Association for the Advancement of Science", "pagerange": "331-334", "id_number": "CaltechAUTHORS:20131111-140945270", "issn": "0036-8075", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20131111-140945270", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA Postdoctoral Program" }, { "agency": "NSF Graduate Research Fellowship", "grant_number": "DGE-1144469" }, { "agency": "Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO)" }, { "agency": "Belgian Federal Science Policy Office (BELSPO)" }, { "agency": "NSF", "grant_number": "AST-1105930" }, { "agency": "David and Lucile Packard Foundation" }, { "agency": "Alfred P. Sloan Foundation" }, { "agency": "Danish National Research Foundation", "grant_number": "DNRF106" }, { "agency": "European Research Council (ERC)", "grant_number": "267864 ASTERISK" } ] }, "doi": "10.1126/science.1242066", "primary_object": { "basename": "1310.4503v2.pdf", "url": "https://authors.library.caltech.edu/records/5jky7-ct589/files/1310.4503v2.pdf" }, "resource_type": "article", "pub_year": "2013", "author_list": "Huber, Daniel; Montet, Benjamin T.; et el." }, { "id": "https://authors.library.caltech.edu/records/h47h4-ts490", "eprint_id": 42057, "eprint_status": "archive", "datestamp": "2023-08-22 10:23:01", "lastmod": "2023-10-25 15:04:11", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Sanchis-Ojeda-R", "name": { "family": "Sanchis-Ojeda", "given": "Roberto" }, "orcid": "0000-0002-6193-972X" }, { "id": "Winn-J-N", "name": { "family": "Winn", "given": "Joshua N." }, "orcid": "0000-0002-4265-047X" }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "Geoffrey W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "Andrew W." }, "orcid": "0000-0001-8638-0320" }, { "id": "Isaacson-H-T", "name": { "family": "Isaacson", "given": "Howard T." }, "orcid": "0000-0002-0531-1073" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" }, { "id": "Torres-G", "name": { "family": "Torres", "given": "Guillermo" }, "orcid": "0000-0002-5286-0251" }, { "id": "Albrecht-S", "name": { "family": "Albrecht", "given": "Simon" } }, { "id": "Campante-T-L", "name": { "family": "Campante", "given": "Tiago L." }, "orcid": "0000-0002-4588-5389" }, { "id": "Chaplin-W-J", "name": { "family": "Chaplin", "given": "William J." }, "orcid": "0000-0002-5714-8618" }, { "id": "Davies-G-R", "name": { "family": "Davies", "given": "Guy R." }, "orcid": "0000-0002-4290-7351" }, { "id": "Lund-M-N", "name": { "family": "Lund", "given": "Mikkel N." } }, { "id": "Carter-J-A", "name": { "family": "Carter", "given": "Joshua A." } }, { "id": "Dawson-R-I", "name": { "family": "Dawson", "given": "Rebekah I." }, "orcid": "0000-0001-9677-1296" }, { "id": "Buchhave-L-A", "name": { "family": "Buchhave", "given": "Lars A." }, "orcid": "0000-0003-1605-5666" }, { "id": "Everett-M-E", "name": { "family": "Everett", "given": "Mark E." }, "orcid": "0000-0002-0885-7215" }, { "id": "Fischer-D-A", "name": { "family": "Fischer", "given": "Debra A." }, "orcid": "0000-0003-2221-0861" }, { "id": "Geary-J-C", "name": { "family": "Geary", "given": "John C." } }, { "id": "Gilliland-R-L", "name": { "family": "Gilliland", "given": "Ronald L." }, "orcid": "0000-0002-1554-5578" }, { "id": "Horch-E-P", "name": { "family": "Horch", "given": "Elliott P." }, "orcid": "0000-0003-2159-1463" }, { "id": "Howell-S-B", "name": { "family": "Howell", "given": "Steve B." }, "orcid": "0000-0002-2532-2853" }, { "id": "Latham-D-W", "name": { "family": "Latham", "given": "David W." }, "orcid": "0000-0001-9911-7388" } ] }, "title": "Kepler-63b: A Giant Planet in a Polar Orbit around a Young Sun-like Star", "ispublished": "pub", "full_text_status": "public", "keywords": "planetary systems; stars: activity; stars: individual (Kepler-63); stars: rotation; starspots", "note": "\u00a9 2013 American Astronomical Society. \n\nReceived 2013 March 23; accepted 2013 August 4; published 2013 September 4. \n\nWe thank the anonymous referee for numerous insightful\nsuggestions that led to major improvements in this paper.\nWe also thank Andrew Collier Cameron, Bryce Croll, and\nBenjamin Brown for helpful discussions, and the entire Kepler team for the success of the mission. R.S.O. and J.N.W. acknowledge NASA support through the Kepler Participating Scientist program. Kepler was competitively selected as the tenth Discovery mission. Funding for this mission was provided by NASA's Science Mission Directorate. The data presented in this article were obtained from the Mikulski Archive for Space Telescopes (MAST). STScI is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS5-26555. Support for MAST for non-HST data is provided by the NASA Office of Space Science via grant NNX09AF08G and by other grants and contracts. J.A.C. acknowledges support by NASA through a Hubble Fellowship (grant HF-51267.01-A). R.I.D. is supported by the NSF-GRFP (DGE-1144152). J.A.J.\nis supported by generous grants from the Alfred P. Sloan Foundation and the David and Lucile Packard Foundation. T.L.C., W.J.C., and G.R.D. acknowledge the support of the UK Science and Technology Facilities Council (STFC). Funding for the Stellar Astrophysics Centre is provided by The Danish National Research Foundation (grant agreement DNRF106). This research was partly supported by the ASTERISK project (ASTERoseismic Investigations with SONG and Kepler) funded by the European Research Council (grant agreement No. 267864). G.T. acknowledges partial support for this work from NSF grant AST-1007992.\n\nPublished - 0004-637X_775_1_54.pdf
Submitted - 1307.8128v2.pdf
", "abstract": "We present the discovery and characterization of a giant planet orbiting the young Sun-like star Kepler-63 (KOI-63, m_(Kp) = 11.6, T_(eff) = 5576 K, M_\u2605 = 0.98 M_\u2609). The planet transits every 9.43 days, with apparent depth variations and brightening anomalies caused by large starspots. The planet's radius is 6.1 \u00b1 0.2 R_\u2295, based on the transit light curve and the estimated stellar parameters. The planet's mass could not be measured with the existing radial-velocity data, due to the high level of stellar activity, but if we assume a circular orbit, then we can place a rough upper bound of 120 M_\u2295 (3\u03c3). The host star has a high obliquity (\u03c8 = 104\u00b0), based on the Rossiter-McLaughlin effect and an analysis of starspot-crossing events. This result is valuable because almost all previous obliquity measurements are for stars with more massive planets and shorter-period orbits. In addition, the polar orbit of the planet combined with an analysis of spot-crossing events reveals a large and persistent polar starspot. Such spots have previously been inferred using Doppler tomography, and predicted in simulations of magnetic activity of young Sun-like stars.", "date": "2013-09-20", "date_type": "published", "publication": "Astrophysical Journal", "volume": "775", "number": "1", "publisher": "American Astronomical Society", "pagerange": "Art. No. 54", "id_number": "CaltechAUTHORS:20131024-153909803", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20131024-153909803", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS 5-26555" }, { "agency": "NASA", "grant_number": "NNX09AF08G" }, { "agency": "NASA Hubble Fellowship", "grant_number": "HF-51267.01-A" }, { "agency": "NSF Graduate Research Fellowship", "grant_number": "DGE-1144152" }, { "agency": "Alfred P. Sloan Foundation" }, { "agency": "David and Lucile Packard Foundation" }, { "agency": "Science and Technology Facilities Council (STFC)" }, { "agency": "Danish National Research Foundation", "grant_number": "DNRF106" }, { "agency": "European Research Council (ERC)", "grant_number": "267864 ASTERISK" }, { "agency": "NSF", "grant_number": "AST-1007992" } ] }, "doi": "10.1088/0004-637X/775/1/54", "primary_object": { "basename": "0004-637X_775_1_54.pdf", "url": "https://authors.library.caltech.edu/records/h47h4-ts490/files/0004-637X_775_1_54.pdf" }, "related_objects": [ { "basename": "1307.8128v2.pdf", "url": "https://authors.library.caltech.edu/records/h47h4-ts490/files/1307.8128v2.pdf" } ], "resource_type": "article", "pub_year": "2013", "author_list": "Sanchis-Ojeda, Roberto; Winn, Joshua N.; et el." }, { "id": "https://authors.library.caltech.edu/records/53gv1-rem61", "eprint_id": 41495, "eprint_status": "archive", "datestamp": "2023-08-22 10:17:21", "lastmod": "2023-10-24 23:47:18", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Crepp-J-R", "name": { "family": "Crepp", "given": "Justin R." }, "orcid": "0000-0003-0800-0593" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "Andrew W." }, "orcid": "0000-0001-8638-0320" }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "Geoffrey W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Gianninas-A", "name": { "family": "Gianninas", "given": "Alexandros" } }, { "id": "Kilic-M", "name": { "family": "Kilic", "given": "Mukremin" } }, { "id": "Wright-J-T", "name": { "family": "Wright", "given": "Jason T." }, "orcid": "0000-0001-6160-5888" } ] }, "title": "The TRENDS High-Contrast Imaging Survey. III. A Faint White Dwarf Companion Orbiting HD 114174", "ispublished": "pub", "full_text_status": "public", "keywords": "astrometry; stars: individual (HD 114174); techniques: high angular resolution; techniques: radial velocities; white dwarfs", "note": "\u00a9 2013 American Astronomical Society. Received 2013 May 2; accepted 2013 June 24; published 2013 August 7. We thank Sasha Hinkley for trading NIRC2 observing time that allowed us to acquire observations of HD 114174 B in a complementary bandpass, demonstrating its unusual colors,\nand Mike Liu for pointing out reference to the Gliese 86 system which shares a similar story as HD 114174 B for being a white dwarf initially characterized as a brown dwarf. The referee, John Subasavage, provided helpful comments that improved the clarity of our manuscript. This research has made use of the SIMBAD database, operated at CDS, Strasbourg, France. The TRENDS high-contrast imaging program is supported by NASA Origins grant NNX13AB03G. J.A.J. is supported by generous grants from the David and Lucile Packard Foundation and the Alfred P. Sloan Foundation. Data presented herein were obtained at the W. M. Keck Observatory, which is operated as a scientific partnership among the California Institute of Technology, the University of California and the National Aeronautics and Space Administration. The Observatory was made possible by the generous financial support of the W. M. Keck Foundation. The Center for Exoplanets and Habitable Worlds is supported by the Pennsylvania State University, the Eberly College of Science, and the Pennsylvania Space Grant Consortium.\n\nPublished - 0004-637X_774_1_1.pdf
Submitted - 1305.0571v2.pdf
", "abstract": "The nearby Sun-like star HD 114174 exhibits a strong and persistent Doppler acceleration indicating the presence of an unseen distant companion. We have acquired high-contrast imaging observations of this star using NIRC2 at Keck and report the direct detection of the body responsible for causing the \"trend.\" HD 114174 B has a projected separation of 692 \u00b1 9 mas (18.1 AU) and is 10.75 \u00b1 0.12 mag (contrast of 5 \u00d7 10^(\u20135)) fainter than its host in the K-band, requiring aggressive point-spread function subtraction to identify. Our astrometric time baseline of 1.4 yr demonstrates physical association through common proper motion. We find that the companion has absolute magnitude, M_J = 13.97 \u00b1 0.11, and colors, J \u2013 K = 0.12 \u00b1 0.16 mag. These characteristics are consistent with an \u2248T3 dwarf, initially leading us to believe that HD 114174 B was a substellar object. However, a dynamical analysis that combines radial velocity measurements with available imaging data indicates a minimum mass of 0.260 \u00b1 0.010 M_\u2609. We conclude that HD 114174 B must be a white dwarf. Assuming a hydrogen-rich composition, atmospheric and evolutionary model fits yield an effective temperature T_(eff) = 8200 \u00b1 4000 K, surface gravity log g = 8.90 \u00b1 0.02, and cooling age of t_c \u2248 3.4 Gyr, which is consistent with the 4.7^(+2.3)_(-2.6) Gyr host star isochronal age estimate. HD 114174 B is a benchmark object located only 26.14 \u00b1 0.37 pc from the Sun. It may be studied at a level of detail comparable to Sirius and Procyon, and used to understand the link between the mass of white dwarf remnants with that of their progenitors.", "date": "2013-09-01", "date_type": "published", "publication": "Astrophysical Journal", "volume": "774", "number": "1", "publisher": "American Astronomical Society", "pagerange": "Art. No. 1", "id_number": "CaltechAUTHORS:20130924-095847561", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20130924-095847561", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNX13AB03G" }, { "agency": "David and Lucile Packard Foundation" }, { "agency": "Alfred P. Sloan Foundation" }, { "agency": "W. M. Keck Foundation" }, { "agency": "Pennsylvania State University" }, { "agency": "Eberly College of Science" }, { "agency": "Pennsylvania Space Grant Consortium" } ] }, "doi": "10.1088/0004-637X/774/1/1", "primary_object": { "basename": "0004-637X_774_1_1.pdf", "url": "https://authors.library.caltech.edu/records/53gv1-rem61/files/0004-637X_774_1_1.pdf" }, "related_objects": [ { "basename": "1305.0571v2.pdf", "url": "https://authors.library.caltech.edu/records/53gv1-rem61/files/1305.0571v2.pdf" } ], "resource_type": "article", "pub_year": "2013", "author_list": "Crepp, Justin R.; Johnson, John Asher; et el." }, { "id": "https://authors.library.caltech.edu/records/rb3x7-7w703", "eprint_id": 39494, "eprint_status": "archive", "datestamp": "2023-08-22 10:03:33", "lastmod": "2024-02-02 21:11:04", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Fulton-B-J", "name": { "family": "Fulton", "given": "Benjamin J." }, "orcid": "0000-0003-3504-5316" }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "Andrew W." }, "orcid": "0000-0001-8638-0320" }, { "id": "Winn-J-N", "name": { "family": "Winn", "given": "Joshua N." }, "orcid": "0000-0002-4265-047X" }, { "id": "Albrecht-S", "name": { "family": "Albrecht", "given": "Simon" } }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "Geoffrey W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Crepp-J-R", "name": { "family": "Crepp", "given": "Justin R." }, "orcid": "0000-0003-0800-0593" }, { "id": "Bakos-G-\u00c1", "name": { "family": "Bakos", "given": "G\u00e1sp\u00e1r \u00c1." }, "orcid": "0000-0001-7204-6727" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" }, { "id": "Hartman-J-D", "name": { "family": "Hartman", "given": "Joel D." }, "orcid": "0000-0001-8732-6166" }, { "id": "Isaacson-H-T", "name": { "family": "Isaacson", "given": "Howard" }, "orcid": "0000-0002-0531-1073" }, { "id": "Knutson-H-A", "name": { "family": "Knutson", "given": "Heather A." }, "orcid": "0000-0002-5375-4725" }, { "id": "Zhao-Ming", "name": { "family": "Zhao", "given": "Ming" }, "orcid": "0000-0002-4258-9517" } ] }, "title": "The Stellar Obliquity and the Long-period planet in the HAT-P-17 Exoplanetary System", "ispublished": "pub", "full_text_status": "public", "keywords": "planets and satellites: fundamental parameters \u2013 planets and satellites: individual\n(HAT-P-17b) \u2013 techniques: high angular resolution \u2013 techniques: radial velocities", "note": "\u00a9 2013 The American Astronomical Society. \n\nReceived 2013 January 25; accepted 2013 May 24; published 2013 July 9. \n\nWe thank the referee for a prompt response, careful reading,\nand useful comments, Jason Eastman for providing the\nEXOFAST code to community, and the many observers who\ncontributed to the measurements reported here. We gratefully\nacknowledge the efforts and dedication of the Keck Observatory\nstaff, especially Scott Dahm, Greg Doppman, Hien Tran, and\nGrant Hill for support of HIRES and Greg Wirth for support of\nremote observing. Finally, we extend special thanks to those of\nHawaiian ancestry on whose sacred mountain of Mauna Kea we\nare privileged to be guests. Without their generous hospitality,\nthe Keck observations presented herein would not have been\npossible. \n\nFacilities: Keck:I (HIRES), Keck:II (NIRC2)\n\nPublished - 0004-637X_772_2_80.pdf
Submitted - 1301.6289v1.pdf
", "abstract": "We present the measured projected obliquity \u2013 the sky-projected angle between the stellar spin\naxis and orbital angular momentum \u2013 of the inner planet of the HAT-P-17 multi-planet system. We\nmeasure the sky-projected obliquity of the star to be \u03bb = 19^(+14)_(\n\u221216) degrees by modeling the Rossiter-\nMcLaughlin (RM) effect in Keck/HIRES radial velocities (RVs). The anomalous RV time series\nshows an asymmetry relative to the midtransit time, ordinarily suggesting a nonzero obliquity \u2013 but in this case at least part of the asymmetry may be due to the convective blueshift, increasing\nthe uncertainty in the determination of \u03bb. We employ the semi-analytical approach of Hirano et al.\n(2011) that includes the effects of macroturbulence, instrumental broadening, and convective blueshift\nto accurately model the anomaly in the net RV caused by the planet eclipsing part of the rotating\nstar. Obliquity measurements are an important tool for testing theories of planet formation and\nmigration. To date, the measured obliquities of \u223c50 Jovian planets span the full range, from prograde\nto retrograde, with planets orbiting cool stars preferentially showing alignment of stellar spins and\nplanetary orbits. Our results are consistent with this pattern emerging from tidal interactions in the\nconvective envelopes of cool stars and close-in planets. In addition, our 1.8 years of new RVs for this\nsystem show that the orbit of the outer planet is more poorly constrained than previously thought,\nwith an orbital period now in the range of 10\u201336 years.", "date": "2013-08-01", "date_type": "published", "publication": "Astrophysical Journal", "volume": "772", "number": "2", "publisher": "American Astronomical Society", "pagerange": "Art. No. 80", "id_number": "CaltechAUTHORS:20130722-104229869", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20130722-104229869", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "local_group": { "items": [ { "id": "Division-of-Geological-and-Planetary-Sciences" } ] }, "doi": "10.1088/0004-637X/772/2/80", "primary_object": { "basename": "1301.6289v1.pdf", "url": "https://authors.library.caltech.edu/records/rb3x7-7w703/files/1301.6289v1.pdf" }, "related_objects": [ { "basename": "0004-637X_772_2_80.pdf", "url": "https://authors.library.caltech.edu/records/rb3x7-7w703/files/0004-637X_772_2_80.pdf" } ], "resource_type": "article", "pub_year": "2013", "author_list": "Fulton, Benjamin J.; Howard, Andrew W.; et el." }, { "id": "https://authors.library.caltech.edu/records/w78w8-bfn27", "eprint_id": 40728, "eprint_status": "archive", "datestamp": "2023-08-22 09:49:53", "lastmod": "2023-10-24 17:21:18", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Albrecht-S", "name": { "family": "Albrecht", "given": "Simon" } }, { "id": "Winn-J-N", "name": { "family": "Winn", "given": "Joshua N." }, "orcid": "0000-0002-4265-047X" }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "Geoffrey W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "Andrew W." }, "orcid": "0000-0001-8638-0320" }, { "id": "Isaacson-H-T", "name": { "family": "Isaacson", "given": "Howard" }, "orcid": "0000-0002-0531-1073" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John A." }, "orcid": "0000-0001-9808-7172" } ] }, "title": "Low Stellar Obliquities in Compact Multiplanet Systems", "ispublished": "pub", "full_text_status": "public", "keywords": "planetary systems; planets and satellites: formation; planet\u2013star interactions; stars: individual (Kepler-25, KOI-94); stars: rotation; techniques: spectroscopic", "note": "\u00a9 2013 American Astronomical Society. \n\nReceived 2013 February 18; accepted 2013 May 12; published 2013 June 10.\n\nThe authors warmly thank Guillaume H\u00e9brard for supporting\nthe observing campaign of KOI-94. The authors are grateful to Bill Cochran, Debra Fischer, and Amaury Triaud for helpful discussions, to Lauren Weiss for sharing an early version of her group's manuscript about KOI-94, John Brewer for pointing out an error in an earlier version of this manuscript, and the Kepler team for creating an extraordinary tool for discovery. Particular thanks are due to the Kepler follow-up observing program for organizing the characterization of the host stars. Work by S.A., J.N.W., and J.A.J. was supported by NASA Origins award NNX09AB33G, and the work by S.A. and J.N.W. was supported by NSF grant No. 1108595. This research has made use of the following web resources: simbad.u-strasbg.fr, adswww.harvard.edu, arxiv.org. The W. M. Keck Observatory\nis operated as a scientific partnership among the\nCalifornia Institute of Technology, the University of California, and the National Aeronautics and Space Administration, and was made possible by the generous financial support of the W. M. Keck Foundation. We extend special thanks to those of Hawaiian ancestry on whose sacred mountain of Mauna Kea we are privileged to be guests.\nThe data presented herein were collected with the Keck I telescope at the W. M. Keck Observatory, which is operated as a scientific partnership among the California Institute of Technology, the University of California, and the National Aeronautics and Space Administration.\n\nPublished - 0004-637X_771_1_11.pdf
Submitted - 1302.4443v2.pdf
", "abstract": "We measure the sky-projected stellar obliquities (\u03bb) in the multiple-transiting planetary systems KOI-94 and Kepler-25, using the Rossiter-McLaughlin effect. In both cases, the host stars are well aligned with the orbital planes of the planets. For KOI-94 we find \u03bb = \u201311\u00b0 \u00b1 11\u00b0, confirming a recent result by Hirano and coworkers. Kepler-25 was a more challenging case, because the transit depth is unusually small (0.13%). To obtain the obliquity, it was necessary to use prior knowledge of the star's projected rotation rate and apply two different analysis methods to independent wavelength regions of the spectra. The two methods gave consistent results, \u03bb = 7\u00b0 \u00b1 8\u00b0 and \u20130\u00b0.5 \u00b1 5\u00b0.7. There are now a total of five obliquity measurements for host stars of systems of multiple-transiting planets, all of which are consistent with spin-orbit alignment. This alignment is unlikely to be the result of tidal interactions because of the relatively large orbital distances and low planetary masses in the systems. In this respect, the multiplanet host stars differ from hot-Jupiter host stars, which commonly have large spin-orbit misalignments whenever tidal interactions are weak. In particular, the weak-tide subset of hot-Jupiter hosts has obliquities consistent with an isotropic distribution (p = 0.6), but the multiplanet hosts are incompatible with such a distribution (p ~ 10^(\u20136)). This suggests that high obliquities are confined to hot-Jupiter systems, and provides further evidence that hot-Jupiter formation involves processes that tilt the planetary orbit.", "date": "2013-07-01", "date_type": "published", "publication": "Astrophysical Journal", "volume": "771", "number": "1", "publisher": "American Astronomical Society", "pagerange": "Art. No. 11", "id_number": "CaltechAUTHORS:20130820-091735328", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20130820-091735328", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNX09AB33G" }, { "agency": "NSF", "grant_number": "AST-1108595" }, { "agency": "W. M. Keck Foundation" } ] }, "doi": "10.1088/0004-637X/771/1/11", "primary_object": { "basename": "0004-637X_771_1_11.pdf", "url": "https://authors.library.caltech.edu/records/w78w8-bfn27/files/0004-637X_771_1_11.pdf" }, "related_objects": [ { "basename": "1302.4443v2.pdf", "url": "https://authors.library.caltech.edu/records/w78w8-bfn27/files/1302.4443v2.pdf" } ], "resource_type": "article", "pub_year": "2013", "author_list": "Albrecht, Simon; Winn, Joshua N.; et el." }, { "id": "https://authors.library.caltech.edu/records/32kfr-fw968", "eprint_id": 39947, "eprint_status": "archive", "datestamp": "2023-08-22 09:49:27", "lastmod": "2023-10-24 17:19:50", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Crepp-J-R", "name": { "family": "Crepp", "given": "Justin R." }, "orcid": "0000-0003-0800-0593" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "Andrew W." }, "orcid": "0000-0001-8638-0320" }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "Geoff W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Fischer-D-A", "name": { "family": "Fischer", "given": "Debra A." }, "orcid": "0000-0003-2221-0861" }, { "id": "Yantek-S-M", "name": { "family": "Yantek", "given": "Scott M." } }, { "id": "Wright-J-T", "name": { "family": "Wright", "given": "Jason T." }, "orcid": "0000-0001-6160-5888" }, { "id": "Isaacson-H-T", "name": { "family": "Isaacson", "given": "Howard" }, "orcid": "0000-0002-0531-1073" }, { "id": "Feng-Ying", "name": { "family": "Feng", "given": "Ying" } } ] }, "title": "The TRENDS High-contrast Imaging Survey. II. Direct Detection of the HD 8375 Tertiary", "ispublished": "pub", "full_text_status": "public", "keywords": "astrometry; brown dwarfs; methods: observational; stars: individual (HD 8375); stars: low-mass; techniques: high angular resolution; techniques: radial velocities", "note": "\u00a9 2013 American Astronomical Society.\n\nReceived 2012 October 27; accepted 2013 May 10; published 2013 June 14.\n\nThe TRENDS high-contrast science program is supported\nin part by NASA Origins grant NNX13AB03G. The data presented\nherein were obtained at the W. M. Keck Observatory,\nwhich is operated as a scientific partnership among the California Institute of Technology, the University of California and the National Aeronautics and Space Administration. The Observatory was made possible by the generous financial support of the W.M. Keck Foundation. The Center for Exoplanets and Habitable Worlds is supported by the Pennsylvania State University, the Eberly College of Science, and the Pennsylvania Space Grant Consortium\n\nPublished - 0004-637X_771_1_46.pdf
Submitted - 1210.7374v2.pdf
", "abstract": "We present the direct imaging detection of a faint tertiary companion to the single-lined spectroscopic binary HD 8375 AB. Initially noticed as an 53 m s^\u20131 yr^\u20131 Doppler acceleration by Bowler et al., we have obtained high-contrast adaptive optics observations at Keck using NIRC2 that spatially resolve HD 8375 C from its host(s). Astrometric measurements demonstrate that the companion shares a common proper-motion. We detect orbital motion in a clockwise direction. Multiband relative photometry measurements are consistent with an early M-dwarf spectral type (~M1V). Our combined Doppler and imaging observations place a lower-limit of m \u2265 0.297 M_\u2609 on its dynamical mass. We also provide a refined orbit for the inner pair using recent radial velocity measurements obtained with the High Resolution Echelle Spectrometer. HD 8375 is one of many triple-star systems that are apparently missing in the solar neighborhood.", "date": "2013-07-01", "date_type": "published", "publication": "Astrophysical Journal", "volume": "771", "number": "1", "publisher": "American Astronomical Society", "pagerange": "Art. No. 46", "id_number": "CaltechAUTHORS:20130815-101238890", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20130815-101238890", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNX13AB03G" }, { "agency": "W. M. Keck Foundation" } ] }, "doi": "10.1088/0004-637X/771/1/46", "primary_object": { "basename": "0004-637X_771_1_46.pdf", "url": "https://authors.library.caltech.edu/records/32kfr-fw968/files/0004-637X_771_1_46.pdf" }, "related_objects": [ { "basename": "1210.7374v2.pdf", "url": "https://authors.library.caltech.edu/records/32kfr-fw968/files/1210.7374v2.pdf" } ], "resource_type": "article", "pub_year": "2013", "author_list": "Crepp, Justin R.; Johnson, John Asher; et el." }, { "id": "https://authors.library.caltech.edu/records/z0wj5-xh434", "eprint_id": 39483, "eprint_status": "archive", "datestamp": "2023-08-19 20:08:20", "lastmod": "2023-10-24 16:50:55", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Bonsor-A", "name": { "family": "Bonsor", "given": "Amy" } }, { "id": "Kennedy-G-M", "name": { "family": "Kennedy", "given": "Grant M." }, "orcid": "0000-0001-6831-7547" }, { "id": "Crepp-J-R", "name": { "family": "Crepp", "given": "Justin R." }, "orcid": "0000-0003-0800-0593" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John A." } }, { "id": "Wyatt-M-C", "name": { "family": "Wyatt", "given": "Mark C." } }, { "id": "Sibthorpe-B", "name": { "family": "Sibthorpe", "given": "Bruce" } }, { "id": "Su-Katherine-Y-L", "name": { "family": "Su", "given": "Kate Y. L." }, "orcid": "0000-0002-3532-5580" } ] }, "title": "Spatially resolved images of dust belt(s) around the planet-hosting subgiant \u03ba CrB", "ispublished": "pub", "full_text_status": "public", "keywords": "techniques: high angular resolution \u2013 techniques: radial velocities \u2013 planets and\nsatellites: detection \u2013 planets and satellites: individual: \u03ba CrB \u2013 planet\u2013disc interactions \u2013\ninfrared: planetary systems", "note": "\u00a9 2013 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society.\n\nAccepted 2013 February 24. Received 2013 February 22; in original form 2012 December 20.\n\nFirst published online: April 8, 2013.\n\nWe thank the referee for comments that improved the quality of this\nmanuscript. We thank Steve Ertel and Jean-Charles Augereau for\nuseful discussions that benefitted this work. AB acknowledges the\nsupport of the ANR-2010 BLAN-0505-01 (EXOZODI). MCW and\nGMK are grateful for support from the European Union through\nERC grant number 279973.\n\nPublished - MNRAS-2013-Bonsor-3025-35.pdf
", "abstract": "We present Herschel spatially resolved images of the debris disc orbiting the subgiant \u03ba Coronae Borealis (\u03ba CrB). Not only are these the first resolved images of a debris disc orbiting a subgiant, but \u03ba CrB is a rare example of an intermediate mass star where a detailed study of the structure of the planetary system can be made, including both planets and planetesimal belt(s). The only way to discover planets using the radial velocity technique around such stars is to observe 'retired' A stars, which are cooler and slower rotators compared to their main-sequence counterparts. A planetary companion has already been detected orbiting the subgiant \u03ba CrB, with revised parameters of msin\u2009i = 2.1\u2009M_J and a_(pl) = 2.8 au (Johnson et al. 2008). We present additional Keck I HIRES (High Resolution Echelle Spectrometer) radial velocity measurements that provide evidence for a second planetary companion, alongside Keck II adaptive optics imaging that places an upper limit on the mass of this companion. Modelling of our Herschel images shows that the dust is broadly distributed, but cannot distinguish between a single wide belt (from 20 to 220 au) or two narrow dust belts (at around 40 and 165 au). Given the existence of a second planetary companion beyond \u223c3 au it is possible that the absence of dust within \u223c20 au is caused by dynamical depletion, although the observations are not inconsistent with depletion of these regions by collisional erosion, which occurs at higher rates closer to the star.", "date": "2013-06", "date_type": "published", "publication": "Monthly Notices of the Royal Astronomical Society", "volume": "431", "number": "4", "publisher": "Royal Astronomical Society", "pagerange": "3025-3035", "id_number": "CaltechAUTHORS:20130722-085406825", "issn": "0035-8711", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20130722-085406825", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "Agence Nationale pour la Recherche (ANR)", "grant_number": "ANR-2010 BLAN-0505-01" }, { "agency": "European Research Council (ERC)", "grant_number": "279973" } ] }, "local_group": { "items": [ { "id": "Infrared-Processing-and-Analysis-Center-(IPAC)" } ] }, "doi": "10.1093/mnras/stt367", "primary_object": { "basename": "MNRAS-2013-Bonsor-3025-35.pdf", "url": "https://authors.library.caltech.edu/records/z0wj5-xh434/files/MNRAS-2013-Bonsor-3025-35.pdf" }, "resource_type": "article", "pub_year": "2013", "author_list": "Bonsor, Amy; Kennedy, Grant M.; et el." }, { "id": "https://authors.library.caltech.edu/records/xhy15-c5y06", "eprint_id": 38754, "eprint_status": "archive", "datestamp": "2023-08-22 09:17:56", "lastmod": "2023-10-23 23:26:27", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Weiss-L-M", "name": { "family": "Weiss", "given": "Lauren M." }, "orcid": "0000-0002-3725-3058" }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "Geoffrey W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Rowe-J-F", "name": { "family": "Rowe", "given": "Jason F." }, "orcid": "0000-0002-5904-1865" }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "Andrew W." }, "orcid": "0000-0001-8638-0320" }, { "id": "Isaacson-H-T", "name": { "family": "Isaacson", "given": "Howard" }, "orcid": "0000-0002-0531-1073" }, { "id": "Fortney-J-J", "name": { "family": "Fortney", "given": "Jonathan J." }, "orcid": "0000-0002-9843-4354" }, { "id": "Miller-N", "name": { "family": "Miller", "given": "Neil" } }, { "id": "Demory-B-O", "name": { "family": "Demory", "given": "Brice-Olivier" }, "orcid": "0000-0002-9355-5165" }, { "id": "Fischer-D-A", "name": { "family": "Fischer", "given": "Debra A." }, "orcid": "0000-0003-2221-0861" }, { "id": "Adams-E-R", "name": { "family": "Adams", "given": "Elisabeth R." } }, { "id": "Dupres-A-K", "name": { "family": "Dupree", "given": "Andrea K." } }, { "id": "Howell-S-B", "name": { "family": "Howell", "given": "Steve B." }, "orcid": "0000-0002-2532-2853" }, { "id": "Kolbl-R", "name": { "family": "Kolbl", "given": "Rea" } }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" }, { "id": "Horch-E-P", "name": { "family": "Horch", "given": "Elliott P." }, "orcid": "0000-0003-2159-1463" }, { "id": "Everett-M-E", "name": { "family": "Everett", "given": "Mark E." }, "orcid": "0000-0002-0885-7215" }, { "id": "Fabrycky-D-C", "name": { "family": "Fabrycky", "given": "Daniel C." }, "orcid": "0000-0003-3750-0183" }, { "id": "Seager-S", "name": { "family": "Seager", "given": "Sara" }, "orcid": "0000-0002-6892-6948" } ] }, "title": "The Mass of KOI-94d and a Relation for Planet Radius, Mass, and Incident Flux", "ispublished": "pub", "full_text_status": "public", "keywords": "planets and satellites: composition; stars: individual (KOI-94, KIC 6462863, 2MASS J19491993+4153280); techniques: photometric; techniques: spectroscopic", "note": "\u00a9 2013 American Astronomical Society. Received 2012 October 31; accepted 2013 March 12; published 2013 April 9. \n\nBased in part on observations obtained at the W. M. Keck Observatory,\nwhich is operated by the University of California and the California Institute of\nTechnology.\n\nThis project was possible thanks to NASA's Kepler mission,\nwhich provided the photometry of KOI-94 and identified it as a target worthy of follow-up. The authors thank the Kepler Team as a whole, and also a few individuals for their specific roles: Bill Borucki and David Koch for designing the mission, and Natalie Batalha for leadership in the scientific analysis of the Kepler planetary candidates. L.M.W. thanks Yoram Lithwick for helpful conversations and assistance in interpreting the TTV data.\nL.M.W. is financially supported by the National Science\nFoundation Graduate Research Fellowship Program, Grant\nDGE 1106400. Spectra of KOI-94 were obtained at the W. M. Keck Observatory. The authors wish to extend special thanks to those of Hawai'ian ancestry on whose sacred mountain of Mauna Kea we are privileged to be guests. Without their generous hospitality, the Keck observations presented herein would not have been possible.\n\nPublished - 0004-637X_768_1_14.pdf
", "abstract": "We measure the mass of a modestly irradiated giant planet, KOI-94d. We wish to determine whether this planet, which is in a 22 day orbit and receives 2700 times as much incident flux as Jupiter, is as dense as Jupiter or rarefied like inflated hot Jupiters. KOI-94 also hosts at least three smaller transiting planets, all of which were detected by the Kepler mission. With 26 radial velocities of KOI-94 from the W. M. Keck Observatory and a simultaneous fit to the Kepler light curve, we measure the mass of the giant planet and determine that it is not inflated. Support for the planetary interpretation of the other three candidates comes from gravitational interactions through transit timing variations, the statistical robustness of multi-planet systems against false positives, and several lines of evidence that no other star resides within the photometric aperture. We report the properties of KOI-94b (M_P = 10.5 \u00b1 4.6 M_\u2295, R_P = 1.71 \u00b1 0.16 R_\u2295, P = 3.74 days), KOI-94c (M_P = 15.6^(+5.7)_(-15.6) M_\u2295, R_P = 4.32 \u00b1 0.41 R_\u2295, P = 10.4 days), KOI-94d (M_P = 106 \u00b1 11 M_\u2295, R_P = 11.27 \u00b1 1.06 R_\u2295, P = 22.3 days), and KOI-94e (M_P = 35^(+18)_(-28) M_\u2295, R_P = 6.56 \u00b1 0.62 R_\u2295, P = 54.3 days). The radial velocity analyses of KOI-94b and KOI-94e offer marginal (>2\u03c3) mass detections, whereas the observations of KOI-94c offer only an upper limit to its mass. Using the KOI-94 system and other planets with published values for both mass and radius (138 exoplanets total, including 35 with M_P < 150 M_\u2295), we establish two fundamental planes for exoplanets that relate their mass, incident flux, and radius from a few Earth masses up to 13 Jupiter masses: (R_P/R_\u2295) = 1.78(M_P/M_\u2295)0.53(F/erg s^(\u20131) cm^(\u20132))^(\u20130.03) for M_P < 150 M_\u2295, and R_P/R_\u2295 = 2.45(M_P/M_\u2295)^(\u20130.039)(F/erg s^(\u20131) cm^(\u20132))0.094 for M_P > 150 M_\u2295. These equations can be used to predict the radius or mass of a planet.", "date": "2013-05-01", "date_type": "published", "publication": "Astrophysical Journal", "volume": "768", "number": "1", "publisher": "American Astronomical Society", "pagerange": "Art. No. 14", "id_number": "CaltechAUTHORS:20130603-103612469", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20130603-103612469", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NSF Graduate Research Fellowship", "grant_number": "DGE-1106400" } ] }, "doi": "10.1088/0004-637X/768/1/14", "primary_object": { "basename": "0004-637X_768_1_14.pdf", "url": "https://authors.library.caltech.edu/records/xhy15-c5y06/files/0004-637X_768_1_14.pdf" }, "resource_type": "article", "pub_year": "2013", "author_list": "Weiss, Lauren M.; Marcy, Geoffrey W.; et el." }, { "id": "https://authors.library.caltech.edu/records/jvvaq-kqv84", "eprint_id": 38602, "eprint_status": "archive", "datestamp": "2023-08-22 09:11:45", "lastmod": "2023-10-23 22:35:34", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Curtis-J-L", "name": { "family": "Curtis", "given": "Jason L." }, "orcid": "0000-0002-2792-134X" }, { "id": "Wolfgang-A", "name": { "family": "Wolfgang", "given": "Angie" } }, { "id": "Wright-J-T", "name": { "family": "Wright", "given": "Jason T." }, "orcid": "0000-0001-6160-5888" }, { "id": "Brewer-J-M-Astro", "name": { "family": "Brewer", "given": "John M." }, "orcid": "0000-0002-9873-1471" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" } ] }, "title": "Ruprecht 147: The Oldest Nearby Open Cluster as a New Benchmark for Stellar Astrophysics", "ispublished": "pub", "full_text_status": "public", "keywords": "open clusters and associations: general; open clusters and associations: individual (Ruprecht 147)", "note": "\u00a9 2013 American Astronomical Society. Received 2012 May 26; accepted 2012 December 7; published 2013 April 4. J.L.C. acknowledges support from the National Science Foundation Graduate Research Fellowship Program supported by NSF grant No. DGE1255832, NSF grant No. AST-1211785 (PI: J.T.W.), the Stephen B. Brumbach graduate fellowship, and the Zaccheus Daniel travel grant program. A.W. acknowledges a Hunter R. Rawlings III Cornell Presidential Research Scholarship.\nJ.T.W. conceived of and oversaw the project, and collected\nall of the candidate stellar spectra. A.W. and J.T.W. conducted the radial velocity survey at Palomar and Lick and produced the preliminary R147 membership list. J.M.B. conducted the SME analysis. J.A.J. was PI on the program that obtained the optical photometry from CFHT/MegaCam, and also conducted preliminary SME analysis of Lick andKeck spectra to determine the composition of R147 (results are not reported in this work, though they informed this study). J.L.C. and J.T.W. performed the Hectochelle RV survey. J.L.C. was primarily responsible for the writing of the manuscript and the final analysis and synthesis of all data. We would like to thank Gabor F\u00fcur\u00e9sz and Andrew Szentgyorgyi for assisting the Hectochelle data reduction; Tim Naylor for assisting us with his \u03c4 2 code; Aaron Dotter for providing access to the Dartmouth isochrones with the CFHT/MegaCam filters; David Monet and Stephen Levine for providing the NOMAD catalog on HDD; James Graham and James Lloyd for supporting this research; Matthew Muterspaugh for sharing and swapping Lick 3 m time; and Kevin Covey for providing extensive comments on an early draft of this paper. We would also like to thank all observing staff and telescope operators at MMT/FLWO, CFHT, Lick, Palomar, and Keck; and Geoff Marcy, Andrew Howard and the California Planet Survey observing team for their assistance in acquiring the Keck spectra. We also appreciate the anonymous referee for offering thorough and constructive suggestions that improved this paper. Finally, we thank Debra Fischer, Jeff Valenti, Adam Kraus, Steve Saar,\nS\u00f8ren Meibom, Andrew West, Kevin Covey, Marcel Ag\u00fceros,\nSuzanne Hawley, Ivan King, Jay Anderson, Bob Mathieu, Ken\nJanes, and Eric Mamajek for helpful conversations, suggestions, and support. This work is based on observations obtained with Mega-Cam, a joint project of CFHT and CEA/DAPNIA, at the Canada\u2013France\u2013Hawaii Telescope (CFHT), which is operated by the National Research Council (NRC) of Canada, the Institute National des Sciences de l'Univers of the Centre National de la Recherche Scientifique of France, and the University of Hawaii. Observing timewas granted by theUniversity of Hawaii\nInstitute for Astronomy TAC. These data were reduced at the\nTERAPIX data center located at the Institut d'Astrophysique de Paris. Observations reported here were obtained at the MMT Observatory, a joint facility of the Smithsonian Institution and the University of Arizona. MMT telescope time was granted by NOAO (Project PA-10A-0378; PI: J.Wright), through the Telescope System Instrumentation Program (TSIP). TSIP is funded by NSF. This publication makes use of data products from the Two Micron All Sky Survey, which is a joint project of the University of Massachusetts and the Infrared Processing and Analysis\nCenter/California Institute of Technology, funded by NASA\nand the NSF. Some of the data presented herein were obtained at the W. M. Keck Observatory, which is operated as a scientific partnership among the California Institute of Technology, the University of California and the National Aeronautics and Space Administration. The Observatory was made possible by the generous financial support of the W. M. Keck Foundation. The authors wish to recognize and acknowledge the very significant cultural role and reverence that the summit of Mauna Kea has always had within the indigenous Hawaiian community. We are most fortunate to have the opportunity to conduct observations from this mountain. This research made use of Montage, funded by NASA's Earth Science Technology Office, Computation Technologies Project, under Cooperative Agreement Number NCC5-626 between NASA and the California Institute of Technology. Montage is maintained by the NASA/IPAC Infrared Science Archive. This research made use of the WEBDA database operated at the Institute for Astronomy of the University of Vienna, NASA's Astrophysics Data System Bibliographic Services, and the SIMBAD database and the VizieR catalog access tool operated at CDS, Strasbourg, France. The Center for Exoplanets and Habitable Worlds is Supported by The Pennsylvania State University, the Eberly College of Science, and the Pennsylvania Space Grant Consortium. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the authors and do not necessarily reflect the views of the National Science Foundation or any other institute cited above.\nFacilities: Shane, Hale, MMT, CFHT, Keck:I\n\nPublished - 1538-3881_145_5_134.pdf
", "abstract": "Ruprecht 147 is a hitherto unappreciated open cluster that holds great promise as a standard in fundamental stellar astrophysics. We have conducted a radial velocity survey of astrometric candidates with Lick, Palomar, and MMT observatories and have identified over 100 members, including 5 blue stragglers, 11 red giants, and 5 double-lined spectroscopic binaries (SB2s). We estimate the cluster metallicity from spectroscopic analysis, using Spectroscopy Made Easy (SME), and find it to be [M/H] = +0.07 \u00b1 0.03. We have obtained deep CFHT/MegaCam g'r'i'z' photometry and fit Padova isochrones to the (g' \u2013 i') and Two Micron All Sky Survey (J \u2013 K_S ) color-magnitude diagrams, using the \u03c4^2 maximum-likelihood procedure of Naylor, and an alternative method using two-dimensional cross-correlations developed in this work. We find best fits for Padova isochrones at age t = 2.5 \u00b1 0.25 Gyr, m \u2013 M = 7.35 \u00b1 0.1, and A_V = 0.25 \u00b1 0.05, with additional uncertainty from the unresolved binary population and possibility of differential extinction across this large cluster. The inferred age is heavily dependent on our choice of stellar evolution model: fitting Dartmouth and PARSEC models yield age parameters of 3 Gyr and 3.25 Gyr, respectively. At ~300 pc and ~3 Gyr, Ruprecht 147 is by far the oldest nearby star cluster.", "date": "2013-05", "date_type": "published", "publication": "Astronomical Journal", "volume": "145", "number": "5", "publisher": "American Astronomical Society", "pagerange": "Art. No. 134", "id_number": "CaltechAUTHORS:20130521-110015445", "issn": "0004-6256", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20130521-110015445", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NSF Graduate Research Fellowship", "grant_number": "DGE-1255832" }, { "agency": "NSF", "grant_number": "AST-1211785" }, { "agency": "Stephen B. Brumbach Graduate Fellowship" }, { "agency": "Hunter R. Rawlings III Cornell Presidential Research Scholarship" }, { "agency": "Zaccheus Daniel Travel Grant Program" }, { "agency": "W. M. Keck Foundation" }, { "agency": "NASA", "grant_number": "NCC5-626" }, { "agency": "Pennsylvania State University" }, { "agency": "Eberly College of Science" }, { "agency": "Pennsylvania Space Grant Consortium" }, { "agency": "National Optical Astronomy Observatory (NOAO)", "grant_number": "PA-10A-0378" } ] }, "doi": "10.1088/0004-6256/145/5/134", "primary_object": { "basename": "1538-3881_145_5_134.pdf", "url": "https://authors.library.caltech.edu/records/jvvaq-kqv84/files/1538-3881_145_5_134.pdf" }, "resource_type": "article", "pub_year": "2013", "author_list": "Curtis, Jason L.; Wolfgang, Angie; et el." }, { "id": "https://authors.library.caltech.edu/records/bf477-3xx66", "eprint_id": 38612, "eprint_status": "archive", "datestamp": "2023-08-22 09:09:03", "lastmod": "2023-10-23 22:36:01", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Muirhead-P-S", "name": { "family": "Muirhead", "given": "Philip S." }, "orcid": "0000-0002-0638-8822" }, { "id": "Shporer-A", "name": { "family": "Shporer", "given": "Avi" }, "orcid": "0000-0002-1836-3120" }, { "id": "Becker-J-C", "name": { "family": "Becker", "given": "Juliette" }, "orcid": "0000-0002-7733-4522" }, { "id": "Swift-J-J", "name": { "family": "Swift", "given": "Jonathan J." }, "orcid": "0000-0002-9486-818X" }, { "id": "Fuller-J", "name": { "family": "Fuller", "given": "Jim" }, "orcid": "0000-0002-4544-0750" }, { "id": "Hinkley-S", "name": { "family": "Hinkley", "given": "Sasha" }, "orcid": "0000-0001-8074-2562" }, { "id": "Pineda-J-S", "name": { "family": "Pineda", "given": "J. Sebastian" }, "orcid": "0000-0002-4489-0135" }, { "id": "Bottom-M", "name": { "family": "Bottom", "given": "Michael" }, "orcid": "0000-0003-1341-5531" }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "Andrew W." }, "orcid": "0000-0001-8638-0320" }, { "id": "von-Braun-K", "name": { "family": "von Braun", "given": "Kaspar" }, "orcid": "0000-0002-5823-4630" }, { "id": "Baranec-C", "name": { "family": "Baranec", "given": "Christoph" }, "orcid": "0000-0002-1917-9157" }, { "id": "Riddle-R-L", "name": { "family": "Riddle", "given": "Reed" }, "orcid": "0000-0002-0387-370X" }, { "id": "Tendulkar-S-P", "name": { "family": "Tendulkar", "given": "Shriharsh P." }, "orcid": "0000-0003-2548-2926" }, { "id": "Bui-Khanh", "name": { "family": "Bui", "given": "Khanh" } }, { "id": "Dekany-R-G", "name": { "family": "Dekany", "given": "Richard" } }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" } ] }, "title": "Characterizing the Cool KOIs. V. KOI-256: A Mutually Eclipsing Post-common Envelope Binary", "ispublished": "pub", "full_text_status": "public", "keywords": "binaries: eclipsing; binaries: spectroscopic; stars: abundances; stars: activity; stars: fundamental parameters; stars: individual (KOI-256); stars: late-type; stars: low-mass; stars: rotation", "note": "\u00a9 2013 American Astronomical Society. \n\nReceived 2013 January 2; accepted 2013 March 7; published 2013 April 2. \n\nWe would like to thank Eric Agol, Jean-Michel D\u00e9sert, Dong Lai, Dylan Morgan, Tony Piro and Andrew West for their insightful communications about this system. We would\nlike to thank the anonymous referee for the thoughtful and\nconstructive comments. We would like to thank the staff at\nPalomar Observatory for providing support during our many\nobservation runs, including Bruce Baker, Mike Doyle, Jamey\nEriksen, Carolyn Heffner, John Henning, Steven Kunsman,\nDan McKenna, Jean Mueller, Kajsa Peffer, Kevin Rykoski,\nand Greg van Idsinga. J. Becker would like to thank Mr. and\nMrs. Kenneth Adelman for providing funding for her 2012\nAlain Porter Memorial SURF Fellowship. A portion of this\nwork was supported by the National Science Foundation under\ngrant No. AST-1203023. The Robo-AO system is supported by collaborating partner institutions, the California Institute of Technology and the Inter-University Centre for Astronomy and Astrophysics, by the National Science Foundation under grant Nos. AST-0906060 and AST-0960343, by a grant from the Mt. Cuba Astronomical Foundation and by a gift from Samuel Oschin. This paper includes data collected by the Kepler mission. Funding for the Kepler mission is provided by the NASA Science Mission directorate. Some of the data presented in this paper were obtained from the Mikulski Archive for Space Telescopes (MAST). STScI is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS5-26555. Support for MAST for non-HST data is provided by the NASA Office of Space Science via grant NNX09AF08G and by other grants and contracts. Some of the data presented herein were obtained at the W.M. Keck Observatory, which is operated as a scientific partnership among the California Institute of Technology, the University of California and the National Aeronautics and Space Administration. The Observatory was made possible by the generous financial support of the W.M. Keck Foundation. The authors wish to recognize and acknowledge the very significant cultural role and reverence that the summit of Mauna Kea has within the indigenous Hawaiian community. \n\nFacilities: GALEX, Keck:I (HIRES), Keck:II (ESI), Kepler,\nPO:1.5m (Robo-AO), Hale (TripleSpec, WIRC)\n\nPublished - 0004-637X_767_2_111.pdf
", "abstract": "We report that Kepler Object of Interest 256 (KOI-256) is a mutually eclipsing post-common envelope binary (ePCEB), consisting of a cool white dwarf (M_\u2605 = 0.592 \u00b1 0.089 M_\u2609, R_\u2605 = 0.01345 \u00b1 0.00091 R_\u2609, T_(eff) = 7100 \u00b1 700 K) and an active M3 dwarf (M_\u2605 = 0.51 \u00b1 0.16 M_\u2609, R_\u2605 = 0.540 \u00b1 0.014 R_\u2609, T_(eff) = 3450 \u00b1 50 K) with an orbital period of 1.37865 \u00b1 0.00001 days. KOI-256 is listed as hosting a transiting planet-candidate by Borucki et al. and Batalha et al.; here we report that the planet-candidate transit signal is in fact the occultation of a white dwarf as it passes behind the M dwarf. We combine publicly-available long- and short-cadence Kepler light curves with ground-based measurements to robustly determine the system parameters. The occultation events are readily apparent in the Kepler light curve, as is spin-orbit synchronization of the M dwarf, and we detect the transit of the white dwarf in front of the M dwarf halfway between the occultation events. The size of the white dwarf with respect to the Einstein ring during transit (R_(Ein) = 0.00473 \u00b1 0.00055 R \u2609) causes the transit depth to be shallower than expected from pure geometry due to gravitational lensing. KOI-256 is an old, long-period ePCEB and serves as a benchmark object for studying the evolution of binary star systems as well as white dwarfs themselves, thanks largely to the availability of near-continuous, ultra-precise Kepler photometry.", "date": "2013-04-20", "date_type": "published", "publication": "Astrophysical Journal", "volume": "767", "number": "2", "publisher": "American Astronomical Society", "pagerange": "Art. No. 111", "id_number": "CaltechAUTHORS:20130521-132637224", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20130521-132637224", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "Alain Porter Memorial SURF Fellowship" }, { "agency": "NSF", "grant_number": "AST-1203023" }, { "agency": "Inter-University Centre for Astronomy and Astrophysics" }, { "agency": "NSF", "grant_number": "AST-0906060" }, { "agency": "NSF", "grant_number": "AST-0960343" }, { "agency": "Mt. Cuba Astronomical Foundation" }, { "agency": "Samuel Oschin" }, { "agency": "Caltech Summer Undergraduate Research Fellowship (SURF)" }, { "agency": "NASA", "grant_number": "NAS5-26555" }, { "agency": "NASA", "grant_number": "NNX09AF08G" }, { "agency": "W. M. Keck Foundation" } ] }, "doi": "10.1088/0004-637X/767/2/111", "primary_object": { "basename": "0004-637X_767_2_111.pdf", "url": "https://authors.library.caltech.edu/records/bf477-3xx66/files/0004-637X_767_2_111.pdf" }, "resource_type": "article", "pub_year": "2013", "author_list": "Muirhead, Philip S.; Shporer, Avi; et el." }, { "id": "https://authors.library.caltech.edu/records/g58dc-bat04", "eprint_id": 38263, "eprint_status": "archive", "datestamp": "2023-08-22 09:06:25", "lastmod": "2023-10-23 19:59:28", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Pineda-J-S", "name": { "family": "Pineda", "given": "J. Sebastian" }, "orcid": "0000-0002-4489-0135" }, { "id": "Bottom-M", "name": { "family": "Bottom", "given": "Michael" }, "orcid": "0000-0003-1341-5531" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John A." }, "orcid": "0000-0001-9808-7172" } ] }, "title": "Using High-resolution Optical Spectra to Measure Intrinsic Properties of Low-mass Stars: New Properties for KOI-314 and GJ 3470", "ispublished": "pub", "full_text_status": "public", "keywords": "brown dwarfs; stars: fundamental parameters; stars: low-mass", "note": "\u00a9 2013 American Astronomical Society. Received 2012 October 15; accepted 2013 February 21; published 2013 March 21. The authors would like to thank the California Planet Search\nteam for the use of the data, the Keck telescopes support staff for their assistance, and Philip Muirhead for his support in this endeavor. The authors would also like to thank the native Hawaiians for the use of their mountain in the advancement of science. The authors would also like to acknowledge the referee for providing useful comments that strengthened this work. J.S.P. was supported by a grant from the National Science Foundation Graduate Research Fellowship under grant No.(DGE-1144469). J.A.J. acknowledges support from the Sloan Foundation and the David & Lucile Packard Foundation. Based on data obtained from the ESO Science Archive Facility under request number(s): mbottom 48576, jspineda 49793, 49870, 49872, 49874-91, 49893-914, 49916-26. This publication makes use of data products from the Two Micron All Sky Survey, which is a joint project of the University of Massachusetts and the Infrared Processing and Analysis Center/California Institute of Technology, funded by the National Aeronautics and Space Administration and the National Science Foundation.\n\nPublished - 0004-637X_767_1_28.pdf
Submitted - 1302.6231v2.pdf
", "abstract": "We construct high signal-to-noise \"template\" spectra by co-adding hundreds of spectra of nearby dwarfs spanning K7 to M4, taken with Keck/HIRES as part of the California Planet Search. We identify several spectral regions in the visible (370-800 nm) that are sensitive to the stellar luminosity and metallicity. We use these regions to develop a spectral calibration method to measure the mass, metallicity, and distance of low-mass stars, without the requirement of geometric parallaxes. Testing our method on a sample of nearby M dwarfs, we show that we can reproduce stellar masses to about 8%-10%, metallicity to ~0.15 dex, and distance to 11%. We were able to make use of HIRES spectra obtained as part of the radial velocity monitoring of the star KOI-314 to derive a new mass estimate of 0.57 \u00b1 0.05 M_\u2609, a radius of 0.54 \u00b1 0.05 R_\u2609, a metallicity, [Fe/H], of \u20130.28 \u00b1 0.10, and a distance of 66.5 \u00b1 7.3 pc. Using HARPS archival data and combining our spectral method with constraints from transit observations, we are also able to derive the stellar properties of GJ 3470, a transiting planet hosting M dwarf. We estimate a mass of 0.53 \u00b1 0.05 M_\u2609, a radius of 0.50 \u00b1 0.05 R_\u2609, a metallicity, [Fe/H], of 0.12 \u00b1 0.12, and a distance of 29.9\u00b1_(3.4)^(3.7)pc.", "date": "2013-04-10", "date_type": "published", "publication": "Astrophysical Journal", "volume": "767", "number": "1", "publisher": "American Astronomical Society", "pagerange": "Art. No. 28", "id_number": "CaltechAUTHORS:20130503-111221127", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20130503-111221127", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NSF Graduate Research Fellowship", "grant_number": "DGE-1144469" }, { "agency": "Alfred P. Sloan Foundation" }, { "agency": "David and Lucile Packard Foundation" }, { "agency": "NASA" } ] }, "doi": "10.1088/0004-637X/767/1/28", "primary_object": { "basename": "0004-637X_767_1_28.pdf", "url": "https://authors.library.caltech.edu/records/g58dc-bat04/files/0004-637X_767_1_28.pdf" }, "related_objects": [ { "basename": "1302.6231v2.pdf", "url": "https://authors.library.caltech.edu/records/g58dc-bat04/files/1302.6231v2.pdf" } ], "resource_type": "article", "pub_year": "2013", "author_list": "Pineda, J. Sebastian; Bottom, Michael; et el." }, { "id": "https://authors.library.caltech.edu/records/qsa9y-0ah53", "eprint_id": 38255, "eprint_status": "archive", "datestamp": "2023-08-22 09:04:20", "lastmod": "2024-02-02 21:07:43", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Lewis-N-K", "name": { "family": "Lewis", "given": "Nikole K." }, "orcid": "0000-0002-8507-1304" }, { "id": "Knutson-H-A", "name": { "family": "Knutson", "given": "Heather A." }, "orcid": "0000-0002-5375-4725" }, { "id": "Showman-A-P", "name": { "family": "Showman", "given": "Adam P." } }, { "id": "Cowan-N-B", "name": { "family": "Cowan", "given": "Nicolas B." }, "orcid": "0000-0001-6129-5699" }, { "id": "Laughlin-G-P", "name": { "family": "Laughlin", "given": "Gregory" }, "orcid": "0000-0002-3253-2621" }, { "id": "Burrows-A-S", "name": { "family": "Burrows", "given": "Adam" }, "orcid": "0000-0002-3099-5024" }, { "id": "Deming-D", "name": { "family": "Deming", "given": "Drake" }, "orcid": "0000-0001-5727-4094" }, { "id": "Crepp-J-R", "name": { "family": "Crepp", "given": "Justin R." }, "orcid": "0000-0003-0800-0593" }, { "id": "Mighell-K-J", "name": { "family": "Mighell", "given": "Kenneth J." } }, { "id": "Agol-E", "name": { "family": "Agol", "given": "Eric" }, "orcid": "0000-0002-0802-9145" }, { "id": "Bakos-G-\u00c1", "name": { "family": "Bakos", "given": "G\u00e1sp\u00e1r \u00c1." }, "orcid": "0000-0001-7204-6727" }, { "id": "Charbonneau-D", "name": { "family": "Charbonneau", "given": "David" }, "orcid": "0000-0002-9003-484X" }, { "id": "D\u00e9sert-J-M", "name": { "family": "D\u00e9sert", "given": "Jean-Michel" }, "orcid": "0000-0002-0875-8401" }, { "id": "Fischer-D-A", "name": { "family": "Fischer", "given": "Debra A." }, "orcid": "0000-0003-2221-0861" }, { "id": "Fortney-J-J", "name": { "family": "Fortney", "given": "Jonathan J." }, "orcid": "0000-0002-9843-4354" }, { "id": "Hartman-J-D", "name": { "family": "Hartman", "given": "Joel D." }, "orcid": "0000-0001-8732-6166" }, { "id": "Hinkley-S", "name": { "family": "Hinkley", "given": "Sasha" }, "orcid": "0000-0001-8074-2562" }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "Andrew W." }, "orcid": "0000-0001-8638-0320" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" }, { "id": "Kao-Melodie-M", "name": { "family": "Kao", "given": "Melodie" }, "orcid": "0000-0001-5125-1414" }, { "id": "Langton-J", "name": { "family": "Langton", "given": "Jonathan" } }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "Geoffrey W." }, "orcid": "0000-0002-2909-0113" } ] }, "title": "Orbital Phase Variations of the Eccentric Giant Planet HAT-P-2b", "ispublished": "pub", "full_text_status": "public", "keywords": "atmospheric effects; methods: numerical; planets and satellites: general; planets and satellites: individual (HAT-P-2b); techniques: photometric", "note": "\u00a9 2013 American Astronomical Society. \n\nReceived 2012 October 18; accepted 2013 February 19; published 2013 March 13. \n\nThis work is based on observations made with the Spitzer Space Telescope, which is operated by the Jet Propulsion Laboratory, California Institute of Technology, under a contract with NASA. Support for this work was provided by JPL/Caltech. N.K.L. was further supported by NASA Headquarters under the NASA Earth and Space Science Fellowship Program (NNX08AX02H), Origins Program (NNX08AF27G), and in part under contract with the California Institute of Technology (Caltech) funded by NASA through the Sagan Fellowship Program executed by the NASA Exoplanet Science Institute. Some of the data presented herein were obtained at the W. M. Keck Observatory, which is operated as a scientific partnership among the California Institute of Technology, the University of California, and the National Aeronautics and Space Administration. The Observatory was made possible by the generous financial support of the W. M. Keck Foundation. N.K.L. wishes to thank B. K. Jackson and J. A. Carter for many useful discussions during the preparation of this manuscript and the anonymous referee for their helpful suggestions.\n\nPublished - 0004-637X_766_2_95.pdf
Accepted Version - 1302.5084.pdf
", "abstract": "We present the first secondary eclipse and phase curve observations for the highly eccentric hot Jupiter HAT-P-2b in the 3.6, 4.5, 5.8, and 8.0 \u03bcm bands of the Spitzer Space Telescope. The 3.6 and 4.5 \u03bcm data sets span an entire orbital period of HAT-P-2b (P = 5.6334729 d), making them the longest continuous phase curve observations obtained to date and the first full-orbit observations of a planet with an eccentricity exceeding 0.2. We present an improved non-parametric method for removing the intrapixel sensitivity variations in Spitzer data at 3.6 and 4.5 \u03bcm that robustly maps position-dependent flux variations. We find that the peak in planetary flux occurs at 4.39 \u00b1 0.28, 5.84 \u00b1 0.39, and 4.68 \u00b1 0.37 hr after periapse passage with corresponding maxima in the planet/star flux ratio of 0.1138% \u00b1 0.0089%, 0.1162% \u00b1 0.0080%, and 0.1888% \u00b1 0.0072% in the 3.6, 4.5, and 8.0 \u03bcm bands, respectively. Our measured secondary eclipse depths of 0.0996% \u00b1 0.0072%, 0.1031% \u00b1 0.0061%, 0.071%^(+0.029%)_(-0.013%), and 0.1392% \u00b1 0.0095% in the 3.6, 4.5, 5.8, and 8.0 \u03bcm bands, respectively, indicate that the planet cools significantly from its peak temperature before we measure the dayside flux during secondary eclipse. We compare our measured secondary eclipse depths to the predictions from a one-dimensional radiative transfer model, which suggests the possible presence of a transient day side inversion in HAT-P-2b's atmosphere near periapse. We also derive improved estimates for the system parameters, including its mass, radius, and orbital ephemeris. Our simultaneous fit to the transit, secondary eclipse, and radial velocity data allows us to determine the eccentricity (e = 0.50910 \u00b1 0.00048) and argument of periapse (\u03c9 = 188\u00b0.09 \u00b1 0\u00b0.39) of HAT-P-2b's orbit with a greater precision than has been achieved for any other eccentric extrasolar planet. We also find evidence for a long-term linear trend in the radial velocity data. This trend suggests the presence of another substellar companion in the HAT-P-2 system, which could have caused HAT-P-2b to migrate inward to its present-day orbit via the Kozai mechanism.", "date": "2013-04-01", "date_type": "published", "publication": "Astrophysical Journal", "volume": "766", "number": "2", "publisher": "American Astronomical Society", "pagerange": "Art. No. 95", "id_number": "CaltechAUTHORS:20130503-092758220", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20130503-092758220", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA/JPL/Caltech" }, { "agency": "NASA Earth and Space Science Fellowship", "grant_number": "NNX08AX02H" }, { "agency": "NASA", "grant_number": "NNX08AF27G" }, { "agency": "Caltech" }, { "agency": "NASA Sagan Fellowship" }, { "agency": "NASA Exoplanet Science Institute" }, { "agency": "W. M. Keck Foundation" } ] }, "local_group": { "items": [ { "id": "Infrared-Processing-and-Analysis-Center-(IPAC)" }, { "id": "Division-of-Geological-and-Planetary-Sciences" } ] }, "doi": "10.1088/0004-637X/766/2/95", "primary_object": { "basename": "0004-637X_766_2_95.pdf", "url": "https://authors.library.caltech.edu/records/qsa9y-0ah53/files/0004-637X_766_2_95.pdf" }, "related_objects": [ { "basename": "1302.5084.pdf", "url": "https://authors.library.caltech.edu/records/qsa9y-0ah53/files/1302.5084.pdf" } ], "resource_type": "article", "pub_year": "2013", "author_list": "Lewis, Nikole K.; Knutson, Heather A.; et el." }, { "id": "https://authors.library.caltech.edu/records/4jkda-xwx28", "eprint_id": 38389, "eprint_status": "archive", "datestamp": "2023-08-19 18:52:12", "lastmod": "2023-10-23 20:07:32", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Bottom-M", "name": { "family": "Bottom", "given": "Michael" }, "orcid": "0000-0003-1341-5531" }, { "id": "Muirhead-P-S", "name": { "family": "Muirhead", "given": "Philip S." }, "orcid": "0000-0002-0638-8822" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" }, { "id": "Blake-C-H", "name": { "family": "Blake", "given": "Cullen H." } } ] }, "title": "Optimizing Doppler Surveys for Planet Yield", "ispublished": "pub", "full_text_status": "public", "keywords": "Extrasolar Planets", "note": "\u00a9 2013. The Astronomical Society of the Pacific. Received 2012 October 06; accepted 2013 February 06; published 2013 March 21. The authors would like to thank (in alphabetical order) Prof. Lynne Hillenbrand (CIT), for providing guidance and expertise; Dr. Sasha Hinkley and Sebastian Pineda (CIT), for helpful critique and discussion; and Dr. Peter Plavchan (IPAC), for detailed comments and perspective on early drafts of the paper. We especially thank the anonymous referee, whose suggestions improved the paper substantially.\n\nPublished - 670174.pdf
", "abstract": "One of the most promising methods of discovering nearby, low-mass planets in the habitable zones of stars is the precision radial velocity technique. However, there are many challenges that must be overcome to efficiently detect low-amplitude Doppler signals. This is both due to the required instrumental sensitivity and the limited amount of observing time. In this article, we examine statistical and instrumental effects on precision radial velocity detection of extrasolar planets, an approach by which we maximize the planet yield in a fixed amount of observing time available on a given telescope. From this perspective, we show that G and K dwarfs observed at 400\u2013600 nm are the best targets for surveys complete down to a given planet mass and out to a specified orbital period. Overall we find that M dwarfs observed at 700\u2013800 nm are the best targets for habitable-zone planets, particularly when including the effects of systematic noise floors. Also, we give quantitative specifications of the instrumental stability necessary to achieve the required velocity precision.", "date": "2013-03", "date_type": "published", "publication": "Publications of the Astronomical Society of the Pacific", "volume": "125", "number": "925", "publisher": "Astronomical Society of the Pacific", "pagerange": "240-251", "id_number": "CaltechAUTHORS:20130509-105925538", "issn": "0004-6280", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20130509-105925538", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "local_group": { "items": [ { "id": "Infrared-Processing-and-Analysis-Center-(IPAC)" } ] }, "doi": "10.1086/670174", "primary_object": { "basename": "670174.pdf", "url": "https://authors.library.caltech.edu/records/4jkda-xwx28/files/670174.pdf" }, "resource_type": "article", "pub_year": "2013", "author_list": "Bottom, Michael; Muirhead, Philip S.; et el." }, { "id": "https://authors.library.caltech.edu/records/egh2c-6tx15", "eprint_id": 37653, "eprint_status": "archive", "datestamp": "2023-08-22 08:43:20", "lastmod": "2023-10-23 17:54:32", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Choi-Jieun", "name": { "family": "Choi", "given": "Jieun" } }, { "id": "McCarthy-C", "name": { "family": "McCarthy", "given": "Chris" } }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "Geoffrey W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "Andrew W." }, "orcid": "0000-0001-8638-0320" }, { "id": "Fischer-D-A", "name": { "family": "Fischer", "given": "Debra A." }, "orcid": "0000-0003-2221-0861" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John A." }, "orcid": "0000-0001-9808-7172" }, { "id": "Isaacson-H-T", "name": { "family": "Isaacson", "given": "Howard" }, "orcid": "0000-0002-0531-1073" }, { "id": "Wright-J-T", "name": { "family": "Wright", "given": "Jason T." }, "orcid": "0000-0001-6160-5888" } ] }, "title": "Precise Doppler Monitoring of Barnard's Star", "ispublished": "pub", "full_text_status": "public", "keywords": "stars: individual (Gl 699); techniques: radial velocities", "note": "\u00a9 2013 American Astronomical Society. Received 2012 May 8; accepted 2012 December 17; published 2013 January 31. \nBased on observations made at Keck Observatory and Lick Observatory.\n\nThis work made use of the Exoplanet Orbit Database and the Exoplanet Data Explorer at www.exoplanets.org. We thank\nour referee, Martin K\u00fcrster, for his valuable suggestions, and Jennifer Bartlett and Joshua Burkart for much helpful input. We acknowledge support by NASA grants NAG5-8299,\nNNX11AK04A, and NSF grant AST95-20443 (to GWM), and by Sun Microsystems. We also thank the Watson and Marilyn Albert SETI Chair fund, and Howard and Astrid Preston for generous\ndonations making this research possible. This research has\nmade use of the NASA Exoplanet Archive, which is operated by\nthe California Institute of Technology, under contract with the National Aeronautics and Space Administration under the Exoplanet Exploration Program; NASA's Astrophysics Data System, and the SIMBAD database, operated at CDS, Strasbourg, France; and the Exoplanet Orbit Database and the Exoplanet Data Explorer at www.exoplanets.org. The Center for Exoplanets and Habitable Worlds is supported by the Pennsylvania State University, the Eberly College of Science, and the Pennsylvania Space Grant Consortium. We thank R. Paul Butler and Steven Vogt for help making observations. We thank the W. M. Keck Observatory and Lick Observatory for their generous allocations of telescope time, and we thank the State of California for its support of operations at both observatories. We thank the W. M. Keck Foundation and NASA for support that made the Keck Observatory possible. We thank the indigenous Hawaiian\npeople for the use of their sacred mountain, Mauna Kea.\n\nPublished - 0004-637X_764_2_131.pdf
", "abstract": "We present 248 precise Doppler measurements of Barnard's Star (Gl 699), the second nearest star system to Earth, obtained from Lick and Keck Observatories during the 25 years between 1987 and 2012. The early precision was 20 m s^(\u20131) but was 2 m s^(\u20131) during the last 8 years, constituting the most extensive and sensitive search for Doppler signatures of planets around this stellar neighbor. We carefully analyze the 136 Keck radial velocities spanning 8 years by first applying a periodogram analysis to search for nearly circular orbits. We find no significant periodic Doppler signals with amplitudes above ~2 m s^(\u20131), setting firm upper limits on the minimum mass (M sin i) of any planets with orbital periods from 0.1 to 1000 days. Using a Monte Carlo analysis for circular orbits, we determine that planetary companions to Barnard's Star with masses above 2 M_\u2295 and periods below 10 days would have been detected. Planets with periods up to 2 years and masses above 10 M_\u2295 (0.03 M_(Jup)) are also ruled out. A similar analysis allowing for eccentric orbits yields comparable mass limits. The habitable zone of Barnard's Star appears to be devoid of roughly Earth-mass planets or larger, save for face-on orbits. Previous claims of planets around the star by van de Kamp are strongly refuted. The radial velocity of Barnard's Star increases with time at 4.515 \u00b1 0.002 m s^(\u20131) yr^(\u20131), consistent with the predicted geometrical effect, secular acceleration, that exchanges transverse for radial components of velocity.", "date": "2013-02-20", "date_type": "published", "publication": "Astrophysical Journal", "volume": "764", "number": "2", "publisher": "American Astronomical Society", "pagerange": "Art. No. 131", "id_number": "CaltechAUTHORS:20130327-131557551", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20130327-131557551", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-8299" }, { "agency": "NASA", "grant_number": "NNX11AK04A" }, { "agency": "NSF", "grant_number": "AST95-20443" }, { "agency": "Sun Microsystems" }, { "agency": "Pennsylvania State University" }, { "agency": "Eberly College of Science" }, { "agency": "Pennsylvania Space Grant Consortium" }, { "agency": "State of California" }, { "agency": "W. M. Keck Foundation" } ] }, "doi": "10.1088/0004-637X/764/2/131", "primary_object": { "basename": "0004-637X_764_2_131.pdf", "url": "https://authors.library.caltech.edu/records/egh2c-6tx15/files/0004-637X_764_2_131.pdf" }, "resource_type": "article", "pub_year": "2013", "author_list": "Choi, Jieun; McCarthy, Chris; et el." }, { "id": "https://authors.library.caltech.edu/records/7bm50-tv614", "eprint_id": 37423, "eprint_status": "archive", "datestamp": "2023-08-22 08:41:25", "lastmod": "2023-10-23 17:26:58", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Swift-J-J", "name": { "family": "Swift", "given": "Jonathan J." }, "orcid": "0000-0002-9486-818X" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" }, { "id": "Morton-T-D", "name": { "family": "Morton", "given": "Timothy D." }, "orcid": "0000-0002-8537-5711" }, { "id": "Crepp-J-R", "name": { "family": "Crepp", "given": "Justin R." }, "orcid": "0000-0003-0800-0593" }, { "id": "Montet-B-T", "name": { "family": "Montet", "given": "Benjamin T." }, "orcid": "0000-0001-7516-8308" }, { "id": "Fabrycky-D-C", "name": { "family": "Fabrycky", "given": "Daniel C." }, "orcid": "0000-0003-3750-0183" }, { "id": "Muirhead-P-S", "name": { "family": "Muirhead", "given": "Philip S." }, "orcid": "0000-0002-0638-8822" } ] }, "title": "Characterizing the Cool KOIs. IV. Kepler-32 as a Prototype for the Formation of Compact Planetary Systems throughout the Galaxy", "ispublished": "pub", "full_text_status": "public", "keywords": "methods: statistical; planetary systems; planets and satellites: detection; planets and satellites: formation; stars: individual (KID 9787239/KOI-952/Kepler-32)", "note": "\u00a9 2013 The American Astronomical Society.\n\nReceived 2012 October 15; accepted 2012 December 11; published 2013 January 29.\n\nThis work has benefited from the feedback and suggestions\nof many people, including but not limited to Andrew Youdin,\nLeslie Rogers, Peter Goldreich, Hilke Schlichting, and Nairn\nBaliber. We also thank the anonymous referee for a thorough\nreview.D.C.F. acknowledges support for thisworkwas provided\nby NASA through Hubble Fellowship grant HF-51272.01-A,\nawarded by the Space Telescope Science Institute, which is\noperated by the Association of Universities for Research in\nAstronomy, Inc., for NASA, under contract NAS 5-26555.\nSome of the data presented herein were obtained at the\nW. M. Keck Observatory, which is operated as a scientific\npartnership among the California Institute of Technology, the University of California and theNational Aeronautics and Space Administration. The Observatory was made possible by the generous financial support of the W. M. Keck Foundation. This paper includes data collected by the Kepler mission. Funding for the Kepler mission is provided by the NASA Science Mission directorate. The Robo-AO system is supported by collaborating partner\ninstitutions, the California Institute of Technology and the Inter-University Centre for Astronomy and Astrophysics, by the National Science Foundation under grant Nos. AST-0906060 and AST-0960343, by a grant from the Mt. Cuba Astronomical Foundation and by a gift from Samuel Oschin.\n\nPublished - 0004-637X_764_1_105.pdf
", "abstract": "The Kepler space telescope has opened new vistas in exoplanet discovery space by revealing populations of Earth-sized planets that provide a new context for understanding planet formation. Approximately 70% of all stars in the Galaxy belong to the diminutive M dwarf class, several thousand of which lie within Kepler's field of view, and a large number of these targets show planet transit signals. The Kepler M dwarf sample has a characteristic mass of 0.5 M_\u2609 representing a stellar population twice as common as Sun-like stars. Kepler-32 is a typical star in this sample that presents us with a rare opportunity: five planets transit this star, giving us an expansive view of its architecture. All five planets of this compact system orbit their host star within a distance one-third the size of Mercury's orbit, with the innermost planet positioned a mere 4.3 stellar radii from the stellar photosphere. New observations limit possible false positive scenarios, allowing us to validate the entire Kepler-32 system making it the richest known system of transiting planets around an M dwarf. Based on considerations of the stellar dust sublimation radius, a minimum mass protoplanetary nebula, and the near period commensurability of three adjacent planets, we propose that the Kepler-32 planets formed at larger orbital radii and migrated inward to their present locations. The volatile content inferred for the Kepler-32 planets and order of magnitude estimates for the disk migration rates suggest that these planets may have formed beyond the snow line and migrated in the presence of a gaseous disk. If true, then this would place an upper limit on their formation time of ~10 Myr. The Kepler-32 planets are representative of the full ensemble of planet candidates orbiting the Kepler M dwarfs for which we calculate an occurrence rate of 1.0 \u00b1 0.1 planet per star. The formation of the Kepler-32 planets therefore offers a plausible blueprint for the formation of one of the largest known populations of planets in our Galaxy.", "date": "2013-02-10", "date_type": "published", "publication": "Astrophysical Journal", "volume": "764", "number": "1", "publisher": "American Astronomical Society", "pagerange": "Art. No. 105", "id_number": "CaltechAUTHORS:20130308-134732086", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20130308-134732086", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA Hubble Fellowship", "grant_number": "HF-51272.01-A" }, { "agency": "NASA", "grant_number": "NAS 5-26555" } ] }, "doi": "10.1088/0004-637X/764/1/105", "primary_object": { "basename": "0004-637X_764_1_105.pdf", "url": "https://authors.library.caltech.edu/records/7bm50-tv614/files/0004-637X_764_1_105.pdf" }, "resource_type": "article", "pub_year": "2013", "author_list": "Swift, Jonathan J.; Johnson, John Asher; et el." }, { "id": "https://authors.library.caltech.edu/records/w584a-q9z46", "eprint_id": 36967, "eprint_status": "archive", "datestamp": "2023-08-22 08:24:14", "lastmod": "2023-10-23 15:59:31", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" }, { "id": "Morton-T-D", "name": { "family": "Morton", "given": "Timothy D." }, "orcid": "0000-0002-8537-5711" }, { "id": "Wright-J-T", "name": { "family": "Wright", "given": "Jason T." }, "orcid": "0000-0001-6160-5888" } ] }, "title": "Retired A Stars: The Effect of Stellar Evolution on the Mass Estimates of Subgiants", "ispublished": "pub", "full_text_status": "public", "keywords": "planetary systems; stars: evolution; stars: fundamental parameters; stars: general", "note": "\u00a9 2013 American Astronomical Society. Received 2012 August 25; accepted 2012 November 27; published 2013 January 8. We gratefully acknowledge the insightful comments and edits of earlier drafts of this manuscript provided by Rebekah\nDawson, Kaitlin Kratter, Geoff Marcy, Ed Turner, and Jon\nSwift. We thank James Lloyd for his comments and assistance\nwith understanding the arguments of L11, and also for his\nmany collegial discussions and thoughtful feedback on previous drafts of this manuscript. We also thank Leo Girardi for sending us his Perl scripts and providing advice and information about the TRILEGAL code. J.A.J. acknowledges support from the Alfred P. Sloan Foundation, and the David and Lucile Packard Foundation. The Center for Exoplanets and Habitable Worlds is supported by the Pennsylvania State University, the Eberly College of Science, and the Pennsylvania Space Grant Consortium.\n\nPublished - 0004-637X_763_1_53.pdf
", "abstract": "Doppler surveys have shown that the occurrence rate of Jupiter-mass planets appears to increase as a function of stellar mass. However, this result depends on the ability to accurately measure the masses of evolved stars. Recently, Lloyd called into question the masses of subgiant stars targeted by Doppler surveys. Lloyd argues that very few observable subgiants have masses greater than 1.5 M_\u2609, and that most of them have masses in the range 1.0-1.2 M_\u2609. To investigate this claim, we use Galactic stellar population models to generate an all-sky distribution of stars. We incorporate the effects that make massive subgiants less numerous, such as the initial mass function and differences in stellar evolution timescales. We find that these effects lead to negligibly small systematic errors in stellar mass estimates, in contrast to the \u224850% errors predicted by Lloyd. Additionally, our simulated target sample does in fact include a significant fraction of stars with masses greater than 1.5 M_\u2609, primarily because the inclusion of an apparent magnitude limit results in a Malmquist-like bias toward more massive stars, in contrast to the volume-limited simulations of Lloyd. The magnitude limit shifts the mean of our simulated distribution toward higher masses and results in a relatively smaller number of evolved stars with masses in the range 1.0-1.2 M_\u2609. We conclude that, within the context of our present-day understanding of stellar structure and evolution, many of the subgiants observed in Doppler surveys are indeed as massive as main-sequence A stars.", "date": "2013-01-20", "date_type": "published", "publication": "Astrophysical Journal", "volume": "763", "number": "1", "publisher": "American Astronomical Society", "pagerange": "Art. No. 53", "id_number": "CaltechAUTHORS:20130215-145920156", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20130215-145920156", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "Alfred P. Sloan Foundation" }, { "agency": "David and Lucile Packard Foundation" }, { "agency": "Pennsylvania State University" }, { "agency": "Eberly College of Science" }, { "agency": "Pennsylvania Space Grant Consortium" } ] }, "doi": "10.1088/0004-637X/763/1/53", "primary_object": { "basename": "0004-637X_763_1_53.pdf", "url": "https://authors.library.caltech.edu/records/w584a-q9z46/files/0004-637X_763_1_53.pdf" }, "resource_type": "article", "pub_year": "2013", "author_list": "Johnson, John Asher; Morton, Timothy D.; et el." }, { "id": "https://authors.library.caltech.edu/records/qs7ag-wa014", "eprint_id": 36779, "eprint_status": "archive", "datestamp": "2023-08-22 08:18:16", "lastmod": "2023-10-23 15:46:22", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Montet-B-T", "name": { "family": "Montet", "given": "Benjamin T." }, "orcid": "0000-0001-7516-8308" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" } ] }, "title": "Model-independent Stellar and Planetary Masses from Multi-transiting Exoplanetary Systems", "ispublished": "pub", "full_text_status": "public", "keywords": "methods: analytical; planets and satellites: fundamental parameters; stars: fundamental parameters", "note": "\u00a9 2013 American Astronomical Society. Received 2012 September 7; accepted 2012 November 18; published 2012 December 20. We thank Rebekah Dawson, Jonathan Swift, Daniel Fabrycky, and Michael Bottom for insightful discussions and helpful comments during the preparation of this manuscript. We also thank Philip Muirhead for thoughtful commentary and discussion during the 2012 July Sagan Exoplanet Summer Workshop. The data presented herein were obtained in part at the W. M. Keck Observatory,\nwhich is operated as a scientific partnership among the\nCalifornia Institute of Technology, the University of California, and NASA and was made possible by the generous financial support of the W. M. Keck Foundation. We extend special thanks to those of Hawaiian ancestry on whose sacred mountain of Mauna Kea we are privileged to be guests. Without their generous hospitality, the HIRES observations presented herein would not have been possible.\n\nPublished - 0004-637X_762_2_112.pdf
", "abstract": "Precise exoplanet characterization requires precise classification of exoplanet host stars. The masses of host stars are commonly estimated by comparing their spectra to those predicted by stellar evolution models. However, spectroscopically determined properties are difficult to measure accurately for stars that are substantially different from the Sun, such as M-dwarfs and evolved stars. Here, we propose a new method to dynamically measure the masses of transiting planets near mean-motion resonances and their host stars by combining observations of transit timing variations with radial velocity (RV) measurements. We derive expressions to analytically determine the mass of each member of the system and demonstrate the technique on the Kepler-18 system. We compare these analytic results to numerical simulations and find that the two are consistent. We identify eight systems for which our technique could be applied if follow-up RV measurements are collected. We conclude that this analysis would be optimal for systems discovered by next-generation missions similar to TESS or PLATO, which will target bright stars that are amenable to efficient RV follow-up.", "date": "2013-01-10", "date_type": "published", "publication": "Astrophysical Journal", "volume": "762", "number": "2", "publisher": "American Astronomical Society", "pagerange": "Art. No. 112", "id_number": "CaltechAUTHORS:20130205-105940529", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20130205-105940529", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "W. M. Keck Foundation" } ] }, "doi": "10.1088/0004-637X/762/2/112", "primary_object": { "basename": "0004-637X_762_2_112.pdf", "url": "https://authors.library.caltech.edu/records/qs7ag-wa014/files/0004-637X_762_2_112.pdf" }, "resource_type": "article", "pub_year": "2013", "author_list": "Montet, Benjamin T. and Johnson, John Asher" }, { "id": "https://authors.library.caltech.edu/records/m0eem-8k005", "eprint_id": 37132, "eprint_status": "archive", "datestamp": "2023-08-22 08:05:48", "lastmod": "2023-10-23 16:59:54", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Bensby-T", "name": { "family": "Bensby", "given": "T." } }, { "id": "Yee-Jennifer-C", "name": { "family": "Yee", "given": "J. C." }, "orcid": "0000-0001-9481-7123" }, { "id": "Feltzing-S", "name": { "family": "Feltzing", "given": "S." } }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "J. A." }, "orcid": "0000-0001-9808-7172" }, { "id": "Gould-A", "name": { "family": "Gould", "given": "A." } }, { "id": "Cohen-J-G", "name": { "family": "Cohen", "given": "J. G." }, "orcid": "0000-0002-8039-4673" }, { "id": "Asplund-M", "name": { "family": "Asplund", "given": "M." } }, { "id": "Mel\u00e9ndez-J", "name": { "family": "Mel\u00e9ndez", "given": "J." }, "orcid": "0000-0002-4933-2239" }, { "id": "Lucatello-S", "name": { "family": "Lucatello", "given": "S." } }, { "id": "Han-C", "name": { "family": "Han", "given": "C." } }, { "id": "Thompson-I", "name": { "family": "Thompson", "given": "I." } }, { "id": "Gal-Yam-A", "name": { "family": "Gal-Yam", "given": "A." }, "orcid": "0000-0002-3653-5598" }, { "id": "Udalski-A", "name": { "family": "Udalski", "given": "A." }, "orcid": "0000-0001-5207-5619" }, { "id": "Bennett-D-P", "name": { "family": "Bennett", "given": "D. P." }, "orcid": "0000-0001-8043-8413" }, { "id": "Bond-I-A", "name": { "family": "Bond", "given": "I. A." } }, { "id": "Kohei-W", "name": { "family": "Kohei", "given": "W." } }, { "id": "Sumi-Takahiro", "name": { "family": "Sumi", "given": "T." } }, { "id": "Suzuki-Daisuke", "name": { "family": "Suzuki", "given": "D." }, "orcid": "0000-0002-5843-9433" }, { "id": "Suzuki-K", "name": { "family": "Suzuki", "given": "K." } }, { "id": "Takino-S", "name": { "family": "Takino", "given": "S." } }, { "id": "Tristram-P", "name": { "family": "Tristram", "given": "P." } }, { "id": "Yamai-N", "name": { "family": "Yamai", "given": "N." } }, { "id": "Yonehara-A", "name": { "family": "Yonehara", "given": "A." } } ] }, "title": "Chemical evolution of the Galactic bulge as traced by microlensed dwarf and subgiant stars. V. Evidence for a wide age distribution and a complex MDF", "ispublished": "pub", "full_text_status": "public", "keywords": "gravitational lensing: micro; Galaxy: bulge; Galaxy: formation; Galaxy: evolution; stars: abundances", "note": "\u00a9 2013 ESO. \n\nReceived: 31 October 2012. Accepted: 28 November 2012. Published online 16 January 2013. \n\nBased on data obtained with the European Southern Observatory telescopes (Proposal ID:s 87.B-0600, 88.B-0349, 89.B-0047, and 90.B-0204), the Magellan Clay telescope at the Las Campanas observatory, and the Keck I telescope at the W.M. Keck Observatory, which is operated as a scientific partnership among the California Institute of Technology, the University of California and the National Aeronautics and Space Administration. \n\nWe are grateful to and thank Patrick Baumann who obtained the MIKE spectrum for MOA-2011-BLG-234S, Julio Chaname who obtained the MIKE spectrum for MOA-2011-BLG-278S, G.W. Marcy who obtained the HIRES spectra for MOA-2011-BLG-191S and OGLE-2012-BLG-0816S, and Elizabeth Wylie and Mario Mateo who obtained the MIKE spectrum for OGLE-2012-BLG-1279S. We would also like to thank Bengt Gustafsson, Bengt Edvardsson, and Kjell Eriksson for usage of the MARCS model atmosphere program and their suite of stellar abundance programs. T.B. was funded by grant No. 621-2009-3911 from The Swedish Research Council. S.F. was partly funded by grant No. 2008-4095 from The Swedish Research Council. \n\nWork by J.C.Y. was supported by an SNSF Graduate Research Fellowship under Grant No. 2009068160. A.G. and J.C.Y. acknowledge support from NSF AST-1103471. M.A. gratefully acknowledges funding from the Australian Research Council (FL110100012). J.L.C. is grateful to NSF award AST-0908139 for partial support. S.L. reasearch is partially supported by the INAF PRIN grant \"Multiple populations in Globular Clusters: their role in the Galaxy assembly\" J.M. thanks support from FAPESP (2010/50930-6), USP (Novos Docentes) and CNPq (Bolsa de produtividade). A.G.-Y. acknowledges support by the Lord Sieff of Brimpton Fund. The OGLE project has received funding from the European Research Council under the European Community's Seventh Framework Programme (FP7/2007-2013) / ERC grant agreement No. 246678 to AU. Work by C.H. was supported by the Creative Research Initiative Program (2009-0081561) of National Research Foundation of Korea. T.B, S.F., and J.A.J. are grateful to the Aspen Center for Physics and the NSF Grant 1066293 for hospitality during the \"Galactic bulge and bar\" workshop in August 2011, where many inspiring discussions were held.\n\nPublished - aa20678-12.pdf
Accepted Version - 1211.6848.pdf
", "abstract": "Based on high-resolution spectra obtained during gravitational microlensing events we present a detailed elemental abundance analysis of 32 dwarf and subgiant stars in the Galactic bulge. Combined with the sample of 26 stars from the previous papers in this series, we now have 58 microlensed bulge dwarfs and subgiants that have been homogeneously analysed. The main characteristics of the sample and the findings that can be drawn are: (i) the metallicity distribution (MDF) is wide and spans all metallicities between [Fe/H] = \u22121.9 to +0.6; (ii) the dip in the MDF around solar metallicity that was apparent in our previous analysis of a smaller sample (26 microlensed stars) is no longer evident; instead it has a complex structure and indications of multiple components are starting to emerge. A tentative interpretation is that there could be different stellar populations at interplay, each with a different scale height: the thin disk, the thick disk, and a bar population; (iii) the stars with [Fe/H] \u2272 \u22120.1 are old with ages between 10 and 12 Gyr; (iv) the metal-rich stars with [Fe/H] \u2273 \u22120.1 show a wide variety of ages, ranging from 2 to 12 Gyr with a distribution that has a dominant peak around 4\u22125 Gyr and a tail towards higher ages; (v) there are indications in the [\u03b1/Fe]\u2212[Fe/H] abundance trends that the \"knee\" occurs around [Fe/H] = \u22120.3 to \u22120.2, which is a slightly higher metallicity as compared to the \"knee\" for the local thick disk. This suggests that the chemical enrichment of the metal-poor bulge has been somewhat faster than what is observed for the local thick disk. The results from the microlensed bulge dwarf stars in combination with other findings in the literature, in particular the evidence that the bulge has cylindrical rotation, indicate that the Milky Way could be an almost pure disk galaxy. The bulge would then just be a conglomerate of the other Galactic stellar populations (thin disk, thick disk, halo, and ...?), residing together in the central parts of the Galaxy, influenced by the Galactic bar.", "date": "2013-01", "date_type": "published", "publication": "Astronomy and Astrophysics", "volume": "549", "publisher": "EDP Sciences", "pagerange": "Art. No. A147", "id_number": "CaltechAUTHORS:20130226-090902254", "issn": "0004-6361", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20130226-090902254", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "Swedish Research Council", "grant_number": "621-2009-3911" }, { "agency": "Swedish Research Council", "grant_number": "2008-4095" }, { "agency": "Swiss National Science Foundation (SNSF)", "grant_number": "2009068160" }, { "agency": "NSF", "grant_number": "AST-1103471" }, { "agency": "Australian Research Council", "grant_number": "FL110100012" }, { "agency": "NSF", "grant_number": "AST-0908139" }, { "agency": "Istituto Nazionale di Astrofisica (INAF)" }, { "agency": "Funda\u00e7\u00e3o de Amparo \u00e0 Pesquisa do Estado de S\u00e3o Paulo (FAPESP)", "grant_number": "2010/50930-6" }, { "agency": "Universidade de S\u00e3o Paulo" }, { "agency": "Conselho Nacional de Desenvolvimento Cient\u00edfico e Tecnol\u00f3gico (CNPq)" }, { "agency": "Lord Sieff of Brimpton Fund" }, { "agency": "European Research Council (ERC)", "grant_number": "FP7/2007-2013" }, { "agency": "European Research Council (ERC)", "grant_number": "246678" }, { "agency": "National Research Foundation of Korea", "grant_number": "2009-0081561" }, { "agency": "Aspen Center for Physics" }, { "agency": "NSF", "grant_number": "PHY-1066293" } ] }, "doi": "10.1051/0004-6361/201220678", "primary_object": { "basename": "1211.6848.pdf", "url": "https://authors.library.caltech.edu/records/m0eem-8k005/files/1211.6848.pdf" }, "related_objects": [ { "basename": "aa20678-12.pdf", "url": "https://authors.library.caltech.edu/records/m0eem-8k005/files/aa20678-12.pdf" } ], "resource_type": "article", "pub_year": "2013", "author_list": "Bensby, T.; Yee, J. C.; et el." }, { "id": "https://authors.library.caltech.edu/records/n682n-y7370", "eprint_id": 36480, "eprint_status": "archive", "datestamp": "2023-08-19 13:54:42", "lastmod": "2023-10-20 23:12:14", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Li-Weibin", "name": { "family": "Li", "given": "Weibin" } }, { "id": "Chung-Hoyong", "name": { "family": "Chung", "given": "Hoyong" } }, { "id": "Daeffler-C-S", "name": { "family": "Daeffler", "given": "Chris" } }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "Jeremiah A." }, "orcid": "0000-0001-9808-7172" }, { "id": "Grubbs-R-H", "name": { "family": "Grubbs", "given": "Robert H." }, "orcid": "0000-0002-0057-7817" } ] }, "title": "Application of ^1H DOSY for Facile Measurement of Polymer Molecular Weights", "ispublished": "pub", "full_text_status": "public", "note": "\u00a9 2012 American Chemical Society. \n\nReceived: August 7, 2012. Revised: October 11, 2012. Published: December 4, 2012. \n\nFinancial support by NIH (R01 GM031332-28) is acknowledged. The authors thank Marc M. Baum at the Oak Crest Institute for generously providing Bruker 300 MHz NMR for diffusion experiments. We also thank Prof. Paul G. Williard at Brown University for constructive advices.\n\nPublished - ma301666x.pdf
Accepted Version - nihms426718.pdf
Supplemental Material - ma301666x_si_001.pdf
", "abstract": "To address the practical issues of polymer molecular weight determination, the first accurate polymer weight-average molecular weight determination method in diverse living/controlled polymerization via DOSY (diffusion-ordered NMR spectroscopy) is reported. Based on the linear correlation between the logarithm of diffusion coefficient (log D) and the molecular weights (log M_w), external calibration curves were created to give predictions of molecular weights of narrowly dispersed polymers. This method was successfully applied to atom transfer radical polymerization (ATRP), reversible addition\u2013fragmentation chain transfer (RAFT), and ring-opening metathesis polymerization (ROMP), with weight-average molecular weights given by this method closely correlated to those obtained from GPC measurement.", "date": "2012-12-25", "date_type": "published", "publication": "Macromolecules", "volume": "45", "number": "24", "publisher": "American Chemical Society", "pagerange": "9595-9603", "id_number": "CaltechAUTHORS:20130118-113515924", "issn": "0024-9297", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20130118-113515924", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NIH", "grant_number": "R01 GM031332-28" } ] }, "doi": "10.1021/ma301666x", "pmcid": "PMC3545650", "primary_object": { "basename": "nihms426718.pdf", "url": "https://authors.library.caltech.edu/records/n682n-y7370/files/nihms426718.pdf" }, "related_objects": [ { "basename": "ma301666x.pdf", "url": "https://authors.library.caltech.edu/records/n682n-y7370/files/ma301666x.pdf" }, { "basename": "ma301666x_si_001.pdf", "url": "https://authors.library.caltech.edu/records/n682n-y7370/files/ma301666x_si_001.pdf" } ], "resource_type": "article", "pub_year": "2012", "author_list": "Li, Weibin; Chung, Hoyong; et el." }, { "id": "https://authors.library.caltech.edu/records/31mpb-rbn65", "eprint_id": 36329, "eprint_status": "archive", "datestamp": "2023-08-19 13:52:51", "lastmod": "2023-10-20 23:01:03", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Dawson-R-I", "name": { "family": "Dawson", "given": "Rebekah I." }, "orcid": "0000-0001-9677-1296" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" }, { "id": "Morton-T-D", "name": { "family": "Morton", "given": "Timothy D." }, "orcid": "0000-0002-8537-5711" }, { "id": "Crepp-J-R", "name": { "family": "Crepp", "given": "Justin R." }, "orcid": "0000-0003-0800-0593" }, { "id": "Fabrycky-D-C", "name": { "family": "Fabrycky", "given": "Daniel C." }, "orcid": "0000-0003-3750-0183" }, { "id": "Murray-Clay-R-A", "name": { "family": "Murray-Clay", "given": "Ruth A." }, "orcid": "0000-0001-5061-0462" }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "Andrew W." }, "orcid": "0000-0001-8638-0320" } ] }, "title": "The Photoeccentric Effect and Proto-hot Jupiters. II. KOI-1474.01, a Candidate Eccentric Planet Perturbed by an Unseen Companion", "ispublished": "pub", "full_text_status": "public", "keywords": "planetary systems", "note": "\u00a9 2012 American Astronomical Society. Received 2012 July 3; accepted 2012 October 13; published 2012 December 5. We thank the anonymous reviewer for the helpful and timely\nreport. R.I.D. gratefully acknowledges support by the National Science Foundation Graduate Research Fellowship under grant DGE-1144152. J.A.J. acknowledges support from the Alfred P. Sloan Foundation. D.C.F. (not to be confused with the DCF) is supported by NASA Hubble Fellowship HF-51272.01. A.W.H. acknowledges support from NASA Origins of Solar Systems grant NNX12AJ23G. We thank Zachary Berta, Joshua Carter, Courtney Dressing, Emily Fabrycky, Jonathan Irwin, Scott Kenyon, David Kipping, Maxwell Moe, Norman Murray, Smadar Naoz, and Roberto Sanchis Ojeda for helpful comments and discussions. Special thanks to J. Zachary Gazak for helpful modifications to the TAP code. This paper includes data collected by the Kepler mission. Funding for the Kepler mission is provided by the NASA Science Mission directorate. Some of the data presented in this paper were obtained from the Multimission Archive at the Space Telescope Science Institute (MAST). STScI is operated by the\nAssociation of Universities for Research in Astronomy, Inc.,\nunder NASA contract NAS5-26555. Support for MAST for non-\nHST data is provided by the NASA Office of Space Science via\ngrant NNX09AF08G and by other grants and contracts. This research has made use of the Exoplanet Orbit Database and the Exoplanet Data Explorer, as well the SIMBAD database,\noperated at CDS, Strasbourg, France.\n\nPublished - 0004-637X_761_2_163.pdf
", "abstract": "The exoplanets known as hot Jupiters\u2014Jupiter-sized planets with periods of less than 10 days\u2014likely are relics of dynamical processes that shape all planetary system architectures. Socrates et al. argued that high eccentricity migration (HEM) mechanisms proposed for situating these close-in planets should produce an observable population of highly eccentric proto-hot Jupiters that have not yet tidally circularized. HEM should also create failed-hot Jupiters, with periapses just beyond the influence of fast circularization. Using the technique we previously presented for measuring eccentricities from photometry (the \"photoeccentric effect\"), we are distilling a collection of eccentric proto- and failed-hot Jupiters from the Kepler Objects of Interest (KOI). Here, we present the first, KOI-1474.01, which has a long orbital period (69.7340 days) and a large eccentricity e = 0.81^(+0.10)_(\u20130.07), skirting the proto-hot Jupiter boundary. Combining Kepler photometry, ground-based spectroscopy, and stellar evolution models, we characterize host KOI-1474 as a rapidly rotating F star. Statistical arguments reveal that the transiting candidate has a low false-positive probability of 3.1%. KOI-1474.01 also exhibits transit-timing variations of the order of an hour. We explore characteristics of the third-body perturber, which is possibly the \"smoking-gun\" cause of KOI-1474.01's large eccentricity. We use the host star's period, radius, and projected rotational velocity to measure the inclination of the stellar spin. Comparing KOI 1474.01's inclination, we find that its orbit is marginally consistent with being aligned with the stellar spin axis, although a reanalysis is warranted with future additional data. Finally, we discuss how the number and existence of proto-hot Jupiters will not only demonstrate that hot Jupiters migrate via HEM, but also shed light on the typical timescale for the mechanism.", "date": "2012-12-20", "date_type": "published", "publication": "Astrophysical Journal", "volume": "761", "number": "2", "publisher": "American Astronomical Society", "pagerange": "Art. No. 163", "id_number": "CaltechAUTHORS:20130111-141747594", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20130111-141747594", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NSF Graduate Research Fellowship", "grant_number": "DGE-1144152" }, { "agency": "Alfred P. Sloan Foundation" }, { "agency": "NASA Hubble Fellowship", "grant_number": "HF-51272.01-A" }, { "agency": "NASA", "grant_number": "NNX12AJ23G" }, { "agency": "NASA", "grant_number": "NAS5-26555" }, { "agency": "NASA", "grant_number": "NNX09AF08G" } ] }, "doi": "10.1088/0004-637X/761/2/163", "primary_object": { "basename": "0004-637X_761_2_163.pdf", "url": "https://authors.library.caltech.edu/records/31mpb-rbn65/files/0004-637X_761_2_163.pdf" }, "resource_type": "article", "pub_year": "2012", "author_list": "Dawson, Rebekah I.; Johnson, John Asher; et el." }, { "id": "https://authors.library.caltech.edu/records/khsqq-fj421", "eprint_id": 36229, "eprint_status": "archive", "datestamp": "2023-08-22 07:55:30", "lastmod": "2023-10-20 22:54:06", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Crepp-J-R", "name": { "family": "Crepp", "given": "Justin R." }, "orcid": "0000-0003-0800-0593" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "Andrew W." }, "orcid": "0000-0001-8638-0320" }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "Geoff W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Fischer-D-A", "name": { "family": "Fischer", "given": "Debra A." }, "orcid": "0000-0003-2221-0861" }, { "id": "Hillenbrand-L-A", "name": { "family": "Hillenbrand", "given": "Lynne A." } }, { "id": "Yantek-S-M", "name": { "family": "Yantek", "given": "Scott M." } }, { "id": "Delaney-C-R", "name": { "family": "Delaney", "given": "Colleen R." } }, { "id": "Wright-J-T", "name": { "family": "Wright", "given": "Jason T." }, "orcid": "0000-0001-6160-5888" }, { "id": "Isaacson-H-T", "name": { "family": "Isaacson", "given": "Howard T." }, "orcid": "0000-0002-0531-1073" }, { "id": "Montet-B-T", "name": { "family": "Montet", "given": "Benjamin T." }, "orcid": "0000-0001-7516-8308" } ] }, "title": "The TRENDS High-contrast Imaging Survey. I. Three Benchmark M Dwarfs Orbiting Solar-type Stars", "ispublished": "pub", "full_text_status": "public", "keywords": "astrometry; stars: individual (HD 53665, HD 68017, HD 71881); stars: low-mass; techniques: high angular resolution; techniques: radial velocities", "note": "\u00a9 2012 American Astronomical Society. Received 2012 July 9; accepted 2012 October 10; published 2012 November 20. J.C. acknowledges support from NASA Origins grant NNX13AB03G. The data presented herein were obtained at the W. M. Keck Observatory, which is operated as a scientific partnership among the California Institute of Technology, the University of California, and the National Aeronautics and Space Administration. The Observatory was made possible by the generous financial support of the W. M. Keck Foundation.\n\nPublished - 0004-637X_761_1_39.pdf
", "abstract": "We present initial results from a new high-contrast imaging program dedicated to stars that exhibit long-term Doppler radial velocity accelerations (or \"trends\"). The goal of the TRENDS (TaRgetting bENchmark-objects with Doppler Spectroscopy) imaging survey is to directly detect and study the companions responsible for accelerating their host star. In this first paper of the series, we report the discovery of low-mass stellar companions orbiting HD 53665, HD 68017, and HD 71881 using NIRC2 adaptive optics (AO) observations at Keck. Follow-up imaging demonstrates association through common proper motion. These comoving companions have red colors with estimated spectral types of K7-M0, M5, and M3-M4, respectively. We determine a firm lower limit to their mass from Doppler and astrometric measurements. In the near future, it will be possible to construct three-dimensional orbits and calculate the dynamical mass of HD 68017 B and possibly HD 71881 B. We already detect astrometric orbital motion of HD 68017 B, which has a projected separation of 13.0 AU. Each companion is amenable to AO-assisted direct spectroscopy. Further, each companion orbits a solar-type star, making it possible to infer metallicity and age from the primary. Such benchmark objects are essential for testing theoretical models of cool dwarf atmospheres.", "date": "2012-12-10", "date_type": "published", "publication": "Astrophysical Journal", "volume": "761", "number": "1", "publisher": "American Astronomical Society", "pagerange": "Art. No. 39", "id_number": "CaltechAUTHORS:20130108-094023981", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20130108-094023981", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNX13AB03G" }, { "agency": "W. M. Keck Foundation" } ] }, "local_group": { "items": [ { "id": "Infrared-Processing-and-Analysis-Center-(IPAC)" } ] }, "doi": "10.1088/0004-637X/761/1/39", "primary_object": { "basename": "0004-637X_761_1_39.pdf", "url": "https://authors.library.caltech.edu/records/khsqq-fj421/files/0004-637X_761_1_39.pdf" }, "resource_type": "article", "pub_year": "2012", "author_list": "Crepp, Justin R.; Johnson, John Asher; et el." }, { "id": "https://authors.library.caltech.edu/records/8d6df-vxy05", "eprint_id": 35899, "eprint_status": "archive", "datestamp": "2023-08-19 13:27:31", "lastmod": "2023-10-20 21:54:15", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Dragomir-D", "name": { "family": "Dragomir", "given": "Diana" }, "orcid": "0000-0003-2313-467X" }, { "id": "Matthews-J-M", "name": { "family": "Matthews", "given": "Jaymie M." }, "orcid": "0000-0002-4461-080X" }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "Andrew W." }, "orcid": "0000-0001-8638-0320" }, { "id": "Antoci-V", "name": { "family": "Antoci", "given": "Victoria" }, "orcid": "0000-0002-0865-3650" }, { "id": "Henry-G-W", "name": { "family": "Henry", "given": "Gregory W." }, "orcid": "0000-0003-4155-8513" }, { "id": "Guenther-D-B", "name": { "family": "Guenther", "given": "David B." } }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John A." }, "orcid": "0000-0001-9808-7172" }, { "id": "Kuschnig-R", "name": { "family": "Kuschnig", "given": "Rainer" } }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "Geoffrey W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Moffat-A-F-J", "name": { "family": "Moffat", "given": "Anthony F. J." } }, { "id": "Rowe-J-F", "name": { "family": "Rowe", "given": "Jason F." }, "orcid": "0000-0002-5904-1865" }, { "id": "Rucinski-S-M", "name": { "family": "Rucinski", "given": "Slavek M." } }, { "id": "Sasselov-D", "name": { "family": "Sasselov", "given": "Dimitar" } }, { "id": "Weiss-W-W", "name": { "family": "Weiss", "given": "Werner W." } } ] }, "title": "Non-detection of Previously Reported Transits of HD 97658b with MOST Photometry", "ispublished": "pub", "full_text_status": "public", "note": "\u00a9 2012 American Astronomical Society. Received 2012 April 13; accepted 2012 October 11; published 2012 October 25. \nBased on data from the MOST satellite, a Canadian Space Agency mission\noperated by Microsatellite Systems Canada Inc. (MSCI; former Dynacon Inc.)\nand the Universities of Toronto and British Columbia, with the assistance of\nthe University of Vienna.\n\nWe thank Heather Knutson, Peter McCullough, and David\nAnderson for helpful conversations, as well as the many observers who contributed to the measurements reported here.\nWe are thankful to the referee, Dan Fabrycky, for his comments and suggestions which have significantly improved this manuscript. We gratefully acknowledge the efforts and dedication of the Keck Observatory staff, especially Scott Dahm, Hien Tran, and Grant Hill for support of HIRES and Greg Wirth for support of remote observing. We extend special thanks to those of Hawaiian ancestry on whose sacred mountain of Mauna Kea we are privileged to be guests. Without their generous hospitality, the Keck observations presented herein would not have been possible.\nD.D. is supported by a University of British Columbia Four\nYear Fellowship. Funding for the Stellar Astrophysics Centre\n(SAC) is provided by The Danish National Research Foundation\nand research is supported by the ASTERISK project (ASTERoseismic Investigations with SONG and Kepler)\nfunded by the European Research Council (grant agreement\nNo. 267864). The Natural Sciences and Engineering Research\nCouncil of Canada supports the research of D.B.G., J.M.M.,\nA.F.J.M., and S.M.R. Additional support for A.F.J.M. comes\nfrom FQRNT (Qu\u00e9bec). R.K. and W.W.W. were supported by\nthe Austrian Science Fund (P22691-N16) and by the Austrian\nResearch Promotion Agency-ALR.\n\nPublished - 2041-8205_759_2_L41.pdf
", "abstract": "The radial velocity-discovered exoplanet HD 97658b was recently announced to transit, with a derived planetary radius of 2.93 \u00b1 0.28 R_\u2295. As a transiting super-Earth orbiting a bright star, this planet would make an attractive candidate for additional observations, including studies of its atmospheric properties. We present and analyze follow-up photometric observations of the HD 97658 system acquired with the Microvariability and Oscillations of STars space telescope. Our results show no transit with the depth and ephemeris reported in the announcement paper. For the same ephemeris, we rule out transits for a planet with radius larger than 2.09 R_\u2295, corresponding to the reported 3\u03c3 lower limit. We also report new radial velocity measurements which continue to support the existence of an exoplanet with a period of 9.5 days, and obtain improved orbital parameters.", "date": "2012-11-10", "date_type": "published", "publication": "Astrophysical Journal Letters", "volume": "759", "number": "2", "publisher": "American Astronomical Society", "pagerange": "Art. No. L41", "id_number": "CaltechAUTHORS:20121211-082050010", "issn": "2041-8205", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20121211-082050010", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "University of British Columbia" }, { "agency": "Danish National Research Foundation" }, { "agency": "European Research Council (ERC)", "grant_number": "267864 ASTERISK" }, { "agency": "Natural Sciences and Engineering Research Council of Canada (NSERC)" }, { "agency": "Fonds Qu\u00e9b\u00e9cois de la Recherche sur la Nature et les Technologies (FQRNT)" }, { "agency": "FWF Der Wissenschaftsfonds", "grant_number": "P22691-N16" }, { "agency": "Austrian Research Promotion Agency-ALR" } ] }, "doi": "10.1088/2041-8205/759/2/L41", "primary_object": { "basename": "2041-8205_759_2_L41.pdf", "url": "https://authors.library.caltech.edu/records/8d6df-vxy05/files/2041-8205_759_2_L41.pdf" }, "resource_type": "article", "pub_year": "2012", "author_list": "Dragomir, Diana; Matthews, Jaymie M.; et el." }, { "id": "https://authors.library.caltech.edu/records/wjnpw-f8f52", "eprint_id": 35783, "eprint_status": "archive", "datestamp": "2023-09-14 19:42:04", "lastmod": "2023-10-23 20:54:49", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Hartman-J-D", "name": { "family": "Hartman", "given": "J. D." }, "orcid": "0000-0001-8732-6166" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "J. A." }, "orcid": "0000-0001-9808-7172" }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "Andrew W." }, "orcid": "0000-0001-8638-0320" }, { "id": "Fulton-B-J", "name": { "family": "Fulton", "given": "B. J." }, "orcid": "0000-0003-3504-5316" } ] }, "title": "HAT-P-39b\u2013HAT-P-41b: Three Highly Inflated Transiting Hot Jupiters", "ispublished": "pub", "full_text_status": "public", "keywords": "planetary systems; stars: individual (GSC 1364-01424, GSC 3607-01028, GSC 0488-02442); techniques: photometric; techniques: spectroscopic", "note": "\u00a9 2012 American Astronomical Society. \n\nReceived 2012 July 13; accepted 2012 August 30; published 2012 October 9. \n\nBased in part on observations obtained at the W. M. Keck Observatory, which is operated by the University of California and the California Institute of Technology. Keck time has been granted by NOAO (A201Hr, A289Hr, and A284Hr), NASA (N049Hr, N018Hr, N167Hr, N029Hr, N108Hr, and N154Hr),\nand the NOAO Gemini/Keck time-exchange program (G329Hr). Based in parton observations made with the Nordic Optical Telescope, operated on the island of La Palma jointly by Denmark, Finland, Iceland, Norway, and Sweden, in the Spanish Observatorio del Roque de los Muchachos of the\nInstituto de Astrofisica de Canarias. Based in part on observations obtained with facilities of the Las Cumbres Observatory Global Telescope. HATNet operations have been funded by NASA grants NNG04GN74G, NNX08AF23G, and SAO IR&D grants. J.H. acknowledges partial support from NSF grant AST-1108686. G. \u00c1 .B., Z.C., and K.P. acknowledge partial support from NASA grant NNX09AB29G. G.T. acknowledges partial support from NASA grant NNX09AF59G. We acknowledge partial support also from the Kepler mission under NASA Cooperative Agreement NCC2-1390 (PI: D.W.L.). G.K. thanks the Hungarian Scientific Research Foundation (OTKA) for support through grant K-81373. This research has made use of Keck telescope time granted through NOAO (A201Hr, A289Hr, and A284Hr), NASA (N049Hr, N018Hr, N167Hr, N029Hr, N108Hr, and N154Hr), and the NOAO Gemini/Keck time-exchange program (G329Hr). This paper presents observations made with the Nordic Optical Telescope, operated on the island of La Palma jointly by Denmark, Finland, Iceland, Norway, and Sweden, in the Spanish Observatorio del Roque de los Muchachos of the Instituto de Astrofisica de Canarias. This paper uses observations obtained with the facilities of the Las Cumbres Observatory Global Telescope. The Byrne Observatory at Sedgwick (BOS) is operated by the Las CumbresObservatory Global Telescope Network and is located at the Sedgwick Reserve, a part of the University of California Natural Reserve System. Data presented in this paper are based on observations obtained at the HAT station at the Submillimeter Array of SAO and the HAT station at the Fred Lawrence Whipple Observatory of SAO. The authors wish to recognize and acknowledge the very significant\ncultural role and reverence that the summit of Mauna Kea has\nalways had within the indigenous Hawaiian community. We are\nmost fortunate to have the opportunity to conduct observations from this mountain. Finally, we thank the referee for a rapid and helpful report which improved the quality of this paper.\n\nPublished - 1538-3881_144_5_139.pdf
Submitted - 1207.3344v1.pdf
", "abstract": "We report the discovery of three new transiting extrasolar planets orbiting moderately bright (V = 11.1, 11.7, and 12.4) F stars. The planets HAT-P-39b through HAT-P-41b have periods of P = 3.5439 days, 4.4572 days, and 2.6940 days, masses of 0.60 M_J, 0.62 M_J, and 0.80 M_J, and radii of 1.57 R_J, 1.73 R_J, and 1.68 R_J, respectively. They orbit stars with masses of 1.40 M_\u2609, 1.51 M_\u2609, and 1.51 M_\u2609, respectively. The three planets are members of an emerging population of highly inflated Jupiters with 0.4 M_J < M < 1.5 M_J and R > 1.5 R_J.", "date": "2012-11", "date_type": "published", "publication": "Astronomical Journal", "volume": "144", "number": "5", "publisher": "American Astronomical Society", "pagerange": "Art. No. 139", "id_number": "CaltechAUTHORS:20121204-101015608", "issn": "0004-6256", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20121204-101015608", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "National Optical Astronomy Observatory (NOAO)", "grant_number": "A201Hr" }, { "agency": "National Optical Astronomy Observatory (NOAO)", "grant_number": "A289Hr" }, { "agency": "National Optical Astronomy Observatory (NOAO)", "grant_number": "A284Hr" }, { "agency": "NASA", "grant_number": "N049Hr" }, { "agency": "NASA", "grant_number": "N018Hr" }, { "agency": "NASA", "grant_number": "N167Hr" }, { "agency": "NASA", "grant_number": "N029Hr" }, { "agency": "NASA", "grant_number": "N108Hr" }, { "agency": "NASA", "grant_number": "N154Hr" }, { "agency": "National Optical Astronomy Observatory (NOAO)", "grant_number": "G329Hr" }, { "agency": "NASA", "grant_number": "NNG04GN74G" }, { "agency": "NASA", "grant_number": "NNX08AF23G" }, { "agency": "Smithsonian Astrophysical Observatory" }, { "agency": "NSF", "grant_number": "AST-1108686" }, { "agency": "NASA", "grant_number": "NNX09AB29G" }, { "agency": "NASA", "grant_number": "NNX09AF59G" }, { "agency": "NASA", "grant_number": "NCC2-1390" }, { "agency": "Hungarian Scientific Research Foundation (OTKA)", "grant_number": "K-81373" } ] }, "doi": "10.1088/0004-6256/144/5/139", "primary_object": { "basename": "1207.3344v1.pdf", "url": "https://authors.library.caltech.edu/records/wjnpw-f8f52/files/1207.3344v1.pdf" }, "related_objects": [ { "basename": "1538-3881_144_5_139.pdf", "url": "https://authors.library.caltech.edu/records/wjnpw-f8f52/files/1538-3881_144_5_139.pdf" } ], "resource_type": "article", "pub_year": "2012", "author_list": "Hartman, J. D.; Johnson, J. A.; et el." }, { "id": "https://authors.library.caltech.edu/records/hfw8x-wjf81", "eprint_id": 36789, "eprint_status": "archive", "datestamp": "2023-08-22 07:12:42", "lastmod": "2023-10-23 15:46:56", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Sato-Bun'ei", "name": { "family": "Sato", "given": "Bun'ei" } }, { "id": "Hartman-J-D", "name": { "family": "Hartman", "given": "Joel D." }, "orcid": "0000-0001-8732-6166" }, { "id": "Bakos-G-\u00c1", "name": { "family": "Bakos", "given": "Gaspar \u00c1." }, "orcid": "0000-0001-7204-6727" }, { "id": "B\u00e9ky-B", "name": { "family": "B\u00e9ky", "given": "Bence" } }, { "id": "Torres-G", "name": { "family": "Torres", "given": "Guillermo" }, "orcid": "0000-0002-5286-0251" }, { "id": "Latham-D-W", "name": { "family": "Latham", "given": "David W." }, "orcid": "0000-0001-9911-7388" }, { "id": "Kov\u00e1cs-G", "name": { "family": "Kov\u00e1cs", "given": "G\u00e9za" } }, { "id": "Csubry-Z", "name": { "family": "Csubry", "given": "Zolt\u00e1n" } }, { "id": "Penev-K", "name": { "family": "Penev", "given": "Kaloyan" }, "orcid": "0000-0003-4464-1371" }, { "id": "Noyes-R-W", "name": { "family": "Noyes", "given": "Robert W." } }, { "id": "Buchhave-L-A", "name": { "family": "Buchhave", "given": "Lars A." }, "orcid": "0000-0003-1605-5666" }, { "id": "Quinn-S-N", "name": { "family": "Quinn", "given": "Samuel N." }, "orcid": "0000-0002-8964-8377" }, { "id": "Everett-M-E", "name": { "family": "Everett", "given": "Mark" }, "orcid": "0000-0002-0885-7215" }, { "id": "Esquerdo-G-A", "name": { "family": "Esquerdo", "given": "Gilbert A." }, "orcid": "0000-0002-9789-5474" }, { "id": "Fischer-D-A", "name": { "family": "Fischer", "given": "Debra A." }, "orcid": "0000-0003-2221-0861" }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "Andrew W." }, "orcid": "0000-0001-8638-0320" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John A." }, "orcid": "0000-0001-9808-7172" }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "Geoff W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Sasselov-D-D", "name": { "family": "Sasselov", "given": "Dimitar D." }, "orcid": "0000-0001-7014-1771" }, { "id": "Szklen\u00e1r-T", "name": { "family": "Szklen\u00e1r", "given": "Tam\u00e1s" } }, { "id": "L\u00e1z\u00e1r-J", "name": { "family": "L\u00e1z\u00e1r", "given": "J\u00f3zsef" } }, { "id": "Papp-I", "name": { "family": "Papp", "given": "Istv\u00e1n" } }, { "id": "S\u00e1ri-P", "name": { "family": "S\u00e1ri", "given": "P\u00e1l" } } ] }, "title": "HAT-P-38b: A Saturn-Mass Planet Transiting a Late G Star", "ispublished": "pub", "full_text_status": "restricted", "keywords": "stars: individual (GSC 2314-00559); stars: planetary systems; techniques: photometric; techniques: spectroscopic", "note": "\u00a9 2012 Astronomical Society of Japan.\n\nReceived 2012 January 25; accepted 2012 March 13.\n\nHATNet operations have been funded by NASA grants\nNNG04GN74G, NNX08AF23G, NNX09AB29G and SAO IR&D grants. GT acknowledges partial support from NASA grant NNX09AF59G. We also acknowledge partial support from the Kepler Mission under NASA Cooperative Agreement NCC2-1390 (DWL, PI). GK thanks the Hungarian Scientific Research Foundation (OTKA) for support through grant K-81373. This research has made use of Keck telescope time granted through NASA (N108Hr). Based in part on data collected at Subaru Telescope, which is operated by the National Astronomical Observatory of Japan.", "abstract": "We report on the discovery of HAT-P-38b, a Saturn-mass exoplanet, transiting the V = 12.56 dwarf star GSC 2314-00559 on a P = 4.6404 d circular orbit. The host star is a 0.89 M_\u2299 late G dwarf, with solar metallicity and a radius of 0.92 R_\u2299. The planetary companion has a mass of 0.27 M_J and a radius of 0.82 R_J. HAT-P-38b is one of the planets the mass and radius of which have ever been discovered to be the closest to those of Saturn.", "date": "2012-10-25", "date_type": "published", "publication": "Publications of the Astronomical Society of Japan", "volume": "64", "number": "5", "publisher": "Astronomical Society of Japan", "pagerange": "Art. No. 97", "id_number": "CaltechAUTHORS:20130205-162243030", "issn": "0004-6264", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20130205-162243030", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNG04GN74G" }, { "agency": "NASA", "grant_number": "NNX08AF23G" }, { "agency": "NASA", "grant_number": "NNX09AB29G" }, { "agency": "NASA", "grant_number": "NNX09AF59G" }, { "agency": "NASA", "grant_number": "NCC2-1390" }, { "agency": "Hungarian Scientific Research Foundation (OTKA)", "grant_number": "K-81373" }, { "agency": "NASA", "grant_number": "N108Hr" }, { "agency": "Smithsonian Astrophysical Observatory" } ] }, "resource_type": "article", "pub_year": "2012", "author_list": "Sato, Bun'ei; Hartman, Joel D.; et el." }, { "id": "https://authors.library.caltech.edu/records/6v4kh-2nk94", "eprint_id": 35631, "eprint_status": "archive", "datestamp": "2023-08-19 13:13:42", "lastmod": "2023-10-20 19:14:06", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Burts-A-O", "name": { "family": "Burts", "given": "Alan O." } }, { "id": "Li-Yongjun", "name": { "family": "Li", "given": "Yongjun" } }, { "id": "Zhukhovitskiy-A-V", "name": { "family": "Zhukhovitskiy", "given": "Aleksandr V." } }, { "id": "Patel-P-R", "name": { "family": "Patel", "given": "Paresma R." } }, { "id": "Grubbs-R-H", "name": { "family": "Grubbs", "given": "Robert H." }, "orcid": "0000-0002-0057-7817" }, { "id": "Ottaviani-M-F", "name": { "family": "Ottaviano", "given": "M. Francesca" } }, { "id": "Turro-N-J", "name": { "family": "Turro", "given": "Nicholas J." } }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "Jeremiah A." }, "orcid": "0000-0001-9808-7172" } ] }, "title": "Using EPR To Compare PEG-branch-nitroxide \"Bivalent-Brush Polymers\" and Traditional PEG Bottle\u2013Brush Polymers: Branching Makes a Difference", "ispublished": "pub", "full_text_status": "public", "note": "\u00a9 2012 American Chemical Society. \n\nPublished In Issue October 23, 2012; Article ASAP: October 04, 2012; Received: September 06, 2012.\n\nPublished - ma301874d.pdf
Supplemental Material - ma301874d_si_001.pdf
", "abstract": "Attachment of poly(ethylene glycol) (PEG) to polymeric nanostructures is a general strategy for sterically shielding and imparting water solubility to hydrophobic payloads. In this report, we describe direct graft-through polymerization of branched, multifunctional macromonomers that possess a PEG domain and a hydrophobic nitroxide domain. Electron paramagnetic resonance (EPR) spectroscopy was used to characterize microenvironments within these novel nanostructures. Comparisons were made to nitroxide-labeled, traditional bottle-brush random and block copolymers. Our results demonstrate that bivalent bottle-brush polymers have greater microstructural homogeneity compared to random copolymers of similar composition. Furthermore, we found that compared to a traditional brush polymer, the branched-brush, \"pseudo-alternating\" microstructure provided more rotational freedom to core-bound nitroxides, and greater steric shielding from external reagents. The results will impact further development of multivalent bottle-brush materials as nanoscaffolds for biological applications.", "date": "2012-10-23", "date_type": "published", "publication": "Macromolecules", "volume": "45", "number": "20", "publisher": "American Chemical Society", "pagerange": "8310-8318", "id_number": "CaltechAUTHORS:20121126-103324858", "issn": "0024-9297", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20121126-103324858", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "doi": "10.1021/ma301874d", "primary_object": { "basename": "ma301874d.pdf", "url": "https://authors.library.caltech.edu/records/6v4kh-2nk94/files/ma301874d.pdf" }, "related_objects": [ { "basename": "ma301874d_si_001.pdf", "url": "https://authors.library.caltech.edu/records/6v4kh-2nk94/files/ma301874d_si_001.pdf" } ], "resource_type": "article", "pub_year": "2012", "author_list": "Burts, Alan O.; Li, Yongjun; et el." }, { "id": "https://authors.library.caltech.edu/records/hs99x-hpg63", "eprint_id": 35339, "eprint_status": "archive", "datestamp": "2023-08-22 06:55:49", "lastmod": "2023-10-20 16:07:25", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Capelo-H-L", "name": { "family": "Capelo", "given": "Holly L." } }, { "id": "Herbst-W", "name": { "family": "Herbst", "given": "William" } }, { "id": "Leggett-S-K", "name": { "family": "Leggett", "given": "S. K." } }, { "id": "Hamilton-C-M", "name": { "family": "Hamilton", "given": "Catrina M." } }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John A." }, "orcid": "0000-0001-9808-7172" } ] }, "title": "Locating the Trailing Edge of the Circumbinary Ring in the KH 15D System", "ispublished": "pub", "full_text_status": "public", "keywords": "binaries: close; circumstellar matter; planetary systems; protoplanetary disks", "note": "\u00a9 2012 American Astronomical Society.\n\nReceived 2012 July 23; accepted 2012 August 24; published 2012 September 7.\n\nWe thank Geoff Marcy for helping to arrange the Keck/HIRES observations. We are grateful to the observers and\npersonnel at the SMARTS and GNIRS facilities. This work was\npartially supported by a NASA grant to W.H. through the Origins of Solar Systems program. Based on observations obtained at theGemini Observatory via queue program GN-2010B-Q-52. Gemini is operated by the Association of Universities for Research in Astronomy, Inc., under an agreement with the NSF on behalf of the Gemini partnership: the National Science Foundation (U.S.), the Science and Technology Facilities Council (U.K.), the National Research Council (Canada), CONICYT (Chile), the Australian Research Council (Australia), Minist\u00e9rio da Ci\u00eancia, Tecnologia e Inova\u00e7\u00e3o (Brazil), and Ministerio de Ciencia, and Tecnolog\u00eda e Innovaci\u00f3n Productiva (Argentina).\n\nPublished - 2041-8205_757_1_L18.pdf
", "abstract": "Following two years of complete occultation of both stars in the binary T Tauri star KH 15D by its opaque circumbinary ring, KH 15D has abruptly brightened again during apastron phases, reaching I = 15 mag. Here, we show that the brightening is accompanied by a change in spectral class from K6/K7 (the spectral class of star A) to ~K1, and a bluing of the system in V \u2013 I by about 0.3 mag. A radial velocity measurement confirms that, at apastron, we are now seeing direct light from star B, which is more luminous and of earlier spectral class than star A. Evidently, the trailing edge of the occulting screen has just become tangent to one anse of star B's projected orbit. This confirms a prediction of the precession models, supports the view that the tilted ring is self-gravitating, and ushers in a new era of the system's evolution that should be accompanied by the same kind of dramatic phenomena observed from 1995 to 2009. It also promotes KH 15D from a single-lined to a double-lined eclipsing binary, greatly enhancing its value for testing pre-main-sequence models. The results of our study strengthen the case for truncation of the outer ring at around 4 AU by a sub-stellar object such as an extremely young giant planet. The system is currently at an optimal configuration for detecting the putative planet and we urge expedient follow-up observations.", "date": "2012-09-20", "date_type": "published", "publication": "Astrophysical Journal Letters", "volume": "757", "number": "1", "publisher": "American Astronomical Society", "pagerange": "Art. No. L18", "id_number": "CaltechAUTHORS:20121107-143529964", "issn": "2041-8205", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20121107-143529964", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA Origins of Solar Systems program" } ] }, "doi": "10.1088/2041-8205/757/1/L18", "primary_object": { "basename": "2041-8205_757_1_L18.pdf", "url": "https://authors.library.caltech.edu/records/hs99x-hpg63/files/2041-8205_757_1_L18.pdf" }, "resource_type": "article", "pub_year": "2012", "author_list": "Capelo, Holly L.; Herbst, William; et el." }, { "id": "https://authors.library.caltech.edu/records/nz7ys-sjx81", "eprint_id": 78426, "eprint_status": "archive", "datestamp": "2023-08-19 12:49:52", "lastmod": "2023-10-26 00:05:28", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Albrecht-S", "name": { "family": "Albrecht", "given": "Simon" } }, { "id": "Winn-J-N", "name": { "family": "Winn", "given": "Joshua N." }, "orcid": "0000-0002-4265-047X" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John A." }, "orcid": "0000-0001-9808-7172" }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "Andrew W." }, "orcid": "0000-0001-8638-0320" }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "Geoffrey W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Butler-R-P", "name": { "family": "Butler", "given": "R. Paul" } }, { "id": "Arriagada-P", "name": { "family": "Arriagada", "given": "Pamela" } }, { "id": "Crane-J-D", "name": { "family": "Crane", "given": "Jeffrey D." } }, { "id": "Shectman-S-A", "name": { "family": "Shectman", "given": "Stephen A." } }, { "id": "Thompson-I-B", "name": { "family": "Thompson", "given": "Ian B." } }, { "id": "Hirano-Teruyuki", "name": { "family": "Hirano", "given": "Teruyuki" }, "orcid": "0000-0003-3618-7535" }, { "id": "Bakos-G-\u00c1", "name": { "family": "Bakos", "given": "Gaspar" }, "orcid": "0000-0001-7204-6727" }, { "id": "Hartman-J-D", "name": { "family": "Hartman", "given": "Joel D." }, "orcid": "0000-0001-8732-6166" } ] }, "title": "Obliquities of Hot Jupiter host stars: Evidence for tidal interactions and primordial misalignments", "ispublished": "pub", "full_text_status": "public", "keywords": "planetary systems \u2013 planets and satellites: formation \u2013 planet\u2013star interactions \u2013 stars: rotation \u2013 techniques: spectroscopic", "note": "\u00a9 2012 The American Astronomical Society. \n\nReceived 2012 April 19; accepted 2012 July 18; published 2012 August 30. \n\nThe data presented herein were collected with the Magellan (Clay) Telescope located at Las Campanas Observatory, Chile, and the Keck I telescope at the W. M. Keck Observatory, which is operated as a scientific partnership among the California Institute of Technology, the University of California, and the National Aeronautics and Space Administration. \n\nThe authors are grateful to Nevin Weinberg, Dan Fabrycky, Smadar Naoz, Amaury Triaud, and Ren\u00e9 Heller for comments on the manuscript. Work by S.A. and J.N.W. was supported by NASA Origins award NNX09AB33G and NSF grant No. 1108595. G.B. and J.H. acknowledge the support from grants NSF AST-1108686 and NASA NNX09AB29G. T.H. is supported by Japan Society for Promotion of Science (JSPS) Fellowship for Research (DC1: 22-5935). This research has made use of the following web resources: simbad.u-strasbg.fr, adswww.harvard.edu, arxiv.org. The W. M. Keck Observatory is operated as a scientific partnership among the California Institute of Technology, the University of California, and the National Aeronautics and Space Administration, and was made possible by the generous financial support of the W. M. Keck Foundation. We extend special thanks to those of Hawaiian ancestry on whose sacred mountain of Mauna Kea we are privileged to be guests.\n\nPublished - Albrecht_2012_ApJ_757_18.pdf
Submitted - 1206.6105.pdf
", "abstract": "We provide evidence that the obliquities of stars with close-in giant planets were initially nearly random, and that the low obliquities that are often observed are a consequence of star-planet tidal interactions. The evidence is based on 14 new measurements of the Rossiter-McLaughlin effect (for the systems HAT-P-6, HAT-P-7, HAT-P-16, HAT-P-24, HAT-P-32, HAT-P-34, WASP-12, WASP-16, WASP-18, WASP-19, WASP-26, WASP-31, Gl 436, and Kepler-8), as well as a critical review of previous observations. The low-obliquity (well-aligned) systems are those for which the expected tidal timescale is short, and likewise the high-obliquity (misaligned and retrograde) systems are those for which the expected timescale is long. At face value, this finding indicates that the origin of hot Jupiters involves dynamical interactions like planet-planet interactions or the Kozai effect that tilt their orbits rather than inspiraling due to interaction with a protoplanetary disk. We discuss the status of this hypothesis and the observations that are needed for a more definitive conclusion.", "date": "2012-09-20", "date_type": "published", "publication": "Astrophysical Journal", "volume": "757", "number": "1", "publisher": "American Astronomical Society", "pagerange": "Art. No. 18", "id_number": "CaltechAUTHORS:20170621-142439774", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20170621-142439774", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNX09AB33G" }, { "agency": "NSF", "grant_number": "AST-1108595" }, { "agency": "NSF", "grant_number": "AST-1108686" }, { "agency": "NASA", "grant_number": "NNX09AB29G" }, { "agency": "Japan Society for Promotion of Science (JSPS)", "grant_number": "DC1: 22-5935" }, { "agency": "W. M. Keck Foundation" }, { "agency": "Alfred P. Sloan Foundation" } ] }, "doi": "10.1088/0004-637X/757/1/18", "primary_object": { "basename": "1206.6105.pdf", "url": "https://authors.library.caltech.edu/records/nz7ys-sjx81/files/1206.6105.pdf" }, "related_objects": [ { "basename": "Albrecht_2012_ApJ_757_18.pdf", "url": "https://authors.library.caltech.edu/records/nz7ys-sjx81/files/Albrecht_2012_ApJ_757_18.pdf" } ], "resource_type": "article", "pub_year": "2012", "author_list": "Albrecht, Simon; Winn, Joshua N.; et el." }, { "id": "https://authors.library.caltech.edu/records/gfbr3-krg06", "eprint_id": 35213, "eprint_status": "archive", "datestamp": "2023-08-22 06:51:39", "lastmod": "2023-10-20 15:51:24", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Dawson-R-I", "name": { "family": "Dawson", "given": "Rebekah I." }, "orcid": "0000-0001-9677-1296" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" } ] }, "title": "The Photoeccentric Effect and Proto-hot Jupiters. I. Measuring Photometric Eccentricities of Individual Transiting Planets", "ispublished": "pub", "full_text_status": "public", "keywords": "planetary systems; techniques: photometric", "note": "\u00a9 2012 American Astronomical Society.\n\nReceived 2012 April 5; accepted 2012 July 9; published 2012 August 21.\n\nWe are thankful for the helpful and positive feedback from the anonymous referee. R.I.D. gratefully acknowledges support by the National Science Foundation Graduate Research Fellowship under grant DGE-1144152, clear and constant guidance from chapter Winn (2010), and the ministry and fellowship of the Bayesian Book Club. J.A.J. thanks Avi Loeb and the ITC for hosting him as part of their visitors program, thereby allowing the authors to work together in close proximity at the CfA during the completion of this work. We thank Sarah Ballard, Zachory Berta, Joshua Carter, Courtney Dressing, Subo Dong, Daniel Fabrycky, Jonathan Irwin, Boaz Katz, David Kipping, Timothy Morton, Norman Murray, Ruth Murray-Clay, Peter Plavchan, Gregory Snyder, Aristotle Socrates, and Joshua Winn for helpful discussions. Several colleagues provided helpful and inspiring comments on a manuscript draft: Joshua Carter (who, in addition to other helpful comments, suggested the procedure described in Section 3.4), Daniel Fabrycky, Eric Ford, David Kipping, and Ruth Murray-Clay. Special thanks to J. Zachary Gazak for helpful modifications to the TAP code. This paper includes data collected by the Kepler mission. Funding for the Kepler mission is provided by the NASA Science Mission directorate. Some of the data presented in this paper were obtained from the Multimission Archive at the Space Telescope Science Institute (MAST). STScI is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contractNAS5-26555. Support for MAST for non-HST data is provided by the NASA Office of Space Science viagrant NNX09AF08G and by other grants and contracts. This research has made use of the Exoplanet Orbit Database and the Exoplanet Data Explorer at http://www.exoplanets.org.\n\nPublished - 0004-637X_756_2_122.pdf
", "abstract": "Exoplanet orbital eccentricities offer valuable clues about the history of planetary systems. Eccentric, Jupiter-sized planets are particularly interesting: they may link the \"cold\" Jupiters beyond the ice line to close-in hot Jupiters, which are unlikely to have formed in situ. To date, eccentricities of individual transiting planets primarily come from radial-velocity measurements. Kepler has discovered hundreds of transiting Jupiters spanning a range of periods, but the faintness of the host stars precludes radial-velocity follow-up of most. Here, we demonstrate a Bayesian method of measuring an individual planet's eccentricity solely from its transit light curve using prior knowledge of its host star's density. We show that eccentric Jupiters are readily identified by their short ingress/egress/total transit durations\u2014part of the \"photoeccentric\" light curve signature of a planet's eccentricity\u2014even with long-cadence Kepler photometry and loosely constrained stellar parameters. A Markov Chain Monte Carlo exploration of parameter posteriors naturally marginalizes over the periapse angle and automatically accounts for the transit probability. To demonstrate, we use three published transit light curves of HD 17156 b to measure an eccentricity of e = 0.71^(+0.16)_(\u20130.09), in good agreement with the discovery value e = 0.67 \u00b1 0.08 based on 33 radial-velocity measurements. We present two additional tests using Kepler data. In each case, the technique proves to be a viable method of measuring exoplanet eccentricities and their confidence intervals. Finally, we argue that this method is the most efficient, effective means of identifying the extremely eccentric, proto-hot Jupiters predicted by Socrates et al.", "date": "2012-09-10", "date_type": "published", "publication": "Astrophysical Journal", "volume": "756", "number": "2", "publisher": "American Astronomical Society", "pagerange": "Art. No. 122", "id_number": "CaltechAUTHORS:20121031-140139243", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20121031-140139243", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NSF Graduate Research Fellowship", "grant_number": "DGE-1144152" } ] }, "doi": "10.1088/0004-637X/756/2/122", "primary_object": { "basename": "0004-637X_756_2_122.pdf", "url": "https://authors.library.caltech.edu/records/gfbr3-krg06/files/0004-637X_756_2_122.pdf" }, "resource_type": "article", "pub_year": "2012", "author_list": "Dawson, Rebekah I. and Johnson, John Asher" }, { "id": "https://authors.library.caltech.edu/records/by4dq-njg38", "eprint_id": 35330, "eprint_status": "archive", "datestamp": "2023-08-22 06:20:14", "lastmod": "2023-10-20 16:06:57", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Howard-A-W", "name": { "family": "Howard", "given": "Andrew W." }, "orcid": "0000-0001-8638-0320" }, { "id": "Ciardi-D-R", "name": { "family": "Ciardi", "given": "David" }, "orcid": "0000-0002-5741-3047" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" } ] }, "title": "Planet Occurrence within 0.25 AU of Solar-type Stars from Kepler", "ispublished": "pub", "full_text_status": "public", "keywords": "planetary systems; stars: statistics; techniques: photometric", "note": "\u00a9 2012 American Astronomical Society. \n\nReceived 2011 March 16; accepted 2012 May 8; published 2012 June 25. \n\nBased in part on observations obtained at the W. M. Keck Observatory,\nwhich is operated by the University of California and the California Institute of\nTechnology.\nWe thank E. Chiang and H. Knutson for helpful conversations.\nWe gratefully acknowledge D. Monet and many other members\nof the Kepler team. We thank the W. M. Keck Observatory,\nand both NASA and the University of California for the use\nof the Keck telescope. We are grateful to the Keck technical\nstaff, especially S. Dahm, H. Tran, and G. Hill for the support of Keck instrumentation, and R. Kibrick, G.Wirth, R. Goodrich for the support of remote observing.We extend special thanks to those of Hawaiian ancestry on whose sacred mountain of Mauna Kea we are privileged to be guests. G.M. acknowledges NASA grant NNX06AH52G. J.C.-D. acknowledges support from the National Center for Atmospheric Research, which is sponsored by the National Science Foundation. Funding for the Kepler Discovery mission is provided by NASA's Science Mission\nDirectorate.\n\nPublished - 0067-0049_201_2_15.pdf
", "abstract": "We report the distribution of planets as a function of planet radius, orbital period, and stellar effective temperature for orbital periods less than 50 days around solar-type (GK) stars. These results are based on the 1235 planets (formally \"planet candidates\") from the Kepler mission that include a nearly complete set of detected planets as small as 2 R_\u2295. For each of the 156,000 target stars, we assess the detectability of planets as a function of planet radius, R_p, and orbital period, P, using a measure of the detection efficiency for each star. We also correct for the geometric probability of transit, R_*/a. We consider first Kepler target stars within the \"solar subset\" having T_eff = 4100-6100 K, log g = 4.0-4.9, and Kepler magnitude K_p < 15 mag, i.e., bright, main-sequence GK stars. We include only those stars having photometric noise low enough to permit detection of planets down to 2 R_\u2295. We count planets in small domains of R_p and P and divide by the included target stars to calculate planet occurrence in each domain. The resulting occurrence of planets varies by more than three orders of magnitude in the radius-orbital period plane and increases substantially down to the smallest radius (2 R_\u2295) and out to the longest orbital period (50 days, ~0.25 AU) in our study. For P < 50 days, the distribution of planet radii is given by a power law, df/dlog R = k_(R)R^\u03b1 with k_R = 2.9^(+0.5)_(\u20130.4), \u03b1 = \u20131.92 \u00b1 0.11, and R \u2261 R_p/R_\u2295. This rapid increase in planet occurrence with decreasing planet size agrees with the prediction of core-accretion formation but disagrees with population synthesis models that predict a desert at super-Earth and Neptune sizes for close-in orbits. Planets with orbital periods shorter than 2 days are extremely rare; for R_p > 2 R_\u2295 we measure an occurrence of less than 0.001 planets per star. For all planets with orbital periods less than 50 days, we measure occurrence of 0.130 \u00b1 0.008, 0.023 \u00b1 0.003, and 0.013 \u00b1 0.002 planets per star for planets with radii 2-4, 4-8, and 8-32 R_\u2295, in agreement with Doppler surveys. We fit occurrence as a function of P to a power-law model with an exponential cutoff below a critical period P_0. For smaller planets, P_0 has larger values, suggesting that the \"parking distance\" for migrating planets moves outward with decreasing planet size. We also measured planet occurrence over a broader stellar T_eff range of 3600-7100 K, spanning M0 to F2 dwarfs. Over this range, the occurrence of 2-4 R_\u2295 planets in the Kepler field increases with decreasing T_eff, with these small planets being seven times more abundant around cool stars (3600-4100 K) than the hottest stars in our sample (6600-7100 K).", "date": "2012-08", "date_type": "published", "publication": "Astrophysical Journal Supplement Series", "volume": "201", "number": "2", "publisher": "American Astronomical Society", "pagerange": "Art. No. 15", "id_number": "CaltechAUTHORS:20121107-110242929", "issn": "0067-0049", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20121107-110242929", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNX06AH52G" } ] }, "local_group": { "items": [ { "id": "Infrared-Processing-and-Analysis-Center-(IPAC)" } ] }, "doi": "10.1088/0067-0049/201/2/15", "primary_object": { "basename": "0067-0049_201_2_15.pdf", "url": "https://authors.library.caltech.edu/records/by4dq-njg38/files/0067-0049_201_2_15.pdf" }, "resource_type": "article", "pub_year": "2012", "author_list": "Howard, Andrew W.; Ciardi, David; et el." }, { "id": "https://authors.library.caltech.edu/records/nvqpf-cwf07", "eprint_id": 32825, "eprint_status": "archive", "datestamp": "2023-08-22 06:11:14", "lastmod": "2023-10-18 16:20:53", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Wright-J-T", "name": { "family": "Wright", "given": "J. T." }, "orcid": "0000-0001-6160-5888" }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "G. W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "A. W." }, "orcid": "0000-0001-8638-0320" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" }, { "id": "Morton-T-D", "name": { "family": "Morton", "given": "T. D." }, "orcid": "0000-0002-8537-5711" }, { "id": "Fischer-D-A", "name": { "family": "Fischer", "given": "D. A." }, "orcid": "0000-0003-2221-0861" } ] }, "title": "The Frequency of Hot Jupiters Orbiting nearby Solar-type Stars", "ispublished": "pub", "full_text_status": "public", "keywords": "planetary systems; techniques: radial velocities", "note": "\u00a9 2012 American Astronomical Society. Received 2011 December 27; accepted 2012 May 10; published 2012 June 25. \nBased on observations obtained at the W. M. Keck Observatory, which is\noperated jointly by the University of California and the California Institute of\nTechnology.\nThis work was partially supported by funding from the Center\nfor Exoplanets and Habitable Worlds, which is supported by the\nPennsylvania State University, the Eberly College of Science,\nand the Pennsylvania Space Grant Consortium.\nThe work herein is based on observations obtained at the\nW. M. Keck Observatory, which is operated jointly by the University\nof California and the California Institute of Technology.\nThe Keck Observatory was made possible by the generous financial\nsupport of the W. M. Keck Foundation. We wish to\nrecognize and acknowledge the very significant cultural role\nand reverence that the summit of Mauna Kea has always had\nwithin the indigenous Hawaiian community. We are most fortunate\nto have the opportunity to conduct observations from this\nmountain.\nThis research has made use of the Exoplanet Orbit Database\nand the Exoplanet Data Explorer at exoplanets.org.\nFacility: Keck:I\n\nPublished - Wright2012p18991Astrophys_J.pdf
Submitted - 1205.2273.pdf
", "abstract": "We determine the fraction of F, G, and K dwarfs in the solar neighborhood hosting hot Jupiters as measured by the California Planet Survey from the Lick and Keck planet searches. We find the rate to be 1.2% \u00b1 0.38%, which is consistent with the rate reported by Mayor et al. from the HARPS and CORALIE radial velocity (RV) surveys. These numbers are more than double the rate reported by Howard et al. for Kepler stars and the rate of Gould et al. from the OGLE-III transit search; however, due to small number statistics these differences are of only marginal statistical significance. We explore some of the difficulties in estimating this rate from the existing RV data sets and comparing RV rates to rates from other techniques.", "date": "2012-07-10", "date_type": "published", "publication": "Astrophysical Journal", "volume": "753", "number": "2", "publisher": "American Astronomical Society", "pagerange": "Art. No. 160", "id_number": "CaltechAUTHORS:20120801-073313835", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20120801-073313835", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "Center for Exoplanets and Habitable Worlds" }, { "agency": "Pennsylvania State University" }, { "agency": "Eberly College of Science" }, { "agency": "Pennsylvania Space Grant Consortium" }, { "agency": "W. M. Keck Foundation" } ] }, "doi": "10.1088/0004-637X/753/2/160", "primary_object": { "basename": "1205.2273.pdf", "url": "https://authors.library.caltech.edu/records/nvqpf-cwf07/files/1205.2273.pdf" }, "related_objects": [ { "basename": "Wright2012p18991Astrophys_J.pdf", "url": "https://authors.library.caltech.edu/records/nvqpf-cwf07/files/Wright2012p18991Astrophys_J.pdf" } ], "resource_type": "article", "pub_year": "2012", "author_list": "Wright, J. T.; Marcy, G. W.; et el." }, { "id": "https://authors.library.caltech.edu/records/0exjd-r5v53", "eprint_id": 32475, "eprint_status": "archive", "datestamp": "2023-08-22 06:02:18", "lastmod": "2023-10-18 14:27:01", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Bakos-G-\u00c1", "name": { "family": "Bakos", "given": "G. \u00c1." }, "orcid": "0000-0001-7204-6727" }, { "id": "Hartman-J-D", "name": { "family": "Hartman", "given": "J. D." }, "orcid": "0000-0001-8732-6166" }, { "id": "Torres-G", "name": { "family": "Torres", "given": "G." }, "orcid": "0000-0002-5286-0251" }, { "id": "B\u00e9ky-B", "name": { "family": "B\u00e9ky", "given": "B." } }, { "id": "Latham-D-W", "name": { "family": "Latham", "given": "D. W." }, "orcid": "0000-0001-9911-7388" }, { "id": "Buchhave-L-A", "name": { "family": "Buchhave", "given": "L. A." }, "orcid": "0000-0003-1605-5666" }, { "id": "Csubry-Z", "name": { "family": "Csubry", "given": "Z." } }, { "id": "Kov\u00e1cs-G", "name": { "family": "Kov\u00e1cs", "given": "G." } }, { "id": "Bieryla-A", "name": { "family": "Bieryla", "given": "A." }, "orcid": "0000-0001-6637-5401" }, { "id": "Quinn-S-N", "name": { "family": "Quinn", "given": "S." }, "orcid": "0000-0002-8964-8377" }, { "id": "Szklen\u00e1r-T", "name": { "family": "Szklen\u00e1r", "given": "T." } }, { "id": "Esquerdo-G-A", "name": { "family": "Esquerdo", "given": "G. A." }, "orcid": "0000-0002-9789-5474" }, { "id": "Shporer-A", "name": { "family": "Shporer", "given": "A." }, "orcid": "0000-0002-1836-3120" }, { "id": "Noyes-R-W", "name": { "family": "Noyes", "given": "R. W." } }, { "id": "Fischer-D-A", "name": { "family": "Fischer", "given": "D. A." }, "orcid": "0000-0003-2221-0861" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "J. A." }, "orcid": "0000-0001-9808-7172" }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "A. W." }, "orcid": "0000-0001-8638-0320" }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "G. W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Sato-Bun'ei", "name": { "family": "Sato", "given": "B." } }, { "id": "Penev-K", "name": { "family": "Penev", "given": "K." }, "orcid": "0000-0003-4464-1371" }, { "id": "Everett-M-E", "name": { "family": "Everett", "given": "M." }, "orcid": "0000-0002-0885-7215" }, { "id": "Sasselov-D-D", "name": { "family": "Sasselov", "given": "D. D." }, "orcid": "0000-0001-7014-1771" }, { "id": "F\u0171r\u00e9sz-G", "name": { "family": "F\u0171r\u00e9sz", "given": "G." } }, { "id": "Stefanik-R-P", "name": { "family": "Stefanik", "given": "R. P." } }, { "id": "L\u00e1z\u00e1r-J", "name": { "family": "L\u00e1z\u00e1r", "given": "J." } }, { "id": "Papp-I", "name": { "family": "Papp", "given": "I." } }, { "id": "S\u00e1ri-P", "name": { "family": "S\u00e1ri", "given": "P." } } ] }, "title": "HAT-P-34b-HAT-P-37b: Four Transiting Planets More Massive than Jupiter Orbiting Moderately Bright Stars", "ispublished": "pub", "full_text_status": "public", "keywords": "planetary systems; stars: individual (HAT-P-34, GSC 1622-01261, HAT-P-35, GSC 0203-01079, HAT-P-36); techniques: photometric; techniques: spectroscopic", "note": "\u00a9 2012 The American Astronomical Society.\nReceived 2011 December 23; accepted 2012 April 13; published 2012 June 11.\n\nBased in part on observations obtained at the W. M. Keck Observatory, which is operated by the University of California and the California Institute of Technology. Keck time has been granted by NOAO (A289Hr) and NASA (N167Hr and N029Hr). Based in part on data collected at the Subaru Telescope, which is operated by the National Astronomical Observatory of Japan. Based in part on observations made with the Nordic Optical Telescope, operated on the island of La Palma jointly by Denmark, Finland, Iceland, Norway, and Sweden, in the Spanish Observatorio del Roque de los Muchachos of the Instituto de Astrofisica de Canarias. HATNet operations have been funded by NASA grants NNG04GN74G and NNX08AF23G. We acknowledge partial funding of the HATNet follow-up effort from NSF AST-1108686. We acknowledge partial support also from the Keple rMission under NASA Cooperative Agreement NCC2-1390 (D.W.L. and PI). G.K. thanks the Hungarian Scientific Research Foundation (OTKA) for support through grant K-81373. This research has made use of Keck telescope time granted through NOAO (program A289Hr) and NASA (N167Hr and N029Hr). This paper uses observations obtained with facilities of the Las Cumbres Observatory Global Telescope. Data presented in this paper are based on observations obtained at the HAT station at the Submillimeter Array of SAO, and HAT station at the Fred Lawrence Whipple Observatory of SAO. The authors recognize and acknowledge the very significant cultural role and reverence that the summit of Mauna Kea has always had within the indigenous Hawaiian community. We are most fortunate to have the opportunity to conduct observations from this mountain.\n\nPublished - Bakos2012p18826Astron_J.pdf
", "abstract": "We report the discovery of four transiting extrasolar planets (HAT-P-34b\u2013HAT-P-37b) with masses ranging from\n1.05 to 3.33 M_J and periods from 1.33 to 5.45 days. These planets orbit relatively bright F and G dwarf stars (from\nV = 10.16 to V = 13.2). Of particular interest is HAT-P-34b which is moderately massive (3.33 M_J), has a high\neccentricity of e = 0.441 \u00b1 0.032 at a period of P = 5.452654 \u00b1 0.000016 days, and shows hints of an outer\ncomponent. The other three planets have properties that are typical of hot Jupiters.", "date": "2012-07", "date_type": "published", "publication": "Astronomical Journal", "volume": "144", "number": "1", "publisher": "American Astronomical Society", "pagerange": "Art. No. 19", "id_number": "CaltechAUTHORS:20120716-123121129", "issn": "0004-6256", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20120716-123121129", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNG04GN74G" }, { "agency": "NASA", "grant_number": "NNX08AF23G" }, { "agency": "NSF", "grant_number": "AST-1108686" }, { "agency": "NASA", "grant_number": "NCC2-1390" }, { "agency": "Hungarian Scientific Research Foundation (OTKA)", "grant_number": "K-81373" } ] }, "doi": "10.1088/0004-6256/144/1/19", "primary_object": { "basename": "Bakos2012p18826Astron_J.pdf", "url": "https://authors.library.caltech.edu/records/0exjd-r5v53/files/Bakos2012p18826Astron_J.pdf" }, "resource_type": "article", "pub_year": "2012", "author_list": "Bakos, G. \u00c1.; Hartman, J. D.; et el." }, { "id": "https://authors.library.caltech.edu/records/jmats-8dd78", "eprint_id": 31970, "eprint_status": "archive", "datestamp": "2023-08-22 05:52:41", "lastmod": "2023-10-17 21:44:32", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Crepp-J-R", "name": { "family": "Crepp", "given": "Justin R." }, "orcid": "0000-0003-0800-0593" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" }, { "id": "Fischer-D-A", "name": { "family": "Fischer", "given": "Debra A." }, "orcid": "0000-0003-2221-0861" }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "Andrew W." }, "orcid": "0000-0001-8638-0320" }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "Geoffrey W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Wright-J-T", "name": { "family": "Wright", "given": "Jason T." }, "orcid": "0000-0001-6160-5888" }, { "id": "Isaacson-H-T", "name": { "family": "Isaacson", "given": "Howard" }, "orcid": "0000-0002-0531-1073" }, { "id": "Boyajian-T-S", "name": { "family": "Boyajian", "given": "Tabetha" }, "orcid": "0000-0001-9879-9313" }, { "id": "von-Braun-K", "name": { "family": "von Braun", "given": "Kaspar" }, "orcid": "0000-0002-5823-4630" }, { "id": "Hillenbrand-L-A", "name": { "family": "Hillenbrand", "given": "Lynne A." } }, { "id": "Hinkley-S", "name": { "family": "Hinkley", "given": "Sasha" }, "orcid": "0000-0001-8074-2562" }, { "id": "Carpenter-J-M", "name": { "family": "Carpenter", "given": "John M." }, "orcid": "0000-0003-2251-0602" }, { "id": "Brewer-J-M-Astro", "name": { "family": "Brewer", "given": "John M." }, "orcid": "0000-0002-9873-1471" } ] }, "title": "The Dynamical Mass and Three-dimensional Orbit of HR7672B: A Benchmark Brown Dwarf with High Eccentricity", "ispublished": "pub", "full_text_status": "public", "keywords": "astrometry; brown dwarfs; techniques: high angular resolution; techniques: interferometric; techniques: spectroscopic", "note": "\u00a9 2012 American Astronomical Society. \n\nReceived 2011 September 25; accepted 2012 March 19; published 2012 May 10. \n\nWe thank Brendan Bowler for drawing our attention to the VLT archival images of HR7672 taken with NACO in 2007 September, Dimitri Mawet for help interpreting the archival data, and Randy Campbell for assisting with observations during our 2011 May astrometric measurement with NIRC2. Trent Dupuy, Brendan Bowler, and the anonymous referee provided helpful suggestions that improved the quality of the paper. We also thank R. Paul Butler, Chris McCarthy, and Steve Vogt for making many of the early RV observations. We thank the University of California for the use of Lick Observatory, including both the Coude Auxiliary Telescope and the 3 m. A large portion of the data presented herein were obtained at the W. M. Keck Observatory, which is operated as a scientific partnership among the California Institute of Technology, the University of California and the National Aeronautics and Space Administration. The Observatory was made possible by the generous financial support of the W. M. Keck Foundation. We acknowledge usage of the ESO scientific archive for providing complementary astrometric data from the VLT. This research made use of the SIMBAD literature database, operated at CDS, Strasbourg, France, and of NASA's Astrophysics Data System. This publication makes use of data products from the Two Micron All Sky Survey, which is a joint project of the University of Massachusetts and the Infrared Processing and Analysis Center/California Institute of Technology, funded by the National Aeronautics and Space Administration and the National Science Foundation. This research made use of the NASA/IPAC/NExScI Star and Exoplanet Database, which is operated by the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration. T.S.B. acknowledges support provided by NASA through Hubble Fellowship grant HST-HF-51252.01 awarded by the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., for NASA, under contract NAS 5-26555. The CHARA Array is funded by the National Science Foundation through NSF grants AST-0606958 and AST-0908253 and by Georgia State University through the College of Arts and Sciences, the W. M. Keck Foundation, the Packard Foundation, and the NASA Exoplanet Science Institute.\n\nPublished - Crepp2012p18537Astrophys_J.pdf
", "abstract": "The companion to the G0V star HR7672 directly imaged by Liu et al. has moved measurably along its orbit since the discovery epoch, making it possible to determine its dynamical properties. Originally targeted with adaptive optics because it showed a long-term radial velocity (RV) acceleration (trend), we have monitored this star with precise Doppler measurements and have now established a 24 year time baseline. The RV variations show significant curvature (change in the acceleration) including an inflection point. We have also obtained a recent image of HR7672B with NIRC2 at Keck. The astrometry also shows curvature. In this paper, we use jointly fitted Doppler and astrometric models to calculate the three-dimensional orbit and dynamical mass of the companion. The mass of the host star is determined using a direct radius measurement from CHARA interferometry in combination with high-resolution spectroscopic modeling. We find that HR7672B has a highly eccentric, e = 0.50^(+0.01)_(\u20130.01), near edge-on, i = 97.3^(+0.4)_(\u20130.5) deg, orbit with semimajor axis, \u0251 = 18.3^(+0.4)_(\u20130.5) AU. The mass of the companion is m = 68.7^(+2.4)_(\u20133.1) M_J . HR7672B thus resides near the substellar boundary, just below the hydrogen-fusing limit. These measurements of the companion mass are independent of its brightness and spectrum and establish HR7672B as a rare and precious \"benchmark\" brown dwarf with a well-determined mass, age, and metallicity essential for testing theoretical evolutionary models and synthetic spectral models. Indeed, we find that such models under-predict its luminosity by a factor of \u22482. HR 7672B is presently the only L, T, or Y dwarf known to produce an RV trend around a solar-type star.", "date": "2012-06-01", "date_type": "published", "publication": "Astrophysical Journal", "volume": "751", "number": "2", "publisher": "American Astronomical Society", "pagerange": "Art. No. 97", "id_number": "CaltechAUTHORS:20120620-083814725", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20120620-083814725", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "W. M. Keck Foundation" }, { "agency": "NASA Hubble Fellowship", "grant_number": "HST-HF-51252.01" }, { "agency": "NASA", "grant_number": "NAS 5-26555" }, { "agency": "NSF", "grant_number": "AST-0606958" }, { "agency": "NSF", "grant_number": "AST-0908253" }, { "agency": "Georgia State University" }, { "agency": "David and Lucile Packard Foundation" } ] }, "local_group": { "items": [ { "id": "Infrared-Processing-and-Analysis-Center-(IPAC)" } ] }, "doi": "10.1088/0004-637X/751/2/97", "primary_object": { "basename": "Crepp2012p18537Astrophys_J.pdf", "url": "https://authors.library.caltech.edu/records/jmats-8dd78/files/Crepp2012p18537Astrophys_J.pdf" }, "resource_type": "article", "pub_year": "2012", "author_list": "Crepp, Justin R.; Johnson, John Asher; et el." }, { "id": "https://authors.library.caltech.edu/records/jdynb-hk364", "eprint_id": 32835, "eprint_status": "archive", "datestamp": "2023-08-19 11:07:54", "lastmod": "2023-10-18 16:21:41", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Anglada-Escud\u00e9-G", "name": { "family": "Anglada-Escud\u00e9", "given": "Guillem" }, "orcid": "0000-0002-3645-5977" }, { "id": "Plavchan-P", "name": { "family": "Plavchan", "given": "Peter" }, "orcid": "0000-0002-8864-1667" }, { "id": "Mills-S-M", "name": { "family": "Mills", "given": "Sean" }, "orcid": "0000-0002-4535-6241" }, { "id": "Gao-Peter", "name": { "family": "Gao", "given": "Peter" }, "orcid": "0000-0002-8518-9601" }, { "id": "Garc\u00eda-Berr\u00edos-E", "name": { "family": "Garc\u00eda-Berr\u00edos", "given": "Edgardo" } }, { "id": "Lewis-N-S", "name": { "family": "Lewis", "given": "Nathan S." }, "orcid": "0000-0001-5245-0538" }, { "id": "Sung-Keeyoon", "name": { "family": "Sung", "given": "Keeyoon" } }, { "id": "Ciardi-D-R", "name": { "family": "Ciardi", "given": "David" }, "orcid": "0000-0002-5741-3047" }, { "id": "Beichman-C-A", "name": { "family": "Beichman", "given": "Chas" }, "orcid": "0000-0002-5627-5471" }, { "id": "Brinkworth-C-S", "name": { "family": "Brinkworth", "given": "Carolyn" } }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John" }, "orcid": "0000-0001-9808-7172" }, { "id": "Davisson-C", "name": { "family": "Davison", "given": "Cassy" } }, { "id": "White-R-J", "name": { "family": "White", "given": "Russel" }, "orcid": "0000-0001-5313-7498" }, { "id": "Prato-L", "name": { "family": "Prato", "given": "Lisa" } } ] }, "title": "Design and Construction of Absorption Cells for Precision Radial Velocities in the K Band Using Methane Isotopologues", "ispublished": "pub", "full_text_status": "public", "keywords": "Exoplanets", "note": "\u00a9 2012 The Astronomical Society of the Pacific.\n\nReceived 2011 August 18; accepted 2012 April 24; published 2012 May 22.\n\nBoth G. Anglada-Escud\u00e9 and P. Plavchan contributed equally\nto this work. G. A. would like to acknowledge the Carnegie\nPostdoctoral Fellowship Program and the support provided by\nthe NASA Astrobiology Institute grant NNA09DA81A. Peter\nPlavchan would like acknowledge Wes Traub and Stephen Unwin\nfor funding provided by the Jet Propulsion Laboratory's\n(JPL's) Center for Exoplanet Science and NASA Exoplanet\nScience Institute. K. Sung acknowledges the Planetary Atmospheric Research Program to support the laboratory spectroscopic calibrations. Part of the research at the JPL and California Institute of Technology was performed under contracts with National Aeronautics and Space Administration. We thank Anu Dudhia for making the Reference Forward Model code available to us and for his assistance with adapting it for gas cell spectral calculations. The stellar synthetic spectra were graciously\nprovided by Peter Hauschildt (University of\nHamburg) and the PHOENIX group. We also thank Linda\nBrown from JPL's Laboratory Studies and Modeling group\nand Pin Chen from the Planetary Chemistry and Astrobiology\ngroup for their advice and support using the Fourier-transformed infrared spectrometer. We would like to thank Paul Butler (Carnegie Institution of Washington) and Gilian Nave (NIST) for their advice in gas optimization parameters and molecular spectroscopy in general. We would like to thank Stephen Kane (NExScI), Kaspar von Braun (NExScI), and Steve Osterman (University of Colorado) for their valuable discussions. We also thank John Rayner, Morgan Bonnet, George Koenig, and Alan Tokunaga from IfA, Hawaii, for their support during the CSHELL/IRTF cell design review, integration, and commissioning. We thank Rick Gerhart (California Institute of Technology), Scot Howell (Mindrum Precision), and Thurston Levy (Glass Instruments, Inc.) for their work in helping construct and fill the gas cells, as well as Joeff Zolkower (California Institute of Technology) for mechanical engineering advise.\n\nPublished - AngladaEscude2012p18966Publ_Astron_Soc_Pac.pdf
", "abstract": "We present a method to optimize absorption cells for precise wavelength calibration in the near-infrared. We apply it to design and optimize methane isotopologue cells for precision radial velocity measurements in the K band. We also describe the construction and installation of two such cells for the CSHELL spectrograph at NASA's IRTF. We have obtained their high-resolution laboratory spectra, which we can then use in precision radial velocity measurements and which can also have other applications. In terms of obtainable RV precision, methane should outperform other proposed cells, such as the ammonia cell (^(14)NH_3) recently demonstrated on CRIRES/VLT. The laboratory spectra of the ammonia and methane cells show strong absorption features in the H band that could also be exploited for precision Doppler measurements. We present spectra and preliminary radial velocity measurements obtained during our first-light run. These initial results show that a precision down to 20-30 m s^(-1)can be obtained using a wavelength interval of only 5 nm in the K band and S/N \u223c 150. This supports the prediction that a precision down to a few meters per second can be achieved on late-M dwarfs using the new generation of NIR spectrographs, thus enabling the detection of terrestrial planets in their habitable zones. Doppler measurements in the NIR can also be used to mitigate the radial velocity jitter due to stellar activity, enabling more efficient surveys on young active stars.", "date": "2012-06", "date_type": "published", "publication": "Publications of the Astronomical Society of the Pacific", "volume": "124", "number": "916", "publisher": "Astronomical Society of the Pacific", "pagerange": "586-597", "id_number": "CaltechAUTHORS:20120801-111847565", "issn": "0004-6280", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20120801-111847565", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "Carnegie Trust" }, { "agency": "NASA", "grant_number": "NNA09DA81A" }, { "agency": "JPL" } ] }, "local_group": { "items": [ { "id": "Infrared-Processing-and-Analysis-Center-(IPAC)" } ] }, "doi": "10.1086/666489", "primary_object": { "basename": "AngladaEscude2012p18966Publ_Astron_Soc_Pac.pdf", "url": "https://authors.library.caltech.edu/records/jdynb-hk364/files/AngladaEscude2012p18966Publ_Astron_Soc_Pac.pdf" }, "resource_type": "article", "pub_year": "2012", "author_list": "Anglada-Escud\u00e9, Guillem; Plavchan, Peter; et el." }, { "id": "https://authors.library.caltech.edu/records/49jeb-9n292", "eprint_id": 31482, "eprint_status": "archive", "datestamp": "2023-08-22 05:32:17", "lastmod": "2023-10-17 16:37:09", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" }, { "id": "Gazak-J-Z", "name": { "family": "Gazak", "given": "J. Zachary" } }, { "id": "Apps-K", "name": { "family": "Apps", "given": "Kevin" } }, { "id": "Muirhead-P-S", "name": { "family": "Muirhead", "given": "Philip S." }, "orcid": "0000-0002-0638-8822" }, { "id": "Crepp-J-R", "name": { "family": "Crepp", "given": "Justin R." }, "orcid": "0000-0003-0800-0593" }, { "id": "Crossfield-I-J-M", "name": { "family": "Crossfield", "given": "Ian J. M." }, "orcid": "0000-0002-1835-1891" }, { "id": "Boyajian-T-S", "name": { "family": "Boyajian", "given": "Tabetha" }, "orcid": "0000-0001-9879-9313" }, { "id": "von-Braun-K", "name": { "family": "von Braun", "given": "Kaspar" }, "orcid": "0000-0002-5823-4630" }, { "id": "Rojas-Ayala-B", "name": { "family": "Rojas-Ayala", "given": "Barbara" } }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "Andrew W." }, "orcid": "0000-0001-8638-0320" }, { "id": "Covey-K-R", "name": { "family": "Covey", "given": "Kevin R." }, "orcid": "0000-0001-6914-7797" }, { "id": "Schlawin-E", "name": { "family": "Schlawin", "given": "Everett" } }, { "id": "Hamren-K-M", "name": { "family": "Hamren", "given": "Katherine" } }, { "id": "Morton-T-D", "name": { "family": "Morton", "given": "Timothy D." }, "orcid": "0000-0002-8537-5711" }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "Geoffrey W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Lloyd-J-P", "name": { "family": "Lloyd", "given": "James P." } } ] }, "title": "Characterization the Cool KOIs. II. The M Dwarf KOI-254 and its Hot Jupiter", "ispublished": "pub", "full_text_status": "public", "keywords": "planetary systems; techniques: photometric; techniques: radial velocities; techniques: spectroscopic", "note": "\u00a9 2012 American Astronomical Society. \n\nReceived 2011 December 22; accepted 2012 February 29; published 2012 April 4. \n\nBased on observations obtained at the W. M. Keck Observatory, which is operated jointly by the University of California and the California Institute of Technology. Keck time has been granted by Caltech, the University of California and NASA. We gratefully acknowledge the efforts and dedication of the Keck Observatory staff, especially Grant Hill, Scott Dahm, and Hien Tran for their support of HIRES and Greg Wirth for support of remote observing. A.W. H. gratefully acknowledges support from a Townes Post-doctoral Fellowship at the U. C. Berkeley Space Sciences Laboratory. T. S. B. and K. R. C. acknowledge support provided by NASA through Hubble Fellowship grants HST-HF-51252.01 awarded by the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., for NASA, under contracts NAS 5-26555 and NAS 5-26555, respectively. We made use of the SIMBAD database operated at CDS, Strasbourg, France, and NASA's Astrophysics Data System Bibliographic Services. Finally, we extend special thanks to those of Hawaiian ancestry on whose sacred mountain of Mauna Kea we are privileged to be guests. Without their generous hospitality, the Keck observations presented herein would not have been possible.\n\nPublished - Johnson2012p18125Astron_J.pdf
Submitted - 1112.0017.pdf
", "abstract": "We report the confirmation and characterization of a transiting gas giant planet orbiting the M dwarf KOI-254 every 2.455239 days, which was originally discovered by the Kepler mission. We use radial velocity measurements, adaptive optics imaging, and near-infrared spectroscopy to confirm the planetary nature of the transit events. KOI-254 b is the first hot Jupiter discovered around an M-type dwarf star. We also present a new model-independent method of using broadband photometry to estimate the mass and metallicity of an M dwarf without relying on a direct distance measurement. Included in this methodology is a new photometric metallicity calibration based on J \u2013 K colors. We use this technique to measure the physical properties of KOI-254 and its planet. We measure a planet mass of M_P = 0.505 M_(Jup), radius R_P = 0.96 R_(Jup), and semimajor axis a = 0.030 AU, based on our measured stellar mass M_* = 0.59 M_\u2609 and radius R_* = 0.55 R_\u2609. We also find that the host star is metal-rich, which is consistent with the sample of M-type stars known to harbor giant planets.", "date": "2012-05", "date_type": "published", "publication": "Astronomical Journal", "volume": "143", "number": "5", "publisher": "American Astronomical Society", "pagerange": "Art. No. 111", "id_number": "CaltechAUTHORS:20120515-153434137", "issn": "0004-6256", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20120515-153434137", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "University of California, Berkeley" }, { "agency": "NASA Hubble Fellowship", "grant_number": "HST-HF-51235.01" }, { "agency": "NASA", "grant_number": "NAS 5-26555" } ] }, "doi": "10.1088/0004-6256/143/5/111", "primary_object": { "basename": "Johnson2012p18125Astron_J.pdf", "url": "https://authors.library.caltech.edu/records/49jeb-9n292/files/Johnson2012p18125Astron_J.pdf" }, "related_objects": [ { "basename": "1112.0017.pdf", "url": "https://authors.library.caltech.edu/records/49jeb-9n292/files/1112.0017.pdf" } ], "resource_type": "article", "pub_year": "2012", "author_list": "Johnson, John Asher; Gazak, J. Zachary; et el." }, { "id": "https://authors.library.caltech.edu/records/1q6yf-g6618", "eprint_id": 31477, "eprint_status": "archive", "datestamp": "2023-08-22 05:19:47", "lastmod": "2023-10-17 16:36:59", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Howard-A-W", "name": { "family": "Howard", "given": "A. W." }, "orcid": "0000-0001-8638-0320" }, { "id": "Bakos-G-\u00c1", "name": { "family": "Bakos", "given": "G. \u00c1." }, "orcid": "0000-0001-7204-6727" }, { "id": "Hartman-J", "name": { "family": "Hartman", "given": "J." } }, { "id": "Torres-G", "name": { "family": "Torres", "given": "G." }, "orcid": "0000-0002-5286-0251" }, { "id": "Shporer-A", "name": { "family": "Shporer", "given": "A." }, "orcid": "0000-0002-1836-3120" }, { "id": "Mazeh-T", "name": { "family": "Mazeh", "given": "T." } }, { "id": "Kov\u00e1cs-G", "name": { "family": "Kov\u00e1cs", "given": "G\u00e9za" } }, { "id": "Latham-D-W", "name": { "family": "Latham", "given": "D. W." }, "orcid": "0000-0001-9911-7388" }, { "id": "Noyes-R-W", "name": { "family": "Noyes", "given": "R. W." } }, { "id": "Fischer-D-A", "name": { "family": "Fischer", "given": "D. A." }, "orcid": "0000-0003-2221-0861" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "J. A." }, "orcid": "0000-0001-9808-7172" }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "G. W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Esquerdo-G-A", "name": { "family": "Esquerdo", "given": "G. A." }, "orcid": "0000-0002-9789-5474" }, { "id": "B\u00e9ky-B", "name": { "family": "B\u00e9ky", "given": "B." } }, { "id": "Butler-R-P", "name": { "family": "Butler", "given": "R. P." } }, { "id": "Sasselov-D-D", "name": { "family": "Sasselov", "given": "D. D." }, "orcid": "0000-0001-7014-1771" }, { "id": "Stefanik-R-P", "name": { "family": "Stefanik", "given": "R. P." } }, { "id": "Perumpilly-G", "name": { "family": "Perumpilly", "given": "G." } }, { "id": "L\u00e1z\u00e1r-J", "name": { "family": "L\u00e1z\u00e1r", "given": "J." } }, { "id": "Papp-I", "name": { "family": "Papp", "given": "I." } }, { "id": "S\u00e1ri-P", "name": { "family": "S\u00e1ri", "given": "P." } } ] }, "title": "HAT-P-17b,c: A Transiting, Eccentric, Hot Saturn and a Long-period, Cold Jupiter", "ispublished": "pub", "full_text_status": "public", "keywords": "planetary systems; stars: individual (HAT-P-17, GSC 2717-00417); techniques: photometric; techniques: spectroscopic", "note": "\u00a9 2012 American Astronomical Society. Received 2010 August 24; accepted 2011 August 23; published 2012 April 2. \n\nBased in part on observations obtained at the W. M. Keck Observatory, which is operated by the University of California and the California Institute of Technology. Keck time has been granted by NOAO and NASA. We thank E. Agol, H. Knutson, J. Winn, and J. Wright for helpful conversations. HATNet operations have been funded by NASA grants NNG04GN74G, NNX08AF23G, and SAO IR&D grants. A.W.H. gratefully acknowledges support from a Townes Post-doctoral Fellowship at the U. C. Berkeley Space Sciences Laboratory. Work of G. \u00c1. B. and J. Johnson were supported by the Postdoctoral Fellowship of the NSF Astronomy and Astrophysics Program (AST-0702843 and AST-0702821, respectively). G.T. acknowledges partial support from NASA grant NNX09AF59G. We acknowledge partial support also from the Kepler mission under NASA Cooperative Agreement NCC2-1390 (D.W.L.: PI). G.K. thanks the Hungarian Scientific Research Foundation (OTKA) for support through grant K-81373. T.M. acknowledges the Israel Science Foundation (grant 655/07). This research has made use of Keck telescope time granted through NOAO and NASA. We thank Ezra Mashal for his help in operating the Wise-HAT telescope over the past years. We thank the TLC project (M. Holman and J. Winn) for swapping time on the 1.2 m telescope at short notice. This research has made use of the Exoplanet Orbit Database and the Exoplanet Data Explorer at exoplanets.org, the SIMBAD database (operated at CDS, Strasbourg, France), and NASA's Astrophysics Data System Bibliographic Services. Finally, the authors wish to extend special thanks to those of Hawaiian ancestry on whose sacred mountain of Mauna Kea we were privileged to be guests. Without their generous hospitality, the Keck observations presented herein would not have been possible.\n\nPublished - Howard2012p18120Astrophys_J.pdf
", "abstract": "We report the discovery of HAT-P-17b,c, a multi-planet system with an inner transiting planet in a short-period, eccentric orbit and an outer planet in a 4.4 yr, nearly circular orbit. The inner planet, HAT-P-17b, transits the bright V = 10.54 early K dwarf star GSC 2717-00417, with an orbital period P = 10.338523 \u00b1 0.000009 days, orbital eccentricity e = 0.342 \u00b1 0.006, transit epoch T_c = 2454801.16943 \u00b1 0.00020 (BJD: barycentric Julian dates throughout the paper are calculated from Coordinated Universal Time (UTC)), and transit duration 0.1690 \u00b1 0.0009 days. HAT-P-17b has a mass of 0.534 \u00b1 0.018 M_J and radius of 1.010 \u00b1 0.029 R_J yielding a mean density of 0.64 \u00b1 0.05 g cm^(\u20133). This planet has a relatively low equilibrium temperature in the range 780-927 K, making it an attractive target for follow-up spectroscopic studies. The outer planet, HAT-P-17c, has a significantly longer orbital period P_2 = 1610 \u00b1 20 days and a minimum mass m_2sini_2 = 1.31^(+0.18)_(\u20130.15) M_J. The orbital inclination of HAT-P-17c is unknown as transits have not been observed and may not be present. The host star has a mass of 0.86 \u00b1 0.04 M_\u2609, radius of 0.84 \u00b1 0.02 R_\u2609, effective temperature 5246 \u00b1 80 K, and metallicity [Fe/H] = 0.00 \u00b1 0.08. HAT-P-17 is the second multi-planet system detected from ground-based transit surveys.", "date": "2012-04", "date_type": "published", "publication": "Astrophysical Journal", "volume": "749", "number": "2", "publisher": "American Astronomical Society", "pagerange": "Art. No. 134", "id_number": "CaltechAUTHORS:20120515-143255518", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20120515-143255518", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNG04GN74G" }, { "agency": "NASA", "grant_number": "NNX08AF23G" }, { "agency": "Smithsonian Astrophysical Observatory" }, { "agency": "UC Berkeley Space Sciences Laboratory Townes Fellowship" }, { "agency": "NSF Astronomy and Astrophysics Fellowship", "grant_number": "AST-0702843" }, { "agency": "NSF Astronomy and Astrophysics Fellowship", "grant_number": "AST-0702821" }, { "agency": "NASA", "grant_number": "NNX09AF59G" }, { "agency": "NASA", "grant_number": "NCC2-1390" }, { "agency": "Hungarian Scientific Research Foundation (OTKA)", "grant_number": "K-81373" }, { "agency": "Israel Science Foundation", "grant_number": "655/07" }, { "agency": "chin" }, { "agency": "National Optical Astronomy Observatory (NOAO)" } ] }, "doi": "10.1088/0004-637X/749/2/134", "primary_object": { "basename": "Howard2012p18120Astrophys_J.pdf", "url": "https://authors.library.caltech.edu/records/1q6yf-g6618/files/Howard2012p18120Astrophys_J.pdf" }, "resource_type": "article", "pub_year": "2012", "author_list": "Howard, A. W.; Bakos, G. \u00c1.; et el." }, { "id": "https://authors.library.caltech.edu/records/1v3ez-zcd57", "eprint_id": 28905, "eprint_status": "archive", "datestamp": "2023-08-19 10:15:15", "lastmod": "2023-10-24 18:13:49", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Muirhead-P-S", "name": { "family": "Muirhead", "given": "Philip S." }, "orcid": "0000-0002-0638-8822" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" }, { "id": "Morton-T-D", "name": { "family": "Morton", "given": "Timothy D." }, "orcid": "0000-0002-8537-5711" }, { "id": "Pineda-J-S", "name": { "family": "Pineda", "given": "J. Sebastian" }, "orcid": "0000-0002-4489-0135" }, { "id": "Bottom-M", "name": { "family": "Bottom", "given": "Michael" }, "orcid": "0000-0003-1341-5531" }, { "id": "Crepp-J-R", "name": { "family": "Crepp", "given": "Justin R." }, "orcid": "0000-0003-0800-0593" }, { "id": "Kirby-E-N", "name": { "family": "Kirby", "given": "Evan N." }, "orcid": "0000-0001-6196-5162" }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "Andrew W." }, "orcid": "0000-0001-8638-0320" }, { "id": "Levitan-D-B", "name": { "family": "Levitan", "given": "David" } }, { "id": "D\u00edaz-Santos-T", "name": { "family": "D\u00edaz-Santos", "given": "Tanio" }, "orcid": "0000-0003-0699-6083" }, { "id": "Armus-L", "name": { "family": "Armus", "given": "Lee" }, "orcid": "0000-0003-3498-2973" } ] }, "title": "Characterizing the Cool KOIs. III. KOI-961: A Small Star with Large Proper Motion and Three Small Planets", "ispublished": "pub", "full_text_status": "public", "keywords": "Stars: individual (Barnard's Star, KOI 961) \u2014 Stars: low-mass \u2014 Stars: funda-\nmental parameters \u2014 Stars: late-type \u2014 Planetary Systems", "note": "We would like to thank Peter Dawson, who provided\nthe multi-wavelength spectrum of Barnard's Star. We\nwould like to thank Sarah Ballard and Michael Line for\nthe thoughtful discussions concerning the paper. We\nwould like to thank Bruce Gary of Hereford Arizona Observatory for taking the B,V and RC photometric measurements of KOI 961.\nThis work includes observations taken at the Palomar\nObervatory 200-inch Hale Telescope granted by Cornell\nUniversity. The TripleSpec spectrograph was built at\nCornell and delivered to Palomar as part of the Cornell-\nCaltech-Palomar arrangement. This work includes observations taken at the W. M. Keck Observatory and\nPalomar Observatory granted by the California Institute\nof Technology. Some of the Palomar 200-inch Telescope\ntime was provided by NASA/JPL. We thank Melodie\nKao, Matthew Giguere and Ming Zhao for assisting with\nthe Keck observations.\nJ.A.C, K.R.C., D.C.F. and E.N.K. acknowledge support for this work from the Hubble Fellowship Pro-\ngram, provided by NASA through Hubble Fellowship grants HF-51267.01-A, HST-HF-51253.01-A, HF-\n51272.01-A and HST-HF-51256.01-A, awarded by the\nSpace Telescope Science Institute, which is operated by the AURA, Inc., for NASA, under contract NAS 5-26555.\nK.G.S., J.P. and L.H. acknowledge support through the Vanderbilt Initiative in Data-intensive Astrophysics and NSF grants AST-0849736 and AST-1009810.\nThis paper includes data collected by the Kepler mission. Funding for the Kepler mission is provided by the\nNASA Science Mission directorate. Some of the data \npresented in this paper were obtained from the Multimission Archive at the Space Telescope Science Institute\n(MAST). STScI is operated by the Association of Universities for Research in Astronomy, Inc., under NASA\ncontract NAS5-26555. Support for MAST for non-HST\ndata is provided by the NASA Office of Space Science via\ngrant NNX09AF08G and by other grants and contracts.\nThe United Kingdom Infrared Telescope (UKIRT) is\noperated by the Joint Astronomy Centre on behalf of the\nScience and Technology Facilities Council of the U.K.\nThe Digitized Sky Surveys were produced at the Space\nTelescope Science Institute under U.S. Government grant\nNAG W-2166. The images of these surveys are based on\nphotographic data obtained using the Oschin Schmidt\nTelescope on Palomar Mountain and the UK Schmidt\nTelescope. The plates were processed into the present\ncompressed digital form with the permission of these institutions.\nThe National Geographic Society - Palomar Observatory Sky Atlas (POSS-I) was made by the California\nInstitute of Technology with grants from the National\nGeographic Society. The Second Palomar Observatory\nSky Survey (POSS-II) was made by the California Institute of Technology with funds from the National Science Foundation, the National Geographic Society, the\nSloan Foundation, the Samuel Oschin Foundation, and\nthe Eastman Kodak Corporation. The Oschin Schmidt\nTelescope is operated by the California Institute of Technology and Palomar Observatory.\n\nPublished - 0004-637X_747_2_144.pdf
", "abstract": "We present the characterization of the star KOI 961, an M dwarf with transit signals indicative of three short-period exoplanets, originally discovered by the Kepler Mission. We proceed by comparing KOI 961 to Barnard's Star, a nearby, well-characterized mid-M dwarf. By comparing colors, optical and near-infrared spectra, we find remarkable agreement between the two, implying similar effective temperatures and metallicities. Both are metal-poor compared to the Solar neighborhood, have low projected rotational velocity, high absolute radial velocity, large proper motion and no quiescent H-alpha emission--all of which is consistent with being old M dwarfs. We combine empirical measurements of Barnard's Star and expectations from evolutionary isochrones to estimate KOI 961's mass (0.13 \u00b1 0.05 M_\u2299), radius (0.17 \u00b1 0.04 R_\u2299) and luminosity (2.40 x 10^(-3.0 \u00b1 0.3) L_\u2299). We calculate KOI 961's distance (38.7 \u00b1 6.3 pc) and space motions, which, like Barnard's Star, are consistent with a high scale-height population in the Milky Way. We perform an independent multi-transit fit to the public Kepler light curve and significantly revise the transit parameters for the three planets. We calculate the false-positive probability for each planet-candidate, and find a less than 1% chance that any one of the transiting signals is due to a background or hierarchical eclipsing binary, validating the planetary nature of the transits. The best-fitting radii for all three planets are less than 1 Re_\u2295, with KOI 961.03 being Mars-sized (Rp = 0.57 \u00b1 0.18 R_\u2295), and they represent some of the smallest exoplanets detected to date.", "date": "2012-03-10", "date_type": "published", "publication": "Astrophysical Journal", "volume": "747", "number": "2", "publisher": "American Astronomical Society", "pagerange": "Art. no. 144", "id_number": "CaltechAUTHORS:20120123-084606565", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20120123-084606565", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA Hubble Fellowship", "grant_number": "HF-51267.01-A" }, { "agency": "NASA Hubble Fellowship", "grant_number": "HF-51253.01-A" }, { "agency": "NASA Hubble Fellowship", "grant_number": "HF-51272.01-A" }, { "agency": "NASA Hubble Fellowship", "grant_number": "HF-51256.01-A" }, { "agency": "Vanderbilt Initiative in Data-intensive Astrophysics" }, { "agency": "NSF", "grant_number": "AST-0849736" }, { "agency": "NSF", "grant_number": "AST-1009810" } ] }, "local_group": { "items": [ { "id": "Space-Radiation-Laboratory" }, { "id": "Infrared-Processing-and-Analysis-Center-(IPAC)" } ] }, "doi": "10.1088/0004-637X/747/2/144", "primary_object": { "basename": "0004-637X_747_2_144.pdf", "url": "https://authors.library.caltech.edu/records/1v3ez-zcd57/files/0004-637X_747_2_144.pdf" }, "resource_type": "article", "pub_year": "2012", "author_list": "Muirhead, Philip S.; Johnson, John Asher; et el." }, { "id": "https://authors.library.caltech.edu/records/1zpgk-wrz20", "eprint_id": 29968, "eprint_status": "archive", "datestamp": "2023-08-22 04:45:39", "lastmod": "2023-10-24 22:37:57", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Quinn-S-N", "name": { "family": "Quinn", "given": "S. N." }, "orcid": "0000-0002-8964-8377" }, { "id": "Bakos-G-\u00c1", "name": { "family": "Bakos", "given": "G. \u00c1." }, "orcid": "0000-0001-7204-6727" }, { "id": "Hartman-J", "name": { "family": "Hartmann", "given": "J." } }, { "id": "Torres-G", "name": { "family": "Torres", "given": "G." }, "orcid": "0000-0002-5286-0251" }, { "id": "Kov\u00e1cs-G", "name": { "family": "Kov\u00e1cs", "given": "G." } }, { "id": "Latham-D-W", "name": { "family": "Latham", "given": "D. W." }, "orcid": "0000-0001-9911-7388" }, { "id": "Noyes-R-W", "name": { "family": "Noyes", "given": "R. W." } }, { "id": "Fischer-D-A", "name": { "family": "Fischer", "given": "D. A." }, "orcid": "0000-0003-2221-0861" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "J. A." }, "orcid": "0000-0001-9808-7172" }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "G. W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "A. W." }, "orcid": "0000-0001-8638-0320" }, { "id": "Szentgyorgyi-A", "name": { "family": "Szentgyorgyi", "given": "A." } }, { "id": "F\u0171r\u00e9sz-G", "name": { "family": "F\u0171r\u00e9sz", "given": "G." } }, { "id": "Buchhave-L-A", "name": { "family": "Buchhave", "given": "L. A." }, "orcid": "0000-0003-1605-5666" }, { "id": "B\u00e9ky-B", "name": { "family": "B\u00e9ky", "given": "B." } }, { "id": "Sasselov-D-D", "name": { "family": "Sasselov", "given": "D. D." }, "orcid": "0000-0001-7014-1771" }, { "id": "Stefanik-R-P", "name": { "family": "Stefanik", "given": "R. P." } }, { "id": "Perumpilly-G", "name": { "family": "Perumpilly", "given": "G." } }, { "id": "Everett-M-E", "name": { "family": "Everett", "given": "M." }, "orcid": "0000-0002-0885-7215" }, { "id": "L\u00e1z\u00e1r-J", "name": { "family": "L\u00e1z\u00e1r", "given": "J." } }, { "id": "Papp-I", "name": { "family": "Papp", "given": "I." } }, { "id": "S\u00e1ri-P", "name": { "family": "S\u00e1ri", "given": "P." } } ] }, "title": "Hat-P-25b: A Hot-Jupiter Transiting a Moderately Faint G Star", "ispublished": "pub", "full_text_status": "public", "keywords": "planetary systems; stars: individual (HAT-P-25, GSC 1788-01237); techniques: photometric; techniques: spectroscopic", "note": "\u00a9 2012 American Astronomical Society. Received 2010 August 20; accepted 2011 November 4; published 2011 December 29. \nBased in part on observations obtained at the W. M. Keck Observatory,\nwhich is operated by the University of California and the California Institute of\nTechnology. Keck time has been granted by NOAO (A201Hr), NASA\n(N018Hr and N167Hr), and the NASA Gemini-Keck time-exchange program\n(G329Hr). Based in part on observations made with the Nordic Optical\nTelescope, operated on the island of La Palma jointly by Denmark, Finland,\nIceland, Norway, and Sweden, in the Spanish Observatorio del Roque de los\nMuchachos of the Instituto de Astrofisica de Canarias.\nHATNet operations have been funded by NASA grants NNG04GN74G, NNX08AF23G, and SAO IR&D grants. Work of G.\u00c1.B. and J. Johnson were supported by the Postdoctoral Fellowship of the NSF Astronomy and Astrophysics Program (AST-0702843 and AST-0702821, respectively). G.T. acknowledges\npartial support from NASA grant NNX09AF59G. We acknowledge\npartial support also from the Kepler Mission under\nNASA Cooperative Agreement NCC2-1390 (PI: D.W. Latham).\nG.K. thanks the Hungarian Scientific Research Foundation\n(OTKA) for support through grant K-81373. This research has made use of Keck telescope time granted through NOAO\n(A201Hr), NASA (N018Hr and N167Hr), and the NASA\nGemini-Keck time-exchange program (G329Hr). This research\nhas also made use of the NASA/IPAC Infrared Science Archive,\nwhich is operated by the Jet Propulsion Laboratory, California\nInstitute of Technology, under contract with the National Aeronautics and Space Administration.\n\nPublished - Quinn2012p17612Astrophys_J.pdf
", "abstract": "We report the discovery of HAT-P-25b, a transiting extrasolar planet orbiting the V = 13.19 G5 dwarf star GSC 1788-01237, with a period P = 3.652836 \u00b1 0.000019 days, transit epoch T_c = 2455176.85173 \u00b1 0.00047 (BJD\u2014barycentric Julian dates throughout the paper are calculated from Coordinated Universal Time, UTC), and transit duration 0.1174 \u00b1 0.0017 days. The host star has a mass of 1.01 \u00b1 0.03 M_\u2609, radius of 0.96^(+0.05)_(\u2013 0.04) R_\u2609, effective temperature 5500 \u00b1 80 K, and metallicity [Fe/H] = +0.31 \u00b1 0.08. The planetary companion has a mass of 0.567 \u00b1 0.022 M_J and radius of 1.190^(+0.081)_(\u20130.056) R_J yielding a mean density of 0.42 \u00b1 0.07 g cm^(\u20133).", "date": "2012-01-20", "date_type": "published", "publication": "Astrophysical Journal", "volume": "745", "number": "1", "publisher": "American Astronomical Society", "pagerange": "Art. No. 80", "id_number": "CaltechAUTHORS:20120404-072516851", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20120404-072516851", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNG04GN74G" }, { "agency": "NASA", "grant_number": "NNX08AF23G" }, { "agency": "Smithsonian Astrophysical Observatory" }, { "agency": "NSF Astronomy and Astrophysics Fellowship", "grant_number": "AST-0702843" }, { "agency": "NSF Astronomy and Astrophysics Fellowship", "grant_number": "AST-0702821" }, { "agency": "NASA", "grant_number": "NNX09AF59G" }, { "agency": "NASA", "grant_number": "NCC2-1390" }, { "agency": "Hungarian Scientific Research Foundation (OTKA)", "grant_number": "K-81373" }, { "agency": "National Optical Astronomy Observatory (NOAO)", "grant_number": "A201Hr" }, { "agency": "NASA", "grant_number": "N018Hr" }, { "agency": "NASA", "grant_number": "N167Hr" }, { "agency": "NASA", "grant_number": "G329Hr" }, { "agency": "NASA/JPL/Caltech" } ] }, "doi": "10.1088/0004-637X/745/1/80", "primary_object": { "basename": "Quinn2012p17612Astrophys_J.pdf", "url": "https://authors.library.caltech.edu/records/1zpgk-wrz20/files/Quinn2012p17612Astrophys_J.pdf" }, "resource_type": "article", "pub_year": "2012", "author_list": "Quinn, S. N.; Bakos, G. \u00c1.; et el." }, { "id": "https://authors.library.caltech.edu/records/bbgyv-cjp43", "eprint_id": 29935, "eprint_status": "archive", "datestamp": "2023-08-22 04:45:03", "lastmod": "2023-10-24 22:35:49", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Fischer-D-A", "name": { "family": "Fischer", "given": "Debra A." }, "orcid": "0000-0003-2221-0861" }, { "id": "Gaidos-E-J", "name": { "family": "Gaidos", "given": "Eric" }, "orcid": "0000-0002-5258-6846" }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "Andrew W." }, "orcid": "0000-0001-8638-0320" }, { "id": "Giguere-M-J", "name": { "family": "Giguere", "given": "Matthew J." } }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John A." }, "orcid": "0000-0001-9808-7172" }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "Geoffrey W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Wright-J-T", "name": { "family": "Wright", "given": "Jason T." }, "orcid": "0000-0001-6160-5888" }, { "id": "Valenti-J-A", "name": { "family": "Valenti", "given": "Jeff A." }, "orcid": "0000-0003-3305-6281" }, { "id": "Piskunov-N-E", "name": { "family": "Piskunov", "given": "Nikolai" } }, { "id": "Clubb-K-I", "name": { "family": "Clubb", "given": "Kelsey I." } }, { "id": "Isaacson-H-T", "name": { "family": "Isaacson", "given": "Howard" }, "orcid": "0000-0002-0531-1073" }, { "id": "Apps-K", "name": { "family": "Apps", "given": "Kevin" } }, { "id": "L\u00e9pine-S", "name": { "family": "L\u00e9pine", "given": "S\u00e9bastien" }, "orcid": "0000-0002-2437-2947" }, { "id": "Mann-A-W", "name": { "family": "Mann", "given": "Andrew W." }, "orcid": "0000-0003-3654-1602" }, { "id": "Moriarty-J", "name": { "family": "Moriarty", "given": "John" } }, { "id": "Brewer-J-M-Astro", "name": { "family": "Brewer", "given": "John" }, "orcid": "0000-0002-9873-1471" }, { "id": "Spronk-J", "name": { "family": "Spronck", "given": "Julien F. P." } }, { "id": "Schwab-C", "name": { "family": "Schwab", "given": "Christian" }, "orcid": "0000-0002-4046-987X" }, { "id": "Szymkowiak-A", "name": { "family": "Szymkowiak", "given": "Andrew" } } ] }, "title": "M2K. II. A Triple-Planet System Orbiting HIP 57274", "ispublished": "pub", "full_text_status": "public", "keywords": "planetary systems; stars: individual (HIP 57274)", "note": "\u00a9 2012 American Astronomical Society. Received 2011 September 5; accepted 2011 October 27; published 2011 December 28. \nBased on observations obtained at the Keck Observatory, which is operated\nby the University of California.\nWe gratefully acknowledge the dedication and support of the Keck Observatory staff, especially Grant Hill and Scott Dahm for support of HIRES and Greg Wirth for support of remote observing. D.A.F. acknowledges research support from NSF grant AST-1036283 and NASA grant NNX08AF42G.\nThis research has made use of the Exoplanet Orbit Database at\nexoplanets.org and NASAs ADS Bibliographic Services. Data\npresented herein were obtained at the W. M. Keck Observatory\nfrom telescope time allocated to Yale University and to\nthe National Aeronautics and Space Administration through the\nagency's scientific partnership with the California Institute of\nTechnology and the University of California and to the University\nof Hawaii. This research has made use of the SIMBAD\ndatabase, operated at CDS, Strasbourg, France, and of NASA's\nAstrophysics Data System Bibliographic Services. The Observatory\nwas made possible by the generous financial support of\nthe W. M. Keck Foundation. The authors wish to recognize and\nacknowledge the very significant cultural role and reverence \nthat the summit of Mauna Kea has always had within the indigenous Hawaiian community. We are most fortunate to have\nthe opportunity to conduct observations from this mountain.\n\nPublished - Fischer2012p17607Astrophys_J.pdf
Submitted - 1109.2926.pdf
", "abstract": "Doppler observations from Keck Observatory have revealed a triple-planet system orbiting the nearby K4V star, HIP 57274. The inner planet, HIP 57274b, is a super-Earth with Msin i = 11.6 M_\u2295 (0.036 M_(Jup)), an orbital period of 8.135 \u00b1 0.004 days, and slightly eccentric orbit e = 0.19 \u00b1 0.1. We calculate a transit probability of 6.5% for the inner planet. The second planet has Msin i = 0.4 M_(Jup) with an orbital period of 32.0 \u00b1 0.02 days in a nearly circular orbit (e = 0.05 \u00b1 0.03). The third planet has Msin i = 0.53 M _(Jup) with an orbital period of 432 \u00b1 8 days (1.18 years) and an eccentricity e = 0.23 \u00b1 0.03. This discovery adds to the number of super-Earth mass planets with M sin i < 12 M_\u2295 that have been detected with Doppler surveys. We find that 56% \u00b1 18% of super-Earths are members of multi-planet systems. This is certainly a lower limit because of observational detectability limits, yet significantly higher than the fraction of Jupiter mass exoplanets, 20% \u00b1 8%, that are members of Doppler-detected, multi-planet systems.", "date": "2012-01-20", "date_type": "published", "publication": "Astrophysical Journal", "volume": "745", "number": "1", "publisher": "American Astronomical Society", "pagerange": "Art. No. 21", "id_number": "CaltechAUTHORS:20120402-103849121", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20120402-103849121", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "Keck Observatory" }, { "agency": "NSF", "grant_number": "AST-1036283" }, { "agency": "NASA", "grant_number": "NNX08AF42G" }, { "agency": "W. M. Keck Foundation" } ] }, "doi": "10.1088/0004-637X/745/1/21", "primary_object": { "basename": "1109.2926.pdf", "url": "https://authors.library.caltech.edu/records/bbgyv-cjp43/files/1109.2926.pdf" }, "related_objects": [ { "basename": "Fischer2012p17607Astrophys_J.pdf", "url": "https://authors.library.caltech.edu/records/bbgyv-cjp43/files/Fischer2012p17607Astrophys_J.pdf" } ], "resource_type": "article", "pub_year": "2012", "author_list": "Fischer, Debra A.; Gaidos, Eric; et el." }, { "id": "https://authors.library.caltech.edu/records/50vdk-wxs30", "eprint_id": 28998, "eprint_status": "archive", "datestamp": "2023-08-22 04:40:39", "lastmod": "2023-10-24 18:18:00", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Giguere-M-J", "name": { "family": "Giguere", "given": "Matthew J." } }, { "id": "Fischer-D-A", "name": { "family": "Fischer", "given": "Debra A." }, "orcid": "0000-0003-2221-0861" }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "Andrew W." }, "orcid": "0000-0001-8638-0320" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John A." }, "orcid": "0000-0001-9808-7172" }, { "id": "Henry-G-W", "name": { "family": "Henry", "given": "Gregory W." }, "orcid": "0000-0003-4155-8513" }, { "id": "Wright-J-T", "name": { "family": "Wright", "given": "Jason T." }, "orcid": "0000-0001-6160-5888" }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "Geoffrey W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Isaacson-H-T", "name": { "family": "Isaacson", "given": "Howard T." }, "orcid": "0000-0002-0531-1073" }, { "id": "Hou-Fengii", "name": { "family": "Hou", "given": "Fengii" } }, { "id": "Spronck-J", "name": { "family": "Spronck", "given": "Julien" } } ] }, "title": "A High-eccentricity Component in the Double-planet System around HD 163607 and a Planet around HD 164509", "ispublished": "pub", "full_text_status": "public", "keywords": "planetary systems; stars: individual (HD 163607, HD 164509); techniques: photometric; techniques: radial velocities", "note": "\u00a9 2012 The American Astronomical Society. \n\nReceived 2010 December 17; accepted 2011 September 9; published 2011 December 7. \n\nBased on observations obtained at the W. M. Keck Observatory, which is operated by the University of California and the California Institute of Technology. Keck time has been granted by NOAO and NASA. We gratefully acknowledge the dedication and support of the Keck Observatory staff, in particular Grant Hill and Scott Dahm for their support with HIRES and Greg Wirth and Bob Kibrick for supporting remote observing. We thank the NASA Telescope assignment committees for generous allocations of telescope time. We thank the anonymous referee for useful comments and suggestions. Fischer acknowledges support from NASA Grant NNX08AF42G and NASA Keck PI data analysis funds. G.W.H. acknowledges support from NASA, NSF, Tennessee State University, and the State of Tennessee through its Centers of Excellence program. J.T.W. gratefully acknowledges the Center for Exoplanets and Habitable Worlds, supported by the Pennsylvania State University, the Eberly College of Science, and the Pennsylvania Space Grant Consortium. Data presented herein were obtained at the W. M. Keck Observatory from telescope time allocated to the National Aeronautics and Space Administration through the agency's scientific partnership with the California Institute of Technology and the University of California. The Observatory was made possible by the generous financial support of the W. M. Keck Foundation. The authors extend thanks to those of native Hawaiian ancestry on whose sacred mountain of Mauna Kea we are privileged to be guests. Without their generous hospitality, the Keck observations presented herein would not have been possible.\n\nPublished - Giguere2012p16871Astrophys_J.pdf
", "abstract": "We report the detection of three new exoplanets from Keck Observatory. HD 163607 is a metal-rich G5IV star with two planets. The inner planet has an observed orbital period of 75.29 \u00b1 0.02 days, a semi-amplitude of 51.1 \u00b1 1.4 m s^(\u20131), an eccentricity of 0.73 \u00b1 0.02, and a derived minimum mass of MP sin i = 0.77 \u00b1 0.02 M_(Jup). This is the largest eccentricity of any known planet in a multi-planet system. The argument of periastron passage is 78.7 \u00b1 2\u00b00; consequently, the planet's closest approach to its parent star is very near the line of sight, leading to a relatively high transit probability of 8%. The outer planet has an orbital period of 3.60 \u00b1 0.02 years, an orbital eccentricity of 0.12 \u00b1 0.06, and a semi-amplitude of 40.4 \u00b1 1.3 m s^(\u20131). The minimum mass is MP sin i = 2.29 \u00b1 0.16 M _(Jup). HD 164509 is a metal-rich G5V star with a planet in an orbital period of 282.4 \u00b1 3.8 days and an eccentricity of 0.26 \u00b1 0.14. The semi-amplitude of 14.2 \u00b1 2.7 m s^(\u20131) implies a minimum mass of 0.48 \u00b1 0.09 M_(Jup). The radial velocities (RVs) of HD 164509 also exhibit a residual linear trend of \u20135.1 \u00b1 0.7 m s\u20131 year\u20131, indicating the presence of an additional longer period companion in the system. Photometric observations demonstrate that HD 163607 and HD 164509 are constant in brightness to submillimagnitude levels on their RV periods. This provides strong support for planetary reflex motion as the cause of the RV variations.", "date": "2012-01-01", "date_type": "published", "publication": "Astrophysical Journal", "volume": "744", "number": "1", "publisher": "American Astronomical Society", "pagerange": "Art. No. 4", "id_number": "CaltechAUTHORS:20120127-103225828", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20120127-103225828", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNX08AF42G" }, { "agency": "NSF" }, { "agency": "Tennessee State University" }, { "agency": "State of Tennessee Centers of Excellence program" }, { "agency": "Center for Exoplanets and Habitable Worlds" }, { "agency": "Pennsylvania State University" }, { "agency": "Eberly College of Science" }, { "agency": "Pennsylvania Space Grant Consortium" } ] }, "doi": "10.1088/0004-637X/744/1/4", "primary_object": { "basename": "Giguere2012p16871Astrophys_J.pdf", "url": "https://authors.library.caltech.edu/records/50vdk-wxs30/files/Giguere2012p16871Astrophys_J.pdf" }, "resource_type": "article", "pub_year": "2012", "author_list": "Giguere, Matthew J.; Fischer, Debra A.; et el." }, { "id": "https://authors.library.caltech.edu/records/y71n5-kvf10", "eprint_id": 37020, "eprint_status": "archive", "datestamp": "2023-08-19 09:14:02", "lastmod": "2023-10-23 16:03:10", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Gazak-J-Z", "name": { "family": "Gazak", "given": "J. Zachary" } }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John A." }, "orcid": "0000-0001-9808-7172" }, { "id": "Tonry-J-L", "name": { "family": "Tonry", "given": "John" }, "orcid": "0000-0003-2858-9657" }, { "id": "Dragomir-D", "name": { "family": "Dragomir", "given": "Diana" }, "orcid": "0000-0003-2313-467X" }, { "id": "Eastman-J-D", "name": { "family": "Eastman", "given": "Jason" }, "orcid": "0000-0003-3773-5142" }, { "id": "Mann-A-W", "name": { "family": "Mann", "given": "Andrew W." }, "orcid": "0000-0003-3654-1602" }, { "id": "Agol-E", "name": { "family": "Agol", "given": "Eric" }, "orcid": "0000-0002-0802-9145" } ] }, "title": "Transit Analysis Package: An IDL Graphical User Interface for Exoplanet Transit Photometry", "ispublished": "pub", "full_text_status": "public", "note": "\u00a9 2012 J. Zachary Gazak et al. This is an open access article distributed under the Creative Commons Attribution\nLicense, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.\n\nReceived 26 September 2011; Accepted 19 February 2012.\n\nThe authors gratefully acknowledge discussions with Josh Carter relating to the new wavelet-based likelihood methods and David Kipping and G\u00e1sp\u00e1r Bakos for responding thoughtfully to questions regarding their independent analysis of Kepler-4b through -8b. They thank the individuals who provided helpful insight and comments regarding early versions of TAP, including especially John Rayner, Karen Collins, and Kaspar von Braun. J. A. Johnson was supported by the NSF Grant AST-0702821. A. W. Mann was supported by NSF grant AST-0908419. For this work the authors made use of the UH 2.2\u2009m telescope atop Mauna Kea. The authors wish to extend special thanks to those of Hawaiian ancestry on whose sacred mountain of Mauna Kea they are privileged to be guests. Without their generous hospitality, the observations presented herein would not have been possible.\n\nPublished - 697967.pdf
", "abstract": "We present an IDL graphical user-interface-driven software package designed for the analysis of exoplanet transit light curves. The Transit Analysis Package (TAP) software uses Markov Chain Monte Carlo (MCMC) techniques to fit light curves using the analytic model of Mandal and Agol (2002). The package incorporates a wavelet-based likelihood function developed by Carter and Winn (2009), which allows the MCMC to assess parameter uncertainties more robustly than classic X^2 methods by parameterizing uncorrelated \"white\" and correlated \"red\" noise. The software is able to simultaneously analyze multiple transits observed in different conditions (instrument, filter, weather, etc.). The graphical interface allows for the simple execution and interpretation of Bayesian MCMC analysis tailored to a user's specific data set and has been thoroughly tested on ground-based and Kepler photometry. This paper describes the software release and provides applications to new and existing data. Reanalysis of ground-based observations of TrES-1b, WASP-4b, and WASP-10b (Winn et al., 2007, 2009; Johnson et al., 2009; resp.) and space-based Kepler 4b\u20138b (Kipping and Bakos 2010) show good agreement between TAP and those publications. We also present new multi-filter light curves of WASP-10b and we find excellent agreement with previously published values for a smaller radius.", "date": "2012", "date_type": "published", "publication": "Advances in Astronomy", "volume": "2012", "publisher": "Hindawi Publishing Corporation", "pagerange": "Art. No. 697967", "id_number": "CaltechAUTHORS:20130220-113251395", "issn": "1687-7969", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20130220-113251395", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NSF", "grant_number": "AST-0702821" }, { "agency": "NSF", "grant_number": "AST-0908419" } ] }, "doi": "10.1155/2012/697967", "primary_object": { "basename": "697967.pdf", "url": "https://authors.library.caltech.edu/records/y71n5-kvf10/files/697967.pdf" }, "resource_type": "article", "pub_year": "2012", "author_list": "Gazak, J. Zachary; Johnson, John A.; et el." }, { "id": "https://authors.library.caltech.edu/records/1p2tr-5fx45", "eprint_id": 29067, "eprint_status": "archive", "datestamp": "2023-08-22 04:26:10", "lastmod": "2023-10-24 18:20:44", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Wittenmyer-R-A", "name": { "family": "Wittenmyer", "given": "Robert A." }, "orcid": "0000-0001-9957-9304" }, { "id": "Endl-M", "name": { "family": "Endl", "given": "Michael" }, "orcid": "0000-0002-7714-6310" }, { "id": "Wang-L", "name": { "family": "Wang", "given": "Liang" }, "orcid": "0000-0002-9803-166X" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" }, { "id": "Tinney-C-G", "name": { "family": "Tinney", "given": "C. G." }, "orcid": "0000-0002-7595-0970" }, { "id": "O'Toole-S-J", "name": { "family": "O'Toole", "given": "S. J." }, "orcid": "0000-0003-2839-8527" } ] }, "title": "The Pan-Pacific Planet Search. I. A Giant Planet Orbiting 7 CMa", "ispublished": "pub", "full_text_status": "public", "keywords": "planetary systems; stars: individual (HD 47205); techniques: radial velocities", "note": "\u00a9 2011 American Astronomical Society.\n\nReceived 2011 August 30; accepted 2011 November 3; published 2011 December 2.\n\nWe gratefully acknowledge the UK and Australian government\nsupport of the Anglo-Australian Telescope through their\nPPARC, STFC, and DIISR funding; STFC grant PP/C000552/1, ARC Grant DP0774000, and travel support from the\nAustralian Astronomical Observatory. R.W. is grateful to the\nChinese Academy of Sciences for the support of his stay\nin Beijing. R.W. is supported by a UNSW Vice-Chancellor's\nFellowship. We thank the ATAC for the generous allocation of telescope time which facilitated this detection. This research has made use of NASA's Astrophysics Data System (ADS), and the SIMBAD database, operated at CDS, Strasbourg, France. This research has made use of the Exoplanet Orbit Database and the Exoplanet Data Explorer at exoplanets.org.\n\nPublished - Wittenmyer2011p16924Astrophys_J.pdf
", "abstract": "We introduce the Pan-Pacific Planet Search, a survey of 170 metal-rich Southern Hemisphere subgiants using the 3.9 m Anglo-Australian Telescope. We report the first discovery from this program, a giant planet orbiting 7 CMa (HD 47205) with a period of 763 \u00b1 17 days, eccentricity e = 0.14 \u00b1 0.06, and msin i = 2.6 \u00b1 0.6 M_Jup. The host star is a K giant with a mass of 1.5 \u00b1 0.3 M_\u2609 and metallicity [Fe/H] = 0.21 \u00b1 0.10. The mass and period of 7 CMa b are typical of planets which have been found to orbit intermediate-mass stars (M_* > 1.3 M_\u2609). Hipparcos photometry shows this star to be stable to 0.0004 mag on the radial-velocity period, giving confidence that this signal can be attributed to reflex motion caused by an orbiting planet.", "date": "2011-12-20", "date_type": "published", "publication": "Astrophysical Journal", "volume": "743", "number": "2", "publisher": "American Astronomical Society", "pagerange": "184", "id_number": "CaltechAUTHORS:20120201-113101003", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20120201-113101003", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "STFC", "grant_number": "PP/C000552/1" }, { "agency": "ARC Grant", "grant_number": "DP0774000" }, { "agency": "Australian Astronomical Observatory" }, { "agency": "Chinese Academy of Sciences" }, { "agency": "UNSW Vice-Chancellor's Fellowship" } ] }, "doi": "10.1088/0004-637X/743/2/184", "primary_object": { "basename": "Wittenmyer2011p16924Astrophys_J.pdf", "url": "https://authors.library.caltech.edu/records/1p2tr-5fx45/files/Wittenmyer2011p16924Astrophys_J.pdf" }, "resource_type": "article", "pub_year": "2011", "author_list": "Wittenmyer, Robert A.; Endl, Michael; et el." }, { "id": "https://authors.library.caltech.edu/records/0bskt-krm17", "eprint_id": 29267, "eprint_status": "archive", "datestamp": "2023-08-19 08:56:33", "lastmod": "2023-10-24 22:03:16", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Xia-Yan", "name": { "family": "Xia", "given": "Yan" } }, { "id": "Li-Yongjun", "name": { "family": "Li", "given": "Yongjun" } }, { "id": "Burts-A-O", "name": { "family": "Burts", "given": "Alan O." } }, { "id": "Ottaviani-M-F", "name": { "family": "Ottaviani", "given": "M. Francesca" } }, { "id": "Tirrell-D-A", "name": { "family": "Tirrell", "given": "David A." }, "orcid": "0000-0003-3175-4596" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "Jeremiah A." }, "orcid": "0000-0001-9808-7172" }, { "id": "Turro-N-J", "name": { "family": "Turro", "given": "Nicholas J." } }, { "id": "Grubbs-R-H", "name": { "family": "Grubbs", "given": "Robert H." }, "orcid": "0000-0002-0057-7817" } ] }, "title": "EPR Study of Spin Labeled Brush Polymers in Organic Solvents", "ispublished": "pub", "full_text_status": "public", "note": "\u00a9 2011 American Chemical Society. \n\nPublication Date (Web): October 24, 2011. Received: September 9, 2011.\n\n We gratefully thank Dr. Xuegong Lei for help with initial EPR experiments. This work was supported by the Department of Energy (DE-FG02-05ER46218) and by the NSF Center for the Science and Engineering of Materials at the California Institute of Technology.\n\nSupplemental Material - ja2085349_si_001.pdf
", "abstract": "Spin-labeled polylactide brush polymers were synthesized via ring-opening metathesis polymerization (ROMP), and nitroxide radicals were incorporated at three different locations of brush polymers: the end and the middle of the backbone, and the end of the side chains (periphery). Electron paramagnetic resonance (EPR) was used to quantitatively probe the macromolecular structure of brush polymers in dilute solutions. The peripheral spin-labels showed significantly higher mobility than the backbone labels, and in dimethylsulfoxide (DMSO), the backbone end labels were shown to be more mobile than the middle labels. Reduction of the nitroxide labels by a polymeric reductant revealed location-dependent reactivity of the nitroxide labels: peripheral nitroxides were much more reactive than the backbone nitroxides. In contrast, almost no difference was observed when a small molecule reductant was used. These results reveal that the dense side chains of brush polymers significantly reduce the interaction of the backbone region with external macromolecules, but allow free diffusion of small molecules.", "date": "2011-12-14", "date_type": "published", "publication": "Journal of the American Chemical Society", "volume": "133", "number": "49", "publisher": "American Chemical Society", "pagerange": "19953-19959", "id_number": "CaltechAUTHORS:20120214-082513251", "issn": "0002-7863", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20120214-082513251", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "Department of Energy (DOE)", "grant_number": "DE-FG02-05ER46218" }, { "agency": "NSF" } ] }, "doi": "10.1021/ja2085349", "primary_object": { "basename": "ja2085349_si_001.pdf", "url": "https://authors.library.caltech.edu/records/0bskt-krm17/files/ja2085349_si_001.pdf" }, "resource_type": "article", "pub_year": "2011", "author_list": "Xia, Yan; Li, Yongjun; et el." }, { "id": "https://authors.library.caltech.edu/records/nz7a5-hrq02", "eprint_id": 28592, "eprint_status": "archive", "datestamp": "2023-08-22 04:19:33", "lastmod": "2023-10-24 18:00:41", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Bakos-G-\u00c1", "name": { "family": "Bakos", "given": "G. \u00c1." }, "orcid": "0000-0001-7204-6727" }, { "id": "Hartman-J", "name": { "family": "Hartman", "given": "J." } }, { "id": "Torres-G", "name": { "family": "Torres", "given": "G." }, "orcid": "0000-0002-5286-0251" }, { "id": "Latham-D-W", "name": { "family": "Latham", "given": "D. W." }, "orcid": "0000-0001-9911-7388" }, { "id": "Kov\u00e1cs-G", "name": { "family": "Kov\u00e1cs", "given": "G\u00e9za" } }, { "id": "Noyes-R-W", "name": { "family": "Noyes", "given": "R. W." } }, { "id": "Fischer-D-A", "name": { "family": "Fischer", "given": "D. A." }, "orcid": "0000-0003-2221-0861" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "J. A." }, "orcid": "0000-0001-9808-7172" }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "G. W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "A. W." }, "orcid": "0000-0001-8638-0320" }, { "id": "Kipping-D", "name": { "family": "Kipping", "given": "D." } }, { "id": "Esquerdo-G-A", "name": { "family": "Esquerdo", "given": "G. A." }, "orcid": "0000-0002-9789-5474" }, { "id": "Shporer-A", "name": { "family": "Shporer", "given": "A." }, "orcid": "0000-0002-1836-3120" }, { "id": "B\u00e9ky-B", "name": { "family": "B\u00e9ky", "given": "B." } }, { "id": "Buchhave-L-A", "name": { "family": "Buchhave", "given": "L. A." }, "orcid": "0000-0003-1605-5666" }, { "id": "Perumpilly-G", "name": { "family": "Perumpilly", "given": "G." } }, { "id": "Everett-M-E", "name": { "family": "Everett", "given": "M." }, "orcid": "0000-0002-0885-7215" }, { "id": "Sasselov-D-D", "name": { "family": "Sasselov", "given": "D. D." }, "orcid": "0000-0001-7014-1771" }, { "id": "Stefanik-R-P", "name": { "family": "Stefanik", "given": "R. P." } }, { "id": "L\u00e1z\u00e1r-J", "name": { "family": "L\u00e1z\u00e1r", "given": "J." } }, { "id": "Papp-I", "name": { "family": "Papp", "given": "I." } }, { "id": "S\u00e1ri-P", "name": { "family": "S\u00e1ri", "given": "P." } } ] }, "title": "Hat-P-20b-Hat-p-23b: Four Massive Transiting Extrasolar Planets", "ispublished": "pub", "full_text_status": "public", "keywords": "stars: individual (HAT-P-20, HAT-P-21, HAT-P-22, HAT-P-23); techniques: photometric; techniques: spectroscopic", "note": "\u00a9 2011 The American Astronomical Society. Received 2010 August 1; accepted 2011 August 15; published 2011 November 15. \nBased in part on observations obtained at the W. M. Keck Observatory,\nwhich is operated by the University of California and the California Institute of\nTechnology. Keck time has been granted by NOAO and NASA.\nHATNet operations have been funded by NASA grants\nNNG04GN74G, NNX08AF23G, and SAO IR&D grants. Work of G.\u00c1.B. was supported by the Postdoctoral Fellowship of the NSF Astronomy and Astrophysics Program (AST-0702843 and AST-0702821, respectively). G.T. acknowledges partial\nsupport from NASA grant NNX09AF59G. We acknowledge\npartial support also from the Kepler Mission under NASA\nCooperative Agreement NCC2-1390 (D.W.L., PI). G.K. thanks\nthe Hungarian Scientific Research Foundation (OTKA) for\nsupport through grant K-81373. This research has made use\nof Keck telescope time granted through NOAO and NASA, and\nuses observations obtained with facilities of the Las Cumbres Observatory Global Telescope. The authors recognize and acknowledge the very significant cultural role and reverence that the summit of Mauna Kea has always had within the indigenous Hawaiian community. We are most fortunate to have the opportunity to conduct observations from this mountain.\n\nPublished - Bakos2011p16573Astrophys_J.pdf
", "abstract": "We report the discovery of four relatively massive (2-7 M J) transiting extrasolar planets. HAT-P-20b orbits the moderately bright V = 11.339 K3 dwarf star GSC 1910-00239 on a circular orbit, with a period P = 2.875317 \u00b1 0.000004 days, transit epoch T_c = 2455080.92661 \u00b1 0.00021 (BJD_(UTC)), and transit duration 0.0770 \u00b1 0.0008 days. The host star has a mass of 0.76 \u00b1 0.03 M_\u2609, radius of 0.69 \u00b1 0.02 R_\u2609, effective temperature 4595 \u00b1 80 K, and metallicity [Fe/H] = +0.35 \u00b1 0.08. The planetary companion has a mass of 7.246 \u00b1 0.187 M_J and a radius of 0.867 \u00b1 0.033 R_J yielding a mean density of 13.78 \u00b1 1.50 g cm^(\u20133). HAT-P-21b orbits the V = 11.685 G3 dwarf star GSC 3013-01229 on an eccentric (e = 0.228 \u00b1 0.016) orbit, with a period P = 4.124481 \u00b1 0.000007 days, transit epoch T_c = 2454996.41312 \u00b1 0.00069, and transit duration 0.1530 \u00b1 0.0027 days. The host star has a mass of 0.95 \u00b1 0.04 M_\u2609, radius of 1.10 \u00b1 0.08 R_\u2609, effective temperature 5588 \u00b1 80 K, and metallicity [Fe/H] = +0.01 \u00b1 0.08. The planetary companion has a mass of 4.063 \u00b1 0.161 M_J and a radius of 1.024 \u00b1 0.092 R_J yielding a mean density of 4.68^(+1.59)_(\u20130.99) g cm^(-3). HAT-P-21b is a borderline object between the pM and pL class planets, and the transits occur near apastron. HAT-P-22b orbits the bright V = 9.732 G5 dwarf star HD 233731 on a circular orbit, with a period P = 3.212220 \u00b1 0.000009 days, transit epoch T_c = 2454930.22001 \u00b1 0.00025, and transit duration 0.1196 \u00b1 0.0014 days. The host star has a mass of 0.92 \u00b1 0.03 M_\u2609, radius of 1.04 \u00b1 0.04 R_\u2609, effective temperature 5302 \u00b1 80 K, and metallicity [Fe/H] = +0.24 \u00b1 0.08. The planet has a mass of 2.147 \u00b1 0.061 M_J and a compact radius of 1.080 \u00b1 0.058 R_J yielding a mean density of 2.11^(+0.40)_(\u20130.29) g cm^(\u20133). The host star also harbors an M-dwarf companion at a wide separation. Finally, HAT-P-23b orbits the V = 12.432 G0 dwarf star GSC 1632-01396 on a close to circular orbit, with a period P = 1.212884 \u00b1 0.000002 days, transit epoch T_c = 2454852.26464 \u00b1 0.00018, and transit duration 0.0908 \u00b1 0.0007 days. The host star has a mass of 1.13 \u00b1 0.04 M_\u2609, radius of 1.20 \u00b1 0.07 R_\u2609, effective temperature 5905 \u00b1 80 K, and metallicity [Fe/H] = +0.15 \u00b1 0.04. The planetary companion has a mass of 2.090 \u00b1 0.111 M_J and a radius of 1.368 \u00b1 0.090 R_J yielding a mean density of 1.01 \u00b1 0.18 g cm^(\u20133). HAT-P-23b is an inflated and massive hot Jupiter on a very short period orbit, and has one of the shortest characteristic infall times (7.5^(+2.9)_(\u20131.8) Myr) before it gets engulfed by the star.", "date": "2011-12-01", "date_type": "published", "publication": "Astrophysical Journal", "volume": "742", "number": "2", "publisher": "American Astronomical Society", "pagerange": "Art. No. 116", "id_number": "CaltechAUTHORS:20111223-113730703", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20111223-113730703", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNG04GN74G" }, { "agency": "NASA", "grant_number": "NNX08AF23G" }, { "agency": "Smithsonian Astrophysical Observatory" }, { "agency": "NSF Astronomy and Astrophysics Fellowship", "grant_number": "AST-0702843" }, { "agency": "NSF Astronomy and Astrophysics Fellowship", "grant_number": "AST-0702821" }, { "agency": "NASA", "grant_number": "NNX09AF59G" }, { "agency": "NASA", "grant_number": "NNC2-1390" }, { "agency": "Hungarian Scientific Research Fund (OTKA)", "grant_number": "K-81373" }, { "agency": "National Optical Astronomy Observatory (NOAO)" } ] }, "doi": "10.1088/0004-637X/742/2/116", "primary_object": { "basename": "Bakos2011p16573Astrophys_J.pdf", "url": "https://authors.library.caltech.edu/records/nz7a5-hrq02/files/Bakos2011p16573Astrophys_J.pdf" }, "resource_type": "article", "pub_year": "2011", "author_list": "Bakos, G. \u00c1.; Hartman, J.; et el." }, { "id": "https://authors.library.caltech.edu/records/4tqmq-51w14", "eprint_id": 28897, "eprint_status": "archive", "datestamp": "2023-08-22 04:14:44", "lastmod": "2023-10-24 18:13:35", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" }, { "id": "Clanton-C", "name": { "family": "Clanton", "given": "Christian" } }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "Andrew W." }, "orcid": "0000-0001-8638-0320" }, { "id": "Bowler-B-P", "name": { "family": "Bowler", "given": "Brendan P." }, "orcid": "0000-0003-2649-2288" }, { "id": "Henry-G-W", "name": { "family": "Henry", "given": "Gregory W." }, "orcid": "0000-0003-4155-8513" }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "Geoffrey W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Crepp-J-R", "name": { "family": "Crepp", "given": "Justin R." }, "orcid": "0000-0003-0800-0593" }, { "id": "Endl-M", "name": { "family": "Endl", "given": "Michael" }, "orcid": "0000-0002-7714-6310" }, { "id": "Cochran-W-D", "name": { "family": "Cochran", "given": "William D." }, "orcid": "0000-0001-9662-3496" }, { "id": "MacQueen-P-J", "name": { "family": "MacQueen", "given": "Phillip J." } }, { "id": "Wright-J-T", "name": { "family": "Wright", "given": "Jason T." }, "orcid": "0000-0001-6160-5888" }, { "id": "Isaacson-H-T", "name": { "family": "Isaacson", "given": "Howard" }, "orcid": "0000-0002-0531-1073" } ] }, "title": "Retired A Stars and Their Companions. VII. 18 New Jovian Planets", "ispublished": "pub", "full_text_status": "public", "keywords": "binaries: spectroscopic; planetary systems; techniques: photometric; techniques: radial velocities", "note": "\u00a9 2011 American Astronomical Society. \n\nReceived 2011 May 10; accepted 2011 September 26; published 2011 November 29. \n\nBased on observations obtained at the W. M. Keck Observatory and with the\nHobby-Ebberly Telescope at the McDonald Observatory. Keck is operated\njointly by the University of California and the California Institute of\nTechnology. Keck time has been granted by Caltech, the University of Hawaii,\nNASA, and the University of California.\nWe thank the many observers who contributed to the observations reported here. We gratefully acknowledge the efforts and dedication of the Keck Observatory staff, especially Grant Hill, Scott Dahm, and Hien Tran for their support of HIRES and Greg Wirth for support of remote observing. We are also grateful to the time assignment committees of NASA, NOAO, Caltech, and the University of California for their generous allocations of observing time. J.A.J. thanks the NSF Astronomy and Astrophysics Postdoctoral Fellowship program for support in the years leading to the completion of this work and acknowledges\nsupport from NSF grant AST-0702821 and the NASA\nExoplanets Science Institute (NExScI). G.W.M. acknowledges\nNASA grant NNX06AH52G. J.T.W. was partially supported by\nfunding from the Center for Exoplanets and Habitable Worlds.\nThe Center for Exoplanets and Habitable Worlds is supported\nby the Pennsylvania State University, the Eberly College of Science, and the Pennsylvania Space Grant Consortium. G.W.H. acknowledges support from NASA, NSF, Tennessee State University, and the State of Tennessee through its Centers of Excellence program. Finally, the authors wish to extend special thanks to those of Hawaiian ancestry on whose sacred mountain of Mauna Kea we are privileged to be guests. Without their generous hospitality, the Keck observations presented herein would not have been possible.\n\nPublished - Johnson2011p16848Astrophys_J_Suppl_S.pdf
", "abstract": "We report the detection of 18 Jovian planets discovered as part of our Doppler survey of subgiant stars at Keck Observatory, with follow-up Doppler and photometric observations made at McDonald and Fairborn Observatories, respectively. The host stars have masses 0.927 \u2264 M_*/M_\u2609 \u2264 1.95, radii 2.5 \u2264 R_*/R_\u2609 \u2264 8.7, and metallicities \u20130.46 \u2264 [Fe/H] \u2264+0.30. The planets have minimum masses 0.9 M_Jup \u2264 M_P sin i \u2272 13 M_Jup and semimajor axes a \u2265 0.76 AU. These detections represent a 50% increase in the number of planets known to orbit stars more massive than 1.5 M_\u2609 and provide valuable additional information about the properties of planets around stars more massive than the Sun.", "date": "2011-12", "date_type": "published", "publication": "Astrophysical Journal Supplement Series", "volume": "197", "number": "2", "publisher": "American Astronomical Society", "pagerange": "26", "id_number": "CaltechAUTHORS:20120120-151942870", "issn": "0067-0049", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20120120-151942870", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NSF Astronomy and Astrophysics Fellowship" }, { "agency": "NSF", "grant_number": "AST-0702821" }, { "agency": "NASA", "grant_number": "NNX06AH52G" }, { "agency": "Center for Exoplanets and Habitable Worlds" }, { "agency": "Tennessee State University" }, { "agency": "State of Tennessee Centers of Excellence program" } ] }, "local_group": { "items": [ { "id": "Infrared-Processing-and-Analysis-Center-(IPAC)" } ] }, "doi": "10.1088/0067-0049/197/2/26", "primary_object": { "basename": "Johnson2011p16848Astrophys_J_Suppl_S.pdf", "url": "https://authors.library.caltech.edu/records/4tqmq-51w14/files/Johnson2011p16848Astrophys_J_Suppl_S.pdf" }, "resource_type": "article", "pub_year": "2011", "author_list": "Johnson, John Asher; Clanton, Christian; et el." }, { "id": "https://authors.library.caltech.edu/records/8xt9k-ygg21", "eprint_id": 28321, "eprint_status": "archive", "datestamp": "2023-08-22 04:11:40", "lastmod": "2023-10-24 17:48:50", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Hartman-J-D", "name": { "family": "Hartman", "given": "J. D." }, "orcid": "0000-0001-8732-6166" }, { "id": "Bakos-G-\u00c1", "name": { "family": "Bakos", "given": "G. \u00c1." }, "orcid": "0000-0001-7204-6727" }, { "id": "Torres-G", "name": { "family": "Torres", "given": "G." }, "orcid": "0000-0002-5286-0251" }, { "id": "Latham-D-W", "name": { "family": "Latham", "given": "D. W." }, "orcid": "0000-0001-9911-7388" }, { "id": "Kov\u00e1cs-G", "name": { "family": "Kov\u00e1cs", "given": "G\u00e9za" } }, { "id": "B\u00e9ky-B", "name": { "family": "B\u00e9ky", "given": "B." } }, { "id": "Quinn-S-N", "name": { "family": "Quinn", "given": "S. N." }, "orcid": "0000-0002-8964-8377" }, { "id": "Mazeh-T", "name": { "family": "Mazeh", "given": "T." } }, { "id": "Shporer-A", "name": { "family": "Shporer", "given": "A." }, "orcid": "0000-0002-1836-3120" }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "G. W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "A. W." }, "orcid": "0000-0001-8638-0320" }, { "id": "Fischer-D-A", "name": { "family": "Fischer", "given": "D. A." }, "orcid": "0000-0003-2221-0861" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "J. A." }, "orcid": "0000-0001-9808-7172" }, { "id": "Esquerdo-G-A", "name": { "family": "Esquerdo", "given": "G. A." }, "orcid": "0000-0002-9789-5474" }, { "id": "Noyes-R-W", "name": { "family": "Noyes", "given": "R. W." } }, { "id": "Sasselov-D-D", "name": { "family": "Sasselov", "given": "D. D." }, "orcid": "0000-0001-7014-1771" }, { "id": "Stefanik-R-P", "name": { "family": "Stefanik", "given": "R. P." } }, { "id": "Fernandez-J-M", "name": { "family": "Fernandez", "given": "J. M." } }, { "id": "Szklen\u00e1r-T", "name": { "family": "Szklen\u00e1r", "given": "T." } }, { "id": "L\u00e1z\u00e1r-J", "name": { "family": "L\u00e1z\u00e1r", "given": "J." } }, { "id": "Papp-I", "name": { "family": "Papp", "given": "I." } }, { "id": "S\u00e1ri-P", "name": { "family": "S\u00e1ri", "given": "P." } } ] }, "title": "HAT-P-32b and HAT-P-33b: Two Highly Inflated Hot Jupiters Transiting High-jitter Stars", "ispublished": "pub", "full_text_status": "public", "keywords": "planetary systems; stars: individual (HAT-P-32, GSC 3281-00800, HAT-P-33, GSC 2461-00988); techniques: photometric; techniques: spectroscopic", "note": "\u00a9 2011 The American Astronomical Society. Received 2011 June 6; accepted 2011 September 28; published 2011 November 3. \nBased in part on observations obtained at the W. M. Keck Observatory,\nwhich is operated by the University of California and the California Institute of\nTechnology. Keck time has been granted by NOAO (A285Hr, A146Hr,\nA201Hr, A289Hr), NASA (N128Hr, N145Hr, N049Hr, N018Hr, N167Hr,\nN029Hr), and the NOAO Gemini/Keck time-exchange program (G329Hr).\nHATNet operations have been funded by NASA grants\nNNG04GN74G, NNX08AF23G and SAO IR&D grants. Works of G. \u00c1. B. and J. J. were supported by the Postdoctoral Fellowship of the NSF Astronomy and Astrophysics Program (AST-0702843 and AST-0702821, respectively). G.T. acknowledges partial support from NASA grant NNX09AF59G. We acknowledge partial support also from the Kepler Mission under NASA Cooperative Agreement NCC2-1390 (PI:D.W.L.). G.K. thanks the Hungarian Scientific Research Foundation (OTKA) for support through grant K-81373. This research has made use of Keck telescope time granted through NOAO (A285Hr, A146Hr, A201Hr, A289Hr), NASA (N128Hr, N145Hr, N049Hr, N018Hr, N167Hr, N029Hr), and the NOAO Gemini/Keck time-exchange program (G329Hr). We gratefully acknowledge F. Bouchy, F. Pont, and the SOPHIE team for their efforts in gathering OHP/SOPHIE observations of HAT-P-33.\n\nPublished - Hartman2011p16411Astrophys_J.pdf
", "abstract": "We report the discovery of two exoplanets transiting high-jitter stars. HAT-P-32b orbits the bright V = 11.289 late-F-early-G dwarf star GSC 3281-00800, with a period P = 2.150008 \u00b1 0.000001 d. The stellar and planetary masses and radii depend on the eccentricity of the system, which is poorly constrained due to the high-velocity jitter (~80 m s^(\u20131)). Assuming a circular orbit, the star has a mass of 1.16 \u00b1 0.04 M_\u2609 and radius of 1.22 \u00b1 0.02 R_\u2609, while the planet has a mass of 0.860 \u00b1 0.164 M_J and a radius of 1.789 \u00b1 0.025 R_J. The second planet, HAT-P-33b, orbits the bright V = 11.188 late-F dwarf star GSC 2461-00988, with a period P = 3.474474 \u00b1 0.000001 d. As for HAT-P-32, the stellar and planetary masses and radii of HAT-P-33 depend on the eccentricity, which is poorly constrained due to the high jitter (~50 m s^(\u20131)). In this case, spectral line bisector spans (BSs) are significantly anti-correlated with the radial velocity residuals, and we are able to use this correlation to reduce the residual rms to ~35 m s^(\u20131). We find that the star has a mass of 1.38 \u00b1 0.04 M_\u2609 and a radius of 1.64 \u00b1 0.03 R_\u2609 while the planet has a mass of 0.762 \u00b1 0.101 M_J and a radius of 1.686 \u00b1 0.045 R_J for an assumed circular orbit. Due to the large BS variations exhibited by both stars we rely on detailed modeling of the photometric light curves to rule out blend scenarios. Both planets are among the largest radii transiting planets discovered to date.", "date": "2011-11-20", "date_type": "published", "publication": "Astrophysical Journal", "volume": "742", "number": "1", "publisher": "American Astronomical Society", "pagerange": "Art. No. 59", "id_number": "CaltechAUTHORS:20111206-133628759", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20111206-133628759", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNG04GN74G" }, { "agency": "NASA", "grant_number": "NNX08AF23G" }, { "agency": "Smithsonian Astrophysical Observatory" }, { "agency": "NSF Astronomy and Astrophysics Fellowship", "grant_number": "AST-0702843" }, { "agency": "NSF Astronomy and Astrophysics Fellowship", "grant_number": "AST-0702821" }, { "agency": "NASA", "grant_number": "NNX09AF59G" }, { "agency": "NASA", "grant_number": "NCC2-1390" }, { "agency": "Hungarian Scientific Research Fund (OTKA)", "grant_number": "K-81373" }, { "agency": "National Optical Astronomy Observatory (NOAO)", "grant_number": "A285Hr" }, { "agency": "National Optical Astronomy Observatory (NOAO)", "grant_number": "A146Hr" }, { "agency": "National Optical Astronomy Observatory (NOAO)", "grant_number": "A201Hr" }, { "agency": "National Optical Astronomy Observatory (NOAO)", "grant_number": "A289Hr" }, { "agency": "NASA", "grant_number": "N128Hr" }, { "agency": "NASA", "grant_number": "N145Hr" }, { "agency": "NASA", "grant_number": "N049Hr" }, { "agency": "NASA", "grant_number": "N018Hr" }, { "agency": "NASA", "grant_number": "N167Hr" }, { "agency": "NASA", "grant_number": "N029Hr" }, { "agency": "NOAO Gemini/Keck time-exchange program", "grant_number": "G329Hr" } ] }, "doi": "10.1088/0004-637X/742/1/59", "primary_object": { "basename": "Hartman2011p16411Astrophys_J.pdf", "url": "https://authors.library.caltech.edu/records/8xt9k-ygg21/files/Hartman2011p16411Astrophys_J.pdf" }, "resource_type": "article", "pub_year": "2011", "author_list": "Hartman, J. D.; Bakos, G. \u00c1.; et el." }, { "id": "https://authors.library.caltech.edu/records/h0kam-kpq03", "eprint_id": 28346, "eprint_status": "archive", "datestamp": "2023-08-22 04:07:07", "lastmod": "2023-10-24 17:49:51", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Winn-J-N", "name": { "family": "Winn", "given": "Joshua N." }, "orcid": "0000-0002-4265-047X" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "Andrew W." }, "orcid": "0000-0001-8638-0320" } ] }, "title": "Spin-Orbit Alignment for the Circumbinary Planet Host Kepler-16 A", "ispublished": "pub", "full_text_status": "public", "keywords": "binaries: general; planets and satellites: formation; stars: individual (Kepler-16 A, KIC 12644769); stars: low-mass; stars: rotation", "note": "\u00a9 2011 The American Astronomical Society. Received 2011 August 3; accepted 2011 September 21; published 2011 October 5. We thank Brice-Olivier Demory, Nevin Weinberg, and Jamie\nLloyd for helpful discussions. Work by J.N.W. and S.A. was\nsupported by NASA Origins award NNX09AB33G. G.T.\nacknowledges partial support from the NSF through grant\nAST-1007992. Funding for the Kepler Discovery mission is\nprovided by NASA's Science Mission Directorate. The W. M.\nKeck Observatory is operated as a scientific partnership among\nthe California Institute of Technology, the University of\nCalifornia, and the National Aeronautics and Space Administration,\nand was made possible by the generous financial support of\nthe W. M. Keck Foundation. We extend special thanks to those\nof Hawaiian ancestry on whose sacred mountain of Mauna Kea\nwe are privileged to be guests.\nFacilities: Keck:I(HIRES), Kepler\n\nPublished - Winn2011p16404Astrophys_J_Lett.pdf
", "abstract": "Kepler-16 is an eccentric low-mass eclipsing binary with a circumbinary transiting planet. Here, we investigate the\nangular momentum of the primary star, based on Kepler photometry and Keck spectroscopy. The primary star's\nrotation period is 35.1 \u00b1 1.0 days, and its projected obliquity with respect to the stellar binary orbit is 1\u00b0.6 \u00b1 2\u00b0.4. Therefore, the three largest sources of angular momentum\u2014the stellar orbit, the planetary orbit, and the primary's rotation\u2014are all closely aligned. This finding supports a formation scenario involving accretion from a single disk. Alternatively, tides may have realigned the stars despite their relatively wide separation (0.2 AU), a hypothesis that is supported by the agreement between the measured rotation period and the \"pseudosynchronous\" period of tidal evolution theory. The rotation period, chromospheric activity level, and fractional light variations suggest a main-sequence age of 2\u20134 Gyr. Evolutionary models of low-mass stars can match the observed masses and radii of the primary and secondary stars to within about 3%.", "date": "2011-11-01", "date_type": "published", "publication": "Astrophysical Journal Letters", "volume": "741", "number": "1", "publisher": "American Astronomical Society", "pagerange": "Art. No. L1", "id_number": "CaltechAUTHORS:20111207-111645632", "issn": "2041-8205", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20111207-111645632", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNX09AB33G" }, { "agency": "NSF", "grant_number": "AST-1007992" }, { "agency": "W. M. Keck Foundation" } ] }, "doi": "10.1088/2041-8205/741/1/L1", "primary_object": { "basename": "Winn2011p16404Astrophys_J_Lett.pdf", "url": "https://authors.library.caltech.edu/records/h0kam-kpq03/files/Winn2011p16404Astrophys_J_Lett.pdf" }, "resource_type": "article", "pub_year": "2011", "author_list": "Winn, Joshua N.; Johnson, John Asher; et el." }, { "id": "https://authors.library.caltech.edu/records/btrcz-d1973", "eprint_id": 28445, "eprint_status": "archive", "datestamp": "2023-08-22 04:03:20", "lastmod": "2024-02-02 21:10:54", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Cochran-W-D", "name": { "family": "Cochran", "given": "William D." }, "orcid": "0000-0001-9662-3496" }, { "id": "Ciardi-D-R", "name": { "family": "Ciardi", "given": "David R." }, "orcid": "0000-0002-5741-3047" }, { "id": "Knutson-H-A", "name": { "family": "Knutson", "given": "Heather" }, "orcid": "0000-0002-5375-4725" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John A." }, "orcid": "0000-0001-9808-7172" }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "Andrew W." }, "orcid": "0000-0001-8638-0320" } ] }, "title": "Kepler-18b,c, and d: A System of Three Planets Confirmed by Transit Timing Variations, Light Curve Validation, Warm-Spitzer Photometry, and Radial Velocity Measurements", "ispublished": "pub", "full_text_status": "public", "keywords": "planetary systems; stars: individual (Kepler-18, KIC 8644288, 2MASS J19521906+4444467); techniques: photometric; techniques: spectroscopic", "note": "\u00a9 2011 The American Astronomical Society. \n\nReceived 2011 July 8; accepted 2011 September 1; published 2011 October 11. \n\nBased in part on observations obtained at the W. M. Keck Observatory,\nwhich is operated by the University of California and the California Institute of\nTechnology.\nKepler was competitively selected as the tenth Discovery\nmission. Funding for the Kepler Mission is provided by NASA's Science Mission Directorate. We are deeply grateful for the very hard work of the entire Kepler team. This research is based in part on observations made with the Spitzer Space Telescope, which is operated by the Jet Propulsion Laboratory, California Institute of Technology under a contract with NASA. Support for this work was provided by NASA through an award issued by JPL/Caltech. Some of the data presented herein were obtained at the W. M. Keck Observatory, which is operated as a scientific partnership among the California Institute of Technology, the University of California, and the National Aeronautics and Space Administration. The Keck Observatory was made possible by the generous financial support of the W. M. Keck Foundation.\n\nPublished - Cochran2011p16468Astrophys_J_Suppl_S.pdf
", "abstract": "We report the detection of three transiting planets around a Sun-like star, which we designate Kepler-18. The transit signals were detected in photometric data from the Kepler satellite, and were confirmed to arise from planets using a combination of large transit-timing variations (TTVs), radial velocity variations, Warm-Spitzer observations, and statistical analysis of false-positive probabilities. The Kepler-18 star has a mass of 0.97 M_\u2609, a radius of 1.1 R_\u2609, an effective temperature of 5345 K, and an iron abundance of [Fe/H] = +0.19. The planets have orbital periods of approximately 3.5, 7.6, and 14.9 days. The innermost planet \"b\" is a \"super-Earth\" with a mass of 6.9 \u00b1 3.4 M_\u2295, a radius of 2.00 \u00b1 0.10 R_\u2295, and a mean density of 4.9 \u00b1 2.4 g cm^3. The two outer planets \"c\" and \"d\" are both low-density Neptune-mass planets. Kepler-18c has a mass of 17.3 \u00b1 1.9 M_\u2295, a radius of 5.49 \u00b1 0.26 R_\u2295, and a mean density of 0.59 \u00b1 0.07 g cm^3, while Kepler-18d has a mass of 16.4 \u00b1 1.4 M_\u2295, a radius of 6.98 \u00b1 0.33 R_\u2295 and a mean density of 0.27 \u00b1 0.03 g cm^3. Kepler-18c and Kepler-18d have orbital periods near a 2:1 mean-motion resonance, leading to large and readily detected TTVs.", "date": "2011-11", "date_type": "published", "publication": "Astrophysical Journal Supplement Series", "volume": "197", "number": "1", "publisher": "American Astronomical Society", "pagerange": "Art. No. 7", "id_number": "CaltechAUTHORS:20111213-110331493", "issn": "0067-0049", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20111213-110331493", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA/JPL/Caltech" }, { "agency": "W. M. Keck Foundation" } ] }, "local_group": { "items": [ { "id": "Infrared-Processing-and-Analysis-Center-(IPAC)" }, { "id": "Division-of-Geological-and-Planetary-Sciences" } ] }, "doi": "10.1088/0067-0049/197/1/7", "primary_object": { "basename": "Cochran2011p16468Astrophys_J_Suppl_S.pdf", "url": "https://authors.library.caltech.edu/records/btrcz-d1973/files/Cochran2011p16468Astrophys_J_Suppl_S.pdf" }, "resource_type": "article", "pub_year": "2011", "author_list": "Cochran, William D.; Ciardi, David R.; et el." }, { "id": "https://authors.library.caltech.edu/records/434yc-5jw62", "eprint_id": 25509, "eprint_status": "archive", "datestamp": "2023-08-22 03:40:19", "lastmod": "2023-10-24 15:56:11", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Morton-T-D", "name": { "family": "Morton", "given": "Timothy D." }, "orcid": "0000-0002-8537-5711" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" } ] }, "title": "On the Low False Positive Probabilities of Kepler Planet Candidates", "ispublished": "pub", "full_text_status": "public", "keywords": "methods: statistical; planets and satellites: general; stars: statistics", "note": "\u00a9 2011 The American Astronomical Society. Received 2011 February 2; accepted 2011 June 11; published 2011 August 23.\n\nWe gratefully acknowledge Ed Turner and Scott Gaudi for their thoughtful and detailed comments on early drafts of this paper. We thank Geoff Marcy, Steve Bryson, and Guillermo Torres for their useful discussions related to the Kepler mission at the 2011 January AAS meeting and during the referee process, as well as Fran\u00e7ois Fressin and other Kepler team members for enlightening discussions during and following the 2011 May Boston AAS meeting. We thank Jack Lissauer for pointing out the importance of considering the eccentricities of binary systems. We thank Jessica Lu for bringing TRILEGAL to our attention. Finally, we acknowledge the dedication and hard work of the Kepler team for opening up this amazing new frontier in exoplanetary science.\n\nPublished - Morton2011p15957Astrophys_J.pdf
", "abstract": "We present a framework to conservatively estimate the probability that any particular planet-like transit signal observed by the Kepler mission is in fact a planet, prior to any ground-based follow-up efforts. We use Monte Carlo methods based on stellar population synthesis and Galactic structure models, and report false positive probabilities (FPPs) for every Kepler Object of Interest, assuming a 20% intrinsic occurrence rate of close-in planets in the radius range 0.5 R_\u2295 < R_p < 20 R_\u2295. Nearly 90% of the 1235 candidates have FPP <10%, and over half have FPP <5%. This probability varies with the magnitude and Galactic latitude of the target star, and with the depth of the transit signal\u2014deeper signals generally have higher FPPs than shallower signals. We establish that a single deep high-resolution image will be an effective follow-up tool for the shallowest (Earth-sized) transits, providing the quickest route toward probabilistically validating the smallest candidates by potentially decreasing the FPP of an Earth-sized transit around a faint star from >10% to <1%. Since Kepler has detected many more planetary signals than can be positively confirmed with ground-based follow-up efforts in the near term, these calculations will be crucial to using the ensemble of Kepler data to determine population characteristics of planetary systems. We also describe how our analysis complements the Kepler team's more detailed BLENDER false positive analysis for planet validation.", "date": "2011-09-10", "date_type": "published", "publication": "Astrophysical Journal", "volume": "738", "number": "2", "publisher": "American Astronomical Society", "pagerange": "Art. No. 170", "id_number": "CaltechAUTHORS:20110930-110001003", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20110930-110001003", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "doi": "10.1088/0004-637X/738/2/170", "primary_object": { "basename": "Morton2011p15957Astrophys_J.pdf", "url": "https://authors.library.caltech.edu/records/434yc-5jw62/files/Morton2011p15957Astrophys_J.pdf" }, "resource_type": "article", "pub_year": "2011", "author_list": "Morton, Timothy D. and Johnson, John Asher" }, { "id": "https://authors.library.caltech.edu/records/v21zh-s2b83", "eprint_id": 25259, "eprint_status": "archive", "datestamp": "2023-08-22 03:37:08", "lastmod": "2023-10-24 15:44:35", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Albrecht-S", "name": { "family": "Albrecht", "given": "Simon" } }, { "id": "Winn-J-N", "name": { "family": "Winn", "given": "Joshua N." }, "orcid": "0000-0002-4265-047X" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" }, { "id": "Butler-R-P", "name": { "family": "Butler", "given": "R. Paul" } }, { "id": "Crane-J-D", "name": { "family": "Crane", "given": "Jeffrey D." } }, { "id": "Shectman-S-A", "name": { "family": "Shectman", "given": "Stephen A." } }, { "id": "Thompson-I-B", "name": { "family": "Thompson", "given": "Ian B." } }, { "id": "Narita-Norio", "name": { "family": "Narita", "given": "Norio" } }, { "id": "Sato-Bun'ei", "name": { "family": "Sato", "given": "Bun'ei" } }, { "id": "Hirano-Teruyuki", "name": { "family": "Hirano", "given": "Teruyuki" }, "orcid": "0000-0003-3618-7535" }, { "id": "Enya-Keigo", "name": { "family": "Enya", "given": "Keigo" } }, { "id": "Fischer-D-A", "name": { "family": "Fischer", "given": "Debra" }, "orcid": "0000-0003-2221-0861" } ] }, "title": "Two Upper Limits on the Rossiter-Mclaughlin Effect, with Differing Implications: WASP-1 has a High Obliquity and WASP-2 is Indeterminate", "ispublished": "pub", "full_text_status": "public", "keywords": "planetary systems; planets and satellites: formation; planet\u2013star interactions; stars: rotation; techniques: spectroscopic", "note": "\u00a9 2011 American Astronomical Society.\n\nReceived 2011 May 19; accepted 2011 June 10; published 2011 August 11.\nThe data presented herein were collected with the Magellan (Clay)\nTelescope located at Las Campanas Observatory, Chile; the Subaru telescope,\nwhich is operated by the National Astronomical Observatory of Japan; and the\nKeck I telescope at the W. M. Keck Observatory, which is operated as a\nscientific partnership among the California Institute of Technology, the\nUniversity of California and the National Aeronautics and Space\nAdministration.\nWe thank G. Marcy and M. Holman for help gathering some\nof the data presented here. We are grateful to the anonymous referee for a prompt and insightful report, and to Amaury Triaud for comments on the manuscript. S.A. acknowledges support by a Rubicon fellowship from the Netherlands Organization for Scientific Research (NWO). J.N.W. acknowledges support from a NASA Origins grant (NNX09AD36G). This research has made use of the Simbad database located at http://simbad.u-strasbg.fr/.\nFacilities: Keck:I, Subaru, Magellan:Clay\n\nPublished - Albrecht2011p15679Astrophys_J.pdf
", "abstract": "We present precise radial-velocity (RV) measurements of WASP-1 and WASP-2 throughout transits of their giant planets. Our goal was to detect the Rossiter-McLaughlin (RM) effect, the anomalous RV observed during eclipses of rotating stars, which can be used to study the obliquities of planet-hosting stars. For WASP-1, a weak signal of a prograde orbit was detected with \u22482\u03c3 confidence, and for WASP-2 no signal was detected. The resulting upper bounds on the RM amplitude have different implications for these two systems because of the contrasting transit geometries and the stellar types. Because WASP-1 is an F7V star, and such stars are typically rapid rotators, the most probable reason for the suppression of the RM effect is that the star is viewed nearly pole-on. This implies that the WASP-1 star has a high obliquity with respect to the edge-on planetary orbit. Because WASP-2 is a K1V star, and is expected to be a slow rotator, no firm conclusion can be drawn about the stellar obliquity. Our data and our analysis contradict an earlier claim that WASP-2b has a retrograde orbit, thereby revoking this system's status as an exception to the pattern that cool stars have low obliquities.", "date": "2011-09-01", "date_type": "published", "publication": "Astrophysical Journal", "volume": "738", "number": "1", "publisher": "American Astronomical Society", "pagerange": "Art. No. 50", "id_number": "CaltechAUTHORS:20110908-120943442", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20110908-120943442", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO)" }, { "agency": "NASA", "grant_number": "NNX09AD36G" } ] }, "doi": "10.1088/0004-637X/738/1/50", "primary_object": { "basename": "Albrecht2011p15679Astrophys_J.pdf", "url": "https://authors.library.caltech.edu/records/v21zh-s2b83/files/Albrecht2011p15679Astrophys_J.pdf" }, "resource_type": "article", "pub_year": "2011", "author_list": "Albrecht, Simon; Winn, Joshua N.; et el." }, { "id": "https://authors.library.caltech.edu/records/p5chc-fet92", "eprint_id": 27365, "eprint_status": "archive", "datestamp": "2023-08-22 03:33:13", "lastmod": "2023-10-24 17:05:57", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Bensby-T", "name": { "family": "Bensby", "given": "T." } }, { "id": "Ad\u00e9n-D", "name": { "family": "Ad\u00e9n", "given": "D." } }, { "id": "Mel\u00e9ndez-J", "name": { "family": "Mel\u00e9ndez", "given": "J." }, "orcid": "0000-0002-4933-2239" }, { "id": "Gould-A", "name": { "family": "Gould", "given": "A." } }, { "id": "Feltzing-S", "name": { "family": "Feltzing", "given": "S." } }, { "id": "Asplund-M", "name": { "family": "Asplund", "given": "M." } }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "J. A." }, "orcid": "0000-0001-9808-7172" }, { "id": "Lucatello-S", "name": { "family": "Lucatello", "given": "S." } }, { "id": "Yee-Jennifer-C", "name": { "family": "Yee", "given": "J. C." }, "orcid": "0000-0001-9481-7123" }, { "id": "Ram\u00edrez-I", "name": { "family": "Ram\u00edrez", "given": "I." } }, { "id": "Cohen-J-G", "name": { "family": "Cohen", "given": "J. G." }, "orcid": "0000-0002-8039-4673" }, { "id": "Thompson-I-B", "name": { "family": "Thompson", "given": "I." } }, { "id": "Bond-I-A", "name": { "family": "Bond", "given": "I. A." } }, { "id": "Gal-Yam-A", "name": { "family": "Gal-Yam", "given": "A." }, "orcid": "0000-0002-3653-5598" }, { "id": "Han-C", "name": { "family": "Han", "given": "C." } }, { "id": "Sumi-Takahiro", "name": { "family": "Sumi", "given": "T." } }, { "id": "Suzuki-Daisuke", "name": { "family": "Suzuki", "given": "D." }, "orcid": "0000-0002-5843-9433" }, { "id": "Wada-K", "name": { "family": "Wada", "given": "K." } }, { "id": "Miyake-N", "name": { "family": "Miyake", "given": "N." } }, { "id": "Furusawa-K", "name": { "family": "Furusawa", "given": "K." } }, { "id": "Ohmori-K", "name": { "family": "Ohmori", "given": "K." } }, { "id": "Saito-To", "name": { "family": "Saito", "given": "To." } }, { "id": "Tristram-P-J", "name": { "family": "Tristram", "given": "P." } }, { "id": "Bennett-D-P", "name": { "family": "Bennett", "given": "D." }, "orcid": "0000-0001-8043-8413" } ] }, "title": "Chemical evolution of the Galactic bulge as traced by microlensed dwarf and subgiant stars. IV. Two bulge populations", "ispublished": "pub", "full_text_status": "public", "keywords": "gravitational lensing: micro; Galaxy: bulge; Galaxy: formation; Galaxy: evolution; stars: abundances", "note": "\u00a9 2011 ESO. \n\nReceived: 11 April 2011. Accepted: 26 July 2011. Published online 15 September 2011. \n\nBased on observations made with the European Southern Observatory telescopes (84.B-0837, 85.B-0399, and 86.B-0757). This paper also includes data gathered with the 6.5 m Magellan Telescopes located at the Las Campanas Observatory, Chile, and data obtained at the W. M. Keck Observatory, which is operated as a scientific partnership among the California Institute of Technology, the University of California and the National Aeronautics and Space Administration. \n\nT.B. was funded by grant No. 621-2009-3911 from The Swedish Research Council. S.F. was partly funded by the Swedish Royal Academy of Sciences and partly by grant No. 2008-4095 from The Swedish Research Council. Work by A.G. was supported by NSF Grant AST 0757888. A.G.-Y. is supported by the Israeli Science Foundation, an EU Seventh Framework Programme Marie Curie IRG fellowship and the Benoziyo Center for Astrophysics, a research grant from the Peter and Patricia Gruber Awards, and the William Z. and Eda Bess Novick New Scientists Fund at the Weizmann Institute. S.L. research was partially supported by the DFG cluster of excellence \"Origin and Structure of the Universe\". J.M. thanks support from FAPESP (2010/50930-6), USP (Novos Docentes) and CNPq (Bolsa de produtividade). J.G.C. was supported in part by NSF grant AST-0908139. J.C.Y. is supported by an NSF Graduate Research Fellowship. Work by C.H. was supported by the grant from National Research Foundation of Korea (2009-0081561). T.S. is supported by JSPS20740104 and JSPS23340044. The MOA project is funded by JSPS20340052, JSPS22403003, and JSPS23340064. We would like to thank Bengt Gustafsson, Bengt Edvardsson, and Kjell Eriksson for usage of the MARCS model atmosphere program and their suite of stellar abundance programs. Finally, we thank anonymous referee for many and valuable comments.\n\nPublished - Bensby2011p16097Astron_Astrophys.pdf
Accepted Version - 1107.5606.pdf
", "abstract": "Based on high-resolution (R \u2248 42 000 to 48 000) and high signal-to-noise (S/N \u2248 50 to 150) spectra obtained with UVES/VLT, we present detailed elemental abundances (O, Na, Mg, Al, Si, Ca, Ti, Cr, Fe, Ni, Zn, Y, and Ba) and stellar ages for 12 new microlensed dwarf and subgiant stars in the Galactic bulge. Including previous microlensing events, the sample of homogeneously analysed bulge dwarfs has now grown to 26. The analysis is based on equivalent width measurements and standard 1-D LTE MARCS model stellar atmospheres. We also present NLTE Li abundances based on line synthesis of the ^7Li line at 670.8\u2009nm. The results from the 26 microlensed dwarf and subgiant stars show that the bulge metallicity distribution (MDF) is double-peaked; one peak at [Fe/H] \u2248 \u22120.6 and one at [Fe/H] \u2248 + 0.3, and with a dearth of stars around solar metallicity. This is in contrast to the MDF derived from red giants in Baade's window, which peaks at this exact value. A simple significance test shows that it is extremely unlikely to have such a gap in the microlensed dwarf star MDF if the dwarf stars are drawn from the giant star MDF. To resolve this issue we discuss several possibilities, but we can not settle on a conclusive solution for the observed differences. We further find that the metal-poor bulge dwarf stars arepredominantly old with ages greater than 10\u2009Gyr, while the metal-rich bulge dwarf stars show a wide range of ages. The metal-poor bulge sample is very similar to the Galactic thick disk in terms of average metallicity, elemental abundance trends, and stellar ages. Speculatively, the metal-rich bulge population might be the manifestation of the inner thin disk. If so, the two bulge populations could support the recent findings, based on kinematics, that there are no signatures of a classical bulge and that the Milky Way is a pure-disk galaxy. Also, recent claims of a flat IMF in the bulge based on the MDF of giant stars may have to be revised based on the MDF and abundance trends probed by our microlensed dwarf stars.", "date": "2011-09", "date_type": "published", "publication": "Astronomy and Astrophysics", "volume": "533", "publisher": "EDP Sciences", "pagerange": "Art. No. A134", "id_number": "CaltechAUTHORS:20111024-091002541", "issn": "0004-6361", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20111024-091002541", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "Swedish Research Council", "grant_number": "621-2009-3911" }, { "agency": "Swedish Royal Academy of Sciences", "grant_number": "2008-4095" }, { "agency": "NSF", "grant_number": "AST-0757888" }, { "agency": "Israel Science Foundation" }, { "agency": "Marie Curie Fellowship" }, { "agency": "Benoziyo Center for Astrophysics" }, { "agency": "Peter and Patricia Gruber Awards" }, { "agency": "Deutsche Forschungsgemeinschaft (DFG)" }, { "agency": "Funda\u00e7\u00e3o de Amparo \u00e0 Pesquisa do Estado de S\u00e3o Paulo (FAPESP)", "grant_number": "2010/50930-6" }, { "agency": "Universidade de S\u00e3o Paulo" }, { "agency": "Conselho Nacional de Desenvolvimento Cient\u00edfico e Tecnol\u00f3gico (CNPq)" }, { "agency": "NSF", "grant_number": "AST-0908139" }, { "agency": "NSF Graduate Research Fellowship" }, { "agency": "National Research Foundation of Korea", "grant_number": "2009-0081561" }, { "agency": "Japan Society for the Promotion of Science (JSPS)", "grant_number": "JSPS20740104" }, { "agency": "Japan Society for the Promotion of Science (JSPS)", "grant_number": "JSPS23340044" }, { "agency": "Japan Society for the Promotion of Science (JSPS)", "grant_number": "JSPS20340052" }, { "agency": "Japan Society for the Promotion of Science (JSPS)", "grant_number": "JSPS22403003" }, { "agency": "Japan Society for the Promotion of Science (JSPS)", "grant_number": "JSPS23340064" } ] }, "doi": "10.1051/0004-6361/201117059", "primary_object": { "basename": "1107.5606.pdf", "url": "https://authors.library.caltech.edu/records/p5chc-fet92/files/1107.5606.pdf" }, "related_objects": [ { "basename": "Bensby2011p16097Astron_Astrophys.pdf", "url": "https://authors.library.caltech.edu/records/p5chc-fet92/files/Bensby2011p16097Astron_Astrophys.pdf" } ], "resource_type": "article", "pub_year": "2011", "author_list": "Bensby, T.; Ad\u00e9n, D.; et el." }, { "id": "https://authors.library.caltech.edu/records/4ae1d-kvt80", "eprint_id": 25454, "eprint_status": "archive", "datestamp": "2023-08-22 03:31:08", "lastmod": "2023-10-24 15:53:05", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Kipping-D-M", "name": { "family": "Kipping", "given": "D. M." } }, { "id": "Hartman-J", "name": { "family": "Hartman", "given": "J." } }, { "id": "Bakos-G-\u00c1", "name": { "family": "Bakos", "given": "G. \u00c1." }, "orcid": "0000-0001-7204-6727" }, { "id": "Torres-G", "name": { "family": "Torres", "given": "G." }, "orcid": "0000-0002-5286-0251" }, { "id": "Latham-D-W", "name": { "family": "Latham", "given": "D. W." }, "orcid": "0000-0001-9911-7388" }, { "id": "Bayliss-D", "name": { "family": "Bayliss", "given": "D." }, "orcid": "0000-0001-6023-1335" }, { "id": "Kiss-L-L", "name": { "family": "Kiss", "given": "L. L." } }, { "id": "Sato-Bun'ei", "name": { "family": "Sato", "given": "B." } }, { "id": "B\u00e9ky-B", "name": { "family": "B\u00e9ky", "given": "B." } }, { "id": "Kov\u00e1cs-G", "name": { "family": "Kov\u00e1cs", "given": "G\u00e9za" } }, { "id": "Quinn-S-N", "name": { "family": "Quinn", "given": "S. N." }, "orcid": "0000-0002-8964-8377" }, { "id": "Buchhave-L-A", "name": { "family": "Buchhave", "given": "L. A." }, "orcid": "0000-0003-1605-5666" }, { "id": "Andersen-J", "name": { "family": "Andersen", "given": "J." } }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "G. W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "A. W." }, "orcid": "0000-0001-8638-0320" }, { "id": "Fischer-D-A", "name": { "family": "Fischer", "given": "D. A." }, "orcid": "0000-0003-2221-0861" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "J. A." }, "orcid": "0000-0001-9808-7172" }, { "id": "Noyes-R-W", "name": { "family": "Noyes", "given": "R. W." } }, { "id": "Sasselov-D-D", "name": { "family": "Sasselov", "given": "D. D." }, "orcid": "0000-0001-7014-1771" }, { "id": "Stefanik-R-P", "name": { "family": "Stefanik", "given": "R. P." } }, { "id": "L\u00e1z\u00e1r-J", "name": { "family": "L\u00e1z\u00e1r", "given": "J." } }, { "id": "Papp-I", "name": { "family": "Papp", "given": "I." } }, { "id": "S\u00e1ri-P", "name": { "family": "S\u00e1ri", "given": "P." } }, { "id": "F\u0171r\u00e9sz-G", "name": { "family": "F\u0171r\u00e9sz", "given": "G." } } ] }, "title": "HAT-P31bc:A Transiting, Eccentric, Hot Jupiter and a Long-Period, Massive Third Body", "ispublished": "pub", "full_text_status": "public", "keywords": "planetary systems; stars: individual (HAT-P-31, GSC 2099-00908); techniques: photometric; techniques: spectroscopic", "note": "\u00a9 2011 The American Astronomical Society. Received 2011 June 6; accepted 2011 July 2; published 2011 August 16. \nBased in part on observations obtained at the W. M. Keck Observatory,\nwhich is operated by the University of California and the California Institute of\nTechnology. Keck time has been granted by NASA (N167Hr). Based in part on\ndata collected at Subaru Telescope, which is operated by the National\nAstronomical Observatory of Japan. Based in part on observations made with\nthe Nordic Optical Telescope, operated on the island of La Palma jointly by\nDenmark, Finland, Iceland, Norway, and Sweden, in the Spanish Observatorio\ndel Roque de los Muchachos of the Instituto de Astrofisica de Canarias.\n\nHATNet operations have been funded by NASA grants\nNNG04GN74G, NNX08AF23G, and SAO IR&D grants. D.M.K. has been supported by Smithsonian Institution Restricted\nEndowment Funds. Work of G. \u00c1. B. and J. Johnson\nwere supported by the Postdoctoral Fellowship of the NSF Astronomy and Astrophysics Program (AST-0702843 and AST-0702821, respectively). G.T. acknowledges partial support from NASA grant NNX09AF59G. We acknowledge partial support\nalso from the Kepler Mission under NASA Cooperative Agreement NCC2-1390 (D.W.L., PI). G.K. thanks the Hungarian Scientific Research Foundation (OTKA) for support through grant K-60750. L.L.K. is supported by the \"Lendulet\" Young Researchers Program of the Hungarian Academy of Sciences and\nthe Hungarian OTKA grants K76816, K83790, and MB08C\n81013. Tam\u00e1s Szalai (University of Szeged) is acknowledged\nfor his assistance during the ANU 2.3 m observations. This research has made use of Keck telescope time granted through\nNASA (N167Hr). This work is based in part on data collected\nat Subaru Telescope, which is operated by the National Astronomical Observatory of Japan, and in part on observations made with the Nordic Optical Telescope, operated on the island of La Palma jointly by Denmark, Finland, Iceland, Norway, and Sweden, in the Spanish Observatorio del Roque de los Muchachos of the Instituto de Astrofisica de Canarias. Thanks to G. Laughlin for useful advise on the Systemic Console, Dan Fabrycky and Ren\u00e9 Heller for useful comments, and special thanks to the anonymous referee for their helpful suggestions.\n\nPublished - Kipping2011p15920Astron_J.pdf
Submitted - 1106.1169v2
", "abstract": "We report the discovery of HAT-P-31b, a transiting exoplanet orbiting the V = 11.660 dwarf star GSC 2099-00908. HAT-P-31b is the first planet discovered with the Hungarian-made Automated Telescope (HAT) without any follow-up photometry, demonstrating the feasibility of a new mode of operation for the HATNet project. The 2.17 M_J , 1.1 R_J planet has a period of P_b = 5.0054 days and maintains an unusually high eccentricity of e_b = 0.2450 \u00b1 0.0045, determined through Keck, FIbr-fed \u00c9chelle Spectrograph, and Subaru high-precision radial velocities (RVs). Detailed modeling of the RVs indicates an additional quadratic residual trend in the data detected to very high confidence. We interpret this trend as a long-period outer companion, HAT-P-31c, of minimum mass 3.4 M_J and period \u22652.8 years. Since current RVs span less than half an orbital period, we are unable to determine the properties of HAT-P-31c to high confidence. However, dynamical simulations of two possible configurations show that orbital stability is to be expected. Further, if HAT-P-31c has non-zero eccentricity, our simulations show that the eccentricity of HAT-P-31b is actively driven by the presence of c, making HAT-P-31 a potentially intriguing dynamical laboratory.", "date": "2011-09", "date_type": "published", "publication": "Astronomical Journal", "volume": "142", "number": "3", "publisher": "American Astronomical Society", "pagerange": "Art. No. 95", "id_number": "CaltechAUTHORS:20110927-145207028", "issn": "0004-6256", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20110927-145207028", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNG04GN74G" }, { "agency": "NASA", "grant_number": "NNX08AF23G" }, { "agency": "Smithsonian Astrophysical Observatory" }, { "agency": "Smithsonian Institution" }, { "agency": "NSF", "grant_number": "AST-0702843" }, { "agency": "NSF", "grant_number": "AST-0702821" }, { "agency": "NASA", "grant_number": "NNX09AF59G" }, { "agency": "NASA", "grant_number": "NCC2-1390" }, { "agency": "Hungarian Scientific Research Fund (OTKA)", "grant_number": "K-60750" }, { "agency": "Hungarian Scientific Research Fund (OTKA)", "grant_number": "K76816" }, { "agency": "Hungarian Scientific Research Fund (OTKA)", "grant_number": "K83790" }, { "agency": "Hungarian Scientific Research Fund (OTKA)", "grant_number": "MB08C 81013" }, { "agency": "Hungarian Academy of Sciences" } ] }, "doi": "10.1088/0004-6256/142/3/95", "primary_object": { "basename": "1106.1169v2", "url": "https://authors.library.caltech.edu/records/4ae1d-kvt80/files/1106.1169v2" }, "related_objects": [ { "basename": "Kipping2011p15920Astron_J.pdf", "url": "https://authors.library.caltech.edu/records/4ae1d-kvt80/files/Kipping2011p15920Astron_J.pdf" } ], "resource_type": "article", "pub_year": "2011", "author_list": "Kipping, D. M.; Hartman, J.; et el." }, { "id": "https://authors.library.caltech.edu/records/nfp25-2z349", "eprint_id": 24311, "eprint_status": "archive", "datestamp": "2023-08-19 07:24:39", "lastmod": "2023-10-23 20:27:39", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" }, { "id": "Morton-T-D", "name": { "family": "Morton", "given": "T. D." }, "orcid": "0000-0002-8537-5711" }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "A. W." }, "orcid": "0000-0001-8638-0320" } ] }, "title": "HAT-P-30b: A Transiting Hot Jupiter on a Highly Oblique Orbit", "ispublished": "pub", "full_text_status": "public", "note": "\u00a9 2011 American Astronomical Society. Received 2011 March 19; accepted 2011 April 10; published 2011 June 10. \nBased in part on observations obtained at the W. M. Keck Observatory,\nwhich is operated by the University of California and the California Institute of\nTechnology. Keck time has been granted by NASA (N167Hr). Based in part on\ndata collected at Subaru Telescope, which is operated by the National\nAstronomical Observatory of Japan.\n\nHATNet operations have been funded by NASA grants NNG04GN74G and NNX08AF23G and SAO IR&D grants. G.T. acknowledges partial support from NASA grant NNX09AF59G. We acknowledge partial support also from the Kepler Mission under NASA Cooperative Agreement NCC2-1390 (PI: D.W.L.). G.K. thanks the Hungarian Scientific Research Foundation (OTKA) for support through\ngrant K-81373. This research has made use of Keck telescope time granted through NASA (N167Hr). Based in part on data collected at Subaru Telescope, which is operated by the National Astronomical Observatory of Japan.\n\nPublished - Johnson2011p14381Astrophys_J.pdf
", "abstract": "We report the discovery of HAT-P-30b, a transiting exoplanet orbiting the V = 10.419 dwarf star GSC 0208-00722. The planet has a period P = 2.810595 \u00b1 0.000005 days, transit epoch Tc = 2455456.46561 \u00b1 0.00037 (BJD), and transit duration 0.0887 \u00b1 0.0015 days. The host star has a mass of 1.24 \u00b1 0.04 M_\u2299, radius of 1.21 \u00b1 0.05 R_\u2299, effective temperature of 6304 \u00b1 88 K, and metallicity [Fe/H] = +0.13 \u00b1 0.08. The planetary companion has a mass of 0.711 \u00b1 0.028 M J and radius of 1.340 \u00b1 0.065 R J yielding a mean density of 0.37 \u00b1 0.05 g cm^(\u20133). We also present radial velocity measurements that were obtained throughout a transit that exhibit the Rossiter-McLaughlin effect. By modeling this effect, we measure an angle of \u03bb = 73.\u00b05 \u00b1 9.\u00b00 between the sky projections of the planet's orbit normal and the star's spin axis. HAT-P-30b represents another example of a close-in planet on a highly tilted orbit, and conforms to the previously noted pattern that tilted orbits are more common around stars with T_(eff*) \u2273 6250 K.", "date": "2011-07-01", "date_type": "published", "publication": "Astrophysical Journal", "volume": "735", "number": "1", "publisher": "American Astronomical Society", "pagerange": "Art. No. 24", "id_number": "CaltechAUTHORS:20110706-090138293", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20110706-090138293", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNG04GN74G" }, { "agency": "NASA", "grant_number": "NNX08AF23G" }, { "agency": "NASA", "grant_number": "NNX09AF59G" }, { "agency": "NASA", "grant_number": "NCC2-1390" }, { "agency": "Hungarian Scientific Research Foundation (OTKA)", "grant_number": "K-81373" }, { "agency": "NASA", "grant_number": "N167Hr" } ] }, "doi": "10.1088/0004-637X/735/1/24", "primary_object": { "basename": "Johnson2011p14381Astrophys_J.pdf", "url": "https://authors.library.caltech.edu/records/nfp25-2z349/files/Johnson2011p14381Astrophys_J.pdf" }, "resource_type": "article", "pub_year": "2011", "author_list": "Johnson, John Asher; Morton, T. D.; et el." }, { "id": "https://authors.library.caltech.edu/records/fympr-0ev31", "eprint_id": 24198, "eprint_status": "archive", "datestamp": "2023-08-22 02:57:13", "lastmod": "2023-10-23 20:22:48", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "B\u00e9ky-B", "name": { "family": "B\u00e9ky", "given": "B." } }, { "id": "Bakos-G-\u00c1", "name": { "family": "Bakos", "given": "G. \u00c1." }, "orcid": "0000-0001-7204-6727" }, { "id": "Hartman-J", "name": { "family": "Hartman", "given": "J." } }, { "id": "Torres-G", "name": { "family": "Torres", "given": "G." }, "orcid": "0000-0002-5286-0251" }, { "id": "Latham-D-W", "name": { "family": "Latham", "given": "D. W." }, "orcid": "0000-0001-9911-7388" }, { "id": "Jord\u00e1n-A", "name": { "family": "Jord\u00e1n", "given": "A." } }, { "id": "Arriagada-P", "name": { "family": "Arriagada", "given": "P." } }, { "id": "Bayliss-D", "name": { "family": "Bayliss", "given": "D." }, "orcid": "0000-0001-6023-1335" }, { "id": "Kiss-L-L", "name": { "family": "Kiss", "given": "L. L." } }, { "id": "Kov\u00e1cs-G", "name": { "family": "Kov\u00e1cs", "given": "G\u00e9za" } }, { "id": "Quinn-S-N", "name": { "family": "Quinn", "given": "S. N." }, "orcid": "0000-0002-8964-8377" }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "G. W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "A. W." }, "orcid": "0000-0001-8638-0320" }, { "id": "Fischer-D-A", "name": { "family": "Fischer", "given": "D. A." }, "orcid": "0000-0003-2221-0861" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "J. A." }, "orcid": "0000-0001-9808-7172" }, { "id": "Esquerdo-G-A", "name": { "family": "Esquerdo", "given": "G. A." }, "orcid": "0000-0002-9789-5474" }, { "id": "Noyes-R-W", "name": { "family": "Noyes", "given": "R. W." } }, { "id": "Buchhave-L-A", "name": { "family": "Buchhave", "given": "L. A." }, "orcid": "0000-0003-1605-5666" }, { "id": "Sasselov-D-D", "name": { "family": "Sasselov", "given": "D. D." }, "orcid": "0000-0001-7014-1771" }, { "id": "Stefanik-R-P", "name": { "family": "Stefanik", "given": "R. P." } }, { "id": "Perumpilly-G", "name": { "family": "Perumpilly", "given": "G." } }, { "id": "L\u00e1z\u00e1r-J", "name": { "family": "L\u00e1z\u00e1r", "given": "J." } }, { "id": "Papp-I", "name": { "family": "Papp", "given": "I." } }, { "id": "S\u00e1ri-P", "name": { "family": "S\u00e1ri", "given": "P." } } ] }, "title": "HAT-P-27b: A Hot Jupiter Transiting a G Star on a 3 Day Orbit", "ispublished": "pub", "full_text_status": "public", "keywords": "planetary systems; stars: individual (HAT-P-27, GSC 0333-00351); techniques: photometric; techniques: spectroscopic", "note": "\u00a9 2011 American Astronomical Society.\n\nReceived 2011 January 18; accepted 2011 April 8; published 2011 June 3.\nBased in part on observations obtained at the W. M. Keck Observatory,\nwhich is operated by the University of California and the California Institute of\nTechnology. Keck time has been granted by NOAO (A201Hr) and NASA\n(N018Hr, N167Hr).\nHATNet operations have been funded by NASA grants\nNNG04GN74G, NNX08AF23G, and SAO IR&D grants. Work of G. \u00c1. B. was supported by the Postdoctoral Fellowship of the NSF Astronomy and Astrophysics Program AST-0702843. G.T.\nacknowledges partial support from NASA grant NNX09AF59G.\nA.J. acknowledges support from Fondecyt project 1095213,\nBASAL CATA PFB-06, FONDAP CFA 15010003, MIDEPLAN ICM Nucleus P07-021-F, and Anillo ACT-086. G.K. thanks the Hungarian Scientific Research Foundation (OTKA) for support through grant K-81373. L.L.K. is supported by the \"Lend\u00fclet\" Young Researchers Program of the Hungarian\nAcademy of Sciences and the Hungarian OTKA grants K76816, K83790 and MB08C 81013. Tam\u00e1s Szalai (University of Szeged) is acknowledged for his assistance during the\nANU 2.3 m observations. We also acknowledge partial support\nfrom the Kepler Mission under NASA Cooperative Agreement\nNCC2-1390 (D.W.L., PI). This research has made use of Keck\ntelescope time granted through NOAO (A201Hr) and NASA\n(N018Hr, N167Hr). We also thank Mount Stromlo Observatory\nand Siding Spring Observatory for the ANU 2.3 m telescope\ntime.\n\nPublished - Beky2011p14306Astrophys_J.pdf
", "abstract": "We report the discovery of HAT-P-27b, an exoplanet transiting the moderately bright G8 dwarf star GSC 0333-00351 (V = 12.214). The orbital period is 3.039586 \u00b1 0.000012 days, the reference epoch of transit is 2455186.01879 \u00b1 0.00054 (BJD), and the transit duration is 0.0705 \u00b1 0.0019 days. The host star with its effective temperature 5300 \u00b1 90 K is somewhat cooler than the Sun and is more metal-rich with a metallicity of +0.29 \u00b1 0.10. Its mass is 0.94 \u00b1 0.04 M_\u2609 and radius is 0.90^(+0.05)_(\u20130.04) R_\u2609. For the planetary companion we determine a mass of 0.660 \u00b1 0.033 M_J and radius of 1.038^(+0.077)_(\u20130.058) R_J. For the 30 known transiting exoplanets between 0.3 M_J and 0.8 M_J, a negative correlation between host star metallicity and planetary radius and an additional dependence of planetary radius on equilibrium temperature are confirmed at a high level of statistical significance.", "date": "2011-06-20", "date_type": "published", "publication": "Astrophysical Journal", "volume": "734", "number": "2", "publisher": "American Astronomical Society", "pagerange": "Art. No. 109", "id_number": "CaltechAUTHORS:20110624-094924045", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20110624-094924045", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNG04GN74G" }, { "agency": "NASA", "grant_number": "NNX08AF23G" }, { "agency": "Smithsonian Astrophysical Observatory" }, { "agency": "NSF", "grant_number": "AST-0702843" }, { "agency": "NASA", "grant_number": "NNX09AF59G" }, { "agency": "Fondo Nacional de Desarrollo Cient\u00edfico y Tecnol\u00f3gico (FONDECYT)", "grant_number": "1095213" }, { "agency": "Basal-CATA", "grant_number": "PFB-06/2007" }, { "agency": "Fondo de Financiamiento de Centros de Investigaci\u00f3n en \u00c1reas Prioritarias (FONDAP)", "grant_number": "15010003" }, { "agency": "MIDEPLAN ICM Nucleus", "grant_number": "P07-021-F" }, { "agency": "Anillo", "grant_number": "ACT-086" }, { "agency": "Hungarian Scientific Research Fund (OTKA)" } ] }, "doi": "10.1088/0004-637X/734/2/109", "primary_object": { "basename": "Beky2011p14306Astrophys_J.pdf", "url": "https://authors.library.caltech.edu/records/fympr-0ev31/files/Beky2011p14306Astrophys_J.pdf" }, "resource_type": "article", "pub_year": "2011", "author_list": "B\u00e9ky, B.; Bakos, G. \u00c1.; et el." }, { "id": "https://authors.library.caltech.edu/records/8rns5-a6r29", "eprint_id": 23918, "eprint_status": "archive", "datestamp": "2023-08-22 02:53:18", "lastmod": "2023-10-23 20:09:18", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Crepp-J-R", "name": { "family": "Crepp", "given": "Justin R." }, "orcid": "0000-0003-0800-0593" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" } ] }, "title": "Estimates of the Planet Yield from Ground-based High-contrast Imaging Observations as a Function of Stellar Mass", "ispublished": "pub", "full_text_status": "public", "keywords": "planetary systems; methods: numerical; methods: statistical", "note": "\u00a9 2011 The American Astronomical Society. Received 2010 June 21; accepted 2011 April 19; published 2011 May 16. We are grateful for discussions with Ruslan Belikov, whose\nquestions during the Sagan symposium in Pasadena motivated\nus to perform this study. We thank Chas Beichman, Kelly\nPlummer, and Dennis Wittman for support using the Bluedot\nsuper-computing cluster at NExScI, and Eric Nielsen for helpful conversations about Monte Carlo simulations. Brendan Bowler, Adam Kraus, Lynne Hillenbrand, Sasha Hinkley, and Eric Nielsen read an early draft of this manuscript and provided valuable feedback that improved the presentation of our results. We thank Jessica Lu, John Carpenter, and the anonymous referee for additional helpful comments. This study made use of the NStED database.\n\nPublished - Crepp2011p14047Astrophys_J.pdf
", "abstract": "We use Monte Carlo simulations to estimate the number of extrasolar planets that are directly detectable in the solar neighborhood using current and forthcoming high-contrast imaging instruments. Our calculations take into consideration the important factors that govern the likelihood for imaging a planet, including the statistical properties of stars in the solar neighborhood, correlations between star and planet properties, observational effects, and selection criteria. We consider several different ground-based surveys, both biased and unbiased, and express the resulting planet yields as a function of stellar mass. Selecting targets based on their youth and visual brightness, we find that strong correlations between star mass and planet properties are required to reproduce high-contrast imaging results to date (i.e., HR 8799, \u03b2 Pic). Using the most recent empirical findings for the occurrence rate of gas-giant planets from radial velocity (RV) surveys, our simulations indicate that naive extrapolation of the Doppler planet population to semimajor axes accessible to high-contrast instruments provides an excellent agreement between simulations and observations using present-day contrast levels. In addition to being intrinsically young and sufficiently bright to serve as their own beacon for adaptive optics correction, A-stars have a high planet occurrence rate and propensity to form massive planets in wide orbits, making them ideal targets. The same effects responsible for creating a multitude of detectable planets around massive stars conspire to reduce the number orbiting low-mass stars. However, in the case of a young stellar cluster, where targets are approximately the same age and situated at roughly the same distance, MK-stars can easily dominate the number of detections because of an observational bias related to small number statistics. The degree to which low-mass stars produce the most planet detections in this special case depends upon whether multiple formation mechanisms are at work. Upon relaxing our assumption that planets in ultra-wide (a > 100 AU) orbits resemble the RV sample, our simulations suggest that the companions found orbiting late-type stars (AB Pic, 1RXSJ1609, GSC 06214, etc.) are consistent with a formation channel distinct from that of RV planets. These calculations explain why planets have thus far been imaged preferentially around A-stars and K-, M-stars, but no spectral types in between, despite concerted efforts targeting F-, G-stars.", "date": "2011-06-01", "date_type": "published", "publication": "Astrophysical Journal", "volume": "733", "number": "2", "publisher": "American Astronomical Society", "pagerange": "Art. No. 126", "id_number": "CaltechAUTHORS:20110607-074910517", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20110607-074910517", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "doi": "10.1088/0004-637X/733/2/126", "primary_object": { "basename": "Crepp2011p14047Astrophys_J.pdf", "url": "https://authors.library.caltech.edu/records/8rns5-a6r29/files/Crepp2011p14047Astrophys_J.pdf" }, "resource_type": "article", "pub_year": "2011", "author_list": "Crepp, Justin R. and Johnson, John Asher" }, { "id": "https://authors.library.caltech.edu/records/ab23t-pen95", "eprint_id": 23910, "eprint_status": "archive", "datestamp": "2023-08-22 02:53:12", "lastmod": "2023-10-23 20:08:50", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Buchhave-L-A", "name": { "family": "Buchhave", "given": "L. A." }, "orcid": "0000-0003-1605-5666" }, { "id": "Bakos-G-\u00c1", "name": { "family": "Bakos", "given": "G. \u00c1." }, "orcid": "0000-0001-7204-6727" }, { "id": "Hartman-J-D", "name": { "family": "Hartman", "given": "J. D." }, "orcid": "0000-0001-8732-6166" }, { "id": "Torres-G", "name": { "family": "Torres", "given": "G." }, "orcid": "0000-0002-5286-0251" }, { "id": "Latham-D-W", "name": { "family": "Latham", "given": "D. W." }, "orcid": "0000-0001-9911-7388" }, { "id": "Andersen-J", "name": { "family": "Andersen", "given": "J." } }, { "id": "Kov\u00e1cs-G", "name": { "family": "Kov\u00e1cs", "given": "G." } }, { "id": "Noyes-R-W", "name": { "family": "Noyes", "given": "R. W." } }, { "id": "Shporer-A", "name": { "family": "Shporer", "given": "A." }, "orcid": "0000-0002-1836-3120" }, { "id": "Esquerdo-G-A", "name": { "family": "Esquerdo", "given": "G. A." }, "orcid": "0000-0002-9789-5474" }, { "id": "Fischer-D-A", "name": { "family": "Fischer", "given": "D. A." }, "orcid": "0000-0003-2221-0861" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "J. A." }, "orcid": "0000-0001-9808-7172" }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "G. W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "A. W." }, "orcid": "0000-0001-8638-0320" }, { "id": "B\u00e9ky-B", "name": { "family": "B\u00e9ky", "given": "B." } }, { "id": "Sasselov-D-D", "name": { "family": "Sasselov", "given": "D. D." }, "orcid": "0000-0001-7014-1771" }, { "id": "F\u0171r\u00e9sz-G", "name": { "family": "F\u0171r\u00e9sz", "given": "G." } }, { "id": "Quinn-S-N", "name": { "family": "Quinn", "given": "S. N." }, "orcid": "0000-0002-8964-8377" }, { "id": "Stefanik-R-P", "name": { "family": "Stefanik", "given": "R. P." } }, { "id": "Szklen\u00e1r-T", "name": { "family": "Szklen\u00e1r", "given": "T." } }, { "id": "Berlind-P", "name": { "family": "Berlind", "given": "P." } }, { "id": "Calkins-M-L", "name": { "family": "Calkins", "given": "M. L." }, "orcid": "0000-0002-2830-5661" }, { "id": "L\u00e1z\u00e1r-J", "name": { "family": "L\u00e1z\u00e1r", "given": "J." } }, { "id": "Papp-I", "name": { "family": "Papp", "given": "I." } }, { "id": "S\u00e1ri-P", "name": { "family": "S\u00e1ri", "given": "P." } } ] }, "title": "Hat-P-28b and Hat-P-29b: Two Sub-Jupiter Mass Transiting Planets", "ispublished": "pub", "full_text_status": "public", "keywords": "planetary systems; stars: individual (HAT-P-28, GSC 2284-00503, HAT-P-29, GSC 3293-01539); techniques: photometric; techniques: spectroscopic", "note": "\u00a9 2011 The American Astronomical Society. Received 2011 January 17; accepted 2011 March 24; published 2011 May 16. \n\nBased in part on observations made with the Nordic Optical Telescope,\noperated on the island of La Palma jointly by Denmark, Finland, Iceland,\nNorway, and Sweden, in the Spanish Observatorio del Roque de los\nMuchachos of the Instituto de Astrofisica de Canarias.\nBased in part on observations obtained at the W. M. Keck Observatory,\nwhich is operated by the University of California and the California Institute of\nTechnology. Keck time has been granted by NOAO (A201Hr) and NASA\n(N018Hr, N167Hr).\n\nHATNet operations have been funded by NASA grants\nNNG04GN74G, NNX08AF23G and SAO IR&D grants. Work\nof G.A\u00b4 .B. was supported by the Postdoctoral Fellowship of the\nNSF Astronomy and Astrophysics Program (AST-0702843 and\nAST-0702821, respectively). G.T. acknowledges partial support\nfrom NASA grant NNX09AF59G. We acknowledge partial\nsupport also from the Kepler mission under NASA Cooperative\nAgreement NCC2-1390 (PI: D.W.L.). G.K. thanks the\nHungarian Scientific Research Foundation (OTKA) for support\nthrough grant K-81373. This research has made use of Keck\ntelescope time granted through NOAO (program A201Hr) and\nNASA (N018Hr, N167Hr). This paper uses observations obtained\nwith facilities of the Las Cumbres Observatory Global\nTelescope and the Nordic Optical Telescope, operated on\nthe island of La Palma jointly by Denmark, Finland, Iceland,\nNorway, and Sweden, in the Spanish Observatorio del\nRoque de los Muchachos of the Instituto de Astrofisica de\nCanarias. We thank to Johan Fynbo for help on the distance\nestimate.\n\nPublished - Buchhave2011p14048Astrophys_J.pdf
", "abstract": "We present the discovery of two transiting exoplanets. HAT-P-28b orbits a V = 13.03 G3 dwarf star with a period P = 3.2572 days and has a mass of 0.63 \u00b1 0.04 M_J and a radius of 1.21^(+0.11)_(\u20130.08) R_J yielding a mean density of 0.44 \u00b1 0.09 g cm^(\u20133). HAT-P-29b orbits a V = 11.90 F8 dwarf star with a period P = 5.7232 days and has a mass of 0.78^(+0.08)_(\u20130.04) M_J and a radius of 1.11^(+0.14)_(\u20130.08) R_J yielding a mean density of 0.71 \u00b1 0.18 g cm^(\u20133). We discuss the properties of these planets in the context of other known transiting planets.", "date": "2011-06-01", "date_type": "published", "publication": "Astrophysical Journal", "volume": "733", "number": "2", "publisher": "American Astronomical Society", "pagerange": "Art. No. 116", "id_number": "CaltechAUTHORS:20110606-085236123", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20110606-085236123", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNG04GN74G" }, { "agency": "NASA", "grant_number": "NNX08AF23G" }, { "agency": "Smithsonian Astrophysical Observatory" }, { "agency": "NSF Astronomy and Astrophysics Fellowship", "grant_number": "AST-0702843" }, { "agency": "NSF Astronomy and Astrophysics Fellowship", "grant_number": "AST-0702821" }, { "agency": "NASA", "grant_number": "NNX09AF59G" }, { "agency": "NASA", "grant_number": "NCC2-1390" }, { "agency": "Hungarian Scientific Research Fund (OTKA)", "grant_number": "K-81373" }, { "agency": "National Optical Astronomy Observatory (NOAO)", "grant_number": "A201Hr" }, { "agency": "NASA", "grant_number": "N018Hr" }, { "agency": "NASA", "grant_number": "N167Hr" } ] }, "doi": "10.1088/0004-637X/733/2/116", "primary_object": { "basename": "Buchhave2011p14048Astrophys_J.pdf", "url": "https://authors.library.caltech.edu/records/ab23t-pen95/files/Buchhave2011p14048Astrophys_J.pdf" }, "resource_type": "article", "pub_year": "2011", "author_list": "Buchhave, L. A.; Bakos, G. \u00c1.; et el." }, { "id": "https://authors.library.caltech.edu/records/9jbtc-vvn75", "eprint_id": 37968, "eprint_status": "archive", "datestamp": "2023-08-22 02:41:34", "lastmod": "2023-10-23 19:36:43", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Church-R-P", "name": { "family": "Church", "given": "R. P." } }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "J. A." }, "orcid": "0000-0001-9808-7172" }, { "id": "Feltzing-S", "name": { "family": "Feltzing", "given": "S." } } ] }, "title": "Coordinates and 2MASS and OGLE identifications for all stars in Arp's 1965 finding chart for Baade's Window", "ispublished": "pub", "full_text_status": "public", "keywords": "catalogs; Galaxy: bulge; globular clusters: individual: NGC 6522", "note": "\u00a9 2011 ESO. Article published by EDP Sciences.\n\nReceived 4 March 2011; Accepted 23 March 2011.\nPublished online 12 April 2011.\nR.P.C. is funded by a Marie-Curie Intra-European Fellowship, grant No. 252431, under the European Commission's FP7 framework. J.A.J. acknowledges a guest professorship provided by the Faculty of Science, Lund University. S.F. was partly supported by grant No. 2008-4095\nfrom The Swedish Research Council. This research has made use of the SIMBAD database, operated at CDS, Strasbourg, France. This publication makes use of data products from the Two Micron All Sky Survey, which is a joint project of the University of Massachusetts and the Infrared Processing and Analysis Center/California Institute of Technology,\nfunded by the National Aeronautics and Space Administration and the National Science Foundation.\n\nPublished - aa16829-11.pdf
", "abstract": "Aims. We seek to provide 2MASS and OGLE identifications and coordinates for all stars in the finding chart published by Arp\u2009(1965, ApJ, 141, 43). This chart covers the low extinction area around NGC\u20096522, also known as Baade's window, at coordinates (l,b) = (1.02, \u22123.92).\n\nMethods. A cross correlation, using numerical techniques, was performed between a scan of the original finding chart from Arp and 2MASS and OGLE-II images and stellar coordinates.\n\nResults. We provide coordinates for all stars in Arp's finding chart and 2MASS and OGLE identifications wherever possible. Two identifications in quadrant II do not appear in the original finding chart.", "date": "2011-05", "date_type": "published", "publication": "Astronomy and Astrophysics", "volume": "529", "publisher": "EDP Sciences", "pagerange": "Art. No. A104", "id_number": "CaltechAUTHORS:20130416-105330718", "issn": "0004-6361", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20130416-105330718", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "European Commission FP7 Marie-Curie Intra-European Fellowship", "grant_number": "252431" }, { "agency": "Lund University Faculty of Science" }, { "agency": "Swedish Research Council", "grant_number": "2008-4095" }, { "agency": "NASA" }, { "agency": "NSF" } ] }, "doi": "10.1051/0004-6361/201116829", "primary_object": { "basename": "aa16829-11.pdf", "url": "https://authors.library.caltech.edu/records/9jbtc-vvn75/files/aa16829-11.pdf" }, "resource_type": "article", "pub_year": "2011", "author_list": "Church, R. P.; Johnson, J. A.; et el." }, { "id": "https://authors.library.caltech.edu/records/3pgdn-gq908", "eprint_id": 23328, "eprint_status": "archive", "datestamp": "2023-08-22 02:27:35", "lastmod": "2023-10-23 19:00:44", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" }, { "id": "Apps-K", "name": { "family": "Apps", "given": "Kevin" } }, { "id": "Gazak-J-Z", "name": { "family": "Gazak", "given": "J. Zachary" } }, { "id": "Crepp-J-R", "name": { "family": "Crepp", "given": "Justin R." }, "orcid": "0000-0003-0800-0593" }, { "id": "Crossfield-I-J-M", "name": { "family": "Crossfield", "given": "Ian J." }, "orcid": "0000-0002-1835-1891" }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "Andrew W." }, "orcid": "0000-0001-8638-0320" }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "Geoff W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Morton-T-D", "name": { "family": "Morton", "given": "Timothy D." }, "orcid": "0000-0002-8537-5711" }, { "id": "Chubak-C", "name": { "family": "Chubak", "given": "Carly" } }, { "id": "Isaacson-H-T", "name": { "family": "Isaacson", "given": "Howard" }, "orcid": "0000-0002-0531-1073" } ] }, "title": "LHS 6343 C: A Transiting Field Brown Dwarf Discovered by the Kepler Mission", "ispublished": "pub", "full_text_status": "public", "keywords": "binaries: eclipsing; binaries: spectroscopic; brown dwarfs; stars: fundamental parameters; stars: low-mass; techniques: photometric; techniques: radial velocities", "note": "\u00a9 2011 American Astronomical Society. \n\nReceived 2010 September 8; accepted 2011 January 18; published 2011 March 8. \n\n\nBased on observations obtained at the W. M. Keck Observatory, which is\noperated jointly by the University of California and the California Institute of\nTechnology. Keck time has been granted by Caltech, the University of\nCalifornia, and NASA.\n\nWe thank Keivan Stassun and Leslie Hebb for providing us\nwith their B and V photometry of the LHS 6343 system. We\nthank Jonathan Irwin for his independent analysis of the Kepler light curve and for encouraging us to incorporate the third-light correction into our forward-modeling procedure; Josh Carter for independently confirming our best-fitting light curve parameters; and John Gizis for pointing out an error in our calculation of the brown dwarf mass in an earlier draft of this manuscript. We gratefully acknowledge the tireless dedication and hard work of\nthe Kepler team, without whom this project would not be possible. In particular, we thank Jon Jenkins and Lucianne Walkowicz for confirming the planet-like nature of the transits following the initial identification of transit events by K.A. We gratefully acknowledge the efforts and dedication of the Keck Observatory staff, especially Grant Hill, Scott Dahm, and Hien Tran for their support of HIRES and Greg Wirth for support of remote observing. We made use of the SIMBAD database operated at CDS, Strasbourge, France, and NASA's Astrophysics Data System Bibliographic Services. A.W.H. gratefully acknowledges support from a Townes Post-doctoral Fellowship at the U.C. Berkeley Space Sciences Laboratory. G.W.M. acknowledges NASA grant NNX06AH52G. Finally, we extend special thanks to those of Hawaiian ancestry on whose sacred mountain of Mauna Kea we are privileged to be guests. Without their generous hospitality, the Keck observations presented herein would\nnot have been possible.\n\nPublished - Johnson2011p13389Astrophys_J.pdf
", "abstract": "We report the discovery of a brown dwarf that transits one member of the M+M binary system LHS 6343 AB every 12.71 days. The transits were discovered using photometric data from the Kepler public data release. The LHS 6343 stellar system was previously identified as a single high proper motion M dwarf. We use adaptive optics imaging to resolve the system into two low-mass stars with masses 0.370 \u00b1 0.009 M_\u2299 and 0.30 \u00b1 0.01 M_\u2299, respectively, and a projected separation of 0\".55. High-resolution spectroscopy shows that the more massive component undergoes Doppler variations consistent with Keplerian motion, with a period equal to the transit period and an amplitude consistent with a companion mass of M_C = 62.7 \u00b1 2.4 M_(Jup). Based on our analysis of the transit light curve, we estimate the radius of the companion to be R_C = 0.833 \u00b1 0.021 R_(Jup), which is consistent with theoretical predictions of the radius of a >1 Gyr brown dwarf.", "date": "2011-04-01", "date_type": "published", "publication": "Astrophysical Journal", "volume": "730", "number": "2", "publisher": "American Astronomical Society", "pagerange": "Art. No. 79", "id_number": "CaltechAUTHORS:20110414-085412708", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20110414-085412708", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "University of California, Berkeley" }, { "agency": "NASA", "grant_number": "NNX06AH52G" } ] }, "local_group": { "items": [ { "id": "Infrared-Processing-and-Analysis-Center-(IPAC)" } ] }, "doi": "10.1088/0004-637X/730/2/79", "primary_object": { "basename": "Johnson2011p13389Astrophys_J.pdf", "url": "https://authors.library.caltech.edu/records/3pgdn-gq908/files/Johnson2011p13389Astrophys_J.pdf" }, "resource_type": "article", "pub_year": "2011", "author_list": "Johnson, John Asher; Apps, Kevin; et el." }, { "id": "https://authors.library.caltech.edu/records/t3v9t-fzc16", "eprint_id": 23380, "eprint_status": "archive", "datestamp": "2023-08-19 06:07:45", "lastmod": "2023-10-23 19:03:22", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Wright-J-T", "name": { "family": "Wright", "given": "J. T." }, "orcid": "0000-0001-6160-5888" }, { "id": "Veras-D", "name": { "family": "Veras", "given": "Dimitri" }, "orcid": "0000-0001-8014-6162" }, { "id": "Ford-E-B", "name": { "family": "Ford", "given": "Eric B." }, "orcid": "0000-0001-6545-639X" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "G. W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "A. W." }, "orcid": "0000-0001-8638-0320" }, { "id": "Isaacson-H-T", "name": { "family": "Isaacson", "given": "H." }, "orcid": "0000-0002-0531-1073" }, { "id": "Fischer-D-A", "name": { "family": "Fischer", "given": "D. A." }, "orcid": "0000-0003-2221-0861" }, { "id": "Spronck-J", "name": { "family": "Spronck", "given": "J." } }, { "id": "Anderson-Jay", "name": { "family": "Anderson", "given": "J." } }, { "id": "Valenti-J", "name": { "family": "Valenti", "given": "J." } } ] }, "title": "The California Planet Survey. III. A Possible 2:1 Resonance in the Exoplanetary Triple System HD 37124", "ispublished": "pub", "full_text_status": "public", "keywords": "planetary systems \u2013 stars: individual (HD 37124)", "note": "\u00a9 2011 American Astronomical Society. \n\nReceived 2010 August 22; accepted 2011 January 5; published 2011 March 9. \n\nBased on observations obtained at the W. M. Keck Observatory, which is\noperated jointly by the University of California and the California Institute of\nTechnology. The Keck Observatory was made possible by the generous\nfinancial support of the W. M. Keck Foundation. We thank the referee, Daniel Fabrycky, for his constructive\nand thorough review, which significantly improved this\nmanuscript.\nJ.T.W. received support from NASA Origins of Solar Systems\ngrant NNX10AI52G. D.V. and E.B.F. were partially supported\nby NASA Origins of Solar Systems grant NNX09AB35G.\nA.W.H. gratefully acknowledges support from a Townes Postdoctoral\nFellowship at the UC Berkeley Space Sciences Laboratory.\nThis work was partially supported by funding from the Center\nfor Exoplanets and Habitable Worlds, which is supported by the\nPennsylvania State University, the Eberly College of Science,\nand the Pennsylvania Space Grant Consortium.\nThe work herein is based on observations obtained at the\nW. M. Keck Observatory, which is operated jointly by the University\nof California and the California Institute of Technology.\nThe Keck Observatory was made possible by the generous financial support of the W. M. Keck Foundation. We recognize\nand acknowledge the very significant cultural role and reverence\nthat the summit of Mauna Kea has always had within the\nindigenous Hawaiian community.We are most fortunate to have\nthe opportunity to conduct observations from this mountain.\nThe authors acknowledge the University of Florida High-\nPerformance Computing Center for providing computational\nresources and support that have contributed to the results\nreported within this paper.\nThis research has made use of NASA's Astrophysics Data\nSystem and the Exoplanet Orbit Database at exoplanets.org.\nFacility: Keck: I\n\nPublished - Wright2011p13392Astrophys_J.pdf
", "abstract": "We present new radial velocities from Keck Observatory and both Newtonian and Keplerian solutions for the triple-planet system orbiting HD 37124. The orbital solution for this system has improved dramatically since the third planet was first reported in Vogt et al. with an ambiguous orbital period. The period ambiguity is resolved, and the outer two planets have an apparent period commensurability of 2:1. A dynamical analysis finds both resonant and non-resonant configurations consistent with the radial velocity data and constrains the mutual inclinations of the planets to be <~30\u00b0. We discuss HD 37124 in the context of the other 19 exoplanetary systems with apparent period commensurabilities, which we summarize in a table. We show that roughly one in three well-characterized multiplanet systems has a apparent low-order period commensurability, which is more than would na\u00efvely be expected if the periods of exoplanets in known multiplanet systems were drawn randomly from the observed distribution of planetary orbital periods.", "date": "2011-04-01", "date_type": "published", "publication": "Astrophysical Journal", "volume": "730", "number": "2", "publisher": "American Astronomical Society", "pagerange": "Art. No. 93", "id_number": "CaltechAUTHORS:20110419-111123481", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20110419-111123481", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "W. M. Keck Foundation" }, { "agency": "NASA", "grant_number": "NNX10AI52G" }, { "agency": "NASA", "grant_number": "NNX09AB35G" }, { "agency": "UC Berkeley Space Sciences Laboratory Townes Postdoctoral Fellowship" }, { "agency": "Center for Exoplanets and Habitable Worlds" }, { "agency": "Pennsylvania Space Grant Consortium" }, { "agency": "University of Florida" } ] }, "local_group": { "items": [ { "id": "Infrared-Processing-and-Analysis-Center-(IPAC)" } ] }, "doi": "10.1088/0004-637X/730/2/93", "primary_object": { "basename": "Wright2011p13392Astrophys_J.pdf", "url": "https://authors.library.caltech.edu/records/t3v9t-fzc16/files/Wright2011p13392Astrophys_J.pdf" }, "resource_type": "article", "pub_year": "2011", "author_list": "Wright, J. T.; Veras, Dimitri; et el." }, { "id": "https://authors.library.caltech.edu/records/hs6tc-bft47", "eprint_id": 23848, "eprint_status": "archive", "datestamp": "2023-08-19 06:02:35", "lastmod": "2023-10-23 20:04:27", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Wright-J-T", "name": { "family": "Wright", "given": "J. T." }, "orcid": "0000-0001-6160-5888" }, { "id": "Fakhouri-O", "name": { "family": "Fakhouri", "given": "O." } }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "G. W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Han-Eunkyu", "name": { "family": "Han", "given": "E." }, "orcid": "0000-0001-9797-0019" }, { "id": "Feng-Y", "name": { "family": "Feng", "given": "Y." } }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "A. W." }, "orcid": "0000-0001-8638-0320" }, { "id": "Fischer-D-A", "name": { "family": "Fischer", "given": "D. A." }, "orcid": "0000-0003-2221-0861" }, { "id": "Valenti-J-A", "name": { "family": "Valenti", "given": "J. A." }, "orcid": "0000-0003-3305-6281" }, { "id": "Anderson-Jay", "name": { "family": "Anderson", "given": "J." } }, { "id": "Piskunov-N", "name": { "family": "Piskunov", "given": "N." } } ] }, "title": "The Exoplanet Orbit Database", "ispublished": "pub", "full_text_status": "public", "note": "\u00a9 2011 Astronomical Society of the Pacific. Received 2010 December 20; accepted 2011 February 7; published 2011 April 13. Draft version February 15, 2011. We would like to thank and acknowledge the tireless work of Jean Schneider, whose Extrasolar Planets Encyclopedia is an indispensable reference for all things exoplanetary. While we have complied every datum in the EOD ourselves from original sources, the Extrasolar Planets Encyclopedia has been a useful check on our numbers and an invaluable clearinghouse of every new planet announcement. We thank the anonymous referee for a quick and constructive referee's report that improved this manuscript and the Database. Special thanks go to R. Paul Butler who generated the first peer-reviewed catalog of exoplanets (Butler et al. 2002), from which the EOD is descended. We thank Scott Gaudi for helpful suggestions that improved this manuscript. We also thank the many users of the EOD and Data Explorers who sent in edits and suggestions. We cannot provide a comprehensive list, but such a list would include Michael Perryman, Jean Schneider, Ian Crossfield, Subo Dong, Wes Traub, and Marshall Perrin. We thank Jason Eastman for a particularly thorough cross-checking of our numbers. We have made extensive use of the NASA/IPAC/NExScI Star and Exoplanet Database, which is operated by the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration, and NASA's Astrophysics Data System Bibliographic Services. We thank the NStED administrators, in particular Stephen Kane and David Ciardi, for their as-\nsistance and support with the EOD and exoplanets.org,\nin particular for their help checking database numbers,\nagreeing to cross-link the websites, and especially for\nchecking, archiving, and providing all published radial\nvelocity data for every exoplanet. This research has made use of the SIMBAD database, operated at CDS, Strasbourg, France. This publication makes use of data products from the Two Micron All Sky Survey, which is a joint project of the University of Massachusetts and the Infrared Processing and Analysis Center/California Institute of Technology, funded by the National Aeronautics and Space Administration and the National Science Foundation. This work was partially supported by funding from the Center for Exoplanets and Habitable Worlds. The Center for Exoplanets and Habitable Worlds is supported by the Pennsylvania State University, the Eberly College of Science, and the Pennsylvania Space Grant Consortium.\n\nPublished - 659427_1_.pdf
Submitted - Wright2011p13802Publ_Astron_Soc_Pac.pdf
", "abstract": "We present a database of well-determined orbital parameters of exoplanets, and their host stars' properties. This database comprises spectroscopic orbital elements measured for 427 planets orbiting 363 stars from radial velocity and transit measurements as reported in the literature. We have also compiled fundamental transit parameters, stellar parameters, and the method used for the planets discovery. This Exoplanet Orbit Database includes all planets with robust, well measured orbital parameters reported in peer-reviewed articles. The database is available in a searchable, filterable, and sortable form online through the Exoplanets Data Explorer table, and the data can be plotted and explored through the Exoplanet Data Explorer plotter. We use the Data Explorer to generate publication-ready plots, giving three examples of the signatures of exoplanet migration and dynamical evolution: We illustrate the character of the apparent correlation between mass and period in exoplanet orbits, the different selection biases between radial velocity and transit surveys, and that the multiplanet systems show a distinct semimajor-axis distribution from apparently singleton systems.", "date": "2011-04", "date_type": "published", "publication": "Publications of the Astronomical Society of the Pacific", "volume": "123", "number": "902", "publisher": "Astronomical Society of the Pacific", "pagerange": "412-422", "id_number": "CaltechAUTHORS:20110531-153815548", "issn": "0004-6280", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20110531-153815548", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "Center for Exoplanets and Habitable Worlds" }, { "agency": "Pennsylvania State University" }, { "agency": "Eberly College of Science" }, { "agency": "Pennsylvania Space Grant Consortium" }, { "agency": "NASA/JPL/Caltech" } ] }, "doi": "10.1086/659427", "primary_object": { "basename": "659427_1_.pdf", "url": "https://authors.library.caltech.edu/records/hs6tc-bft47/files/659427_1_.pdf" }, "related_objects": [ { "basename": "Wright2011p13802Publ_Astron_Soc_Pac.pdf", "url": "https://authors.library.caltech.edu/records/hs6tc-bft47/files/Wright2011p13802Publ_Astron_Soc_Pac.pdf" } ], "resource_type": "article", "pub_year": "2011", "author_list": "Wright, J. T.; Fakhouri, O.; et el." }, { "id": "https://authors.library.caltech.edu/records/k96we-n0115", "eprint_id": 23326, "eprint_status": "archive", "datestamp": "2023-08-22 02:16:59", "lastmod": "2023-10-23 19:00:40", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Howard-A-W", "name": { "family": "Howard", "given": "Andrew W." }, "orcid": "0000-0001-8638-0320" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "Geoffrey W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Fischer-D-A", "name": { "family": "Fischer", "given": "Debra A." }, "orcid": "0000-0003-2221-0861" }, { "id": "Wright-J-T", "name": { "family": "Wright", "given": "Jason T." }, "orcid": "0000-0001-6160-5888" }, { "id": "Henry-G-W", "name": { "family": "Henry", "given": "Gregory W." }, "orcid": "0000-0003-4155-8513" }, { "id": "Isaacson-H-T", "name": { "family": "Isaacson", "given": "Howard" }, "orcid": "0000-0002-0531-1073" }, { "id": "Valenti-J-A", "name": { "family": "Valenti", "given": "Jeff A." }, "orcid": "0000-0003-3305-6281" }, { "id": "Anderson-Jay", "name": { "family": "Anderson", "given": "Jay" } }, { "id": "Piskunov-N-E", "name": { "family": "Piskunov", "given": "Nikolai E." } } ] }, "title": "The NASA-UC Eta-Earth Program. III. A Super-Earth Orbiting HD 97658 and a Neptune-mass Planet Orbiting Gl 785", "ispublished": "pub", "full_text_status": "public", "keywords": "planetary systems; stars: individual (HD 97658, G1 785); techniques: radial velocities", "note": "\u00a9 2011 American Astrophysical Society. Received 2010 November 2; accepted 2010 December 30; published 2011 February 24. \nBased on observations obtained at the W. M. Keck Observatory, which is\noperated jointly by the University of California and the California Institute of\nTechnology. Keck time has been granted by both NASA and the University of\nCalifornia.\n\nWe thank the many observers who contributed to the measurements\nreported here. We gratefully acknowledge the efforts and dedication of the Keck Observatory staff, especially Scott\nDahm, Hien Tran, and Grant Hill for support of HIRES and\nGreg Wirth for support of remote observing. We are grateful to the time assignment committees of the University of California, NASA, and NOAO for their generous allocations of observing time. Without their long-term commitment to RV monitoring, these long-period planets would likely remain unknown. We acknowledge R. Paul Butler and S. S. Vogt for many years of contributing to the data presented here. G.W.M. acknowledges NASA grant NNX06AH52G. G.W.H. acknowledges support from NASA, NSF, Tennessee State University, and the State of Tennessee through its Centers of Excellence program. This work made use of the SIMBAD database (operated at CDS, Strasbourg, France), NASA's Astrophysics Data System Bibliographic Services, and the NASA Star and Exoplanet Database (NStED). Finally, the authors wish to extend special thanks to those of Hawai'ian ancestry on whose sacred mountain of Mauna Kea we are privileged to be guests. Without their generous hospitality, the Keck observations presented herein would\nnot have been possible.\n\nPublished - Howard2011p13382Astrophys_J.pdf
", "abstract": "We report the discovery of planets orbiting two bright, nearby early K dwarf stars, HD 97658 and Gl 785. These planets were detected by Keplerian modeling of radial velocities measured with Keck-HIRES for the NASA-UC Eta-Earth Survey. HD 97658 b is a close-in super-Earth with minimum mass M sin i = 8.2 \u00b1 1.2 M_\u2295, orbital period P = 9.494 \u00b1 0.005 days, and an orbit that is consistent with circular. Gl 785 b is a Neptune-mass planet with M sin i = 21.6 \u00b1 2.0 M_\u2295, P = 74.39 \u00b1 0.12 days, and orbital eccentricity e = 0.30 \u00b1 0.09. Photometric observations with the T12 0.8 m automatic photometric telescope at Fairborn Observatory show that HD 97658 is photometrically constant at the radial velocity period to 0.09 mmag, supporting the existence of the planet.", "date": "2011-03-20", "date_type": "published", "publication": "Astrophysical Journal", "volume": "730", "number": "1", "publisher": "American Astronomical Society", "pagerange": "Art. No. 10", "id_number": "CaltechAUTHORS:20110414-085412339", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20110414-085412339", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNX06AH52G" }, { "agency": "NSF" }, { "agency": "Tennessee State University" }, { "agency": "State of Tennessee" } ] }, "doi": "10.1088/0004-637X/730/1/10", "primary_object": { "basename": "Howard2011p13382Astrophys_J.pdf", "url": "https://authors.library.caltech.edu/records/k96we-n0115/files/Howard2011p13382Astrophys_J.pdf" }, "resource_type": "article", "pub_year": "2011", "author_list": "Howard, Andrew W.; Johnson, John Asher; et el." }, { "id": "https://authors.library.caltech.edu/records/faakz-zqk13", "eprint_id": 23339, "eprint_status": "archive", "datestamp": "2023-08-22 02:14:41", "lastmod": "2023-10-23 19:01:16", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Morton-T-D", "name": { "family": "Morton", "given": "Timothy D." }, "orcid": "0000-0002-8537-5711" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" } ] }, "title": "Discerning Exoplanet Migration Models Using Spin\u2013Orbit Measurements", "ispublished": "pub", "full_text_status": "public", "keywords": "planets and satellites: formation; stars: statistics", "note": "\u00a9 2011 American Astronomical Society.\n\nReceived 2010 September 3; accepted 2010 December 6; published 2011 February 22.\n\nWe acknowledge very helpful suggestions on the structure \nand content of this paper from Josh Winn and Dan Fabrycky, and useful comments from an anonymous referee. T.D.M. thanks\nhis office mate Krzysztof Findeisen for helpful suggestions\nand feedback throughout the course of this project, and also\nacknowledges the Penn State Astrostatistics Summer School,\nwhich helped clarify his thinking about model selection. J.A.J. thanks Jon Swift, Michael Cushing, Brendan Bowler, Justin Crepp, and Ed Turner for illuminating discussions over the years on topics related to data analysis and statistical methods.\n\nPublished - Morton2011p13380Astrophys_J.pdf
", "abstract": "We investigate the current sample of exoplanet spin-orbit measurements to determine whether a dominant planet migration channel can be identified, and at what confidence. We use the predictions of Kozai migration plus tidal friction and planet-planet scattering as our misalignment models, and we allow for a fraction of intrinsically aligned systems, explainable by disk migration. Bayesian model comparison demonstrates that the current sample of 32 spin-orbit measurements strongly favors a two-mode migration scenario combining planet-planet scattering and disk migration over a single-mode Kozai migration scenario. Our analysis indicates that between 34% and 76% of close-in planets (95% confidence) migrated via planet-planet scattering. Separately analyzing the subsample of 12 stars with T_(eff)>6250 K\u2014which Winn et al. predict to be the only type of stars to maintain their primordial misalignments\u2014we find that the data favor a single-mode scattering model over Kozai with 85% confidence. We also assess the number of additional hot star spin-orbit measurements that will likely be necessary to provide a more confident model selection, finding that an additional 20-30 measurement has a >50% chance of resulting in a 95% confident model selection, if the current model selection is correct. While we test only the predictions of particular Kozai and scattering migration models in this work, our methods may be used to test the predictions of any other spin-orbit misaligning mechanism.", "date": "2011-03-10", "date_type": "published", "publication": "Astrophysical Journal", "volume": "729", "number": "2", "publisher": "American Astronomical Society", "pagerange": "Art. No. 138", "id_number": "CaltechAUTHORS:20110414-105442000", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20110414-105442000", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "doi": "10.1088/0004-637X/729/2/138", "primary_object": { "basename": "Morton2011p13380Astrophys_J.pdf", "url": "https://authors.library.caltech.edu/records/faakz-zqk13/files/Morton2011p13380Astrophys_J.pdf" }, "resource_type": "article", "pub_year": "2011", "author_list": "Morton, Timothy D. and Johnson, John Asher" }, { "id": "https://authors.library.caltech.edu/records/fct51-se727", "eprint_id": 22854, "eprint_status": "archive", "datestamp": "2023-08-19 05:47:55", "lastmod": "2023-10-23 17:16:06", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Batalha-N-M", "name": { "family": "Batalha", "given": "Natalie M." } }, { "id": "Ciardi-D-R", "name": { "family": "Ciardi", "given": "David" }, "orcid": "0000-0002-5741-3047" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John" }, "orcid": "0000-0001-9808-7172" } ] }, "title": "Kepler's First Rocky Planet: Kepler-10b", "ispublished": "pub", "full_text_status": "public", "keywords": "planetary systems \u2013 stars: individual (Kepler-10, KIC 11904151, 2MASS 19024305+5014286) \u2013 techniques: photometric \u2013 techniques: spectroscopic", "note": "\u00a9 2011 American Astronomical Society. \n\nReceived 2010 November 10; accepted 2010 November 25; published 2011 February 7. \n\nBased in part on observations obtained at the W. M. Keck Observatory,\nwhich is operated by the University of California and the California Institute of\nTechnology. The authors thank Carly Chubak for computing the barycentric\nradial velocity of Kepler-10. J.C.D. acknowledges support\nfrom The National Center for Atmospheric Research which is\nsponsored by the National Science Foundation. Funding for\nthis Discovery mission is provided by NASA's Science Mission\nDirectorate.\n\nPublished - Batalha2011p13016Astrophys_J.pdf
", "abstract": "NASA's Kepler Mission uses transit photometry to determine the frequency of Earth-size planets in or near the habitable zone of Sun-like stars. The mission reached a milestone toward meeting that goal: the discovery of its first rocky planet, Kepler-10b. Two distinct sets of transit events were detected: (1) a 152 \u00b1 4 ppm dimming lasting 1.811 \u00b1 0.024 hr with ephemeris T [BJD] = 2454964.57375^(+0.00060)_(\u20130.00082) + N * 0.837495^(+0.000004)_(\u20130.000005) days and (2) a 376 \u00b1 9 ppm dimming lasting 6.86 \u00b1 0.07 hr with ephemeris T [BJD] = 2454971.6761^(+0.0020)_(\u20130.0023) + N * 45.29485^(+0.00065) _(\u20130.00076) days. Statistical tests on the photometric and pixel flux time series established the viability of the planet candidates triggering ground-based follow-up observations. Forty precision Doppler measurements were used to confirm that the short-period transit event is due to a planetary companion. The parent star is bright enough for asteroseismic analysis. Photometry was collected at 1 minute cadence for >4 months from which we detected 19 distinct pulsation frequencies. Modeling the frequencies resulted in precise knowledge of the fundamental stellar properties. Kepler-10 is a relatively old (11.9 \u00b1 4.5 Gyr) but otherwise Sun-like main-sequence star with T_(eff) = 5627 \u00b1 44 K, M_\u22c6 = 0.895 \u00b1 0.060 M_\u2299 , and R_\u22c6 = 1.056 \u00b1 0.021 R_\u2299. Physical models simultaneously fit to the transit light curves and the precision Doppler measurements yielded tight constraints on the properties of Kepler-10b that speak to its rocky composition: M_P = 4.56^9+1.17)_(\u20131.29) M_\u2295, R_P = 1.416^(+0.033)_(\u20130.036) R_\u2295, and \u03c1_P = 8.8^(+2.1)_(\u20132.9) g cm^(\u20133). Kepler-10b is the smallest transiting exoplanet discovered to date.", "date": "2011-03-01", "date_type": "published", "publication": "Astrophysical Journal", "volume": "729", "number": "1", "publisher": "American Astronomical Society", "pagerange": "Art. No. 27", "id_number": "CaltechAUTHORS:20110314-105719990", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20110314-105719990", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NSF" }, { "agency": "NASA" } ] }, "local_group": { "items": [ { "id": "Infrared-Processing-and-Analysis-Center-(IPAC)" } ] }, "doi": "10.1088/0004-637X/729/1/27", "primary_object": { "basename": "Batalha2011p13016Astrophys_J.pdf", "url": "https://authors.library.caltech.edu/records/fct51-se727/files/Batalha2011p13016Astrophys_J.pdf" }, "resource_type": "article", "pub_year": "2011", "author_list": "Batalha, Natalie M.; Ciardi, David; et el." }, { "id": "https://authors.library.caltech.edu/records/b4q1f-krz79", "eprint_id": 23033, "eprint_status": "archive", "datestamp": "2023-08-22 02:06:25", "lastmod": "2023-10-23 17:50:18", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Hartman-J-D", "name": { "family": "Hartman", "given": "J. D." }, "orcid": "0000-0001-8732-6166" }, { "id": "Bakos-G-\u00c1", "name": { "family": "Bakos", "given": "G. \u00c1." }, "orcid": "0000-0001-7204-6727" }, { "id": "Kipping-D-M", "name": { "family": "Kipping", "given": "D. M." } }, { "id": "Torres-G", "name": { "family": "Torres", "given": "G." }, "orcid": "0000-0002-5286-0251" }, { "id": "Kov\u00e1cs-G", "name": { "family": "Kov\u00e1cs", "given": "G." } }, { "id": "Noyes-R-W", "name": { "family": "Noyes", "given": "R. W." } }, { "id": "Latham-D-W", "name": { "family": "Latham", "given": "D. W." }, "orcid": "0000-0001-9911-7388" }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "A. W." }, "orcid": "0000-0001-8638-0320" }, { "id": "Fischer-D-A", "name": { "family": "Fischer", "given": "D. A." }, "orcid": "0000-0003-2221-0861" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "J. A." }, "orcid": "0000-0001-9808-7172" }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "G. W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Isaacson-H-T", "name": { "family": "Isaacson", "given": "H." }, "orcid": "0000-0002-0531-1073" }, { "id": "Quinn-S-N", "name": { "family": "Quinn", "given": "S. N." }, "orcid": "0000-0002-8964-8377" }, { "id": "Buchhave-L-A", "name": { "family": "Buchhave", "given": "L. A." }, "orcid": "0000-0003-1605-5666" }, { "id": "B\u00e9ky-B", "name": { "family": "B\u00e9ky", "given": "B." } }, { "id": "Sasselov-D-D", "name": { "family": "Sasselov", "given": "D. D." }, "orcid": "0000-0001-7014-1771" }, { "id": "Stefanik-R-P", "name": { "family": "Stefanik", "given": "R. P." } }, { "id": "Esquerdo-G-A", "name": { "family": "Esquerdo", "given": "G. A." }, "orcid": "0000-0002-9789-5474" }, { "id": "Everett-M-E", "name": { "family": "Everett", "given": "M." }, "orcid": "0000-0002-0885-7215" }, { "id": "Perumpilly-G", "name": { "family": "Perumpilly", "given": "G." } }, { "id": "L\u00e1z\u00e1r-J", "name": { "family": "L\u00e1z\u00e1r", "given": "J." } }, { "id": "Papp-I", "name": { "family": "Papp", "given": "I." } }, { "id": "S\u00e1ri-P", "name": { "family": "S\u00e1ri", "given": "P." } } ] }, "title": "HAT-P-26b: A Low-density Neptune-mass Planet Transiting a K Star", "ispublished": "pub", "full_text_status": "public", "keywords": "planetary systems; stars: individual (HAT-P-26, GSC 0320-01027); techniques: photometric; techniques: spectroscopic", "note": "\u00a9 2011 American Astronomical Society. \n\nReceived 2010 October 4; accepted 2010 December 14; published 2011 January 31. \n\nBased in part on observations obtained at the W. M. Keck Observatory,\nwhich is operated by the University of California and the California Institute of\nTechnology. Keck time has been granted by NASA (N018Hr and N167Hr).\n\nHATNet operations have been funded by NASA grants NNG04GN74G, NNX08AF23G, and SAO IR&D. Work of G. \u00c1 .B. and J.A.J. were supported by the Postdoctoral Fellowship\nof the NSF Astronomy and Astrophysics Program (AST-0702843 and AST-0702821, respectively). G.T. acknowledges partial support from NASA grant NNX09AF59G. We acknowledge \npartial support also from the Kepler Mission under NASA\nCooperative Agreement NCC2-1390 (PI: D.W.L.). G.K. thanks\nthe Hungarian Scientific Research Foundation (OTKA) for support through grant K-81373. This research has made use of Keck telescope time granted through NASA (N018Hr and N167Hr).\n\nPublished - Hartman2011p13142Astrophys_J.pdf
", "abstract": "We report the discovery of HAT-P-26b, a transiting extrasolar planet orbiting the moderately bright V = 11.744 K1 dwarf star GSC 0320\u201301027, with a period P = 4.234516 \u00b1 0.000015 days, transit epoch T_c = 2455304.65122 \u00b1 0.00035 (BJD; Barycentric Julian dates throughout the paper are calculated from Coordinated Universal Time (UTC)), and transit duration 0.1023 \u00b1 0.0010 days. The host star has a mass of 0.82 \u00b1 0.03 M_\u2299 , radius of 0.79^(+0.10)_(\u20130.04) R_\u2299 , effective temperature 5079 \u00b1 88 K, and metallicity [Fe/H] = -0.04 \u00b1 0.08. The planetary companion has a mass of 0.059 \u00b1 0.007 M_J, and radius of 0.565^(+0.072)_(\u20130.032) R_J yielding a mean density of 0.40 \u00b1 0.10 g cm^(-3). HAT-P-26b is the fourth Neptune-mass transiting planet discovered to date. It has a mass that is comparable to those of Neptune and Uranus, and slightly smaller than those of the other transiting Super-Neptunes, but a radius that is ~65% larger than those of Neptune and Uranus, and also larger than those of the other transiting Super-Neptunes. HAT-P-26b is consistent with theoretical models of an irradiated Neptune-mass planet with a 10 M_\u2295 heavy element core that comprises \u227350% of its mass with the remainder contained in a significant hydrogen-helium envelope, though the exact composition is uncertain as there are significant differences between various theoretical models at the Neptune-mass regime. The equatorial declination of the star makes it easily accessible to both Northern and Southern ground-based facilities for follow-up observations.", "date": "2011-02-20", "date_type": "published", "publication": "Astrophysical Journal", "volume": "728", "number": "2", "publisher": "American Astronomical Society", "pagerange": "Art. No. 138", "id_number": "CaltechAUTHORS:20110322-091236708", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20110322-091236708", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNG04GN74G" }, { "agency": "NASA", "grant_number": "NNX08AF23G" }, { "agency": "NSF Astronomy and Astrophysics Fellowship", "grant_number": "AST-0702843" }, { "agency": "NSF Astronomy and Astrophysics Fellowship", "grant_number": "AST-0702821" }, { "agency": "NASA", "grant_number": "NNX09AF59G" }, { "agency": "NASA", "grant_number": "NCC2-1390" }, { "agency": "Hungarian Scientific Research Fund (OTKA)", "grant_number": "K-81373" }, { "agency": "NASA", "grant_number": "N018Hr" }, { "agency": "NASA", "grant_number": "N167Hr" } ] }, "doi": "10.1088/0004-637X/728/2/138", "primary_object": { "basename": "Hartman2011p13142Astrophys_J.pdf", "url": "https://authors.library.caltech.edu/records/b4q1f-krz79/files/Hartman2011p13142Astrophys_J.pdf" }, "resource_type": "article", "pub_year": "2011", "author_list": "Hartman, J. D.; Bakos, G. \u00c1.; et el." }, { "id": "https://authors.library.caltech.edu/records/qnytd-34j14", "eprint_id": 22545, "eprint_status": "archive", "datestamp": "2023-08-19 05:21:27", "lastmod": "2023-10-23 16:59:00", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Winn-J-N", "name": { "family": "Winn", "given": "Joshua N." }, "orcid": "0000-0002-4265-047X" }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "Andrew W." }, "orcid": "0000-0001-8638-0320" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "Geoffrey W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Isaacson-H-T", "name": { "family": "Isaacson", "given": "Howard" }, "orcid": "0000-0002-0531-1073" }, { "id": "Shporer-A", "name": { "family": "Shporer", "given": "Avi" }, "orcid": "0000-0002-1836-3120" }, { "id": "Bakos-G-\u00c1", "name": { "family": "Bakos", "given": "G\u00e1sp\u00e1r \u00c1." }, "orcid": "0000-0001-7204-6727" }, { "id": "Hartman-J-D", "name": { "family": "Hartman", "given": "Joel D." }, "orcid": "0000-0001-8732-6166" }, { "id": "Holman-M-J", "name": { "family": "Holman", "given": "Matthew J." }, "orcid": "0000-0002-1139-4880" }, { "id": "Albrecht-S", "name": { "family": "Albrecht", "given": "Simon" } }, { "id": "Crepp-J-R", "name": { "family": "Crepp", "given": "Justin R." }, "orcid": "0000-0003-0800-0593" }, { "id": "Morton-T-D", "name": { "family": "Morton", "given": "Timothy D." }, "orcid": "0000-0002-8537-5711" } ] }, "title": "Orbital Orientations of Exoplanets: HAT-P-4b is Prograde and HAT-14b is Retrograde", "ispublished": "pub", "full_text_status": "public", "keywords": "planetary systems \u2013 planets and satellites: formation \u2013 planet\u2013star interactions \u2013 stars: rotation", "note": "\u00a9 2011 American Astronomical Society. Received 2010 October 6; accepted 2010 December 3; published 2011 January 13. We thank Teruyuki Hirano for interesting discussions related\nto this work, Amaury Triaud and the anonymous referee\nfor insightful comments on the manuscript, and John\nSouthworth for making available his useful code JKTLD for calculating\ntheoretical limb-darkening coefficients. We gratefully\nacknowledge support from the NASA Origins program through\nawards NNX09AD36G and NNX09AB33G, and the MIT Class\nof 1942. S.A. acknowledges support from an NWO Rubicon\nfellowship.\nThis paper uses observations obtained with facilities of\nthe Las Cumbres Observatory Global Telescope. Some data\npresented herein were obtained at the W.M. Keck Observatory,\nwhich is operated as a scientific partnership among the\nCalifornia Institute of Technology, the University of\nCalifornia, and the National Aeronautics and Space Administration,\nand was made possible by the generous financial support of\nthe W.M. Keck Foundation. We extend special thanks to those\nof Hawaiian ancestry on whose sacred mountain of Mauna Kea\nwe are privileged to be guests. Without their generous hospitality,\nthe Keck observations presented herein would not have been\npossible.\nFacilities: Keck:I (HIRES), FLWO:1.2m (KeplerCam), FTN\n(Spectral)\n\nPublished - Winn2011p12766Astron_J.pdf
", "abstract": "We present observations of the Rossiter-McLaughlin effect for two exoplanetary systems, revealing the orientations of their orbits relative to the rotation axes of their parent stars. HAT-P-4b is prograde, with a sky-projected spin-orbit angle of \u03bb = \u20134.9 \u00b1 11.9 deg. In contrast, HAT-P-14b is retrograde, with \u03bb = 189.1 \u00b1 5.1 deg. These results conform with a previously noted pattern among the stellar hosts of close-in giant planets: hotter stars have a wide range of obliquities and cooler stars have low obliquities. This, in turn, suggests that three-body dynamics and tidal dissipation are responsible for the short-period orbits of many exoplanets. In addition, our data revealed a third body in the HAT-P-4 system, which could be a second planet or a companion star.", "date": "2011-02", "date_type": "published", "publication": "Astronomical Journal", "volume": "141", "number": "2", "publisher": "American Astronomical Society", "pagerange": "Art. No. 63", "id_number": "CaltechAUTHORS:20110228-105841915", "issn": "0004-6256", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20110228-105841915", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNX09AD36G" }, { "agency": "NASA", "grant_number": "NNX09AB33G" }, { "agency": "Massachusetts Institute of Technology (MIT)" }, { "agency": "Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO)" } ] }, "local_group": { "items": [ { "id": "Infrared-Processing-and-Analysis-Center-(IPAC)" } ] }, "doi": "10.1088/0004-6256/141/2/63", "primary_object": { "basename": "Winn2011p12766Astron_J.pdf", "url": "https://authors.library.caltech.edu/records/qnytd-34j14/files/Winn2011p12766Astron_J.pdf" }, "resource_type": "article", "pub_year": "2011", "author_list": "Winn, Joshua N.; Howard, Andrew W.; et el." }, { "id": "https://authors.library.caltech.edu/records/76cn1-s8p31", "eprint_id": 23013, "eprint_status": "archive", "datestamp": "2023-08-19 05:19:54", "lastmod": "2023-10-23 17:49:03", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "Jeremiah A." }, "orcid": "0000-0001-9808-7172" }, { "id": "Lu-Ying-Yu", "name": { "family": "Lu", "given": "Ying Y." } }, { "id": "Burts-A-O", "name": { "family": "Burts", "given": "Alan O." } }, { "id": "Lim-Yeon-Hee", "name": { "family": "Lim", "given": "Yeon-Hee" } }, { "id": "Finn-M-G", "name": { "family": "Finn", "given": "M. G." } }, { "id": "Koberstein-J-T", "name": { "family": "Koberstein", "given": "Jeffrey T." } }, { "id": "Turro-N-J", "name": { "family": "Turro", "given": "Nicholas J." } }, { "id": "Tirrell-D-A", "name": { "family": "Tirrell", "given": "David A." }, "orcid": "0000-0003-3175-4596" }, { "id": "Grubbs-R-H", "name": { "family": "Grubbs", "given": "Robert H." }, "orcid": "0000-0002-0057-7817" } ] }, "title": "Core-Clickable PEG-Branch-Azide Bivalent-Bottle-Brush Polymers by ROMP: Grafting-Through and Clicking-To", "ispublished": "pub", "full_text_status": "public", "note": "\u00a9 2010 American Chemical Society. \n\nReceived: September 18, 2010. Article ASAP December 13, 2010. Published In Issue January 26, 2011. \n\nWe thank Dr. S. Virgil and Mr. S. Presolski for helpful advice. This work was supported by the National Institutes of Health (NIH, R01-GM31332), the Beckman Institute at Caltech (postdoctoral fellowship for J.A.J.), and the MRSEC program of the National Science Foundation (NSF) under Award No. DMR-0520565.\n\nAccepted Version - nihms258485.pdf
Supplemental Material - ja108441d_si_001.pdf
", "abstract": "The combination of highly efficient polymerizations with modular \"click\" coupling reactions has enabled the synthesis of a wide variety of novel nanoscopic tructures. Here we demonstrate the facile synthesis of a new class of clickable, branched nanostructures, polyethylene glycol (PEG)-branch-azide bivalent-brush polymers, facilitated by \"graft-through\" ring-opening metathesis polymerization of a branched norbornene-PEG-chloride macromonomer followed by halide-azide exchange. The resulting bivalent-brush polymers possess azide groups at the core near a polynorbornene backbone with PEG chains extended into solution; the structure resembles a unimolecular micelle. We demonstrate copper-catalyzed azide-alkre cycloaddition (CuAAC) \"click-to\" coupling of a photocleavable doxorubicin (DOX)-alkyne derivative to the azide core. The CuAAC coupling was quantitative across a wide range of nanoscopic sizes (similar to 6-similar to 50 nrn); UV photolysis of the resulting DOX-loaded materials yielded free DOX that was therapeutically effective against human cancer cells.", "date": "2011-01-26", "date_type": "published", "publication": "Journal of the American Chemical Society", "volume": "133", "number": "3", "publisher": "American Chemical Society", "pagerange": "559-566", "id_number": "CaltechAUTHORS:20110321-113913494", "issn": "0002-7863", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20110321-113913494", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NIH", "grant_number": "R01-GM31332" }, { "agency": "Caltech Beckman Institute" }, { "agency": "NSF", "grant_number": "DMR-0520565" } ] }, "doi": "10.1021/ja108441d", "pmcid": "PMC3077470", "primary_object": { "basename": "ja108441d_si_001.pdf", "url": "https://authors.library.caltech.edu/records/76cn1-s8p31/files/ja108441d_si_001.pdf" }, "related_objects": [ { "basename": "nihms258485.pdf", "url": "https://authors.library.caltech.edu/records/76cn1-s8p31/files/nihms258485.pdf" } ], "resource_type": "article", "pub_year": "2011", "author_list": "Johnson, Jeremiah A.; Lu, Ying Y.; et el." }, { "id": "https://authors.library.caltech.edu/records/vnzsr-74c37", "eprint_id": 21955, "eprint_status": "archive", "datestamp": "2023-08-19 05:15:02", "lastmod": "2023-10-23 15:32:35", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Howard-A-W", "name": { "family": "Howard", "given": "Andrew W." }, "orcid": "0000-0001-8638-0320" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "Geoffrey W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Fischer-D-A", "name": { "family": "Fischer", "given": "Debra A." }, "orcid": "0000-0003-2221-0861" }, { "id": "Wright-J-T", "name": { "family": "Wright", "given": "Jason T." }, "orcid": "0000-0001-6160-5888" }, { "id": "Henry-G-W", "name": { "family": "Henry", "given": "Gregory W." }, "orcid": "0000-0003-4155-8513" }, { "id": "Isaacson-H-T", "name": { "family": "Isaacson", "given": "Howard" }, "orcid": "0000-0002-0531-1073" }, { "id": "Valenti-J-A", "name": { "family": "Valenti", "given": "Jeff A." }, "orcid": "0000-0003-3305-6281" }, { "id": "Anderson-Jay", "name": { "family": "Anderson", "given": "Jay" } }, { "id": "Piskunov-N-E", "name": { "family": "Piskunov", "given": "Nikolai E." } } ] }, "title": "The NASA-UC Eta-Earth Program. II. A Planet Orbiting HD 156668 with a Minimum Mass of Four Earth Masses", "ispublished": "pub", "full_text_status": "public", "keywords": "planetary systems \u2013 stars: individual (HD 156668) \u2013 techniques: radial velocities", "note": "\u00a9 2011 The American Astronomical Society. \n\nReceived 2010 March 16; accepted 2010 October 29; published 2010 December 16. \n\nBased on observations obtained at the W. M. Keck Observatory, which is\noperated jointly by the University of California and the California Institute of\nTechnology. Keck time has been granted by both NASA and the University of\nCalifornia. We thank the many observers who contributed to the velocities\nreported here. We gratefully acknowledge the efforts\nand dedication of the Keck Observatory staff, especially Scott\nDahm, Hien Tran, and Grant Hill for support of HIRES and\nGreg Wirth for support of remote observing. We thank Heather\nKnutson, Doug Lin, Shigeru Ida, Jeff Scargle, and Ian Howard\nfor helpful discussions. We are grateful to the time assignment\ncommittees of the University of California, NASA, and NOAO\nfor their generous allocations of observing time. Without their\nlong-term commitment to RV monitoring, these long-period\nplanets would likely remain unknown. We acknowledge R. Paul\nButler and S. S. Vogt for many years of contributing to the data\npresented here. A.W.H. gratefully acknowledges support from\na Townes Post-doctoral Fellowship at the U. C. Berkeley Space\nSciences Laboratory. G.W.M. acknowledges the NASA Grant\nNNX06AH52G. G.W.H. acknowledges support from NASA,\nNSF, Tennessee State University, and the State of Tennessee\nthrough its Centers of Excellence program. J.T.W. was partially\nsupported by funding from the Center for Exoplanets and\nHabitable Worlds. The Center for Exoplanets and Habitable\nWorlds is supported by the Pennsylvania State University, the\nEberly College of Science, and the Pennsylvania Space Grant\nConsortium. This work made use of the SIMBAD database (operated\nat CDS, Strasbourg, France), NASA's Astrophysics Data\nSystem Bibliographic Services, and the NASA Star and Exoplanet\nDatabase (NStED). Finally, the authors wish to extend\nspecial thanks to those of Hawai'ian ancestry on whose sacred\nmountain of Mauna Kea we are privileged to be guests. Without\ntheir generous hospitality, the Keck observations presented\nherein would not have been possible.\n\nPublished - Howard2011p12481Astrophys_J.pdf
Submitted - 1003.3444.pdf
", "abstract": "We report the discovery of HD 156668 b, an extrasolar planet with a minimum mass of M_P sin i = 4.15 M_\u2295. This\nplanet was discovered through Keplerian modeling of precise radial velocities from Keck-HIRES and is the second\nsuper-Earth to emerge from the NASA-UC Eta-Earth Survey. The best-fit orbit is consistent with circular and has\na period of P = 4.6455 days. The Doppler semi-amplitude of this planet, K = 1.89 m s^(\u22121), is among the lowest\never detected, on par with the detection of GJ 581 e using HARPS. A longer period (P \u2248 2.3 years), low-amplitude\nsignal of unknown origin was also detected in the radial velocities and was filtered out of the data while fitting\nthe short-period planet. Additional data are required to determine if the long-period signal is due to a second\nplanet, stellar activity, or another source. Photometric observations using the Automated Photometric Telescopes\nat Fairborn Observatory show that HD 156668 (an old, quiet K3 dwarf) is photometrically constant over the radial\nvelocity period to 0.1 mmag, supporting the existence of the planet. No transits were detected down to a photometric\nlimit of ~3 mmag, ruling out transiting planets dominated by extremely bloated atmospheres, but not precluding a\ntransiting solid/liquid planet with a modest atmosphere.", "date": "2011-01-10", "date_type": "published", "publication": "Astrophysical Journal", "volume": "726", "number": "2", "publisher": "American Astronomical Society", "pagerange": "Art. No. 73", "id_number": "CaltechAUTHORS:20110201-145242900", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20110201-145242900", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "UC Berkeley Space Sciences Laboratory" }, { "agency": "NSF" }, { "agency": "Tennessee State University" }, { "agency": "State of Tennessee" }, { "agency": "Center for Exoplanets and Habitable Worlds" }, { "agency": "Pennsylvania State University" }, { "agency": "Eberly College of Science" }, { "agency": "Pennsylvania Space Grant Consortium" }, { "agency": "NASA", "grant_number": "NNX06AH52G" } ] }, "doi": "10.1088/0004-637X/726/2/73", "primary_object": { "basename": "1003.3444.pdf", "url": "https://authors.library.caltech.edu/records/vnzsr-74c37/files/1003.3444.pdf" }, "related_objects": [ { "basename": "Howard2011p12481Astrophys_J.pdf", "url": "https://authors.library.caltech.edu/records/vnzsr-74c37/files/Howard2011p12481Astrophys_J.pdf" } ], "resource_type": "article", "pub_year": "2011", "author_list": "Howard, Andrew W.; Johnson, John Asher; et el." }, { "id": "https://authors.library.caltech.edu/records/2ps7m-3ya59", "eprint_id": 21949, "eprint_status": "archive", "datestamp": "2023-08-19 05:12:24", "lastmod": "2023-10-23 15:32:15", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Hartman-J-D", "name": { "family": "Hartman", "given": "J. D." }, "orcid": "0000-0001-8732-6166" }, { "id": "Bakos-G-\u00c1", "name": { "family": "Bakos", "given": "G. \u00c1." }, "orcid": "0000-0001-7204-6727" }, { "id": "Sato-Bun'ei", "name": { "family": "Sato", "given": "B." } }, { "id": "Torres-G", "name": { "family": "Torres", "given": "G." }, "orcid": "0000-0002-5286-0251" }, { "id": "Noyes-R-W", "name": { "family": "Noyes", "given": "R. W." } }, { "id": "Latham-D-W", "name": { "family": "Latham", "given": "D. W." }, "orcid": "0000-0001-9911-7388" }, { "id": "Kov\u00e1cs-G", "name": { "family": "Kov\u00e1cs", "given": "G." } }, { "id": "Fischer-D-A", "name": { "family": "Fischer", "given": "D. A." }, "orcid": "0000-0003-2221-0861" }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "A. W." }, "orcid": "0000-0001-8638-0320" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "J. A." }, "orcid": "0000-0001-9808-7172" }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "G. W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Buchhave-L-A", "name": { "family": "Buchhave", "given": "L. A." }, "orcid": "0000-0003-1605-5666" }, { "id": "F\u00fcresz-G", "name": { "family": "F\u00fcresz", "given": "G." } }, { "id": "Perumpilly-G", "name": { "family": "Perumpilly", "given": "G." } }, { "id": "B\u00e9ky-B", "name": { "family": "B\u00e9ky", "given": "B." } }, { "id": "Stefanik-R-P", "name": { "family": "Stefanik", "given": "R. P." } }, { "id": "Sasselov-D-D", "name": { "family": "Sasselov", "given": "D. D." }, "orcid": "0000-0001-7014-1771" }, { "id": "Esquerdo-G-A", "name": { "family": "Esquerdo", "given": "G. A." }, "orcid": "0000-0002-9789-5474" }, { "id": "Everett-M-E", "name": { "family": "Everett", "given": "M." }, "orcid": "0000-0002-0885-7215" }, { "id": "Csubry-Z", "name": { "family": "Csubry", "given": "Z." } }, { "id": "L\u00e1z\u00e1r-J", "name": { "family": "L\u00e1z\u00e1r", "given": "J." } }, { "id": "Papp-I", "name": { "family": "Papp", "given": "I." } }, { "id": "S\u00e1ri-P", "name": { "family": "S\u00e1ri", "given": "P." } } ] }, "title": "HAT-P-18b and HAT-P-19b: two low-density saturn-mass planets transiting metal-rich K stars", "ispublished": "pub", "full_text_status": "public", "keywords": "planetary systems \u2013 stars: individual (HAT-P-18, GSC 2594-00646, HAT-P-19, GSC 2283-00589) \u2013\ntechniques: photometric \u2013 techniques: spectroscopic", "note": "\u00a9 2011 The American Astronomical Society. Received 2010 July 27; accepted 2010 November 2; published 2010 December 14. Based in part on observations obtained at the W. M. Keck Observatory,\nwhich is operated by the University of California and the California Institute of\nTechnology. Keck time has been granted by NOAO (A146Hr, A201Hr, and\nA264Hr), NASA (N018Hr, N049Hr, N128Hr, and N167Hr), and by the NOAO\nKeck-Gemini time exchange program (G329Hr). Based in part on data\ncollected at Subaru Telescope, which is operated by the National Astronomical\nObservatory of Japan. Based in part on observations made with the Nordic\nOptical Telescope, operated on the island of La Palma jointly by Denmark,\nFinland, Iceland, Norway, and Sweden, in the Spanish Observatorio del Roque\nde los Muchachos of the Instituto de Astrofisica de Canarias. HATNet operations have been funded by NASA grants\nNNG04GN74G, NNX08AF23G and SAO IR&D grants. Work\nof G.\u00c1.B. and J.A.J. were supported by the Postdoctoral Fellowship\nof the NSF Astronomy and Astrophysics Program (AST-\n0702843 and AST-0702821, respectively). G.T. acknowledges\npartial support from NASA grant NNX09AF59G. We acknowledge\npartial support also from the Kepler Mission under NASA\nCooperative Agreement NCC2-1390 (D.W.L., PI). G.K. thanks\nthe Hungarian Scientific Research Foundation (OTKA) for support\nthrough grant K-81373. This research has made use of\nKeck telescope time granted through NOAO(programsA146Hr,\nA201Hr, and A264Hr), NASA (programs N018Hr, N049Hr,\nN128Hr, and N167Hr), and through the NOAO Keck-Gemini\ntime exchange program (program G329Hr).\n\nPublished - Hartman2011p12483Astrophys_J.pdf
", "abstract": "We report the discovery of two new transiting extrasolar planets. HAT-P-18b orbits the V = 12.759 K2 dwarf star\nGSC 2594\u221200646, with a period P = 5.508023 \u00b1 0.000006 days, transit epoch T_c = 2454715.02174 \u00b1 0.00020\n(BJD), and transit duration 0.1131 \u00b1 0.0009 days. The host star has a mass of 0.77 \u00b1 0.03 M_\u2299, radius of\n0.75\u00b10.04 R_\u2299, effective temperature 4803 \u00b1 80 K, and metallicity [Fe/H] = +0.10 \u00b1 0.08. The planetary companion\nhas a mass of 0.197\u00b10.013 M_J and radius of 0.995 \u00b1 0.052 R_J, yielding a mean density of 0.25 \u00b1 0.04 g cm^(\u22123).\nHAT-P-19b orbits the V = 12.901 K1 dwarf star GSC 2283\u221200589, with a period P = 4.008778 \u00b1 0.000006 days,\ntransit epoch T_c = 2455091.53417 \u00b1 0.00034 (BJD), and transit duration 0.1182 \u00b1 0.0014 days. The host star\nhas a mass of 0.84 \u00b1 0.04 M_\u2299, radius of 0.82 \u00b1 0.05 R_\u2299, effective temperature 4990 \u00b1 130 K, and metallicity\n[Fe/H] = +0.23 \u00b1 0.08. The planetary companion has a mass of 0.292 \u00b1 0.018 M_J and radius of 1.132 \u00b1 0.072 R_J,\nyielding a mean density of 0.25\u00b10.04 g cm^(\u22123). The radial velocity residuals for HAT-P-19 exhibit a linear\ntrend in time, which indicates the presence of a third body in the system. Comparing these observations\nwith theoretical models, we find that HAT-P-18b and HAT-P-19b are each consistent with a hydrogen\u2013heliumdominated\ngas giant planet with negligible core mass. HAT-P-18b and HAT-P-19b join HAT-P-12b\nand WASP-21b in an emerging group of low-density Saturn-mass planets, with negligible inferred core masses.\nHowever, unlike HAT-P-12b and WASP-21b, both HAT-P-18b and HAT-P-19b orbit stars with super-solar metallicity.\nThis calls into question the heretofore suggestive correlation between the inferred core mass and host star\nmetallicity for Saturn-mass planets.", "date": "2011-01-01", "date_type": "published", "publication": "Astrophysical Journal", "volume": "726", "number": "1", "publisher": "American Astronomical Society", "pagerange": "Art. No. 52", "id_number": "CaltechAUTHORS:20110201-101913698", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20110201-101913698", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "National Optical Astronomy Observatory (NOAO)", "grant_number": "A146Hr" }, { "agency": "National Optical Astronomy Observatory (NOAO)", "grant_number": "A201Hr" }, { "agency": "National Optical Astronomy Observatory (NOAO)", "grant_number": "A264Hr" }, { "agency": "National Optical Astronomy Observatory (NOAO)", "grant_number": "G329Hr" }, { "agency": "NASA", "grant_number": "N018Hr" }, { "agency": "NASA", "grant_number": "N049Hr" }, { "agency": "NASA", "grant_number": "N128Hr" }, { "agency": "NASA", "grant_number": "N167Hr" }, { "agency": "NASA", "grant_number": "NNG04GN74G" }, { "agency": "NASA", "grant_number": "NNX08AF23G" }, { "agency": "NASA", "grant_number": "NNX09AF59G" }, { "agency": "NASA", "grant_number": "NCC2-1390" }, { "agency": "Smithsonian Astrophysical Observatory" }, { "agency": "NSF", "grant_number": "AST-0702843" }, { "agency": "NSF", "grant_number": "AST-0702821" }, { "agency": "Hungarian Scientific Research Fund (OTKA)", "grant_number": "K-81373" } ] }, "doi": "10.1088/0004-637X/726/1/52", "primary_object": { "basename": "Hartman2011p12483Astrophys_J.pdf", "url": "https://authors.library.caltech.edu/records/2ps7m-3ya59/files/Hartman2011p12483Astrophys_J.pdf" }, "resource_type": "article", "pub_year": "2011", "author_list": "Hartman, J. D.; Bakos, G. \u00c1.; et el." }, { "id": "https://authors.library.caltech.edu/records/2j9z2-88z97", "eprint_id": 21892, "eprint_status": "archive", "datestamp": "2023-08-19 05:04:50", "lastmod": "2023-10-23 15:28:47", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" }, { "id": "Payne-M-J", "name": { "family": "Payne", "given": "Matthew" }, "orcid": "0000-0001-5133-6303" }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "Andrew W." }, "orcid": "0000-0001-8638-0320" }, { "id": "Clubb-K-I", "name": { "family": "Clubb", "given": "Kelsey I." } }, { "id": "Ford-E-B", "name": { "family": "Ford", "given": "Eric B." }, "orcid": "0000-0001-6545-639X" }, { "id": "Bowler-B-P", "name": { "family": "Bowler", "given": "Brendan P." }, "orcid": "0000-0003-2649-2288" }, { "id": "Henry-G-W", "name": { "family": "Henry", "given": "Gregory W." }, "orcid": "0000-0003-4155-8513" }, { "id": "Fischer-D-A", "name": { "family": "Fischer", "given": "Debra A." }, "orcid": "0000-0003-2221-0861" }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "Geoffrey W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Brewer-J-M-Astro", "name": { "family": "Brewer", "given": "John M." }, "orcid": "0000-0002-9873-1471" }, { "id": "Schwab-C", "name": { "family": "Schwab", "given": "Chirstian" }, "orcid": "0000-0002-4046-987X" }, { "id": "Reffert-S", "name": { "family": "Reffert", "given": "Sabine" } }, { "id": "Lowe-T-B", "name": { "family": "Lowe", "given": "Thomas B." } } ] }, "title": "Retired A stars and their companions. VI. A pair of interacting exoplanet pairs around the subgiants 24 sextanis and HD 200964", "ispublished": "pub", "full_text_status": "public", "keywords": "planets and satellites: detection \u2013 planets and satellites: formation \u2013 planets and satellites: fundamental\nparameters \u2013 planets and satellites: individual (HD200964 b, HD200964 c, 24 Sex b, 24 Sex c) \u2013 stars: individual\n(24 Sex, HD200964) \u2013 techniques: radial velocities", "note": "\u00a9 2011 The American Astronomical Society. Received 2010 June 7; accepted 2010 October 25; published 2010 December 10. Based on observations obtained at the Lick Observatory, which is operated\nby the University of California, and W. M. Keck Observatory, which is\noperated jointly by the University of California and the California Institute of\nTechnology. We thank the many observers who contributed to the observations\nreported here. We gratefully acknowledge the efforts\nand dedication of the Keck Observatory staff, especially Grant\nHill, Scott Dahm, and Hien Tran for their support of HIRES and\nGreg Wirth for support of remote observing. We are also grateful\nto the time assignment committees of NASA, NOAO, Caltech,\nand the University of California for their generous allocations\nof observing time. M.J.P. thanks Stan Peale for his insightful\ncomments regarding the likely libration states of the systems.\nA.W.H. gratefully acknowledges support from a Townes\nPost-doctoral Fellowship at the U. C. Berkeley Space Sciences\nLaboratory. E.B.F. and M.J.P. were supported by NASA Origins\nof Solar Systems grant NNX09AB35G. G.W.M. acknowledges\nNASA grant NNX06AH52G. G.W.H acknowledges support\nfrom NASA, NSF, Tennessee State University, and the State\nof Tennessee through its Centers of Excellence program. Finally,\nthe authors wish to extend special thanks to those of Hawaiian\nancestry on whose sacred mountain of Mauna Kea we are privileged\nto be guests. Without their generous hospitality, the Keck\nobservations presented herein would not have been possible.\n\nPublished - Johnson2011p12445Astron_J.pdf
", "abstract": "We report radial velocity (RV) measurements of the G-type subgiants 24 Sextanis (= HD 90043) and HD 200964.\nBoth are massive, evolved stars that exhibit periodic variations due to the presence of a pair of Jovian planets.\nPhotometric monitoring with the T12 0.80 m APT at Fairborn Observatory demonstrates both stars to be constant\nin brightness to \u2264 0.002 mag, thus strengthening the planetary interpretation of the RV variations. Based on our\ndynamical analysis of the RV time series, 24 Sex b, c have orbital periods of 452.8 days and 883.0 days, corresponding\nto semimajor axes 1.333 AU and 2.08 AU, and minimum masses 1.99 M_(Jup) and 0.86 M_(Jup), assuming a stellar mass\nM_\u22c6 =1.54 M_\u2299. HD 200964 b, c have orbital periods of 613.8 days and 825.0 days, corresponding to semimajor axes\n1.601 AU and 1.95 AU, and minimum masses 1.99 M_(Jup) and 0.90 M_(Jup), assuming M_\u22c6 = 1.44 M_\u2299. We also carry\nout dynamical simulations to properly account for gravitational interactions between the planets. Most, if not all,\nof the dynamically stable solutions include crossing orbits, suggesting that each system is locked in a mean-motion\nresonance that prevents close encounters and provides long-term stability. The planets in the 24 Sex system likely\nhave a period ratio near 2:1, while the HD 200964 system is even more tightly packed with a period ratio close to\n4:3. However, we caution that further RV observations and more detailed dynamical modeling will be required to\nprovide definitive and unique orbital solutions for both cases, and to determine whether the two systems are truly\nresonant.", "date": "2011-01", "date_type": "published", "publication": "Astronomical Journal", "volume": "141", "number": "1", "publisher": "The American Astronomical Society", "pagerange": "Art. No. 16", "id_number": "CaltechAUTHORS:20110125-161142942", "issn": "0004-6256", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20110125-161142942", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "University of California" }, { "agency": "NASA", "grant_number": "NNX09AB35G" }, { "agency": "NASA", "grant_number": "NNX06AH52G" }, { "agency": "NSF" }, { "agency": "Tennessee State University" }, { "agency": "State of Tennessee Centers of Excellence program" } ] }, "doi": "10.1088/0004-6256/141/1/16", "primary_object": { "basename": "Johnson2011p12445Astron_J.pdf", "url": "https://authors.library.caltech.edu/records/2j9z2-88z97/files/Johnson2011p12445Astron_J.pdf" }, "resource_type": "article", "pub_year": "2011", "author_list": "Johnson, John Asher; Payne, Matthew; et el." }, { "id": "https://authors.library.caltech.edu/records/ws34c-5ew07", "eprint_id": 23151, "eprint_status": "archive", "datestamp": "2023-08-19 04:49:09", "lastmod": "2023-10-23 17:59:22", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "Jeremiah A." }, "orcid": "0000-0001-9808-7172" }, { "id": "Lu-Ying-Yu", "name": { "family": "Lu", "given": "Ying Y." } }, { "id": "Burts-A-O", "name": { "family": "Burts", "given": "Alan O." } }, { "id": "Xia-Yan", "name": { "family": "Xia", "given": "Yan" } }, { "id": "Durrell-A-C", "name": { "family": "Durrell", "given": "Alec C." } }, { "id": "Tirrell-D-A", "name": { "family": "Tirrell", "given": "David A." }, "orcid": "0000-0003-3175-4596" }, { "id": "Grubbs-R-H", "name": { "family": "Grubbs", "given": "Robert H." }, "orcid": "0000-0002-0057-7817" } ] }, "title": "Drug-Loaded, Bivalent-Bottle-Brush Polymers by Graft-through ROMP", "ispublished": "pub", "full_text_status": "public", "note": "\u00a9 2010 American Chemical Society. \n\nReceived: September 15, 2010; Revised: November 08, 2010. Article ASAP December 02, 2010. Published In Issue December 28, 2010. \n\nWe thank Dr. S. Virgil for helpful discussion and advice. We also thank the Beckman Institute for a postdoctoral fellowship for JAJ. UV-vis experiments were performed in the Beckman Institute Laser Center. This work was supported by the National Institutes of Health (NIH, R01-GM31332), the MRSEC program of the National Science Foundation (NSF) under award number DMR-0520565, and the NSF Center for Chemical Innovation (Powering the Planet, CHE-0802907 and CHE-0947829).\n\nAccepted Version - nihms255854.pdf
Supplemental Material - ma1021506_si_001.pdf
", "abstract": "Graft through ring-opening metathesis polymerization (ROMP) using ruthenium N heterocyclic carbene catalysts has enabled the synthesis of bottle-brush polymers with unprecedented ease and control Here we report the first bivalent-brush polymers, these materials were prepared by graft through ROMP of drug-loaded poly(ethylene glycol) (PEG) based macromonomers (MMs) Anticancer drugs doxorubicin (DOX) and camptothecin (CT) were attached to a norbornene alkyne-PEG MM via a photocleavable linker ROMP of either or both drug loaded MMs generated brush homo and copolymers with low polydispersities and defined molecular weights. Release of free DOX and CT from these materials was initiated by exposure to 365 nm light All of the CT and DOX polymers were at least 10 fold more toxic to human cancer cells after photoinitiated drug release while a copolymer carrying both CT and DOX displayed 30-fold increased toxicity upon irradiation Graft through ROMP of drug loaded macromonomers provides a general method for the systematic study of structure function relationships for stimuli responsive polymers in biological systems.", "date": "2010-12-28", "date_type": "published", "publication": "Macromolecules", "volume": "43", "number": "24", "publisher": "American Chemical Society", "pagerange": "10326-10335", "id_number": "CaltechAUTHORS:20110329-095607608", "issn": "0024-9297", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20110329-095607608", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "Caltech Beckman Institute" }, { "agency": "NIH", "grant_number": "R01-GM31332" }, { "agency": "NSF", "grant_number": "DMR-0520565" }, { "agency": "NSF", "grant_number": "CHE-0802907" }, { "agency": "NSF", "grant_number": "CHE-0947829" } ] }, "local_group": { "items": [ { "id": "CCI-Solar-Fuels" } ] }, "doi": "10.1021/ma1021506", "pmcid": "PMC3083120", "primary_object": { "basename": "nihms255854.pdf", "url": "https://authors.library.caltech.edu/records/ws34c-5ew07/files/nihms255854.pdf" }, "related_objects": [ { "basename": "ma1021506_si_001.pdf", "url": "https://authors.library.caltech.edu/records/ws34c-5ew07/files/ma1021506_si_001.pdf" } ], "resource_type": "article", "pub_year": "2010", "author_list": "Johnson, Jeremiah A.; Lu, Ying Y.; et el." }, { "id": "https://authors.library.caltech.edu/records/zq7wy-nfx20", "eprint_id": 36224, "eprint_status": "archive", "datestamp": "2023-08-22 01:32:22", "lastmod": "2023-10-20 22:53:49", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Jenkins-J-M", "name": { "family": "Jenkins", "given": "Jon M." }, "orcid": "0000-0002-4715-9460" }, { "id": "Gautier-T-N-III", "name": { "family": "Gautier", "given": "Thomas N., III" } }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "Andrew W." }, "orcid": "0000-0001-8638-0320" } ] }, "title": "Discovery and Rossiter-Mclaughlin Effect of Exoplanet Kepler-8b", "ispublished": "pub", "full_text_status": "public", "keywords": "radio lines: planetary systems; stars: fundamental parameters; stars: individual (Kepler-8, KIC 6822244, 2MASS 18450914+4227038)", "note": "\u00a9 2010 American Astronomical Society. Received 2010 February 14; accepted 2010 September 2; published 2010 November 11. \n\nBased in part on observations obtained at the W. M. Keck Observatory, which is operated as a scientific partnership between the California Institute of Technology, the University of California, and the National Aeronautics and Space Administration. The Observatory was made possible by the generous financial support of the W. M. Keck Foundation.\n\nFunding for this mission is provided by NASA's Science Mission Directorate. Many people have contributed to the success of the Kepler Mission, and it is impossible to acknowledge them all. Valuable advice and assistance were provided by Willie Torres, Riley Duren, M. Crane, D. Ciardi, and Josh Winn. Special technical help was provided by Carly Chubak, G. Mandushev, and Josh Winn. We thank E. Bachtel and his team at Ball Aerospace for their work on the Kepler photometer and R. Thompson for key contributions to engineering, and C. Botosh for able management. G.W.M. thanks and acknowledges support from NASA Cooperative Agreement NNX06AH52G.\nFacility: Kepler.\n\nPublished - 0004-637X_724_2_1108.pdf
", "abstract": "We report on the discovery and the Rossiter-McLaughlin (R-M) effect of Kepler-8b, a transiting planet identified by the NASA Kepler Mission. Kepler photometry and Keck-HIRES radial velocities yield the radius and mass of the planet around this F8IV subgiant host star. The planet has a radius R_P = 1.419 R_J and a mass M_P = 0.60 M_J, yielding a density of 0.26 g cm^(\u20133), one of the lowest planetary densities known. The orbital period is P = 3.523 days and the orbital semimajor axis is 0.0483^(+0.0006) _(\u20130.0012) AU. The star has a large rotational vsin i of 10.5 \u00b1 0.7 km s^(\u20131) and is relatively faint (V \u2248 13.89 mag); both properties are deleterious to precise Doppler measurements. The velocities are indeed noisy, with scatter of 30 m s^(\u20131), but exhibit a period and phase that are consistent with those implied by transit photometry. We securely detect the R-M effect, confirming the planet's existence and establishing its orbit as prograde. We measure an inclination between the projected planetary orbital axis and the projected stellar rotation axis of \u03bb = \u201326\u00ba.4 \u00b1 10\u00ba.1, indicating a significant inclination of the planetary orbit. R-M measurements of a large sample of transiting planets from Kepler will provide a statistically robust measure of the true distribution of spin-orbit orientations for hot Jupiters around F and early G stars.", "date": "2010-12-01", "date_type": "published", "publication": "Astrophysical Journal", "volume": "724", "number": "2", "publisher": "American Astronomical Society", "pagerange": "1108-1119", "id_number": "CaltechAUTHORS:20130108-080503265", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20130108-080503265", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNX06AH52G" } ] }, "doi": "10.1088/0004-637X/724/2/1108", "primary_object": { "basename": "0004-637X_724_2_1108.pdf", "url": "https://authors.library.caltech.edu/records/zq7wy-nfx20/files/0004-637X_724_2_1108.pdf" }, "resource_type": "article", "pub_year": "2010", "author_list": "Jenkins, Jon M.; Gautier, Thomas N., III; et el." }, { "id": "https://authors.library.caltech.edu/records/57aav-c7r63", "eprint_id": 21502, "eprint_status": "archive", "datestamp": "2023-08-22 01:31:59", "lastmod": "2023-10-21 00:05:32", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Kov\u00e1cs-G", "name": { "family": "Kov\u00e1cs", "given": "G." } }, { "id": "Bakos-G-\u00c1", "name": { "family": "Bakos", "given": "G. \u00c1." }, "orcid": "0000-0001-7204-6727" }, { "id": "Hartman-J-D", "name": { "family": "Hartman", "given": "J. D." }, "orcid": "0000-0001-8732-6166" }, { "id": "Torres-G", "name": { "family": "Torres", "given": "G." }, "orcid": "0000-0002-5286-0251" }, { "id": "Noyes-R-W", "name": { "family": "Noyes", "given": "R. W." } }, { "id": "Latham-D-W", "name": { "family": "Latham", "given": "D. W." }, "orcid": "0000-0001-9911-7388" }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "A. W." }, "orcid": "0000-0001-8638-0320" }, { "id": "Fischer-D-A", "name": { "family": "Fischer", "given": "D. A." }, "orcid": "0000-0003-2221-0861" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "J. A." }, "orcid": "0000-0001-9808-7172" }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "G. W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Isaacson-H-T", "name": { "family": "Isaacson", "given": "H." }, "orcid": "0000-0002-0531-1073" }, { "id": "Sasselov-D-D", "name": { "family": "Sasselov", "given": "D. D." }, "orcid": "0000-0001-7014-1771" }, { "id": "Stefanik-R-P", "name": { "family": "Stefanik", "given": "R. P." } }, { "id": "Esquerdo-G-A", "name": { "family": "Esquerdo", "given": "G. A." }, "orcid": "0000-0002-9789-5474" }, { "id": "Fernandez-J-M", "name": { "family": "Fernandez", "given": "J. M." } }, { "id": "B\u00e9ky-B", "name": { "family": "B\u00e9ky", "given": "B." } }, { "id": "L\u00e1z\u00e1r-J", "name": { "family": "L\u00e1z\u00e1r", "given": "J." } }, { "id": "Papp-I", "name": { "family": "Papp", "given": "I." } }, { "id": "S\u00e1ri-P", "name": { "family": "S\u00e1ri", "given": "P." } } ] }, "title": "HAT-P-15b: A 10.9 Day Extrasolar Planet Transiting a Solar-type Star", "ispublished": "pub", "full_text_status": "public", "keywords": "planetary systems; stars:individual (HAT-P-15); techniques: photometric; techniques: spectroscopic", "note": "\u00a9 2010 American Astronomical Society. \n\nReceived 2010 May 24; accepted 2010 August 19; published 2010 November 9. \n\nBased in part on observations obtained at the W. M. Keck Observatory,\nwhich is operated by the University of California and the California Institute of\nTechnology.\n\nHATNet operations have been funded by NASA grants\nNNG04GN74G, NNX08AF23G, and SAO IR&D. Work of\nG.\u00c1.B. and J.A.J. was supported by the Postdoctoral Fellowship of the NSF Astronomy and Astrophysics Program (AST-0702843 and AST-0702821, respectively). G.T. acknowledges partial support from NASA grant NNX09AF59G. We acknowledge partial support also from the Kepler Mission under NASA Cooperative Agreement NCC2-1390 (D.W.L., PI). G.K. thanks the Hungarian Scientific Research Foundation (OTKA) for support through grant K-81373. This research has made use of Keck telescope time granted through NOAO (programs A285Hr and A146Hr) and NASA (programs N128Hr, N145Hr, and N018Hr). We thank the anonymous referee for the helpful comments concerning the radial velocity dispersion.\nNote Added in Proof: Three new long-period TEPs have\nbeen discovered since the acceptance of this paper: the first double transiting system Kepler-9b,c (Holman et al. 2010) and HAT-P-17b,c with planet 'b' transiting and 'c' causing RV variation (Howard et al. 2010).\n\nPublished - Kovacs2010p12131Astrophys_J.pdf
", "abstract": "We report the discovery of HAT-P-15b, a transiting extrasolar planet in the \"period valley,\" a relatively sparsely populated period regime of the known extrasolar planets. The host star, GSC 2883-01687, is a G5 dwarf with V = 12.16. It has a mass of 1.01 \u00b1 0.04 M_\u2609, radius of 1.08 \u00b1 0.04 R_\u2609, effective temperature 5568 \u00b1 90 K, and metallicity [Fe/H] = +0.22 \u00b1 0.08. The planetary companion orbits the star with a period P = 10.863502 \u00b1 0.000027 days, transit epoch T_c = 2454638.56019 \u00b1 0.00048 (BJD), and transit duration 0.2285 \u00b1 0.0015 days. It has a mass of 1.946 \u00b1 0.066 M_J and radius of 1.072 \u00b1 0.043 R_J yielding a mean density of 1.96 \u00b1 0.22 g cm^(-3). At an age of 6.8^(+2.5))(\u20131.6) Gyr, the planet is H/He-dominated and theoretical models require about 2% (10 M_\u2295) worth of heavy elements to reproduce its measured radius. With an estimated equilibrium temperature of ~820 K during transit, and ~1000 K at occultation, HAT-P-15b is a potential candidate to study moderately cool planetary atmospheres by transmission and occultation spectroscopy.", "date": "2010-12-01", "date_type": "published", "publication": "Astrophysical Journal", "volume": "724", "number": "2", "publisher": "American Astronomical Society", "pagerange": "866-877", "id_number": "CaltechAUTHORS:20101222-113109202", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20101222-113109202", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NSF Astronomy and Astrophysics Fellowship", "grant_number": "AST-0702843" }, { "agency": "NSF Astronomy and Astrophysics Fellowship", "grant_number": "AST-0702821" }, { "agency": "NASA", "grant_number": "NNX09AF59G" }, { "agency": "NASA", "grant_number": "NCC2-1390" }, { "agency": "Hungarian Scientific Research Fund (OTKA)", "grant_number": "K-81373" } ] }, "local_group": { "items": [ { "id": "Infrared-Processing-and-Analysis-Center-(IPAC)" } ] }, "doi": "10.1088/0004-637X/724/2/866", "primary_object": { "basename": "Kovacs2010p12131Astrophys_J.pdf", "url": "https://authors.library.caltech.edu/records/57aav-c7r63/files/Kovacs2010p12131Astrophys_J.pdf" }, "resource_type": "article", "pub_year": "2010", "author_list": "Kov\u00e1cs, G.; Bakos, G. \u00c1.; et el." }, { "id": "https://authors.library.caltech.edu/records/3j2xw-b7164", "eprint_id": 22804, "eprint_status": "archive", "datestamp": "2023-08-22 01:30:25", "lastmod": "2023-10-23 17:13:19", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Kipping-D-M", "name": { "family": "Kipping", "given": "D. M." } }, { "id": "Bakos-G-\u00c1", "name": { "family": "Bakos", "given": "G. \u00c1." }, "orcid": "0000-0001-7204-6727" }, { "id": "Hartman-J", "name": { "family": "Hartman", "given": "J." } }, { "id": "Torres-G", "name": { "family": "Torres", "given": "G." }, "orcid": "0000-0002-5286-0251" }, { "id": "Shporer-A", "name": { "family": "Shporer", "given": "A." }, "orcid": "0000-0002-1836-3120" }, { "id": "Latham-D-W", "name": { "family": "Latham", "given": "D. W." }, "orcid": "0000-0001-9911-7388" }, { "id": "Kov\u00e1cs-G", "name": { "family": "Kov\u00e1cs", "given": "G\u00e9za" } }, { "id": "Noyes-R-W", "name": { "family": "Noyes", "given": "R. W." } }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "A. W." }, "orcid": "0000-0001-8638-0320" }, { "id": "Fischer-D-A", "name": { "family": "Fischer", "given": "D. A." }, "orcid": "0000-0003-2221-0861" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "J. A." }, "orcid": "0000-0001-9808-7172" }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "G. W." }, "orcid": "0000-0002-2909-0113" }, { "id": "B\u00e9ky-B", "name": { "family": "B\u00e9ky", "given": "B." } }, { "id": "Perumpilly-G", "name": { "family": "Perumpilly", "given": "G." } }, { "id": "Esquerdo-G-A", "name": { "family": "Esquerdo", "given": "G. A." }, "orcid": "0000-0002-9789-5474" }, { "id": "Sasselov-D-D", "name": { "family": "Sasselov", "given": "D. D." }, "orcid": "0000-0001-7014-1771" }, { "id": "Stefanik-R-P", "name": { "family": "Stefanik", "given": "R. P." } }, { "id": "L\u00e1z\u00e1r-J", "name": { "family": "L\u00e1z\u00e1r", "given": "J." } }, { "id": "Papp-I", "name": { "family": "Papp", "given": "I." } }, { "id": "S\u00e1ri-P", "name": { "family": "S\u00e1ri", "given": "P." } } ] }, "title": "HAT-P-24b: An Inflated Hot Jupiter on a 3.36 Day Period Transiting a Hot, Metal-poor Star", "ispublished": "pub", "full_text_status": "public", "keywords": "planetary systems; stars: individual (HAT-P-24); techniques: photometric; techniques: spectroscopic", "note": "\u00a9 2010 American Astronomical Society. Received 2010 August 1, accepted 2010 October 11. Published 2010 December 3. \n\nBased in part on observations obtained at the W. M. Keck Observatory,\nwhich is operated by the University of California and the California Institute of\nTechnology. Keck time has been granted by NOAO and NASA.\n\nHATNet operations have been funded by NASA grants\nNNG04GN74G, NNX08AF23G and SAO IR&D grants. DK was supported by STFC and as an SAO Predoctoral Fellow.\nWork of G. \u00c1. B. and J. Johnson were supported by the Postdoctoral Fellowship of the NSF Astronomy and Astrophysics Program (AST-0702843 and AST-0702821, respectively). GT acknowledges partial support from NASA grant NNX09AF59G. We acknowledge partial support also from the Kepler Mission under NASA Cooperative Agreement NCC2-1390 (D.W.L., PI). G.K. thanks the Hungarian Scientific Research Foundation (OTKA) for support through grant K-81373. This research has made use of Keck telescope time granted through NOAO and NASA. This paper uses observations obtained with facilities of the Las Cumbres Observatory Global Telescope.\n\nPublished - Kipping2010p12841Astrophys_J.pdf
", "abstract": "We report the discovery of HAT-P-24b, a transiting extrasolar planet orbiting the moderately bright V =\n11.818 F8 dwarf star GSC 0774\u221201441, with a period P = 3.3552464 \u00b1 0.0000071 days, transit epoch T_c = 2455216.97669 \u00b1 0.00024 (BJD)11, and transit duration 3.653 \u00b1 0.025 hr. The host star has a mass of 1.191 \u00b1 0.042M_\u2299, radius of 1.317 \u00b1 0.068R_\u2299, effective temperature 6373 \u00b1 80 K, and a low metallicity of [Fe/H] = \u22120.16 \u00b1 0.08. The planetary companion has a mass of 0.681 \u00b1 0.031 M_J and radius of 1.243 \u00b1 0.072 R_J yielding a mean density of 0.439 \u00b1 0.069 g cm^(\u22123). By repeating our global fits with\ndifferent parameter sets, we have performed a critical investigation of the fitting techniques used for previous\nHungarian-made Automated Telescope planetary discoveries. We find that the system properties are robust against the choice of priors. The effects of fixed versus fitted limb darkening are also examined. HAT-P-24b probably maintains a small eccentricity of e = 0.052^(+0.022)_(\u22120.017), which is accepted over the circular orbit model with false alarm probability 5.8%. In the absence of eccentricity pumping, this result suggests that HAT-P-24b experiences less tidal dissipation than Jupiter. Due to relatively rapid stellar rotation, we estimate that HAT-P-24b should exhibit one of the largest known Rossiter\u2013McLaughlin effect amplitudes for an exoplanet (\u0394V_(RM) \u2243 95 m s^(\u22121)) and thus a precise measurement of the sky-projected spin\u2013orbit alignment should be possible.", "date": "2010-12", "date_type": "published", "publication": "Astrophysical Journal", "volume": "725", "number": "2", "publisher": "American Astronomical Society", "pagerange": "2017-2028", "id_number": "CaltechAUTHORS:20110310-100114723", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20110310-100114723", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNX04GN74G" }, { "agency": "NASA", "grant_number": "NNX08AF23G" }, { "agency": "Smithsonian Astrophysical Observatory" }, { "agency": "NSF Astronomy and Astrophysics Fellowship", "grant_number": "AST-0702843" }, { "agency": "NSF Astronomy and Astrophysics Fellowship", "grant_number": "AST-0702821" }, { "agency": "NASA", "grant_number": "NNX09AF59G" }, { "agency": "NASA", "grant_number": "NCC2-1390" }, { "agency": "Hungarian Scientific Research Fund (OTKA)", "grant_number": "K-81373" }, { "agency": "Science and Technology Facilities Council (STFC)" } ] }, "doi": "10.1088/0004-637X/725/2/2017", "primary_object": { "basename": "Kipping2010p12841Astrophys_J.pdf", "url": "https://authors.library.caltech.edu/records/3j2xw-b7164/files/Kipping2010p12841Astrophys_J.pdf" }, "resource_type": "article", "pub_year": "2010", "author_list": "Kipping, D. M.; Bakos, G. \u00c1.; et el." }, { "id": "https://authors.library.caltech.edu/records/6fzzn-d3574", "eprint_id": 22438, "eprint_status": "archive", "datestamp": "2023-08-19 04:34:05", "lastmod": "2023-10-23 16:01:51", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "Jeremiah A." }, "orcid": "0000-0001-9808-7172" }, { "id": "Lu-Ying-Yu", "name": { "family": "Lu", "given": "Ying Y." } }, { "id": "Van-Deventer-J-A", "name": { "family": "Van Deventer", "given": "James A." } }, { "id": "Tirrell-D-A", "name": { "family": "Tirrell", "given": "David A." }, "orcid": "0000-0003-3175-4596" } ] }, "title": "Residue-specific incorporation of non-canonical amino acids into proteins: recent developments and applications", "ispublished": "pub", "full_text_status": "public", "note": "\u00a9 2010 Elsevier Ltd. \n\nAvailable online 9 November 2010. \n\nWork at Caltech on non-canonical amino acids is supported by NIH grant GM62523 and by the Institute for Collaborative Biotechnologies under contract W911NF-09-D-0001 with the Army Research Office.\n\nAccepted Version - nihms252440.pdf
", "abstract": "Residue-specific incorporation of non-canonical amino acids into proteins allows facile alteration and enhancement of protein properties. In this review, we describe recent technical developments and applications of residue-specific incorporation to problems ranging from elucidation of biochemical mechanisms to engineering of protein-based biomaterials. We hope to inform the reader of the ease and broad utility of residue-specific non-canonical amino acid incorporation with the goal of inspiring investigators outside the field to consider applying this tool to their own research.", "date": "2010-12", "date_type": "published", "publication": "Current Opinion in Chemical Biology", "volume": "14", "number": "6", "publisher": "Elsevier", "pagerange": "774-780", "id_number": "CaltechAUTHORS:20110222-151826904", "issn": "1367-5931", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20110222-151826904", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NIH", "grant_number": "GM62523" }, { "agency": "Army Research Office (ARO)", "grant_number": "W911NF-09-D-0001" } ] }, "doi": "10.1016/j.cbpa.2010.09.013", "pmcid": "PMC3008400", "primary_object": { "basename": "nihms252440.pdf", "url": "https://authors.library.caltech.edu/records/6fzzn-d3574/files/nihms252440.pdf" }, "resource_type": "article", "pub_year": "2010", "author_list": "Johnson, Jeremiah A.; Lu, Ying Y.; et el." }, { "id": "https://authors.library.caltech.edu/records/frrex-0zj40", "eprint_id": 21635, "eprint_status": "archive", "datestamp": "2023-08-19 04:24:20", "lastmod": "2023-10-21 00:12:06", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Winn-J-N", "name": { "family": "Winn", "given": "Joshua N." }, "orcid": "0000-0002-4265-047X" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "Andrew W." }, "orcid": "0000-0001-8638-0320" }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "Geoffrey W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Isaacson-H-T", "name": { "family": "Isaacson", "given": "Howard" }, "orcid": "0000-0002-0531-1073" }, { "id": "Shporer-A", "name": { "family": "Shporer", "given": "Avi" }, "orcid": "0000-0002-1836-3120" }, { "id": "Bakos-G-\u00c1", "name": { "family": "Bakos", "given": "G\u00e1sp\u00e1r \u00c1." }, "orcid": "0000-0001-7204-6727" }, { "id": "Hartman-J-D", "name": { "family": "Hartman", "given": "Joel D." }, "orcid": "0000-0001-8732-6166" }, { "id": "Albrecht-S", "name": { "family": "Albrecht", "given": "Simon" } } ] }, "title": "The Oblique orbit of the Super-Neptune HAT-P-11b", "ispublished": "pub", "full_text_status": "public", "keywords": "planetary systems \u2013 planets and satellites: formation \u2013 planet\u2013star interactions \u2013 stars: rotation", "note": "\u00a9 2010 American Astronomical Society. Received 2010 September 7; accepted 2010 September 27; published 2010 October 20. We thank Norio Narita and Teruyuki Hirano for sharing\ntheir results prior to publication, and Dan Fabrycky and Scott\nGaudi for helpful discussions. We acknowledge the support\nfrom the MIT Class of 1942, NASA grants NNX09AD36G\n(to J.N.W.) and NNX08AF23G (G.B.), and NSF grant AST-\n0702843 (G.B.).\nThe data presented herein were obtained at the W. M.\nKeck Observatory, which is operated as a scientific partnership\namong the California Institute of Technology, the University of\nCalifornia, and NASA, and was made possible by the generous\nfinancial support of the W. M. Keck Foundation. We extend\nspecial thanks to those of Hawaiian ancestry on whose sacred\nmountain of Mauna Kea we are privileged to be guests. Without\ntheir generous hospitality, the Keck observations presented\nherein would not have been possible.\n\nPublished - Winn2010p12077Astrophys_J_Lett.pdf
", "abstract": "We find the orbit of the Neptune-sized exoplanet HAT-P-11b to be highly inclined relative to the equatorial\nplane of its host star. This conclusion is based on spectroscopic observations of two transits, which allowed the\nRossiter\u2013McLaughlin effect to be detected with an amplitude of 1.5m s^(\u22121). The sky-projected obliquity is 103^(+26)\n_(\u221210) deg.\nThis is the smallest exoplanet for which spin\u2013orbit alignment has been measured. The result favors a migration scenario\ninvolving few-body interactions followed by tidal dissipation. This finding also conforms with the pattern that\nthe systems with the weakest tidal interactions have the widest spread in obliquities.We predict that the high obliquity\nof HAT-P-11 will be manifest in transit light curves from the Kepler spacecraft: starspot-crossing anomalies will recur\nat most once per stellar rotation period, rather than once per orbital period as they would for a well-aligned system.", "date": "2010-11-10", "date_type": "published", "publication": "Astrophysical Journal Letters", "volume": "723", "number": "2", "publisher": "American Astronomical Society", "pagerange": "L223-L227", "id_number": "CaltechAUTHORS:20110106-144941893", "issn": "2041-8205", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20110106-144941893", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "MIT Class of 1942" }, { "agency": "NASA", "grant_number": "NNX09AD36G" }, { "agency": "NASA", "grant_number": "NNX08AF23G" }, { "agency": "NSF Astronomy and Astrophysics Fellowship", "grant_number": "AST-0702843" }, { "agency": "W. M. Keck Foundation" } ] }, "local_group": { "items": [ { "id": "Infrared-Processing-and-Analysis-Center-(IPAC)" } ] }, "doi": "10.1088/2041-8205/723/2/L223", "primary_object": { "basename": "Winn2010p12077Astrophys_J_Lett.pdf", "url": "https://authors.library.caltech.edu/records/frrex-0zj40/files/Winn2010p12077Astrophys_J_Lett.pdf" }, "resource_type": "article", "pub_year": "2010", "author_list": "Winn, Joshua N.; Johnson, John Asher; et el." }, { "id": "https://authors.library.caltech.edu/records/vyrbk-t0f69", "eprint_id": 21011, "eprint_status": "archive", "datestamp": "2023-08-19 04:12:06", "lastmod": "2023-10-20 23:40:41", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Howard-A-W", "name": { "family": "Howard", "given": "Andrew W." }, "orcid": "0000-0001-8638-0320" }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "Geoffrey W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" }, { "id": "Fischer-D-A", "name": { "family": "Fischer", "given": "Debra A." }, "orcid": "0000-0003-2221-0861" }, { "id": "Wright-J-T", "name": { "family": "Wright", "given": "Jason T." }, "orcid": "0000-0001-6160-5888" }, { "id": "Isaacson-H-T", "name": { "family": "Isaacson", "given": "Howard" }, "orcid": "0000-0002-0531-1073" }, { "id": "Valenti-J-A", "name": { "family": "Valenti", "given": "Jeff A." }, "orcid": "0000-0003-3305-6281" }, { "id": "Anderson-Jay", "name": { "family": "Anderson", "given": "Jay" } }, { "id": "Lin-Douglas-N-C", "name": { "family": "Lin", "given": "Doug N. C." }, "orcid": "0000-0001-5466-4628" }, { "id": "Ida-Shigeru", "name": { "family": "Ida", "given": "Shigeru" } } ] }, "title": "The Occurrence and Mass Distribution of Close-in Super-Earths, Neptunes, and Jupiters", "ispublished": "pub", "full_text_status": "public", "note": "\u00a9 2010 American Association for the Advancement of Science. \n\nReceived 8 July 2010; accepted 27 September 2010. \n\nThis work was based on observations at the W. M. Keck\nObservatory granted by NASA and the University of California\n(UC). We thank the many observers who contributed to the\nmeasurements reported here and acknowledge the efforts\nand dedication of the Keck Observatory staff, especially\nS. Dahm, H. Tran, and G. Hill for support of HIRES and\nG. Wirth for support of remote observing. We acknowledge\nR. P. Butler and S. Vogt for many years of contributing to the\ndata presented here. A.H. acknowledges support from a\nTownes Postdoctoral Fellowship at the UC Berkeley Space\nSciences Laboratory. G.M. acknowledges NASA grant\nNNX06AH52G. Finally, we extend special thanks to those\nof Hawai`ian ancestry on whose sacred mountain of Mauna\nKea we are privileged to be guests.\n\nSupplemental Material - Howard.SOM.pdf
Updated - 1011.0143.pdf
", "abstract": "The questions of how planets form and how common Earth-like planets are can be addressed by measuring the distribution of exoplanet masses and orbital periods. We report the occurrence rate of close-in planets (with orbital periods less than 50 days), based on precise Doppler measurements of 166 Sun-like stars. We measured increasing planet occurrence with decreasing planet mass (M). Extrapolation of a power-law mass distribution fitted to our measurements, df/dlogM = 0.39 M^(\u22120.48), predicts that 23% of stars harbor a close-in Earth-mass planet (ranging from 0.5 to 2.0 Earth masses). Theoretical models of planet formation predict a deficit of planets in the domain from 5 to 30 Earth masses and with orbital periods less than 50 days. This region of parameter space is in fact well populated, implying that such models need substantial revision.", "date": "2010-10-29", "date_type": "published", "publication": "Science", "volume": "330", "number": "6004", "publisher": "American Association for the Advancement of Science", "pagerange": "653-655", "id_number": "CaltechAUTHORS:20101124-083910202", "issn": "0036-8075", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20101124-083910202", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "UC Berkeley Space Sciences Laboratory" }, { "agency": "NASA", "grant_number": "NNX06AH52G" } ] }, "doi": "10.1126/science.1194854", "primary_object": { "basename": "Howard.SOM.pdf", "url": "https://authors.library.caltech.edu/records/vyrbk-t0f69/files/Howard.SOM.pdf" }, "related_objects": [ { "basename": "1011.0143.pdf", "url": "https://authors.library.caltech.edu/records/vyrbk-t0f69/files/1011.0143.pdf" } ], "resource_type": "article", "pub_year": "2010", "author_list": "Howard, Andrew W.; Marcy, Geoffrey W.; et el." }, { "id": "https://authors.library.caltech.edu/records/nsngp-gfs85", "eprint_id": 20484, "eprint_status": "archive", "datestamp": "2023-08-19 04:01:49", "lastmod": "2023-10-20 23:06:16", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" }, { "id": "Bowler-B-P", "name": { "family": "Bowler", "given": "Brendan P." }, "orcid": "0000-0003-2649-2288" }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "Andrew W." }, "orcid": "0000-0001-8638-0320" }, { "id": "Henry-G-W", "name": { "family": "Henry", "given": "Gregory W." }, "orcid": "0000-0003-4155-8513" }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "Geoffrey W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Isaacson-H-T", "name": { "family": "Isaacson", "given": "Howard" }, "orcid": "0000-0002-0531-1073" }, { "id": "Brewer-J-M-Astro", "name": { "family": "Brewer", "given": "John Michael" }, "orcid": "0000-0002-9873-1471" }, { "id": "Fischer-D-A", "name": { "family": "Fischer", "given": "Debra A." }, "orcid": "0000-0003-2221-0861" }, { "id": "Morton-T-D", "name": { "family": "Morton", "given": "Timothy D." }, "orcid": "0000-0002-8537-5711" }, { "id": "Crepp-J-R", "name": { "family": "Crepp", "given": "Justin R." }, "orcid": "0000-0003-0800-0593" } ] }, "title": "A Hot Jupiter Orbiting the 1.7 M \u2299 Subgiant HD 102956", "ispublished": "pub", "full_text_status": "public", "keywords": "planets and satellites: formation \u2013 stars: individual (HD 102956) \u2013 techniques: radial velocities", "note": "\u00a9 2010 The American Astronomical Society. \n\nReceived 2010 June 21; accepted 2010 August 26; published 2010 September 10. \n\nBased on observations obtained at the W. M. Keck Observatory, which is operated jointly by the University of California and the California Institute of Technology. Keck time has been granted by both NASA and the University of California. \nWe gratefully acknowledge the efforts and dedication of the\nKeck Observatory staff, especially Grant Hill, Scott Dahm,\nand Hien Tran for their support of HIRES, and Greg Wirth\nfor support of remote observing. We are also grateful to\nthe time assignment committees of NASA, NOAO, Caltech,\nand the University of California for their generous allocations\nof observing time. A.W.H. gratefully acknowledges support\nfrom a Townes Post-doctoral Fellowship at the U. C.\nBerkeley Space Sciences Laboratory. G.W.M. acknowledges\nNASA grant NNX06AH52G. G.W.H acknowledges support\nfrom NASA, NSF, Tennessee State University, and the State of Tennessee through its Centers of Excellence program. Finally,\nthe authors wish to extend special thanks to those of\nHawaiian ancestry on whose sacred mountain of Mauna Kea we\nare privileged to be guests. Without their generous hospitality,\nthe Keck observations presented herein would not have been\npossible.\n\nPublished - Johnson2010p11594Astrophys_J_Lett.pdf
", "abstract": "We report the detection of a giant planet in a 6.4950 day orbit around the 1.68 M \u2299 subgiant HD 102956. The planet has a semimajor axis a = 0.081 AU and a minimum mass M_P sin i =0.96 M_(Jup). HD 102956 is the most massive star known to harbor a hot Jupiter, and its planet is only the third known to orbit within 0.6 AU of a star more massive than 1.5 M \u2299. Based on our sample of 137 subgiants with M_* > 1.45 M \u2299, we find that 0.5%-2.3% of A-type stars harbor a close-in planet (a < 0.1 AU) with M_P sin i > 1 M_(Jup), consistent with hot-Jupiter occurrence for Sun-like stars. Thus, the paucity of planets with 0.1 AU < a < 1.0 AU around intermediate-mass stars may be an exaggerated version of the \"period valley\" that is characteristic of planets around Sun-like stars.", "date": "2010-10-01", "date_type": "published", "publication": "Astrophysical Journal Letters", "volume": "721", "number": "2", "publisher": "American Astronomical Society", "pagerange": "L153-L157", "id_number": "CaltechAUTHORS:20101022-111134218", "issn": "2041-8205", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20101022-111134218", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "University of California" }, { "agency": "NASA", "grant_number": "NNX06AH52G" }, { "agency": "NSF" }, { "agency": "Tennessee State University" }, { "agency": "State of Tennessee Centers of Excellence program" } ] }, "doi": "10.1088/2041-8205/721/2/L153", "primary_object": { "basename": "Johnson2010p11594Astrophys_J_Lett.pdf", "url": "https://authors.library.caltech.edu/records/nsngp-gfs85/files/Johnson2010p11594Astrophys_J_Lett.pdf" }, "resource_type": "article", "pub_year": "2010", "author_list": "Johnson, John Asher; Bowler, Brendan P.; et el." }, { "id": "https://authors.library.caltech.edu/records/z35qz-61y83", "eprint_id": 20487, "eprint_status": "archive", "datestamp": "2023-08-19 04:01:58", "lastmod": "2023-10-20 23:06:31", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Holman-M-J", "name": { "family": "Holman", "given": "Matthew J." }, "orcid": "0000-0002-1139-4880" }, { "id": "Ciardi-D-R", "name": { "family": "Ciardi", "given": "David R." }, "orcid": "0000-0002-5741-3047" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John A." }, "orcid": "0000-0001-9808-7172" } ] }, "title": "Kepler-9: A System of Multiple Planets Transiting a Sun-Like Star, Confirmed by Timing Variations", "ispublished": "pub", "full_text_status": "public", "note": "\u00a9 2010 American Association for the Advancement of Science. \n\nReceived 28 July 2010; accepted 19 August 2010. Published online 26 August 2010. \n\nFunding for this Discovery mission is provided by NASA's\nScience Mission Directorate. We acknowledge NASA\nCooperative Agreement NCC2-1390. D.C.F. acknowledges\nsupport from the Michelson Fellowship, supported by NASA\nand administered by the NASA Exoplanet Science Institute.\nThis material is based on work supported by the NSF\nunder grant no. 0707203. This work is based, in part,\non observations obtained at the W. M. Keck Observatory,\nwhich is operated by the Univ. of California and the\nCalifornia Institute of Technology. Some of the observations\nin this paper were obtained at Kitt Peak National Observatory,\nNational Optical Astronomy Observatory, which is operated\nby the Association of Universities for Research in Astronomy\nunder cooperative agreement with the NSF. J.F.R. is a\nNASA postdoctoral program fellow. We are grateful to\nN. Haghighipour for many helpful comments and suggestions.\n\nSupplemental Material - 1.pdf
", "abstract": "The Kepler spacecraft is monitoring more than 150,000 stars for evidence of planets transiting\nthose stars. We report the detection of two Saturn-size planets that transit the same Sun-like star,\nbased on 7 months of Kepler observations. Their 19.2- and 38.9-day periods are presently\nincreasing and decreasing at respective average rates of 4 and 39 minutes per orbit; in addition,\nthe transit times of the inner body display an alternating variation of smaller amplitude. These\nsignatures are characteristic of gravitational interaction of two planets near a 2:1 orbital\nresonance. Six radial-velocity observations show that these two planets are the most massive\nobjects orbiting close to the star and substantially improve the estimates of their masses. After\nremoving the signal of the two confirmed giant planets, we identified an additional transiting\nsuper-Earth\u2013size planet candidate with a period of 1.6 days.", "date": "2010-10-01", "date_type": "published", "publication": "Science", "volume": "330", "number": "6000", "publisher": "American Association for the Advancement of Science", "pagerange": "51-54", "id_number": "CaltechAUTHORS:20101022-141052585", "issn": "0036-8075", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20101022-141052585", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA Michelson Fellowship" }, { "agency": "NASA", "grant_number": "NCC2-1390" }, { "agency": "NSF", "grant_number": "AST-0707203" } ] }, "local_group": { "items": [ { "id": "Infrared-Processing-and-Analysis-Center-(IPAC)" } ] }, "doi": "10.1126/science.1195778", "primary_object": { "basename": "1.pdf", "url": "https://authors.library.caltech.edu/records/z35qz-61y83/files/1.pdf" }, "resource_type": "article", "pub_year": "2010", "author_list": "Holman, Matthew J.; Ciardi, David R.; et el." }, { "id": "https://authors.library.caltech.edu/records/xewwy-6kf52", "eprint_id": 20594, "eprint_status": "archive", "datestamp": "2023-08-23 16:56:53", "lastmod": "2023-10-20 23:14:03", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Howard-A-W", "name": { "family": "Howard", "given": "Andrew W." }, "orcid": "0000-0001-8638-0320" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "Geoffrey W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Fischer-D-A", "name": { "family": "Fischer", "given": "Debra A." }, "orcid": "0000-0003-2221-0861" }, { "id": "Wright-J-T", "name": { "family": "Wright", "given": "Jason T." }, "orcid": "0000-0001-6160-5888" }, { "id": "Bernat-D", "name": { "family": "Bernat", "given": "David" } }, { "id": "Henry-G-W", "name": { "family": "Henry", "given": "Gregory W." }, "orcid": "0000-0003-4155-8513" }, { "id": "Peek-K-M-G", "name": { "family": "Peek", "given": "Kathryn M. G." } }, { "id": "Isaacson-H-T", "name": { "family": "Isaacson", "given": "Howard" }, "orcid": "0000-0002-0531-1073" }, { "id": "Apps-K", "name": { "family": "Apps", "given": "Kevin" } }, { "id": "Endl-M", "name": { "family": "Endl", "given": "Michael" }, "orcid": "0000-0002-7714-6310" }, { "id": "Cochran-W-D", "name": { "family": "Cochran", "given": "William D." }, "orcid": "0000-0001-9662-3496" }, { "id": "Valenti-J-A", "name": { "family": "Valenti", "given": "Jeff A." }, "orcid": "0000-0003-3305-6281" }, { "id": "Anderson-Jay", "name": { "family": "Anderson", "given": "Jay" } }, { "id": "Piskunov-N-E", "name": { "family": "Piskunov", "given": "Nikolai E." } } ] }, "title": "The California Planet Survey. I. Four New Giant Exoplanets", "ispublished": "pub", "full_text_status": "public", "keywords": "binaries: visual; planetary systems; stars: individual (HD 34445, HD 126614, HD 24496, HD 13931, G1 179); techniques: high angular resolution; techniques: photometric; techniques: radial velocities", "note": "\u00a9 2010 The American Astronomical Society. \n\nReceived 2009 May 28; accepted 2010 July 13; published 2010 September 10. \n\nBased on observations obtained at the W. M. Keck Observatory, which is operated jointly by the University of California and the California Institute of Technology. Keck time has been granted by both NASA and the University of\nCalifornia. Two of the planets announced here are also based on observations obtained with the Hobby-Eberly Telescope, which is a joint project of the University of Texas at Austin, the Pennsylvania State University, Stanford\nUniversity, Ludwig-Maximilians-Universit\u00e4t M\u00fcnchen, and\nGeorg-August-Universit\u00e4t G\u00f6ttingen. \n\nWe thank the many observers who contributed to the velocities\nreported here. We gratefully acknowledge the efforts and\ndedication of the Keck Observatory staff, especially Grant Hill and Scott Dahm for support of HIRES and Greg Wirth for support of remote observing. We are grateful to the time assignment committees of the University of California, NASA, and NOAO for their generous allocations of observing time. Without their long-term commitment to radial velocity monitoring, these longperiod planets would likely remain unknown. We acknowledge R. Paul Butler and S. S. Vogt for many years of contributing to the data presented here. A.W.H. gratefully acknowledges support from a Townes Post-doctoral Fellowship at the U. C. Berkeley Space Sciences Laboratory. J.A.J. is an NSF Astronomy and Astrophysics Postdoctoral Fellow and acknowledges support form NSF grant AST-0702821. G.W.M. acknowledges NASA grant NNX06AH52G. J.T.W. received support from NSF grant AST-0504874. M.E. and W.D.C acknowledge support from NASA grants NNX07AL70G and NNX09AB30G issued through the Origins of Solar Systems Program. Automated Astronomy at Tennessee State University has been supported by NASA and NSF as well as Tennessee State University and the State of Tennessee through its Centers of Excellence program. This work made use of the SIMBAD database (operated at CDS, Strasbourg, France), NASA's Astrophysics Data System Bibliographic Services, and the NASA Star and Exoplanet Database (NStED). Finally, the authors wish to extend special thanks to those of Hawai'ian ancestry on whose sacred mountain of Mauna Kea we are privileged to be guests. Without their generous hospitality, the Keck observations presented herein would\nnot have been possible.\n\nPublished - Howard2010p11600Astrophys_J.pdf
", "abstract": "We present precise Doppler measurements of four stars obtained during the past decade at Keck Observatory by the California Planet Survey (CPS). These stars, namely, HD 34445, HD 126614, HD 13931, and Gl 179, all show evidence for a single planet in Keplerian motion. We also present Doppler measurements from the Hobby-Eberly Telescope (HET) for two of the stars, HD 34445 and Gl 179, that confirm the Keck detections and significantly refine the orbital parameters. These planets add to the statistical properties of giant planets orbiting near or beyond the ice line, and merit follow-up by astrometry, imaging, and space-borne spectroscopy. Their orbital parameters span wide ranges of planetary minimum mass (M sin i = 0.38-1.9 M_(Jup)), orbital period (P = 2.87-11.5 yr), semimajor axis (a = 2.1-5.2 AU), and eccentricity (e = 0.02-0.41). HD 34445 b (P = 2.87 yr, M sin i = 0.79 M_(Jup), e = 0.27) is a massive planet orbiting an old, G-type star. We announce a planet, HD 126614 Ab, and an M dwarf, HD 126614 B, orbiting the metal-rich star HD 126614 (which we now refer to as HD 126614 A). The planet, HD 126614 Ab, has minimum mass M sin i = 0.38 M_(Jup) and orbits the stellar primary with period P = 3.41 yr and orbital separation a = 2.3 AU. The faint M dwarf companion, HD 126614 B, is separated from the stellar primary by 489 mas (33 AU) and was discovered with direct observations using adaptive optics and the PHARO camera at Palomar Observatory. The stellar primary in this new system, HD 126614 A, has the highest measured metallicity ([Fe/H] = +0.56) of any known planet-bearing star. HD 13931 b (P = 11.5 yr, M sin i = 1.88 M_(Jup), e = 0.02) is a Jupiter analog orbiting a near solar twin. Gl 179 b (P = 6.3 yr, M sin i = 0.82 M Jup, e = 0.21) is a massive planet orbiting a faint M dwarf. The high metallicity of Gl 179 is consistent with the planet-metallicity correlation among M dwarfs, as documented recently by Johnson & Apps.", "date": "2010-10-01", "date_type": "published", "publication": "Astrophysical Journal", "volume": "721", "number": "2", "publisher": "American Astronomical Society", "pagerange": "1467-1481", "id_number": "CaltechAUTHORS:20101029-093212671", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20101029-093212671", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "UC Berkeley Space Sciences Laboratory Townes Postdoctoral Fellowship" }, { "agency": "NSF", "grant_number": "AST-0702821" }, { "agency": "NASA", "grant_number": "NNX06AH52G" }, { "agency": "NSF", "grant_number": "AST-0504874" }, { "agency": "NASA", "grant_number": "NNX07AL70G" }, { "agency": "NASA", "grant_number": "NNX09AB30G" } ] }, "doi": "10.1088/0004-637X/721/2/1467", "primary_object": { "basename": "Howard2010p11600Astrophys_J.pdf", "url": "https://authors.library.caltech.edu/records/xewwy-6kf52/files/Howard2010p11600Astrophys_J.pdf" }, "resource_type": "article", "pub_year": "2010", "author_list": "Howard, Andrew W.; Johnson, John Asher; et el." }, { "id": "https://authors.library.caltech.edu/records/sy790-6zz97", "eprint_id": 20198, "eprint_status": "archive", "datestamp": "2023-08-22 00:50:18", "lastmod": "2023-10-20 22:19:13", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Buchhave-L-A", "name": { "family": "Buchhave", "given": "L. A." }, "orcid": "0000-0003-1605-5666" }, { "id": "Bakos-G-\u00c1", "name": { "family": "Bakos", "given": "G. \u00c1." }, "orcid": "0000-0001-7204-6727" }, { "id": "Hartman-J-D", "name": { "family": "Hartman", "given": "J. D." }, "orcid": "0000-0001-8732-6166" }, { "id": "Torres-G", "name": { "family": "Torres", "given": "G." }, "orcid": "0000-0002-5286-0251" }, { "id": "Kov\u00e1cs-A", "name": { "family": "Kov\u00e1cs", "given": "A." } }, { "id": "Latham-D-W", "name": { "family": "Latham", "given": "D. W." }, "orcid": "0000-0001-9911-7388" }, { "id": "Noyes-R-W", "name": { "family": "Noyes", "given": "R. W." } }, { "id": "Esquerdo-G-A", "name": { "family": "Esquerdo", "given": "G. A." }, "orcid": "0000-0002-9789-5474" }, { "id": "Everett-M-E", "name": { "family": "Everett", "given": "M." }, "orcid": "0000-0002-0885-7215" }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "A. W." }, "orcid": "0000-0001-8638-0320" }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "G. W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Fischer-D-A", "name": { "family": "Fischer", "given": "D. A." }, "orcid": "0000-0003-2221-0861" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "J. A." }, "orcid": "0000-0001-9808-7172" }, { "id": "Andersen-J", "name": { "family": "Andersen", "given": "J." } }, { "id": "F\u0171r\u00e9sz-G", "name": { "family": "F\u0171r\u00e9sz", "given": "G." } }, { "id": "Perumpilly-G", "name": { "family": "Perumpilly", "given": "G." } }, { "id": "Sasselov-D-D", "name": { "family": "Sasselov", "given": "D. D." }, "orcid": "0000-0001-7014-1771" }, { "id": "Stefanik-R-P", "name": { "family": "Stefanik", "given": "R. P." } }, { "id": "B\u00e9ky-B", "name": { "family": "B\u00e9ky", "given": "B." } }, { "id": "L\u00e1z\u00e1r-J", "name": { "family": "L\u00e1z\u00e1r", "given": "J." } }, { "id": "Papp-I", "name": { "family": "Papp", "given": "I." } }, { "id": "S\u00e1ri-P", "name": { "family": "S\u00e1ri", "given": "P." } } ] }, "title": "HAT-P-16b: A 4 M _J Planet Transiting a Bright Star on an Eccentric Orbit", "ispublished": "pub", "full_text_status": "public", "keywords": "planetary systems; stars: individual (HAT-P-16, GSC 2792-01700); techniques: photometric; techniques: spectroscopic", "note": "\u00a9 2010. The American Astronomical Society. All rights reserved. Received 2010 April 14; accepted 2010 July 5; published 2010 August 17. Based in part on observations made with the Nordic Optical Telescope, operated on the island of La Palma jointly by Denmark, Finland, Iceland, Norway, and Sweden, in the Spanish Observatorio del Roque de los Muchachos of the Instituto de Astrofisica de Canarias. Based in part on observations obtained at the W. M. Keck Observatory, which is operated by the University of California and the California Institute of Technology. Keck time has been granted by NASA (N018Hr). HATNet operations have been funded by NASA grants\nNNG04GN74G, NNX08AF23G, and SAO IR&D grants. The\nwork of G.\u00c1.B. and J.A.J. were supported by the Postdoctoral\nFellowship of the NSF Astronomy and Astrophysics Program\n(AST-0702843 and AST-0702821, respectively). G.T. acknowledges\npartial support from NASA grant NNX09AF59G.We acknowledge\npartial support also from the Kepler Mission under\nNASA Cooperative Agreement NCC2-1390 (D.W.L., PI). G.K.\nthanks the Hungarian Scientific Research Foundation (OTKA)\nfor support through grant K-81373. Based in part on observations\nmade with the Nordic Optical Telescope, operated on the\nisland of La Palma jointly by Denmark, Finland, Iceland, Norway,\nand Sweden, in the Spanish Observatorio del Roque de\nlos Muchachos of the Instituto de Astrofisica de Canarias. This\nresearch has made use of Keck telescope time granted through\nNASA (N018Hr).\n\nPublished - Buchhave2010p11436Astrophys_J.pdf
", "abstract": "We report the discovery of HAT-P-16b, a transiting extrasolar planet orbiting the V = 10.8 mag F8 dwarf GSC 2792-01700, with a period P = 2.775960 \u00b1 0.000003 days, transit epoch T_c = 2455027.59293 \u00b1 0.00031 (BJD^(10)), and transit duration 0.1276 \u00b1 0.0013 days. The host star has a mass of 1.22 \u00b1 0.04 M \u2299, radius of 1.24 \u00b1 0.05 R \u2299 , effective temperature 6158 \u00b1 80 K, and metallicity [Fe/H] = +0.17 \u00b1 0.08. The planetary companion has a mass of 4.193 \u00b1 0.094 M _J and radius of 1.289 \u00b1 0.066 R _J, yielding a mean density of 2.42 \u00b1 0.35 g cm^(\u20133). Comparing these observed characteristics with recent theoretical models, we find that HAT-P-16b is consistent with a 1 Gyr H/He-dominated gas giant planet. HAT-P-16b resides in a sparsely populated region of the mass-radius diagram and has a non-zero eccentricity of e = 0.036 with a significance of 10\u03c3.", "date": "2010-09-10", "date_type": "published", "publication": "Astrophysical Journal", "volume": "720", "number": "2", "publisher": "American Astronomical Society", "pagerange": "1118-1125", "id_number": "CaltechAUTHORS:20100928-125255296", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20100928-125255296", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNG04GN74G" }, { "agency": "NASA", "grant_number": "NNX08AF23G" }, { "agency": "Smithsonian Astrophysical Observatory" }, { "agency": "NSF Astronomy and Astrophysics Fellowship", "grant_number": "AST-0702843" }, { "agency": "NSF Astronomy and Astrophysics Fellowship", "grant_number": "AST-0702821" }, { "agency": "NASA", "grant_number": "NNX09AF59G" }, { "agency": "NASA", "grant_number": "NCC2-1390" }, { "agency": "Hungarian Scientific Research Fund (OTKA)", "grant_number": "K-81373" }, { "agency": "Keck telescope/NASA", "grant_number": "N018Hr" } ] }, "doi": "10.1088/0004-637X/720/2/1118", "primary_object": { "basename": "Buchhave2010p11436Astrophys_J.pdf", "url": "https://authors.library.caltech.edu/records/sy790-6zz97/files/Buchhave2010p11436Astrophys_J.pdf" }, "resource_type": "article", "pub_year": "2010", "author_list": "Buchhave, L. A.; Bakos, G. \u00c1.; et el." }, { "id": "https://authors.library.caltech.edu/records/3zafj-e3184", "eprint_id": 19714, "eprint_status": "archive", "datestamp": "2023-08-22 00:31:02", "lastmod": "2023-10-20 21:17:39", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Winn-J-N", "name": { "family": "Winn", "given": "Joshua N." }, "orcid": "0000-0002-4265-047X" }, { "id": "Fabrycky-D-C", "name": { "family": "Fabrycky", "given": "Daniel" }, "orcid": "0000-0003-3750-0183" }, { "id": "Albrecht-S", "name": { "family": "Albrecht", "given": "Simon" } }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" } ] }, "title": "Hot Stars with Hot Jupiters Have High Obliquities", "ispublished": "pub", "full_text_status": "public", "keywords": "planetary systems; planets and satellites: formation; planet\u2013star interactions; stars: rotation", "note": "\u00a9 2010 American Astronomical Society.\n\nReceived 2010 May 3; accepted 2010 June 29; published 2010 July 12.\n\nWe thank Jeremy Goodman, Matija Cuk, Bill Cochran,\nSally Dodson-Robinson, Andrew Howard, Geoff Marcy, Tim\nMorton, Fred Rasio, Dimitar Sasselov, and Richard Wade for\nhelpful discussions. J.N.W. gratefully acknowledges support\nfrom the NASA Origins program through award NNX09AD36G\nand the MIT Class of 1942, as well as the Tinsley Scholars\nprogram and the hospitality of the Astronomy Department at\nthe University of Texas, Austin. D.F. acknowledges support\nfrom the Michelson Fellowship, supported by the National\nAeronautics and Space Administration and administered by the\nMichelson Science Center. S. Albrecht acknowledges support\nfrom an NWO Rubicon fellowship.\n\nPublished - Winn2010p11220Astrophys_J_Lett.pdf
", "abstract": "We show that stars with transiting planets for which the stellar obliquity is large are preferentially hot (T_(eff) > 6250 K). This could explain why small obliquities were observed in the earliest measurements, which focused on relatively cool stars drawn from Doppler surveys, as opposed to hotter stars that emerged more recently from transit surveys. The observed trend could be due to differences in planet formation and migration around stars of varying mass. Alternatively, we speculate that hot-Jupiter systems begin with a wide range of obliquities, but the photospheres of cool stars realign with the orbits due to tidal dissipation in their convective zones, while hot stars cannot realign because of their thinner convective zones. This in turn would suggest that hot Jupiters originate from few-body gravitational dynamics and that disk migration plays at most a supporting role.", "date": "2010-08-01", "date_type": "published", "publication": "Astrophysical Journal Letters", "volume": "718", "number": "2", "publisher": "American Astronomical Society", "pagerange": "L145-L149", "id_number": "CaltechAUTHORS:20100830-135040266", "issn": "2041-8205", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20100830-135040266", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNX09AD36G" }, { "agency": "MIT Class of 1942" }, { "agency": "Tinsley Scholars Program" }, { "agency": "Michelson Fellowship" }, { "agency": "Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO)" } ] }, "doi": "10.1088/2041-8205/718/2/L145", "primary_object": { "basename": "Winn2010p11220Astrophys_J_Lett.pdf", "url": "https://authors.library.caltech.edu/records/3zafj-e3184/files/Winn2010p11220Astrophys_J_Lett.pdf" }, "resource_type": "article", "pub_year": "2010", "author_list": "Winn, Joshua N.; Fabrycky, Daniel; et el." }, { "id": "https://authors.library.caltech.edu/records/rkzx5-vdb78", "eprint_id": 36222, "eprint_status": "archive", "datestamp": "2023-08-22 00:31:46", "lastmod": "2023-10-20 22:53:43", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Irwin-J", "name": { "family": "Irwin", "given": "Jonathan" } }, { "id": "Buchhave-L-A", "name": { "family": "Buchhave", "given": "Lars" }, "orcid": "0000-0003-1605-5666" }, { "id": "Berta-Z-K", "name": { "family": "Berta", "given": "Zachory K." } }, { "id": "Charbonneau-D", "name": { "family": "Charbonneau", "given": "David" }, "orcid": "0000-0002-9003-484X" }, { "id": "Latham-D-W", "name": { "family": "Latham", "given": "David W." }, "orcid": "0000-0001-9911-7388" }, { "id": "Burke-C-J", "name": { "family": "Burke", "given": "Christopher J." } }, { "id": "Esquerdo-G-A", "name": { "family": "Esquerdo", "given": "Gilbert A." }, "orcid": "0000-0002-9789-5474" }, { "id": "Everett-M-E", "name": { "family": "Everett", "given": "Mark E." }, "orcid": "0000-0002-0885-7215" }, { "id": "Holman-M-J", "name": { "family": "Holman", "given": "Matthew J." }, "orcid": "0000-0002-1139-4880" }, { "id": "Nutzman-P", "name": { "family": "Nutzman", "given": "Philip" } }, { "id": "Berlind-P", "name": { "family": "Berlind", "given": "Perry" } }, { "id": "Calkins-M-L", "name": { "family": "Calkins", "given": "Michael L." }, "orcid": "0000-0002-2830-5661" }, { "id": "Falco-E-E", "name": { "family": "Falco", "given": "Emilio E." } }, { "id": "Winn-J-N", "name": { "family": "Winn", "given": "Joshua N." }, "orcid": "0000-0002-4265-047X" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John A." }, "orcid": "0000-0001-9808-7172" }, { "id": "Gazak-J-Z", "name": { "family": "Gazak", "given": "J. Zachary" } } ] }, "title": "NLTT 41135: A Field M Dwarf + Brown Dwarf Eclipsing Binary in a Triple System, Discovered by the MEarth Observatory", "ispublished": "pub", "full_text_status": "public", "keywords": "binaries: eclipsing; brown dwarfs; stars: individual (NLTT 41135); stars: low-mass", "note": "\u00a9 2010 American Astronomical Society. Received 2010 February 23; accepted 2010 June 8; published 2010 July 14. The MEarth team gratefully acknowledges funding from\nthe David and Lucile Packard Fellowship for Science and\nEngineering (awarded to DC). This material is based upon\nwork supported by the National Science Foundation under grant number AST-0807690. L.B. and D.W.L. acknowledge partial support from the NASA Kepler mission under cooperative agreement NCC2-1390. J.A.J. thanks the NSF Astronomy and Astrophysics Postdoctoral Fellowship program for support in the years leading to the completion of this work, and acknowledges support from NSF grant AST-0702821. We thank Isabelle Baraffe for providing NextGen and cond models in the z band, Daniel Fabrycky for helpful discussions regarding dynamics, and Timothy Brown and the rest of the team at the Las Cumbres Observatory Global Telescope for their efforts in trying to obtain a resolved light curve of the system. The MEarth team is greatly indebted to the staff at the Fred Lawrence Whipple\nObservatory for their efforts in construction and maintenance of the facility, and would like to explicitly thank Wayne Peters, Ted Groner, Karen Erdman-Myres, Grace Alegria, Rodger Harris, Bob Hutchins,Dave Martina, Dennis Jankovsky, and Tom Welsh for their support. Finally, we thank the referee for a thorough and helpful report, which has substantially improved the manuscript. This research is based on observations made with the Nordic Optical Telescope, operated on the island of La Palma jointly by\nDenmark, Finland, Iceland, Norway, and Sweden, in the Spanish Observatorio del Roque de los Muchachos of the Instituto de Astrofisica de Canarias. This research has made extensive use of data products from the Two Micron All Sky Survey, which is a joint project of the University of Massachusetts and the Infrared Processing and Analysis Center/California Institute of Technology, funded by NASA and the NSF, NASA's Astrophysics Data System (ADS), and the SIMBAD database, operated at CDS, Strasbourg, France. The Digitized Sky Surveys were produced at the Space Telescope Science Institute under U.S. Government grant NAG W-2166. The images of these surveys are based on photographic data obtained using the Oschin Schmidt Telescope on Palomar Mountain and the UK Schmidt Telescope. The plates were processed into the present compressed digital form with\nthe permission of these institutions. Funding for the SDSS and SDSS-II has been provided by the Alfred P. Sloan Foundation, the Participating Institutions, the National Science Foundation, the U.S. Department of Energy, the National Aeronautics and Space Administration, the Japanese Monbukagakusho, the Max Planck Society, and the Higher Education Funding Council for England. The SDSS Web Site is http://www.sdss.org/. The SDSS is managed by the Astrophysical Research Consortium for the Participating Institutions. The Participating Institutions are the American Museum of Natural History, Astrophysical Institute Potsdam, University of Basel, University of Cambridge, Case Western Reserve University, University of Chicago, Drexel University, Fermilab, the Institute for Advanced Study, the Japan Participation Group, Johns Hopkins University, the Joint Institute for Nuclear Astrophysics, the Kavli Institute for Particle Astrophysics and Cosmology, the Korean Scientist Group, the Chinese Academy of Sciences (LAMOST), Los Alamos National Laboratory, the Max-Planck-Institute for Astronomy (MPIA), the Max-Planck-Institute for Astrophysics (MPA), New Mexico State University, Ohio State University, University of Pittsburgh, University of Portsmouth, Princeton University, the United States Naval\nObservatory, and the University of Washington. The authors wish to recognize and acknowledge the very significant cultural role and reverence that the summit of Mauna\nKea has always had within the indigenous Hawaiian community.\nWe are most fortunate to have the opportunity to conduct\nobservations from this mountain. \nFacilities: UH:2.2m (OPTIC), FLWO:1.2m (KeplerCam),\nFLWO:1.5m (TRES), NOT (FIES)\n\nPublished - 0004-637X_718_2_1353.pdf
", "abstract": "We report the discovery of an eclipsing companion to NLTT 41135, a nearby M5 dwarf that was already known to have a wider, slightly more massive common proper motion companion, NLTT 41136, at 2\".4 separation. Analysis of combined-light and RV curves of the system indicates that NLTT 41135B is a (31-34) \u00b1 3M_(Jup) brown dwarf (where the range depends on the unknown metallicity of the host star) on a circular orbit. The visual M dwarf pair appears to be physically bound, so the system forms a hierarchical triple, with masses approximately in the ratio 8:6:1. The eclipses are grazing, preventing an unambiguous measurement of the secondary radius, but follow-up observations of the secondary eclipse (e.g., with the James Webb Space Telescope) could permit measurements of the surface brightness ratio between the two objects, and thus place constraints on models of brown dwarfs.", "date": "2010-08-01", "date_type": "published", "publication": "Astrophysical Journal", "volume": "718", "number": "2", "publisher": "American Astronomical Society", "pagerange": "1353-1366", "id_number": "CaltechAUTHORS:20130108-072919967", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20130108-072919967", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "David and Lucile Packard Foundation" }, { "agency": "NSF", "grant_number": "AST-0807690" }, { "agency": "NASA", "grant_number": "NCC2-1390" }, { "agency": "NSF Astronomy and Astrophysics Fellowship", "grant_number": "AST-0702821" }, { "agency": "NASA" }, { "agency": "NSF" }, { "agency": "NASA's Astrophysics Data System (ADS)" }, { "agency": "SIMBAD database" }, { "agency": "NASA", "grant_number": "NAG W-2166" }, { "agency": "Alfred P. Sloan Foundation" }, { "agency": "Department of Energy (DOE)" }, { "agency": "Japanese Monbukagakusho" }, { "agency": "Max Planck Society" }, { "agency": "Higher Education Funding Council for England" }, { "agency": "Space Telescope Science Institute" } ] }, "doi": "10.1088/0004-637X/718/2/1353", "primary_object": { "basename": "0004-637X_718_2_1353.pdf", "url": "https://authors.library.caltech.edu/records/rkzx5-vdb78/files/0004-637X_718_2_1353.pdf" }, "resource_type": "article", "pub_year": "2010", "author_list": "Irwin, Jonathan; Buchhave, Lars; et el." }, { "id": "https://authors.library.caltech.edu/records/esc0v-47t60", "eprint_id": 19653, "eprint_status": "archive", "datestamp": "2023-08-19 03:22:09", "lastmod": "2023-10-20 21:13:59", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" }, { "id": "Aller-K-M", "name": { "family": "Aller", "given": "Kimberly M." }, "orcid": "0000-0003-0208-6146" }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "Andrew W." }, "orcid": "0000-0001-8638-0320" }, { "id": "Crepp-J-R", "name": { "family": "Crepp", "given": "Justin R." }, "orcid": "0000-0003-0800-0593" } ] }, "title": "Giant Planet Occurrence in the Stellar Mass-Metallicity Plane", "ispublished": "pub", "full_text_status": "public", "note": "\u00a9 2010 The Astronomical Society of the Pacific.\n\nReceived 2010 April 15; accepted 2010 June 11; published 2010 July 22.\nWe gratefully acknowledge Debra Fischer, Geoff Marcy, and\nBrendan Bowler for their helpful suggestions, edits, and comments.\nWe thank Michael Fitzgerald, Jon Swift, Michael Cushing,\nJason Wright, and Brendan Bowler for their illuminating\ndiscussions about Bayesian inference and other statistical\nmethods. Thanks to Scott Kenyon, Sally Dodson-Robinson,\nand Christoph Mordasini for their comments on earlier drafts\nof this article, and we acknowledge the careful edits and\nthoughtful suggestions of the anonymous referee. J. A. J. acknowledges\nthe NSF Astronomy and Astrophysics Postdoctoral\nFellow with support from NSF grant AST-0702821 for supporting\nthe research leading up to this work. K. M. A.'s research was\nsupported by the University of Hawaii Institute for Astronomy\nResearch Experiences for Undergraduates (REU) Program,\nwhich is funded by the National Science Foundation through\ngrant AST-0757887. A.W.H. gratefully acknowledges support\nfrom a Townes Postdoctoral Fellowship at the University of\nCalifornia, Berkeley Space Sciences Laboratory. This publication\nmakes use of the SIMBAD database operated at CDS,\nStrasbourg, France; NASA's Astrophysics Data System Bibliographic\nServices; and the Exoplanet Data Explorer at http://exoplanets.org/.\n\nPublished - Johnson2010p11109Publ_Astron_Soc_Pac.pdf
", "abstract": "Correlations between stellar properties and the occurrence rate of exoplanets can be used to inform the target selection of future planet-search efforts and provide valuable clues about the planet-formation process. We analyze a sample of 1266 stars drawn from the California Planet Survey targets to determine the empirical functional form describing the likelihood of a star harboring a giant planet as a function of its mass and metallicity. Our stellar sample ranges from M dwarfs with masses as low as 0.2 M_\u2299 to intermediate-mass subgiants with masses as high as 1.9 M_\u2299. In agreement with previous studies, our sample exhibits a planet-metallicity correlation at all stellar masses; the fraction of stars that harbor giant planets scales as f \u221d 10^(1.2[Fe/H]). We can rule out a flat metallicity relationship among our evolved stars (at 98% confidence), which argues that the high metallicities of stars with planets is not likely due to convective envelope \"pollution.\" Our data also rule out a constant planet occurrence rate for [Fe/H] < 0, indicating that giant planets continue to become rarer at sub-Solar metallicities. We also find that planet occurrence increases with stellar mass (f \u221d M_*), characterized by a rise from 3% around M dwarfs (0.5 M_\u2299) to 14% around A stars (2 M_\u2299), at Solar metallicity. We argue that the correlation between stellar properties and giant planet occurrence is strong supporting evidence of the core-accretion model of planet formation.", "date": "2010-08", "date_type": "published", "publication": "Publications of the Astronomical Society of the Pacific", "volume": "122", "number": "894", "publisher": "Astronomical Society of the Pacific", "pagerange": "905-915", "id_number": "CaltechAUTHORS:20100825-084335137", "issn": "0004-6280", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20100825-084335137", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NSF", "grant_number": "AST-0702821" }, { "agency": "NSF", "grant_number": "AST-0757887" }, { "agency": "University of Hawaii" } ] }, "doi": "10.1086/655775", "primary_object": { "basename": "Johnson2010p11109Publ_Astron_Soc_Pac.pdf", "url": "https://authors.library.caltech.edu/records/esc0v-47t60/files/Johnson2010p11109Publ_Astron_Soc_Pac.pdf" }, "resource_type": "article", "pub_year": "2010", "author_list": "Johnson, John Asher; Aller, Kimberly M.; et el." }, { "id": "https://authors.library.caltech.edu/records/njcsj-99482", "eprint_id": 19486, "eprint_status": "archive", "datestamp": "2023-08-22 00:24:03", "lastmod": "2023-10-20 20:45:06", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Winn-J-N", "name": { "family": "Winn", "given": "Joshua N." }, "orcid": "0000-0002-4265-047X" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "Andrew W." }, "orcid": "0000-0001-8638-0320" }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "Geoffrey W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Bakos-G-\u00c1", "name": { "family": "Bakos", "given": "G\u00e1sp\u00e1r \u00c1." }, "orcid": "0000-0001-7204-6727" }, { "id": "Hartman-J-D", "name": { "family": "Hartman", "given": "Joel" }, "orcid": "0000-0001-8732-6166" }, { "id": "Torres-G", "name": { "family": "Torres", "given": "Guillermo" }, "orcid": "0000-0002-5286-0251" }, { "id": "Albrecht-S", "name": { "family": "Albrecht", "given": "Simon" } }, { "id": "Narita-Norio", "name": { "family": "Narita", "given": "Norio" } } ] }, "title": "The HAT-P-13 Exoplanetary System: Evidence for Spin-Orbit Alignment and a Third Companion", "ispublished": "pub", "full_text_status": "public", "keywords": "planets and satellites: dynamical evolution and stability; planets and satellites: formation; planets and satellites: individual (HAT-P-13b, c, d); planets and satellites: interiors; stars: rotation", "note": "\u00a9 2010 The American Astronomical Society.\n\nReceived 2010 March 23; accepted 2010 May 28; published 2010 July 1.\nWe thank Dan Fabrycky for helpful conversations, especially\nabout the dynamical implications of our results. We also thank Debra Fischer and John Brewer for investigating the\nspectroscopic determination of the stellar rotation rate. We are\ngrateful to Scott Gaudi and Greg Laughlin for comments on the\nmanuscript.\nJ.N.W. gratefully acknowledges support from the NASA\nOrigins program through award NNX09AD36G and the MIT\nClass of 1942. A.W.H. acknowledges a Townes Postdoctoral\nFellowship from the Space Sciences Laboratory at UC Berkeley.\nG.A.B. was supported by NASA grant NNX08AF23G and\nan NSF Astronomy & Astrophysics Postdoctoral Fellowship\n(AST-0702843). G.T. acknowledges partial support from NASA\ngrant NNX09AF59G. S.A. acknowledges the support of the\nNetherlands Organisation for Scientific Research (NWO). N.N.\nwas supported by a Japan Society for Promotion of Science\n(JSPS) Fellowship for Research (PD: 20-8141). J.N.W. and N.N.\nwere also supported in part by the National Science Foundation\nunder Grant No. NSF PHY05-51164 (KITP program \"The\nTheory and Observation of Exoplanets\" at UCSB).\nThe data presented herein were obtained at the W. M. Keck\nObservatory, which is operated as a scientific partnership among\nthe California Institute of Technology, the University of California,\nand the National Aeronautics and Space Administration,\nand was made possible by the generous financial support of the\nW. M. Keck Foundation. We extend special thanks to those of\nHawaiian ancestry on whose sacred mountain of Mauna Kea we\nare privileged to be guests. Without their generous hospitality,\nthe Keck observations presented herein would not have been\npossible.\nFacilities: Keck:I (HIRES)\n\nPublished - Winn2010p11066Astrophys_J.pdf
", "abstract": "We present new radial velocity (RV) measurements of HAT-P-13, a star with two previously known companions: a transiting giant planet \"b\" with an orbital period of 3 days and a more massive object \"c\" on a 1.2 yr, highly eccentric orbit. For this system, dynamical considerations would lead to constraints on planet b's interior structure, if it could be shown that the orbits are coplanar and apsidally locked. By modeling the Rossiter-McLaughlin effect, we show that planet b's orbital angular momentum vector and the stellar spin vector are well aligned on the sky (\u03bb = 1.9 \u00b1 8.6 deg). The refined orbital solution favors a slightly eccentric orbit for planet b (e = 0.0133 \u00b1 0.0041), although it is not clear whether it is apsidally locked with c's orbit (\u0394\u03c9 = 36^(+27)_( \u201336) deg). We find a long-term trend in the star's RV and interpret it as evidence for an additional body \"d,\" which may be another planet or a low-mass star. Predictions are given for the next few inferior conjunctions of c, when transits may happen.", "date": "2010-07-20", "date_type": "published", "publication": "Astrophysical Journal", "volume": "718", "number": "1", "publisher": "American Astronomical Society", "pagerange": "575-582", "id_number": "CaltechAUTHORS:20100818-082810517", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20100818-082810517", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNX09AD36G" }, { "agency": "NASA", "grant_number": "NNX08AF23G" }, { "agency": "NASA", "grant_number": "NNX09AF59G" }, { "agency": "MIT Class of 1942" }, { "agency": "Space Sciences Laboratory at UC Berkeley" }, { "agency": "NSF", "grant_number": "AST-0702843" }, { "agency": "NSF", "grant_number": "PHY05-51164" }, { "agency": "Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO)" }, { "agency": "Japan Society for Promotion of Science (JSPS)", "grant_number": "PD: 20-8141" }, { "agency": "W. M. Keck Foundation" } ] }, "doi": "10.1088/0004-637X/718/1/575", "primary_object": { "basename": "Winn2010p11066Astrophys_J.pdf", "url": "https://authors.library.caltech.edu/records/njcsj-99482/files/Winn2010p11066Astrophys_J.pdf" }, "resource_type": "article", "pub_year": "2010", "author_list": "Winn, Joshua N.; Johnson, John Asher; et el." }, { "id": "https://authors.library.caltech.edu/records/c39a5-7rn41", "eprint_id": 18698, "eprint_status": "archive", "datestamp": "2023-08-19 02:39:19", "lastmod": "2023-10-20 16:40:58", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "Andrew W." }, "orcid": "0000-0001-8638-0320" }, { "id": "Bowler-B-P", "name": { "family": "Bowler", "given": "Brendan P." }, "orcid": "0000-0003-2649-2288" }, { "id": "Henry-G-W", "name": { "family": "Henry", "given": "Gregory W." }, "orcid": "0000-0003-4155-8513" }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "Geoffrey W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Wright-J-T", "name": { "family": "Wright", "given": "Jason T." }, "orcid": "0000-0001-6160-5888" }, { "id": "Fischer-D-A", "name": { "family": "Fischer", "given": "Debra A." }, "orcid": "0000-0003-2221-0861" }, { "id": "Isaacson-H-T", "name": { "family": "Isaacson", "given": "Howard" }, "orcid": "0000-0002-0531-1073" } ] }, "title": "Retired A Stars and Their Companions. IV. Seven Jovian Exoplanets from Keck Observatory", "ispublished": "pub", "full_text_status": "public", "note": "\u00a9 2010 The Astronomical Society of the Pacific. \n\nReceived 2009 December 28; accepted 2010 April 29; published 2010 May 19. \n\nBased on observations obtained at the W. M. Keck Observatory, which is\noperated jointly by the University of California and the California Institute\nof Technology. Keck time has been granted by both NASA and the University\nof California. \n\nWe thank the many observers who contributed to the observations\nreported here. We gratefully acknowledge the efforts\nand dedication of the Keck Observatory staff, especially Grant\nHill, Scott Dahm, and Hien Tran for their support of HIRES and\nGreg Wirth for support of remote observing. We are also grateful\nto the time assignment committees of NASA, NOAO,\nCaltech, and the University of California for their generous allocations\nof observing time. A. W. H. gratefully acknowledges\nsupport from a Townes Postdoctoral Fellowship at the U.C. Berkeley\nSpace Sciences Laboratory. J. A. J. thanks the NSF Astronomy\nand Astrophysics Postdoctoral Fellowship program for\nsupport in the years leading to the completion of this work, and\nacknowledges support from NSF grant AST-0702821 and the\nNASA Exoplanets Science Institute (NExScI). G. W. M. acknowledges\nNASA grant NNX06AH52G. J. T.W. received support\nfrom NSF grant AST-0504874. G. W. H acknowledges\nsupport from NASA, NSF, Tennessee State University, and\nthe State of Tennessee through its Centers of Excellence program.\nFinally, we wish to extend special thanks to those of Hawaiian\nancestry on whose sacred mountain of Mauna Kea we\nare privileged to be guests. Without their generous hospitality,\nthe Keck observations presented herein would not have been\npossible.\n\nPublished - Johnson2010p10321Publ_Astron_Soc_Pac.pdf
", "abstract": "We report precise Doppler measurements of seven subgiants from Keck Observatory. All seven stars show variability in their radial velocities consistent with planet-mass companions in Keplerian orbits. The host stars have masses ranging from 1.1 \u2264 M_*/M_\u2299 \u2264 1.9, radii 3.4 \u2264 R_*/R_\u2299 \u2264 6.1, and metallicities -0.21 \u2264 [Fe/H] \u2264 +0.26. The planets are all more massive than Jupiter (MP sin i > 1 M_(Jup)) and have semimajor axes a > 1 AU. We present millimagnitude photometry from the T3 0.4 m APT at Fairborn Observatory for five of the targets. Our monitoring shows these stars to be photometrically stable, further strengthening the interpretation of the observed radial velocity variability. The orbital characteristics of the planets thus far discovered around former A-type stars are very different from the properties of planets around dwarf stars of spectral type F, G, and K, and suggests that the formation and migration of planets is a sensitive function of stellar mass. Three of the planetary systems show evidence of long-term, linear trends indicative of additional distant companions. These trends, together with the high planet masses and increased occurrence rate, indicate that A-type stars are very promising targets for direct-imaging surveys.", "date": "2010-06", "date_type": "published", "publication": "Publications of the Astronomical Society of the Pacific", "volume": "122", "number": "892", "publisher": "Astronomical Society of the Pacific", "pagerange": "701-711", "id_number": "CaltechAUTHORS:20100616-084435213", "issn": "0004-6280", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20100616-084435213", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "University of California" }, { "agency": "NSF", "grant_number": "AST-0702821" }, { "agency": "NSF", "grant_number": "AST-0504874" }, { "agency": "NASA", "grant_number": "NNX06AH52G" }, { "agency": "Tennessee State University" }, { "agency": "State of Tennessee Centers of Excellence program" } ] }, "doi": "10.1086/653809", "primary_object": { "basename": "Johnson2010p10321Publ_Astron_Soc_Pac.pdf", "url": "https://authors.library.caltech.edu/records/c39a5-7rn41/files/Johnson2010p10321Publ_Astron_Soc_Pac.pdf" }, "resource_type": "article", "pub_year": "2010", "author_list": "Johnson, John Asher; Howard, Andrew W.; et el." }, { "id": "https://authors.library.caltech.edu/records/b3zma-rfm89", "eprint_id": 36197, "eprint_status": "archive", "datestamp": "2023-08-21 23:57:38", "lastmod": "2023-10-20 22:21:50", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Tripathi-A", "name": { "family": "Tripathi", "given": "Anjali" }, "orcid": "0000-0002-3960-5870" }, { "id": "Winn-J-N", "name": { "family": "Winn", "given": "Joshua N." }, "orcid": "0000-0002-4265-047X" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "Andrew W." }, "orcid": "0000-0001-8638-0320" }, { "id": "Halverson-S", "name": { "family": "Halverson", "given": "Sam" }, "orcid": "0000-0003-1312-9391" }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "Geoffrey W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Holman-M-J", "name": { "family": "Holman", "given": "Matthew J." }, "orcid": "0000-0002-1139-4880" }, { "id": "de-Kleer-K-R", "name": { "family": "de Kleer", "given": "Katherine R." }, "orcid": "0000-0002-9068-3428" }, { "id": "Carter-J-A", "name": { "family": "Carter", "given": "Joshua A." } }, { "id": "Esquerdo-G-A", "name": { "family": "Esquerdo", "given": "Gilbert A." }, "orcid": "0000-0002-9789-5474" }, { "id": "Everett-M-E", "name": { "family": "Everett", "given": "Mark E." }, "orcid": "0000-0002-0885-7215" }, { "id": "Cabrera-N-E", "name": { "family": "Cabrera", "given": "Nicole E." } } ] }, "title": "A Prograde, Low-inclination Orbit for the Very Hot Jupiter WASP-3b", "ispublished": "pub", "full_text_status": "public", "keywords": "planetary systems; stars: activity; stars: individual (WASP-3); techniques: radial velocities", "note": "\u00a9 2010 American Astronomical Society. \n\nReceived 2009 November 20; accepted 2010 April 3; published 2010 April 28. \n\nSome of the data presented herein were obtained at the W. M. Keck Observatory, which is operated as a scientific partnership among the California Institute of Technology, the University of California, and the National Aeronautics and Space Administration. The Observatory was made possible by the generous financial support of the W. M. Keck Foundation. We thank N. Madhusudhan, Michael L. Stevens, and Robert Noyes for helpful discussions. We are grateful to the anonymous referee for helping to clarify the interpretation of the RV spike. The authors wish to recognize and acknowledge the very significant cultural role and reverence that the summit of Mauna Kea has always had within the indigenous Hawaiian community. We are most fortunate to have the opportunity to conduct observations from this mountain. A.T. and K.dK. thank the MIT UROP Endowment Fund and Office for financial support. J.N.W. is grateful to the NASA Origins program for support through\ngrants NNX09AD36G and NNX09AB33G, and to the MIT Class of 1942 for a Career Development Professorship. J.A.J. is an NSF Astronomy and Astrophysics Postdoctoral Fellow with support from the NSF grant AST-0702821. \n\nFacilities: FLWO:1.2m, UH:2.2m, Keck:I\n\nPublished - 0004-637X_715_1_421.pdf
Accepted Version - 1004.0692.pdf
", "abstract": "We present new spectroscopic and photometric observations of the transiting exoplanetary system WASP-3. Spectra obtained during two separate transits exhibit the Rossiter-McLaughlin (RM) effect and allow us to estimate the sky-projected angle between the planetary orbital axis and the stellar rotation axis, \u03bb = 3.3^(+2.5)_(\u20134.4) deg. This alignment between the axes suggests that WASP-3b has a low orbital inclination relative to the equatorial plane of its parent star. During our first night of spectroscopic measurements, we observed an unexpected redshift briefly exceeding the expected sum of the orbital and RM velocities by 140 m s^(\u20131). This anomaly could represent the occultation of material erupting from the stellar photosphere, although it is more likely to be an artifact caused by moonlight scattered into the spectrograph.", "date": "2010-05-20", "date_type": "published", "publication": "Astrophysical Journal", "volume": "715", "number": "1", "publisher": "American Astronomical Society", "pagerange": "421-428", "id_number": "CaltechAUTHORS:20130107-103218073", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20130107-103218073", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "Massachusetts Institute of Technology (MIT)" }, { "agency": "NASA", "grant_number": "NNX09AD36G" }, { "agency": "NASA", "grant_number": "NNX09AB33G" }, { "agency": "MIT Class of 1942 Career Development Professorship" }, { "agency": "NSF", "grant_number": "AST-0702821" } ] }, "doi": "10.1088/0004-637X/715/1/421", "primary_object": { "basename": "0004-637X_715_1_421.pdf", "url": "https://authors.library.caltech.edu/records/b3zma-rfm89/files/0004-637X_715_1_421.pdf" }, "related_objects": [ { "basename": "1004.0692.pdf", "url": "https://authors.library.caltech.edu/records/b3zma-rfm89/files/1004.0692.pdf" } ], "resource_type": "article", "pub_year": "2010", "author_list": "Tripathi, Anjali; Winn, Joshua N.; et el." }, { "id": "https://authors.library.caltech.edu/records/mn3d5-qtr05", "eprint_id": 36064, "eprint_status": "archive", "datestamp": "2023-08-21 23:57:32", "lastmod": "2023-10-20 22:11:57", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Harakawa-Hiroki", "name": { "family": "Harakawa", "given": "Hiroki" }, "orcid": "0000-0002-6197-5544" }, { "id": "Sato-Bun'ei", "name": { "family": "Sato", "given": "Bun'ei" } }, { "id": "Fischer-D-A", "name": { "family": "Fischer", "given": "Debra A." }, "orcid": "0000-0003-2221-0861" }, { "id": "Ida-Shigeru", "name": { "family": "Ida", "given": "Shigeru" } }, { "id": "Omiya-Masashi", "name": { "family": "Omiya", "given": "Masashi" } }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John A." }, "orcid": "0000-0001-9808-7172" }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "Geoffrey W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Toyota-Eri", "name": { "family": "Toyota", "given": "Eri" } }, { "id": "Hori-Yasunori", "name": { "family": "Hori", "given": "Yasunori" }, "orcid": "0000-0003-4676-0251" }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "Andrew W." }, "orcid": "0000-0001-8638-0320" } ] }, "title": "Detection of a Low-eccentricity and Super-massive Planet to the Subgiant HD 38801", "ispublished": "pub", "full_text_status": "public", "keywords": "planetary systems; stars: individual (HD 38801); techniques: radial velocities; techniques: spectroscopic", "note": "\u00a9 2010 American Astronomical Society.\n\nReceived 2009 September 12; accepted 2010 April 10; published 2010 April 29.\n\nWe extend our gratitude to Akito Tajitsu and Tae-Soo Pyo for\ntheir great expertise and support of HDS observations from the Subaru Telescope. We also gratefully acknowledge the efforts and dedication of all Keck Observatory staff. This research has made use of the Simbad database, operated at CDS, Strasbourg, France. We thank all Hawaiian people for their hospitality and native Hawaiian ancestry on whose sacred mountain of Mauna Kea we are privileged to be guests. Without their generous supports, we would not be able to publish our new planet.\n\nBased on data collected at the Subaru Telescope, which is operated by the National Astronomical Observatory of Japan.\n \nBased on observations obtained at the W. M. Keck Observatory, which is operated by the University of California and the California Institute of Technology. Keck time has been granted by NOAO and NASA.\n\nPublished - 0004-637X_715_1_550.pdf
", "abstract": "We report the detection of a large mass planet orbiting around the K0 metal-rich subgiant HD38801 (V = 8.26) by precise radial velocity (RV) measurements from the Subaru Telescope and the Keck Telescope. The star has a mass of 1.36 M_\u2609 and a metallicity of [Fe/H] = +0.26. The RV variations are consistent with a circular orbit with a period of 696.0 days and a velocity semiamplitude of 200.0 m s^(\u20131), which yield a minimum mass for the companion of 10.7 M JUP and a semimajor axis of 1.71 AU. Such super-massive objects with very low eccentricities and periods of hundreds of days are uncommon among the ensemble of known exoplanets.", "date": "2010-05-20", "date_type": "published", "publication": "Astrophysical Journal", "volume": "715", "number": "1", "publisher": "American Astronomical Society", "pagerange": "550-553", "id_number": "CaltechAUTHORS:20121219-161500621", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20121219-161500621", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "doi": "10.1088/0004-637X/715/1/550", "primary_object": { "basename": "0004-637X_715_1_550.pdf", "url": "https://authors.library.caltech.edu/records/mn3d5-qtr05/files/0004-637X_715_1_550.pdf" }, "resource_type": "article", "pub_year": "2010", "author_list": "Harakawa, Hiroki; Sato, Bun'ei; et el." }, { "id": "https://authors.library.caltech.edu/records/rvkes-spn91", "eprint_id": 36204, "eprint_status": "archive", "datestamp": "2023-08-21 23:57:44", "lastmod": "2023-10-20 22:22:21", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Torres-G", "name": { "family": "Torres", "given": "G." }, "orcid": "0000-0002-5286-0251" }, { "id": "Bakos-G-\u00c1", "name": { "family": "Bakos", "given": "G. \u00c1." }, "orcid": "0000-0001-7204-6727" }, { "id": "Hartman-J", "name": { "family": "Hartman", "given": "J." } }, { "id": "Kov\u00e1cs-G", "name": { "family": "Kov\u00e1cs", "given": "G\u00e9za" } }, { "id": "Noyes-R-W", "name": { "family": "Noyes", "given": "R. W." } }, { "id": "Latham-D-W", "name": { "family": "Latham", "given": "D. W." }, "orcid": "0000-0001-9911-7388" }, { "id": "Fischer-D-A", "name": { "family": "Fischer", "given": "D. A." }, "orcid": "0000-0003-2221-0861" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "J. A." }, "orcid": "0000-0001-9808-7172" }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "G. W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "A. W." }, "orcid": "0000-0001-8638-0320" }, { "id": "Sasselov-D-D", "name": { "family": "Sasselov", "given": "D. D." }, "orcid": "0000-0001-7014-1771" }, { "id": "Kipping-D", "name": { "family": "Kipping", "given": "D." } }, { "id": "Sip\u0151cz-B", "name": { "family": "Sip\u0151cz", "given": "B." } }, { "id": "Stefanik-R-P", "name": { "family": "Stefanik", "given": "R. P." } }, { "id": "Esquerdo-G-A", "name": { "family": "Esquerdo", "given": "G. A." }, "orcid": "0000-0002-9789-5474" }, { "id": "Everett-M-E", "name": { "family": "Everett", "given": "M. E." }, "orcid": "0000-0002-0885-7215" }, { "id": "L\u00e1z\u00e1r-J", "name": { "family": "L\u00e1z\u00e1r", "given": "J." } }, { "id": "Papp-I", "name": { "family": "Papp", "given": "I." } }, { "id": "S\u00e1ri-P", "name": { "family": "S\u00e1ri", "given": "P." } } ] }, "title": "HAT-P-14b: A 2.2 M_J Exoplanet Transiting a Bright F Star", "ispublished": "pub", "full_text_status": "public", "keywords": "planetary systems; stars: individual (HAT-P-14, GSC 3086-00152); techniques: photometric; techniques: spectroscopic", "note": "\u00a9 2010 American Astronomical Society. Received 2010 February 11; accepted 2010 March 30; published 2010 April 29. \nBased in part on observations obtained at the W. M. Keck Observatory,\nwhich is operated by the University of California and the California Institute of\nTechnology.\nHATNet operations have been funded by NASA grants\nNNG04GN74G and NNX08AF23G, and SAO IR&D grants. G.T. acknowledges partial support from NASA grant NNX09AF59G. G.\u00c1.B. and J.A.J. were supported by Postdoctoral\nFellowships of the NSF Astronomy and Astrophysics\nProgram (AST-0702843 and AST-0702821, respectively). We\nacknowledge partial support also from the Kepler Mission under NASA Cooperative Agreement NCC2-1390 (D.W.L., PI).\nG.K. thanks the Hungarian Scientific Research Foundation\n(OTKA) for support through grant K-81373. G.\u00c1.B. thanks\nG\u00e1bor Kov\u00e1cs for his help in system management of the\nHATNet computers while the data analysis was carried out.\nWe are grateful to the anonymous referee for helpful suggestions. This research has benefited from Keck telescope time allocations granted through NOAO (programs A264Hr, A146Hr) and NASA (N049Hr, N018Hr). This research has also made use of the SIMBAD database and the VizieR catalogue access tool, both operated at CDS, Strasbourg, France, of NASA's Astrophysics Data System Abstract Service, and of data products from the Two Micron All Sky Survey (2MASS), which is a joint project of the University of Massachusetts and the Infrared Processing and Analysis Center/California Institute of Technology, funded by NASA and the NSF.\n\nPublished - 0004-637X_715_1_458.pdf
", "abstract": "We report the discovery of HAT-P-14b, a fairly massive transiting extrasolar planet orbiting the moderately bright star GSC 3086-00152 (V = 9.98), with a period of P = 4.627669 \u00b1 0.000005 days. The transit is close to grazing (impact parameter 0.891^(+0.007)_(\u20130.008)) and has a duration of 0.0912 \u00b1 0.0017 days, with a reference epoch of mid-transit of T_c = 2,454, 875.28938 \u00b1 0.00047 (BJD). The orbit is slightly eccentric (e = 0.107 \u00b1 0.013), and the orientation is such that occultations are unlikely to occur. The host star is a slightly evolved mid-F dwarf with a mass of 1.386 \u00b1 0.045 M_\u2609, a radius of 1.468 \u00b1 0.054 R_\u2609, effective temperature 6600 \u00b1 90 K, and a slightly metal-rich composition corresponding to [Fe/H] = +0.11 \u00b1 0.08. The planet has a mass of 2.232 \u00b1 0.059 M_J and a radius of 1.150 \u00b1 0.052 R_J, implying a mean density of 1.82 \u00b1 0.24 g cm^(\u20133). Its radius is well reproduced by theoretical models for the 1.3 Gyr age of the system if the planet has a heavy-element fraction of about 50 M_\u2295 (7% of its total mass). The brightness, near-grazing orientation, and other properties of HAT-P-14 make it a favorable transiting system to look for changes in the orbital elements or transit timing variations induced by a possible second planet, and also to place meaningful constraints on the presence of sub-Earth mass or Earth-mass exomoons, by monitoring it for transit duration variations.", "date": "2010-05-20", "date_type": "published", "publication": "Astrophysical Journal", "volume": "715", "number": "1", "publisher": "American Astronomical Society", "pagerange": "458-467", "id_number": "CaltechAUTHORS:20130107-110055906", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20130107-110055906", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNG04GN74G" }, { "agency": "NASA", "grant_number": "NNX08AF23G" }, { "agency": "Smithsonian Astrophysical Observatory" }, { "agency": "NASA", "grant_number": "NNX09AF59G" }, { "agency": "NSF Astronomy and Astrophysics Fellowship", "grant_number": "AST-0702843" }, { "agency": "NSF Astronomy and Astrophysics Fellowship", "grant_number": "AST-0702821" }, { "agency": "NASA", "grant_number": "NCC2-1390" }, { "agency": "Hungarian Scientific Research Fund (OTKA)", "grant_number": "K-81373" } ] }, "doi": "10.1088/0004-637X/715/1/458", "primary_object": { "basename": "0004-637X_715_1_458.pdf", "url": "https://authors.library.caltech.edu/records/rvkes-spn91/files/0004-637X_715_1_458.pdf" }, "resource_type": "article", "pub_year": "2010", "author_list": "Torres, G.; Bakos, G. \u00c1.; et el." }, { "id": "https://authors.library.caltech.edu/records/zs39c-3w341", "eprint_id": 17758, "eprint_status": "archive", "datestamp": "2023-08-21 23:34:09", "lastmod": "2023-10-20 00:12:45", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Lawler-S-M", "name": { "family": "Lawler", "given": "S. M." }, "orcid": "0000-0001-5368-386X" }, { "id": "Herbst-W", "name": { "family": "Herbst", "given": "W." } }, { "id": "Redfield-S", "name": { "family": "Redfield", "given": "S." }, "orcid": "0000-0003-3786-3486" }, { "id": "Hamilton-C-M", "name": { "family": "Hamilton", "given": "C. M." } }, { "id": "Johns-Krull-C-M", "name": { "family": "Johns-Krull", "given": "C. M." } }, { "id": "Winn-J-N", "name": { "family": "Winn", "given": "J. N." }, "orcid": "0000-0002-4265-047X" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "J. A." } }, { "id": "Mundt-R", "name": { "family": "Mundt", "given": "R." } } ] }, "title": "Gas absorption in the KH 15D system: Further evidence for dust settling in the circumbinary disk", "ispublished": "pub", "full_text_status": "public", "keywords": "circumstellar matter; stars: individual (KH 15D); stars: pre-main sequence", "note": "\u00a9 2010 The American Astronomical Society.\nReceived 2009 October 19; accepted 2010 February 2; published 2010 February 23.\nWe thank Coryn Bailer-Jones for some of the VLT/UVES\ndata, and Suzan Edwards for the spectrum of LkCa 7. S.M.L.\nthanks Roy Kilgard and Peter Plavchan for very helpful advice\nand discussions regarding this paper. W.H. acknowledges\nsupport by NASA through the Origins of the Solar Systems\ngrant NNX08AK35G. C.M.J.-K. acknowledges partial support\nby NASA through Origins of the Solar Systems grant\nNNX08AH86G. J.N.W. gratefully acknowledges the support\nof the MIT Class of 1942 Career Development Professorship.\nJ.A.J. acknowledges support from NSF grant AST-0702821.\nSome of the data presented herein were obtained at the W. M.\nKeck Observatory, which is operated as a scientific partnership\namong the California Institute of Technology, the University of\nCalifornia, and the National Aeronautics and Space Administration.\nThe Observatory was made possible by the generous financial\nsupport of the W.M. Keck Foundation. The authors wish to\nrecognize and acknowledge the very significant cultural role and\nreverence that the summit of Mauna Kea has always had within\nthe indigenous Hawaiian community. We are most fortunate to\nhave the opportunity to conduct observations from this mountain.\nThe Hobby-Eberly Telescope (HET) is a joint project of\nthe University of Texas at Austin, the Pennsylvania State University,\nStanford University, Ludwig-Maximilians-Universitat\nMunchen, and Georg-August-Universitat Gottingen. The HET\nis named in honor of its principal benefactors, William P. Hobby\nand Robert E. Eberly. This paper is based in part on observations\ncollected at the European Organisation for Astronomical\nResearch in the Southern Hemisphere, Chile (Program 074.C-\n0604A).\nFacilities: HET (HRS), Keck:I (HIRES), VLT:Kueyen\n(UVES).\n\nPublished - Lawler2010p7264Astrophys_J.pdf
", "abstract": "Na I D lines in the spectrum of the young binary KH 15D have been analyzed in detail. We find an excess absorption\ncomponent that may be attributed to foreground interstellar absorption, and to gas possibly associated with the\nsolids in the circumbinary disk. The derived column density is log N_(Na I) = 12.5 cm^(\u22122), centered on a radial velocity\nthat is consistent with the systemic velocity. Subtracting the likely contribution of the interstellar medium leaves\nlog N_(Na I) ~ 12.3 cm^(\u22122). There is no detectable change in the gas column density across the \"knife edge\" formed\nby the opaque grain disk, indicating that the gas and solids have very different scale heights, with the solids being\nhighly settled. Our data support a picture of this circumbinary disk as being composed of a very thin particulate\ngrain layer composed of millimeter-sized or larger objects that are settled within whatever remaining gas may be\npresent. This phase of disk evolution has been hypothesized to exist as a prelude to the formation of planetesimals\nthrough gravitational fragmentation, and is expected to be short-lived if much gas were still present in such a disk.\nOur analysis also reveals the presence of excess Na I emission relative to the comparison spectrum at the radial\nvelocity of the currently visible star that plausibly arises within the magnetosphere of this still-accreting young star.", "date": "2010-03-10", "date_type": "published", "publication": "Astrophysical Journal", "volume": "711", "number": "2", "publisher": "American Astronomical Society", "pagerange": "1297-1305", "id_number": "CaltechAUTHORS:20100316-143441474", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20100316-143441474", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNX08AK35G" }, { "agency": "NASA", "grant_number": "NNX08AH86G" }, { "agency": "NSF", "grant_number": "AST-0702821" }, { "agency": "W. M. Keck Foundation" } ] }, "doi": "10.1088/0004-637X/711/2/1297", "primary_object": { "basename": "Lawler2010p7264Astrophys_J.pdf", "url": "https://authors.library.caltech.edu/records/zs39c-3w341/files/Lawler2010p7264Astrophys_J.pdf" }, "resource_type": "article", "pub_year": "2010", "author_list": "Lawler, S. M.; Herbst, W.; et el." }, { "id": "https://authors.library.caltech.edu/records/4c5mm-d8d80", "eprint_id": 36195, "eprint_status": "archive", "datestamp": "2023-08-21 23:25:21", "lastmod": "2023-10-20 22:21:42", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Bakos-G-\u00c1", "name": { "family": "Bakos", "given": "G. \u00c1." }, "orcid": "0000-0001-7204-6727" }, { "id": "Torres-G", "name": { "family": "Torres", "given": "G." }, "orcid": "0000-0002-5286-0251" }, { "id": "P\u00e1l-A", "name": { "family": "P\u00e1l", "given": "A." } }, { "id": "Hartman-J", "name": { "family": "Hartman", "given": "J." } }, { "id": "Kov\u00e1cs-G", "name": { "family": "Kov\u00e1cs", "given": "G\u00e9za" } }, { "id": "Noyes-R-W", "name": { "family": "Noyes", "given": "R. W." } }, { "id": "Latham-D-W", "name": { "family": "Latham", "given": "D. W." }, "orcid": "0000-0001-9911-7388" }, { "id": "Sasselov-D-D", "name": { "family": "Sasselov", "given": "D. D." }, "orcid": "0000-0001-7014-1771" }, { "id": "Sip\u0151cz-B", "name": { "family": "Sip\u0151cz", "given": "B." } }, { "id": "Esquerdo-G-A", "name": { "family": "Esquerdo", "given": "G. A." }, "orcid": "0000-0002-9789-5474" }, { "id": "Fischer-D-A", "name": { "family": "Fischer", "given": "D. A." }, "orcid": "0000-0003-2221-0861" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "J. A." }, "orcid": "0000-0001-9808-7172" }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "G. W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Butler-R-P", "name": { "family": "Butler", "given": "R. P." } }, { "id": "Isaacson-H-T", "name": { "family": "Isaacson", "given": "H." }, "orcid": "0000-0002-0531-1073" }, { "id": "Vogt-S", "name": { "family": "Vogt", "given": "S." }, "orcid": "0000-0002-8034-5513" }, { "id": "Kov\u00e1cs-G", "name": { "family": "Kov\u00e1cs", "given": "G\u00e1bor" } }, { "id": "Fernandez-J", "name": { "family": "Fernandez", "given": "J." } }, { "id": "Mo\u03ccr-A", "name": { "family": "Mo\u03ccr", "given": "A." } }, { "id": "Stefanik-R-P", "name": { "family": "Stefanik", "given": "R. P." } }, { "id": "L\u00e1z\u00e1r-J", "name": { "family": "L\u00e1z\u00e1r", "given": "J." } }, { "id": "Papp-I", "name": { "family": "Papp", "given": "I." } }, { "id": "S\u00e1ri-P", "name": { "family": "S\u00e1ri", "given": "P." } }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "A." }, "orcid": "0000-0001-8638-0320" } ] }, "title": "HAT-P-11b: A Super-Neptune Planet Transiting a Bright K Star in the Kepler Field", "ispublished": "pub", "full_text_status": "public", "keywords": "planetary systems; stars: individual (HAT-P-11, GSC 03561-02092); techniques: photometric; techniques: spectroscopic", "note": "\u00a9 2010 American Astronomical Society. \n\nReceived 2008 December 30; accepted 2010 January 11; published 2010 February 2. \n\nBased in part on observations obtained at the W. M. Keck Observatory,\nwhich is operated by the University of California and the California Institute of\nTechnology. Keck time has been granted by NOAO (A285Hr) and NASA\n(N128Hr).\nHATNet operations have been funded by NASA grants NEG04GN74G, NNX08AF23G, and SAO IR&D grants. Work\nby G.\u00c1.B. and J.A.J. was supported by Postdoctoral Fellowships of the NSF Astronomy and Astrophysics Program\n(AST-0702843 and AST-0702821, respectively). We also acknowledge partial support from theKepler Mission under NASA\nCooperative Agreement NCC2-1390 (PI: D.W.L.). G.K. thanks\nthe Hungarian Scientific Research Foundation (OTKA) for support through grant K-60750. This research has made use of Keck telescope time granted through NOAO (program A285Hr) and NASA (N128Hr). Data presented herein were obtained at the W. M. Keck Observatory from telescope time allocated to NASA through the agency's scientific partnership with the California Institute of Technology and the University of California. The Observatory was made possible by the generous financial support of the W. M. Keck Foundation.\n\nPublished - 0004-637X_710_2_1724.pdf
", "abstract": "We report on the discovery of HAT-P-11b, the smallest radius transiting extrasolar planet (TEP) discovered from the ground, and the first hot Neptune discovered to date by transit searches. HAT-P-11b orbits the bright (V = 9.587) and metal rich ([Fe/H] = +0.31 \u00b1 0.05) K4 dwarf star GSC 03561-02092 with P = 4.8878162 \u00b1 0.0000071 days and produces a transit signal with depth of 4.2 mmag, the shallowest found by transit searches that is due to a confirmed planet. We present a global analysis of the available photometric and radial velocity (RV) data that result in stellar and planetary parameters, with simultaneous treatment of systematic variations. The planet, like its near-twin GJ 436b, is somewhat larger than Neptune (17 M_\u2295, 3.8 R_\u2295) both in mass M_p = 0.081 \u00b1 0.009 M_J(25.8 \u00b1 2.9 M_\u2295) and radius R_p = 0.422 \u00b1 0.014 R_J(4.73 \u00b1 0.16 R_\u2295). HAT-P-11b orbits in an eccentric orbit with e = 0.198 \u00b1 0.046 and \u03c9 = 355\u00ba.2 \u00b1 17\u00ba.3, causing a reflex motion of its parent star with amplitude 11.6 \u00b1 1.2 ms^(\u20131), a challenging detection due to the high level of chromospheric activity of the parent star. Our ephemeris for the transit events is T_c = 2454605.89132 \u00b1 0.00032 (BJD), with duration 0.0957 \u00b1 0.0012 days, and secondary eclipse epoch of 2454608.96 \u00b1 0.15 days (BJD). The basic stellar parameters of the host star are M_\u2605 = 0.809^(+0.020)_(\u20130.027) M_\u2609, R_\u2605 = 0.752 \u00b1 0.021 R_\u2609, and T_(eff\u2605) = 4780 \u00b1 50 K. Importantly, HAT-P-11 will lie on one of the detectors of the forthcoming Kepler mission; this should make possible fruitful investigations of the detailed physical characteristic of both the planet and its parent star at unprecedented precision. We discuss an interesting constraint on the eccentricity of the system by the transit light curve and stellar parameters. This will be particularly useful for eccentric TEPs with low-amplitude RV variations in Kepler's field. We also present a blend analysis, that for the first time treats the case of a blended transiting hot Jupiter mimicking a transiting hot Neptune, and proves that HAT-P-11b is not such a blend.", "date": "2010-02-20", "date_type": "published", "publication": "Astrophysical Journal", "volume": "710", "number": "2", "publisher": "American Astronomical Society", "pagerange": "1724-1745", "id_number": "CaltechAUTHORS:20130107-100501627", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20130107-100501627", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NEG04GN74G" }, { "agency": "NASA", "grant_number": "NNX08AF23G" }, { "agency": "Smithsonian Astrophysical Observatory" }, { "agency": "NSF Astronomy and Astrophysics Fellowship", "grant_number": "AST-0702843" }, { "agency": "NSF Astronomy and Astrophysics Fellowship", "grant_number": "AST-0702821" }, { "agency": "NASA", "grant_number": "NCC2-1390" }, { "agency": "Hungarian Scientific Research Fund (OTKA)", "grant_number": "K-60750" }, { "agency": "W. M. Keck Foundation" } ] }, "doi": "10.1088/0004-637X/710/2/1724", "primary_object": { "basename": "0004-637X_710_2_1724.pdf", "url": "https://authors.library.caltech.edu/records/4c5mm-d8d80/files/0004-637X_710_2_1724.pdf" }, "resource_type": "article", "pub_year": "2010", "author_list": "Bakos, G. \u00c1.; Torres, G.; et el." }, { "id": "https://authors.library.caltech.edu/records/70zhw-t9e95", "eprint_id": 38421, "eprint_status": "archive", "datestamp": "2023-08-21 23:21:13", "lastmod": "2023-10-23 20:09:06", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "P\u00e1l-A", "name": { "family": "P\u00e1l", "given": "Andr\u00e1s" } }, { "id": "Bakos-G-\u00c1", "name": { "family": "Bakos", "given": "G\u00e1sp\u00e1r \u00c1." }, "orcid": "0000-0001-7204-6727" }, { "id": "Torres-G", "name": { "family": "Torres", "given": "Guillermo" }, "orcid": "0000-0002-5286-0251" }, { "id": "Noyes-R-W", "name": { "family": "Noyes", "given": "Robert W." } }, { "id": "Fischer-D-A", "name": { "family": "Fischer", "given": "Debra A." }, "orcid": "0000-0003-2221-0861" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John A." }, "orcid": "0000-0001-9808-7172" }, { "id": "Henry-G-W", "name": { "family": "Henry", "given": "Gregory W." }, "orcid": "0000-0003-4155-8513" }, { "id": "Butler-R-P", "name": { "family": "Butler", "given": "R. Paul" } }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "Geoffrey W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "Andrew W." }, "orcid": "0000-0001-8638-0320" }, { "id": "Sip\u0151cz-B", "name": { "family": "Sip\u0151cz", "given": "Brigitta" } }, { "id": "Latham-D-W", "name": { "family": "Latham", "given": "David W." }, "orcid": "0000-0001-9911-7388" }, { "id": "Esquerdo-G-A", "name": { "family": "Esquerdo", "given": "Gilbert A." }, "orcid": "0000-0002-9789-5474" } ] }, "title": "Refined stellar, orbital and planetary parameters of the eccentric HAT-P-2 planetary system", "ispublished": "pub", "full_text_status": "public", "keywords": "techniques: spectroscopic; stars: fundamental parameters; stars: individual: HD147506, HAT-P-2; planetary systems", "note": "\u00a9 2009 The Authors. Journal compilation \u00a9 2009 RAS.\n\nAccepted 2009 October 8. Received 2009 October 7; in original form 2009 August 12.\n\nThe work by AP was supported by the HATNet project and in part by ESA grant PECS 98073. HATNet operations have been funded by NASA grants NNG04GN74G, NNX08AF23G and SAO IR&D\ngrants. Work of G\u00c1B and JAJ were supported by the Post-doctoral Fellowship of the NSF Astronomy and Astrophysics Program (AST-0702843 and AST-0702821, respectively). GT received partial support from NASA Origins grant NNX09AF59G. We acknowledge partial support also from the Kepler Mission under NASA Cooperative\nAgreement NCC2-1390 (DWL, PI). This research has made\nuse of Keck telescope time granted through NOAO and NASA.\nWe thank the UCO/Lick technical staff for supporting the remote observing capability of the Nickel Telescope, allowing the photometry to be carried out from UC Berkeley. Automated Astronomy at Tennessee State University has been supported long term by NASA and NSF as well as Tennessee State University and the State of Tennessee through its Centers of Excellence program. We are grateful for the comments and suggestions by the referee, Frederic Pont.We\nacknowledge the use of the VizieR service (Ochsenbein, Bauer & Marcout 2000) operated at CDS, Strasbourg, France, of NASA's Astrophysics Data System Abstract Service, and of the 2MASS Catalogue.\n\nPublished - j.1365-2966.2009.15849.x.pdf
", "abstract": "We present refined parameters for the extrasolar planetary system HAT-P-2 (also known as HD 147506), based on new radial velocity and photometric data. HAT-P-2b is a transiting extrasolar planet that exhibits an eccentric orbit. We present a detailed analysis of the planetary and stellar parameters, yielding consistent results for the mass and radius of the star, better constraints on the orbital eccentricity and refined planetary parameters. The improved parameters for the host star are M_\u2605= 1.36 \u00b1 0.04 M_\u2299 and R_\u2605= 1.64 \u00b1 0.08 R_\u2299, while the planet has a mass of M_p= 9.09 \u00b1 0.24 M_Jup and radius of R_p= 1.16 \u00b1 0.08 R_Jup. The refined transit epoch and period for the planet are E= 245 4387.49375 \u00b1 0.00074 (BJD) and P= 5.6334729 \u00b1 0.0000061 (d), and the orbital eccentricity and argument of periastron are e= 0.5171 \u00b1 0.0033 and \u03c9= 185\u00b0.22 \u00b1 0\u00b0.95. These orbital elements allow us to predict the timings of secondary eclipses with a reasonable accuracy of \u223c15 min. We also discuss the effects of this significant eccentricity including the characterization of the asymmetry in the transit light curve. Simple formulae are presented for the above, and these, in turn, can be used to constrain the orbital eccentricity using purely photometric data. These will be particularly useful for very high precision, space-borne observations of transiting planets.", "date": "2010-02-01", "date_type": "published", "publication": "Monthly Notices of the Royal Astronomical Society", "volume": "401", "number": "4", "publisher": "Royal Astronomical Society", "pagerange": "2665-2674", "id_number": "CaltechAUTHORS:20130510-110506020", "issn": "0035-8711", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20130510-110506020", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "HATNet project" }, { "agency": "European Space Agency (ESA)", "grant_number": "PECS 98073" }, { "agency": "NSF Astronomy and Astrophysics Fellowship", "grant_number": "AST-0702843" }, { "agency": "NSF Astronomy and Astrophysics Fellowship", "grant_number": "AST-0702821" }, { "agency": "NASA", "grant_number": "NNX09AF59G" }, { "agency": "NASA", "grant_number": "NCC2-1390" } ] }, "doi": "10.1111/j.1365-2966.2009.15849.x", "primary_object": { "basename": "j.1365-2966.2009.15849.x.pdf", "url": "https://authors.library.caltech.edu/records/70zhw-t9e95/files/j.1365-2966.2009.15849.x.pdf" }, "resource_type": "article", "pub_year": "2010", "author_list": "P\u00e1l, Andr\u00e1s; Bakos, G\u00e1sp\u00e1r \u00c1.; et el." }, { "id": "https://authors.library.caltech.edu/records/dxnwf-7ba39", "eprint_id": 17588, "eprint_status": "archive", "datestamp": "2023-08-19 01:31:58", "lastmod": "2023-10-20 00:01:49", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Apps-K", "name": { "family": "Apps", "given": "Kevin" } }, { "id": "Clubb-K-I", "name": { "family": "Clubb", "given": "Kelsey I." } }, { "id": "Fischer-D-A", "name": { "family": "Fischer", "given": "Debra A." }, "orcid": "0000-0003-2221-0861" }, { "id": "Gaidos-E-J", "name": { "family": "Gaidos", "given": "Eric" }, "orcid": "0000-0002-5258-6846" }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "Andrew" }, "orcid": "0000-0001-8638-0320" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John A." }, "orcid": "0000-0001-9808-7172" }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "Geoffrey W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Isaacson-H-T", "name": { "family": "Isaacson", "given": "Howard" }, "orcid": "0000-0002-0531-1073" }, { "id": "Giguere-M-J", "name": { "family": "Giguere", "given": "Matthew J." } }, { "id": "Valenti-J-A", "name": { "family": "Valenti", "given": "Jeff A." }, "orcid": "0000-0003-3305-6281" }, { "id": "Rodriguez-V", "name": { "family": "Rodriguez", "given": "Victor" } }, { "id": "Chubak-C", "name": { "family": "Chubak", "given": "Carly" } }, { "id": "L\u00e9pine-S", "name": { "family": "L\u00e9pine", "given": "S\u00e9bastien" }, "orcid": "0000-0002-2437-2947" } ] }, "title": "M2K: I. A Jupiter-Mass Planet Orbiting the M3V Star HIP 79431", "ispublished": "pub", "full_text_status": "public", "note": "\u00a9 2010 The Astronomical Society of the Pacific. \n\nReceived 2009 December 10; accepted 2009 December 28; published 2010 January 12. \n\nWe gratefully acknowledge the dedication and support of the\nKeck Observatory staff, especially Grant Hill and Scott Dahm for support of HIRES and Greg Wirth for support of remote\nobserving. D. A. F. acknowledges research support from NASA\ngrant NNX08AF42G as well as NASA support through the\nKeck PI Data Analysis Fund. E. G. acknowledges support by\nNSF grant AST0908419. A. W. H. gratefully acknowledges\nsupport from a Townes Postdoctoral Fellowship at the University\nof California, Berkeley Space Sciences Laboratory.\nData presented herein were obtained at the W. M. Keck Observatory\nfrom telescope time allocated to the National Aeronautics\nand Space Administration through the agency's scientific\npartnership with the California Institute of Technology and the\nUniversity of California. The Observatory was made possible by\nthe generous financial support of the W. M. Keck Foundation.\nThe authors wish to recognize and acknowledge the very significant\ncultural role and reverence that the summit of Mauna Kea\nhas always had within the indigenous Hawaiian community.We\nare most fortunate to have the opportunity to conduct observations\nfrom this mountain.We also thank the University of Hawaii\nTAC for allocation of telescope time. This research has made use\nof the SIMBAD database, operated at CDS, Strasbourg, France,\nand of NASA's Astrophysics Data System Bibliographic\nServices.\n\nPublished - Apps2010p7081Publ_Astron_Soc_Pac.pdf
", "abstract": "Doppler observations from Keck Observatory reveal the presence of a planet with M sin i of 2.1 M_(Jup) orbiting the M3V star HIP 79431. This is the sixth giant planet to be detected in Doppler surveys of M dwarfs and it is one of the most massive planets discovered around an M dwarf star. The planet has an orbital period of 111.7 days and an orbital eccentricity of 0.29. The host star is metal rich, with an estimated [Fe/H] = +0.4. This is the first planet to emerge from our new survey of 1600 M-to-K dwarf stars.", "date": "2010-02", "date_type": "published", "publication": "Publications of the Astronomical Society of the Pacific", "volume": "122", "number": "888", "publisher": "Astronomical Society of the Pacific", "pagerange": "156-161", "id_number": "CaltechAUTHORS:20100225-091019237", "issn": "0004-6280", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20100225-091019237", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNX08AF42G" }, { "agency": "NSF", "grant_number": "AST-0908419" }, { "agency": "UC Berkeley Space Sciences Laboratory" } ] }, "local_group": { "items": [ { "id": "Infrared-Processing-and-Analysis-Center-(IPAC)" } ] }, "doi": "10.1086/651058", "primary_object": { "basename": "Apps2010p7081Publ_Astron_Soc_Pac.pdf", "url": "https://authors.library.caltech.edu/records/dxnwf-7ba39/files/Apps2010p7081Publ_Astron_Soc_Pac.pdf" }, "resource_type": "article", "pub_year": "2010", "author_list": "Apps, Kevin; Clubb, Kelsey I.; et el." }, { "id": "https://authors.library.caltech.edu/records/4c61s-wvf27", "eprint_id": 17660, "eprint_status": "archive", "datestamp": "2023-08-19 01:32:20", "lastmod": "2023-10-20 00:07:12", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "Andrew W." }, "orcid": "0000-0001-8638-0320" }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "Geoffrey W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Bowler-B-P", "name": { "family": "Bowler", "given": "Brendan P." }, "orcid": "0000-0003-2649-2288" }, { "id": "Henry-G-W", "name": { "family": "Henry", "given": "Gregory W." }, "orcid": "0000-0003-4155-8513" }, { "id": "Fischer-D-A", "name": { "family": "Fischer", "given": "Debra A." }, "orcid": "0000-0003-2221-0861" }, { "id": "Apps-K", "name": { "family": "Apps", "given": "Kevin" } }, { "id": "Isaacson-H-T", "name": { "family": "Isaacson", "given": "Howard" }, "orcid": "0000-0002-0531-1073" }, { "id": "Wright-J-T", "name": { "family": "Wright", "given": "Jason T." }, "orcid": "0000-0001-6160-5888" } ] }, "title": "The California Planet Survey. II. A Saturn-Mass Planet Orbiting the M Dwarf Gl 649", "ispublished": "pub", "full_text_status": "public", "note": "\u00a9 2010 Astronomical Society of the Pacific. \n\nReceived 2009 November 7; accepted 2009 December 17; published 2010 January 26. \n\nWe thank the many observers who contributed to the velocities\nreported here. We gratefully acknowledge the efforts and\ndedication of the Keck Observatory staff, especially Grant Hill\nand Scott Dahm for support of HIRES and Greg Wirth for support\nof remote observing. We are also grateful to the time\nassignment committees of NASA, NOAO, and the University\nof California for their generous allocations of observing time.\nWe acknowledge R. Paul Butler and S. S. Vogt for many years\nof contributing to the data presented here. A. W. H. gratefully acknowledges support from a Townes Postdoctoral Fellowship\nat the University of California, Berkeley Space Sciences Laboratory.\nJ. A. J. thanks the NSF Astronomy and Astrophysics\nPostdoctoral Fellowship program for support in the years leading\nto the completion of this work, and acknowledges support\nfrom NSF grant AST-0702821. G. W. M. acknowledges NASA\ngrant NNX06AH52G. J. T.W. received support from NSF grant\nAST-0504874. G. W. H. acknowledges support from NASA,\nNSF, Tennessee State University, and the State of Tennessee\nthrough its Centers of Excellence program. Finally, we wish\nto extend special thanks to those of Hawai'ian ancestry on\nwhose sacred mountain of Mauna Kea we are privileged to\nbe guests. Without their generous hospitality, the Keck observations presented herein would not have been possible.\n\nPublished - Johnson2010p7083Publ_Astron_Soc_Pac.pdf
", "abstract": "We report precise Doppler measurements of the nearby (d = 10.34 pc) M dwarf Gl 649 that reveal the presence of a planet with a minimum mass M_P sin i = 0.328 M_(Jup) in an eccentric (e = 0.30), 598.3 day orbit. Our photometric monitoring reveals Gl 649 to be a new variable star with brightness changes on both rotational and decadal timescales. However, neither of these timescales are consistent with the 600 day Doppler signal and so provide strong support for planetary reflex motion as the best interpretation of the observed radial velocity variations. Gl 649b is only the seventh Doppler-detected giant planet around an M dwarf. The properties of the planet and host-star therefore contribute significant information to our knowledge of planet formation around low-mass stars. We revise and refine the occurrence rate of giant planets around M dwarfs based on the California Planet Survey sample of low-mass stars (M_* < 0.6 M_\u2609). We find that f = 3.4^(+2.2%)_(-0.9%) of stars with M_* < 0.6 M\u2609 harbor planets with M_P sin i > 0.3 M_(Jup) and a < 2.5 AU. When we restrict our analysis to metal-rich stars with [Fe/H] > +0.2, we find that the occurrence rate is 10.7^(+5.9%)_(-4.2%).", "date": "2010-02", "date_type": "published", "publication": "Publications of the Astronomical Society of the Pacific", "volume": "122", "number": "888", "publisher": "Astronomical Society of the Pacific", "pagerange": "149-155", "id_number": "CaltechAUTHORS:20100304-100031836", "issn": "0004-6280", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20100304-100031836", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "University of California" }, { "agency": "NSF Postdoctoral Fellowship" }, { "agency": "NSF Astronomy and Astrophysics Fellowship", "grant_number": "AST-0702821" }, { "agency": "NASA", "grant_number": "NNX06AH52G" }, { "agency": "NSF", "grant_number": "AST-0504874" }, { "agency": "Tennessee State University" }, { "agency": "State of Tennessee Centers of Excellence program" } ] }, "collection": "CaltechAUTHORS", "doi": "10.1086/651007", "primary_object": { "basename": "Johnson2010p7083Publ_Astron_Soc_Pac.pdf", "url": "https://authors.library.caltech.edu/records/4c61s-wvf27/files/Johnson2010p7083Publ_Astron_Soc_Pac.pdf" }, "resource_type": "article", "pub_year": "2010", "author_list": "Johnson, John Asher; Howard, Andrew W.; et el." }, { "id": "https://authors.library.caltech.edu/records/efn0n-kst17", "eprint_id": 17348, "eprint_status": "archive", "datestamp": "2023-08-21 23:15:30", "lastmod": "2023-10-19 23:47:58", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Hirano-Teruyuki", "name": { "family": "Hirano", "given": "Teruyuki" }, "orcid": "0000-0003-3618-7535" }, { "id": "Suto-Yasushi", "name": { "family": "Suto", "given": "Yasushi" } }, { "id": "Taruya-Atsushi", "name": { "family": "Taruya", "given": "Atsushi" } }, { "id": "Narita-Norio", "name": { "family": "Narita", "given": "Norio" } }, { "id": "Sato-Bun'ei", "name": { "family": "Sato", "given": "Bun'ei" } }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" }, { "id": "Winn-J-N", "name": { "family": "Winn", "given": "Joshua N." }, "orcid": "0000-0002-4265-047X" } ] }, "title": "Analytic Description of the Rossiter\u2013Mclaughlin Effect for Transiting Exoplanets: Cross-Correlation Method and Comparison with Simulated Data", "ispublished": "pub", "full_text_status": "public", "keywords": "planetary systems; planets and satellites: formation; stars: rotation; techniques: radial velocities; techniques: spectroscopic", "note": "\u00a9 2010 American Astronomical Society.\nReceived 2009 October 3; accepted 2009 December 2; published 2010 January 4.\nWe thank Wako Aoki for useful advice on the spectral line\nprofiles. The radial velocity analysis in our simulation was\ncarried out on the computer system at the Astronomy Data\nCenter of the National Astronomical Observatory of Japan.\nN.N. is supported by a Japan Society for Promotion of Science\n(JSPS) Fellowship for Research (PD: 20-8141). Y.S. gratefully\nacknowledges the support from the Global Scholars Program of\nPrinceton University. This work is also supported by JSPS Coreto-Core Program \"International Research Network for Dark\nEnergy.\" J.N.W. gratefully acknowledges the support of the\nNASA Origins program through award NNX09AD36G.\n\nPublished - Hirano2010p6898Astrophys_J.pdf
", "abstract": "We obtain analytical expressions for the velocity anomaly due to the Rossiter-McLaughlin (RM) effect, for the case when the anomalous radial velocity is obtained by cross-correlation with a stellar template spectrum. In the limit of vanishing width of the stellar absorption lines, our result reduces to the formula derived by Ohta et al., which is based on the first moment of distorted stellar lines. Our new formula contains a term dependent on the stellar line width, which becomes important when rotational line broadening is appreciable. We generate mock transit spectra for four existing exoplanetary systems (HD 17156, TrES-2, TrES-4, and HD 209458) following the procedure of Winn et al., and find that the new formula is in better agreement with the velocity anomaly extracted from the mock data. Thus, our result provides a more reliable analytical description of the velocity anomaly due to the RM effect, and explains the previously observed dependence of the velocity anomaly on the stellar rotation velocity.", "date": "2010-01-20", "date_type": "published", "publication": "Astrophysical Journal", "volume": "709", "number": "1", "publisher": "American Astronomical Society", "pagerange": "458-469", "id_number": "CaltechAUTHORS:20100129-091514059", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20100129-091514059", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "Japan Society for Promotion of Science (JSPS)", "grant_number": "PD: 20- 8141" }, { "agency": "Princeton University" }, { "agency": "NASA", "grant_number": "NNX09AD36G" } ] }, "doi": "10.1088/0004-637X/709/1/458", "primary_object": { "basename": "Hirano2010p6898Astrophys_J.pdf", "url": "https://authors.library.caltech.edu/records/efn0n-kst17/files/Hirano2010p6898Astrophys_J.pdf" }, "resource_type": "article", "pub_year": "2010", "author_list": "Hirano, Teruyuki; Suto, Yasushi; et el." }, { "id": "https://authors.library.caltech.edu/records/pg42f-na429", "eprint_id": 36193, "eprint_status": "archive", "datestamp": "2023-08-21 23:15:59", "lastmod": "2023-10-20 22:21:39", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Bowler-B-P", "name": { "family": "Bowler", "given": "Brendan P." }, "orcid": "0000-0003-2649-2288" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "Geoffrey W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Henry-G-W", "name": { "family": "Henry", "given": "Gregory W." }, "orcid": "0000-0003-4155-8513" }, { "id": "Peek-K-M-G", "name": { "family": "Peek", "given": "Kathryn M. G." } }, { "id": "Fischer-D-A", "name": { "family": "Fischer", "given": "Debra A." }, "orcid": "0000-0003-2221-0861" }, { "id": "Clubb-K-I", "name": { "family": "Clubb", "given": "Kelsey I." } }, { "id": "Liu-Michael-C", "name": { "family": "Liu", "given": "Michael C." }, "orcid": "0000-0003-2232-7664" }, { "id": "Reffert-S", "name": { "family": "Reffert", "given": "Sabine" } }, { "id": "Schwab-C", "name": { "family": "Schwab", "given": "Chirstian" }, "orcid": "0000-0002-4046-987X" }, { "id": "Lowe-T-B", "name": { "family": "Lowe", "given": "Thomas B." } } ] }, "title": "Retired a Stars and Their Companions. III. Comparing the Mass\u2013Period Distributions of Planets Around A-Type Stars and Sun-Like Stars", "ispublished": "pub", "full_text_status": "public", "keywords": "planetary systems: formation; stars: individual (HD 167042, HD 192699, HD 210702, kappa CrB, 6 Lyn); techniques: radial velocities", "note": "\u00a9 2010 American Astronomical Society. Received 2009 June 10; accepted 2009 December 3; published 2009 December 31. \n\nBased on observations obtained at the Lick Observatory, which is operated\nby the University of California.\nWe thank the referee for their helpful comments on this\narticle. We extend our gratitude to the many CAT observers\nwho have helped with this project over the years, including\nChris McCarthy, Raj Sareen, Howard Isaacson, Joshua Goldston,\nBernieWalp, Julia Kregenow, JasonWright, and Shannon\nPatel. We also gratefully acknowledge the efforts and dedication\nof the Lick Observatory staff, and the time assignment\ncommittee of the University of California for their\ngenerous allocations of observing time. B.P.B. thanks Chris\nBeaumont and Eric Ford for productive discussions about\nMCMC techniques. J.A.J. is an NSF Astronomy and Astrophysics\nPostdoctoral Fellow and acknowledges support from\nthe NSF grant AST-0757887. We appreciate funding from\nNASA grant NNG05GK92G (to G.W.M.). G.W.H. acknowledges\nlong-term support from NASA, NSF, Tennessee State\nUniversity, and the state of Tennessee through its Centers of\nExcellence program. D.A.F. is a Cottrell Science Scholar of\nResearch Corporation and acknowledges support from NASA\ngrant NNG05G164G that made thiswork possible. This research\nmade use of the SIMBAD database operated at CSD, Strasbourg\nFrance, and the NASA ADS database.\n\nPublished - 0004-637X_709_1_396.pdf
", "abstract": "We present an analysis of ~5 years of Lick Observatory radial velocity measurements targeting a uniform sample of 31 intermediate-mass (IM) subgiants (1.5 \u227e M_*/M_\u2609 \u227e 2.0) with the goal of measuring the occurrence rate of Jovian planets around (evolved) A-type stars and comparing the distributions of their orbital and physical characteristics to those of planets around Sun-like stars. We provide updated orbital solutions incorporating new radial velocity measurements for five known planet-hosting stars in our sample; uncertainties in the fitted parameters are assessed using a Markov-Chain Monte Carlo method. The frequency of Jovian planets interior to 3 AU is 26^(+9)_(\u20138)%, which is significantly higher than the 5%-10% frequency observed around solar-mass stars. The median detection threshold for our sample includes minimum masses down to {0.2, 0.3, 0.5, 0.6, 1.3} M_(Jup) within {0.1, 0.3, 0.6, 1.0, 3.0} AU. To compare the properties of planets around IM stars to those around solar-mass stars we synthesize a population of planets based on the parametric relationship dN \u221d M^\u03b1 P^\u03b2 dlnMdlnP, the observed planet frequency, and the detection limits we derived. We find that the values of \u03b1 and \u03b2 for planets around solar-type stars from Cumming et al. fail to reproduce the observed properties of planets in our sample at the 4\u03c3 level, even when accounting for the different planet occurrence rates. Thus, the properties of planets around A stars are markedly different than those around Sun-like stars, suggesting that only a small (~50%) increase in stellar mass has a large influence on the formation and orbital evolution of planets.", "date": "2010-01-20", "date_type": "published", "publication": "Astrophysical Journal", "volume": "709", "number": "1", "publisher": "American Astronomical Society", "pagerange": "396-410", "id_number": "CaltechAUTHORS:20130107-094105764", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20130107-094105764", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NSF", "grant_number": "AST-0757887" }, { "agency": "NASA", "grant_number": "NNG05GK92G" }, { "agency": "NASA" }, { "agency": "NSF" }, { "agency": "Tennessee State University" }, { "agency": "Tennessee Centers of Excellence Program" }, { "agency": "NASA", "grant_number": "NNG05G164G" } ] }, "doi": "10.1088/0004-637X/709/1/396", "primary_object": { "basename": "0004-637X_709_1_396.pdf", "url": "https://authors.library.caltech.edu/records/pg42f-na429/files/0004-637X_709_1_396.pdf" }, "resource_type": "article", "pub_year": "2010", "author_list": "Bowler, Brendan P.; Johnson, John Asher; et el." }, { "id": "https://authors.library.caltech.edu/records/whwhj-a5y20", "eprint_id": 17670, "eprint_status": "archive", "datestamp": "2023-08-19 01:23:58", "lastmod": "2023-10-20 00:08:11", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Borucki-William-J", "name": { "family": "Borucki", "given": "William J." } }, { "id": "Koch-David-G", "name": { "family": "Koch", "given": "David" } }, { "id": "Basri-Gibor", "name": { "family": "Basri", "given": "Gibor" } }, { "id": "Batalha-Natalie-M", "name": { "family": "Batalha", "given": "Natalie M." }, "orcid": "0000-0002-7030-9519" }, { "id": "Brown-Timothy-M", "name": { "family": "Brown", "given": "Timothy" }, "orcid": "0000-0002-1793-9968" }, { "id": "Caldwell-Douglas-A", "name": { "family": "Caldwell", "given": "Douglas" }, "orcid": "0000-0003-1963-9616" }, { "id": "Caldwell-John", "name": { "family": "Caldwell", "given": "John" } }, { "id": "Christensen-Dalsgaard-J\u00f8rgen", "name": { "family": "Christensen-Dalsgaard", "given": "J\u00f8rgen" } }, { "id": "Cochran-William-D", "name": { "family": "Cochran", "given": "William D." }, "orcid": "0000-0001-9662-3496" }, { "id": "DeVore-Edna", "name": { "family": "DeVore", "given": "Edna" } }, { "id": "Dunham-Edward-W", "name": { "family": "Dunham", "given": "Edward W." } }, { "id": "Dupres-Andrea-K", "name": { "family": "Dupree", "given": "Andrea K." } }, { "id": "Gauthier-Thomas-N-III", "name": { "family": "Gauthier", "given": "Thomas N., III" } }, { "id": "Geary-John-C", "name": { "family": "Geary", "given": "John C." } }, { "id": "Gilliland-Ronald-L", "name": { "family": "Gilliland", "given": "Ronald" }, "orcid": "0000-0002-1554-5578" }, { "id": "Gould-Alan", "name": { "family": "Gould", "given": "Alan" } }, { "id": "Howell-Steve-B", "name": { "family": "Howell", "given": "Steve B." }, "orcid": "0000-0002-2532-2853" }, { "id": "Jenkins-Jon-M", "name": { "family": "Jenkins", "given": "Jon M." }, "orcid": "0000-0002-4715-9460" }, { "id": "Kondo-Yoji", "name": { "family": "Kondo", "given": "Yoji" } }, { "id": "Latham-David-W", "name": { "family": "Latham", "given": "David W." }, "orcid": "0000-0001-9911-7388" }, { "id": "Marcy-Geoffrey-W", "name": { "family": "Marcy", "given": "Geoffrey W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Meibom-S\u00f8ren", "name": { "family": "Meibom", "given": "S\u00f8ren" } }, { "id": "Kjeldsen-Hans", "name": { "family": "Kjeldsen", "given": "Hans" } }, { "id": "Lissauer-Jack-J", "name": { "family": "Lissauer", "given": "Jack J." }, "orcid": "0000-0001-6513-1659" }, { "id": "Monet-David-G", "name": { "family": "Monet", "given": "David G." } }, { "id": "Morrison-David-R", "name": { "family": "Morrison", "given": "David" } }, { "id": "Sasselov-Dimitar-D", "name": { "family": "Sasselov", "given": "Dimitar" }, "orcid": "0000-0001-7014-1771" }, { "id": "Tarter-Jill", "name": { "family": "Tarter", "given": "Jill" } }, { "id": "Boss-Alan-P", "name": { "family": "Boss", "given": "Alan" } }, { "id": "Brownlee-Don", "name": { "family": "Brownlee", "given": "Don" } }, { "id": "Owen-Toby", "name": { "family": "Owen", "given": "Toby" } }, { "id": "Buzasi-Derek", "name": { "family": "Buzasi", "given": "Derek" } }, { "id": "Charbonneau-David", "name": { "family": "Charbonneau", "given": "David" }, "orcid": "0000-0002-9003-484X" }, { "id": "Doyle-Laurance-R", "name": { "family": "Doyle", "given": "Laurance" } }, { "id": "Fortney-Jonathan-J", "name": { "family": "Fortney", "given": "Jonathan" }, "orcid": "0000-0002-9843-4354" }, { "id": "Ford-Eric-B", "name": { "family": "Ford", "given": "Eric B." }, "orcid": "0000-0001-6545-639X" }, { "id": "Holman-Matthew-J", "name": { "family": "Holman", "given": "Matthew J." }, "orcid": "0000-0002-1139-4880" }, { "id": "Seager-Sara", "name": { "family": "Seager", "given": "Sara" }, "orcid": "0000-0002-6892-6948" }, { "id": "Steffen-Jason-H", "name": { "family": "Steffen", "given": "Jason H." } }, { "id": "Welsh-William-F", "name": { "family": "Welsh", "given": "William F." }, "orcid": "0000-0003-2381-5301" }, { "id": "Rowe-Jason-F", "name": { "family": "Rowe", "given": "Jason" }, "orcid": "0000-0002-5904-1865" }, { "id": "Anderson-Howard", "name": { "family": "Anderson", "given": "Howard" } }, { "id": "Buchhave-Lars-A", "name": { "family": "Buchhave", "given": "Lars" }, "orcid": "0000-0003-1605-5666" }, { "id": "Ciardi-David-R", "name": { "family": "Ciardi", "given": "David" }, "orcid": "0000-0002-5741-3047" }, { "id": "Walkowics-Luciane", "name": { "family": "Walkowicz", "given": "Luciane" } }, { "id": "Sherry-William-H", "name": { "family": "Sherry", "given": "William" } }, { "id": "Horch-Elliott-P", "name": { "family": "Horch", "given": "Elliott" }, "orcid": "0000-0003-2159-1463" }, { "id": "Isaacson-Howard-T", "name": { "family": "Isaacson", "given": "Howard" }, "orcid": "0000-0002-0531-1073" }, { "id": "Everett-Mark-E", "name": { "family": "Everett", "given": "Mark E." }, "orcid": "0000-0002-0885-7215" }, { "id": "Fischer-Debra-A", "name": { "family": "Fischer", "given": "Debra" }, "orcid": "0000-0003-2221-0861" }, { "id": "Torres-Guillermo", "name": { "family": "Torres", "given": "Guillermo" }, "orcid": "0000-0002-5286-0251" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" }, { "id": "Endl-Michael", "name": { "family": "Endl", "given": "Michael" }, "orcid": "0000-0002-7714-6310" }, { "id": "MacQueen-Phillip-J", "name": { "family": "MacQueen", "given": "Phillip" } }, { "id": "Bryson-Stephen-T", "name": { "family": "Bryson", "given": "Stephen T." }, "orcid": "0000-0003-0081-1797" }, { "id": "Dotson-Jessie-L", "name": { "family": "Dotson", "given": "Jessie" } }, { "id": "Haas-Michael-R", "name": { "family": "Haas", "given": "Michael" } }, { "id": "Kolodziejczak-Jeffrey", "name": { "family": "Kolodziejczak", "given": "Jeffrey" } }, { "id": "Van-Cleve-Jeffrey", "name": { "family": "Van Cleve", "given": "Jeffrey" } }, { "id": "Chandrasekaran-Hema", "name": { "family": "Chandrasekaran", "given": "Hema" } }, { "id": "Twicken-Joseph-D", "name": { "family": "Twicken", "given": "Joseph D." }, "orcid": "0000-0002-6778-7552" }, { "id": "Quintana-Elisa-V", "name": { "family": "Quintana", "given": "Elisa V." } }, { "id": "Clarke-Bruce-D", "name": { "family": "Clarke", "given": "Bruce D." } }, { "id": "Allen-Christopher", "name": { "family": "Allen", "given": "Christopher" } }, { "id": "Li-Jie", "name": { "family": "Li", "given": "Jie" }, "orcid": "0000-0002-3733-4587" }, { "id": "Wu-Haley", "name": { "family": "Wu", "given": "Haley" } }, { "id": "Tenenbaum-Peter", "name": { "family": "Tenenbaum", "given": "Peter" } }, { "id": "Verner-Ekaterina", "name": { "family": "Verner", "given": "Ekaterina" } }, { "id": "Bruhweiler-Frederick-C", "name": { "family": "Bruhweiler", "given": "Frederick" } }, { "id": "Barnes-Jason-W", "name": { "family": "Barnes", "given": "Jason" } }, { "id": "Pr\u0161a-Andrej", "name": { "family": "Pr\u0161a", "given": "Andrej" }, "orcid": "0000-0002-1913-0281" } ] }, "title": "Kepler Planet-Detection Mission: Introduction and First Results", "ispublished": "pub", "full_text_status": "public", "note": "\u00a9 2010 American Association for the Advancement of Science. \n\n1 December 2009; accepted 28 December 2009; published online 5 January 2010. \n\nKepler was competitively selected as the 10th Discovery mission. Funding for this mission is provided by NASA's Science Mission Directorate.\n\nSupplemental Material - 2.pdf
", "abstract": "The Kepler mission was designed to determine the frequency of Earth-sized planets in and near the habitable zone of Sun-like stars. The habitable zone is the region where planetary temperatures are suitable for water to exist on a planet's surface. During the first 6 weeks of observations, Kepler monitored 156,000 stars, and five new exoplanets with sizes between 0.37 and 1.6 Jupiter radii and orbital periods from 3.2 to 4.9 days were discovered. The density of the Neptune-sized Kepler-4b is similar to that of Neptune and GJ 436b, even though the irradiation level is 800,000 times higher. Kepler-7b is one of the lowest-density planets (~0.17 gram per cubic centimeter) yet detected. Kepler-5b, -6b, and -8b confirm the existence of planets with densities lower than those predicted for gas giant planets.", "date": "2010-01-07", "date_type": "published", "publication": "Science", "volume": "327", "number": "2968", "publisher": "American Association for the Advancement of Science", "pagerange": "977-980", "id_number": "CaltechAUTHORS:20100304-142558415", "issn": "0036-8075", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20100304-142558415", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA" } ] }, "collection": "CaltechAUTHORS", "local_group": { "items": [ { "id": "Infrared-Processing-and-Analysis-Center-(IPAC)", "value": "Infrared Processing and Analysis Center (IPAC)" } ] }, "doi": "10.1126/science.1185402", "primary_object": { "basename": "2.pdf", "url": "https://authors.library.caltech.edu/records/whwhj-a5y20/files/2.pdf" }, "resource_type": "article", "pub_year": "2010", "author_list": "Borucki, William J.; Koch, David; et el." }, { "id": "https://authors.library.caltech.edu/records/vwjxt-e6r74", "eprint_id": 36192, "eprint_status": "archive", "datestamp": "2023-08-21 22:54:20", "lastmod": "2023-10-20 22:21:35", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Bakos-G-\u00c1", "name": { "family": "Bakos", "given": "G. \u00c1." }, "orcid": "0000-0001-7204-6727" }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "A. W." }, "orcid": "0000-0001-8638-0320" }, { "id": "Noyes-R-W", "name": { "family": "Noyes", "given": "R. W." } }, { "id": "Hartman-J", "name": { "family": "Hartman", "given": "J." } }, { "id": "Torres-G", "name": { "family": "Torres", "given": "G." }, "orcid": "0000-0002-5286-0251" }, { "id": "Kov\u00e1cs-G", "name": { "family": "Kov\u00e1cs", "given": "G\u00e9za" } }, { "id": "Fischer-D-A", "name": { "family": "Fischer", "given": "D. A." }, "orcid": "0000-0003-2221-0861" }, { "id": "Latham-D-W", "name": { "family": "Latham", "given": "D. W." }, "orcid": "0000-0001-9911-7388" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "J. A." }, "orcid": "0000-0001-9808-7172" }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "G. W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Sasselov-D-D", "name": { "family": "Sasselov", "given": "D. D." }, "orcid": "0000-0001-7014-1771" }, { "id": "Stefanik-R-P", "name": { "family": "Stefanik", "given": "R. P." } }, { "id": "Sip\u0151cz-B", "name": { "family": "Sip\u0151cz", "given": "B." } }, { "id": "Kov\u00e1cs-G", "name": { "family": "Kov\u00e1cs", "given": "G\u00e1bor" } }, { "id": "Esquerdo-G-A", "name": { "family": "Esquerdo", "given": "G. A." }, "orcid": "0000-0002-9789-5474" }, { "id": "P\u00e1l-A", "name": { "family": "P\u00e1l", "given": "A." } }, { "id": "L\u00e1z\u00e1r-J", "name": { "family": "L\u00e1z\u00e1r", "given": "J." } }, { "id": "Papp-I", "name": { "family": "Papp", "given": "I." } }, { "id": "S\u00e1ri-P", "name": { "family": "S\u00e1ri", "given": "P." } } ] }, "title": "HAT-P-13b,c: A Transiting Hot Jupiter with a Massive Outer Companion on an Eccentric Orbit", "ispublished": "pub", "full_text_status": "public", "keywords": "planetary systems; stars: individual (HAT-P-13, GSC 3416-00543); techniques: photometric; techniques: spectroscopic", "note": "\u00a9 2009 American Astronomical Society. Received 2009 July 20; accepted 2009 October 13; published 2009 November 23. \nBased in part on observations obtained at the W. M. Keck Observatory,\nwhich is operated by the University of California and the California Institute of\nTechnology. Keck time has been granted by NOAO (A146Hr, A264Hr) and\nNASA (N128Hr, N145Hr).\nHATNet operations have been funded by NASA grants \nNNG04GN74G, NNX08AF23G and SAO IR&D grants. Work of G.\u00c1.B. and J.A.J. were supported by the Postdoctoral Fellowship\nof the NSF Astronomy and Astrophysics Program (AST-0702843 and AST-0702821, respectively). We acknowledge partial support also from the Kepler Mission under NASA Cooperative\nAgreement NCC2-1390 (PI: D.W.L.). G.K. thanks the Hungarian Scientific Research Foundation (OTKA) for support through grant K-60750. G.T. acknowledges partial support from\nNASA Origins grant NNX09AF59G. This research has made\nuse of Keck telescope time granted through NOAO (program\nA146Hr,A264Hr) and NASA (N128Hr,N145Hr). We are grateful\nto Josh Winn and Matthew Holman for their flexibility in\nswapping nights at the FLWO 1.2 m telescope. We thank the\nanonymous referee for the useful comments that improved this\npaper.\n\nPublished - 0004-637X_707_1_446.pdf
", "abstract": "We report on the discovery of a planetary system with a close-in transiting hot Jupiter on a near circular orbit and a massive outer planet on a highly eccentric orbit. The inner planet, HAT-P-13b, transits the bright V = 10.622 G4 dwarf star GSC 3416 \u2013 00543 every P = 2.916260 \u00b1 0.000010 days, with transit epoch T_c = 2454779.92979 \u00b1 0.00038 (BJD) and duration 0.1345 \u00b1 0.0017 days. The outer planet HAT-P-13c orbits the star every P_2 = 428.5 \u00b1 3.0 days with a nominal transit center (assuming zero impact parameter) of T_(2c) = 2454870.4 \u00b1 1.8 (BJD) or time of periastron passage T_(2,peri) = 2454890.05 \u00b1 0.48 (BJD). Transits of the outer planet have not been observed, and may not be present. The host star has a mass of 1.22^(+0.05)_(\u20130.10) M_\u2609, radius of 1.56 \u00b1 0.08 R_\u2609, effective temperature of 5653 \u00b1 90 K, and is rather metal-rich with [Fe/H] = +0.41 \u00b1 0.08. The inner planetary companion has a mass of 0.853^(+0.029)_(\u20130.046) M_J, and radius of 1.281 \u00b1 0.079 R_J, yielding a mean density of 0.498^(+0.103)_(\u20130.069) g cm^(\u20133). The outer companion has m_2 sin i_2 = 15.2 \u00b1 1.0 M_J, and orbits on a highly eccentric orbit of e_2 = 0.691 \u00b1 0.018. While we have not detected significant transit timing variations of HAT-P-13b, due to gravitational and light-travel time effects, future observations will constrain the orbital inclination of HAT-P-13c, along with its mutual inclination to HAT-P-13b. The HAT-P-13 (b, c) double-planet system may prove extremely valuable for theoretical studies of the formation and dynamics of planetary systems.", "date": "2009-12-10", "date_type": "published", "publication": "Astrophysical Journal", "volume": "707", "number": "1", "publisher": "American Astronomical Society", "pagerange": "446-456", "id_number": "CaltechAUTHORS:20130107-090231874", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20130107-090231874", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNG04GN74G" }, { "agency": "NASA", "grant_number": "NNX08AF23G" }, { "agency": "NSF Astronomy and Astrophysics Fellowship", "grant_number": "AST-0702843" }, { "agency": "NSF Astronomy and Astrophysics Fellowship", "grant_number": "AST-0702821" }, { "agency": "NASA", "grant_number": "NCC2-1390" }, { "agency": "Hungarian Scientific Research Fund (OTKA)", "grant_number": "K-60750" }, { "agency": "NASA", "grant_number": "NNX09AF59G" }, { "agency": "Smithsonian Astrophysical Observatory" } ] }, "doi": "10.1088/0004-637X/707/1/446", "primary_object": { "basename": "0004-637X_707_1_446.pdf", "url": "https://authors.library.caltech.edu/records/vwjxt-e6r74/files/0004-637X_707_1_446.pdf" }, "resource_type": "article", "pub_year": "2009", "author_list": "Bakos, G. \u00c1.; Howard, A. W.; et el." }, { "id": "https://authors.library.caltech.edu/records/verds-e0729", "eprint_id": 17140, "eprint_status": "archive", "datestamp": "2023-08-21 22:43:59", "lastmod": "2023-10-19 22:50:37", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Deokkeun-A", "name": { "family": "Deokkeun", "given": "An" } }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "Jennifer A." }, "orcid": "0000-0001-9808-7172" }, { "id": "Beers-T-C", "name": { "family": "Beers", "given": "Timothy C." }, "orcid": "0000-0003-4573-6233" }, { "id": "Pinsonneault-M-H", "name": { "family": "Pinsonneault", "given": "Marc H." }, "orcid": "0000-0002-7549-7766" }, { "id": "Terndrup-D-M", "name": { "family": "Terndrup", "given": "Donald M." } }, { "id": "Delahaye-F", "name": { "family": "Delahaye", "given": "Franck" } }, { "id": "Sun-Lee-Y", "name": { "family": "Sun-Lee", "given": "Young" } }, { "id": "Masseron-T", "name": { "family": "Masseron", "given": "Thomas" } }, { "id": "Yanny-Brian", "name": { "family": "Yanny", "given": "Brian" }, "orcid": "0000-0002-9541-2678" } ] }, "title": "A Photometric Metallicity Estimate of the Virgo Stellar Overdensity", "ispublished": "pub", "full_text_status": "public", "keywords": "Galaxy: abundances; Galaxy: evolution; Galaxy: formation; Galaxy: halo; Galaxy: stellar content; Galaxy: structure", "note": "\u00a9 2009. The American Astronomical Society. All rights reserved. Received 2009 July 4; accepted 2009 November 5; published 2009 November 24. We thank James Bullock, \u017deljko Ivez\u00edc, Heather Morrison,\nand Katie Schlesinger for useful discussions. T.C.B. and Y.S.L.\nacknowledge partial funding of this work from grant PHY 08-\n22648: Physics Frontiers Center/Joint Institute for Nuclear Astrophysics\n(JINA), awarded by the U.S. National Science Foundation.\nFunding for the SDSS and SDSS-II has been provided\nby the Alfred P. Sloan Foundation, the Participating Institutions,\nthe National Science Foundation, the U.S. Department\nof Energy, the National Aeronautics and Space Administration,\nthe Japanese Monbukagakusho, the Max Planck Society, and\nthe Higher Education Funding Council for England. The SDSS\nWeb site is http://www.sdss.org/.\nThe SDSS is managed by the Astrophysical Research Consortium\nfor the Participating Institutions. The Participating Institutions\nare the American Museum of Natural History, Astrophysical\nInstitute Potsdam, University of Basel, University\nof Cambridge, Case Western Reserve University, University\nof Chicago, Drexel University, Fermilab, the Institute for Advanced\nStudy, the Japan Participation Group, Johns Hopkins\nUniversity, the Joint Institute for Nuclear Astrophysics, the\nKavli Institute for Particle Astrophysics and Cosmology, the\nKorean Scientist Group, the Chinese Academy of Sciences\n(LAMOST), Los Alamos National Laboratory, the Max-Planck\nInstitute for Astronomy (MPIA), the Max-Planck Institute for\nAstrophysics (MPA), New Mexico State University, Ohio State\nUniversity, University of Pittsburgh, University of Portsmouth,\nPrinceton University, the United States Naval Observatory, and\nthe University of Washington.\n\nPublished - An2009p6573Astrophys_J_Lett.pdf
", "abstract": "We determine photometric metal abundance estimates for individual main-sequence stars in the Virgo Overdensity (VOD), which covers almost 1000 deg^2 on the sky, based on a calibration of the metallicity sensitivity of stellar isochrones in the gri filter passbands using field stars with well-determined spectroscopic metal abundances. Despite the low precision of the method for individual stars, we derive [Fe/H] = \u20132.0 \u00b1 0.1(internal) \u00b1 0.5(systematic) for the metal abundance of the VOD from photometric measurements of 0.7 million stars in the northern Galactic hemisphere with heliocentric distances from ~10 kpc to ~20 kpc. The metallicity of the VOD is indistinguishable, within \u0394[Fe/H] \u2264 0.2, from that of field halo stars covering the same distance range. This initial application suggests that the Sloan Digital Sky Survey gri passbands can be used to probe the properties of main-sequence stars beyond ~10 kpc, complementing studies of nearby stars from more metallicity-sensitive color indices that involve the u passband.", "date": "2009-11-24", "date_type": "published", "publication": "Astrophysical Journal Letters", "volume": "707", "number": "1", "publisher": "American Astronomical Society", "pagerange": "L64-L68", "id_number": "CaltechAUTHORS:20100112-090751137", "issn": "2041-8205", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20100112-090751137", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NSF", "grant_number": "PHY 08- 22648" }, { "agency": "Physics Frontiers Center/Joint Institute for Nuclear Astrophysics" }, { "agency": "Alfred P. Sloan Foundation" }, { "agency": "Department of Energy (DOE)" }, { "agency": "NASA" }, { "agency": "Japanese Monbukagakusho" }, { "agency": "Max Planck Society" }, { "agency": "Higher Education Funding Council for England" } ] }, "doi": "10.1088/0004-637X/707/1/L64", "primary_object": { "basename": "An2009p6573Astrophys_J_Lett.pdf", "url": "https://authors.library.caltech.edu/records/verds-e0729/files/An2009p6573Astrophys_J_Lett.pdf" }, "resource_type": "article", "pub_year": "2009", "author_list": "Deokkeun, An; Johnson, Jennifer A.; et el." }, { "id": "https://authors.library.caltech.edu/records/a20qp-6bs65", "eprint_id": 36343, "eprint_status": "archive", "datestamp": "2023-08-21 22:43:53", "lastmod": "2023-10-20 23:01:53", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Hartmann-J-D", "name": { "family": "Hartmann", "given": "J. D." } }, { "id": "Bakos-G-\u00c1", "name": { "family": "Bakos", "given": "G. \u00c1." }, "orcid": "0000-0001-7204-6727" }, { "id": "Torres-G", "name": { "family": "Torres", "given": "G." }, "orcid": "0000-0002-5286-0251" }, { "id": "Kov\u00e1cs-G", "name": { "family": "Kov\u00e1cs", "given": "G\u00e9za" } }, { "id": "Noyes-R-W", "name": { "family": "Noyes", "given": "R. W." } }, { "id": "P\u00e1l-A", "name": { "family": "P\u00e1l", "given": "A." } }, { "id": "Latham-D-W", "name": { "family": "Latham", "given": "D. W." }, "orcid": "0000-0001-9911-7388" }, { "id": "Sip\u0151cz-B", "name": { "family": "Sip\u0151cz", "given": "B." } }, { "id": "Fischer-D-A", "name": { "family": "Fischer", "given": "D. A." }, "orcid": "0000-0003-2221-0861" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "J. A." }, "orcid": "0000-0001-9808-7172" }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "G. W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Butler-R-P", "name": { "family": "Butler", "given": "R. P." } }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "A. W." }, "orcid": "0000-0001-8638-0320" }, { "id": "Esquerdo-G-A", "name": { "family": "Esquerdo", "given": "G. A." }, "orcid": "0000-0002-9789-5474" }, { "id": "Sasselov-D-D", "name": { "family": "Sasselov", "given": "D. D." }, "orcid": "0000-0001-7014-1771" }, { "id": "Kov\u00e1cs-G", "name": { "family": "Kov\u00e1cs", "given": "G\u00e1bor" } }, { "id": "Stefanik-R-P", "name": { "family": "Stefanik", "given": "R. P." } }, { "id": "Fernandez-J-M", "name": { "family": "Fernandez", "given": "J. M." } }, { "id": "L\u00e1z\u00e1r-J", "name": { "family": "L\u00e1z\u00e1r", "given": "J." } }, { "id": "Papp-I", "name": { "family": "Papp", "given": "I." } }, { "id": "S\u00e1ri-P", "name": { "family": "S\u00e1ri", "given": "P." } } ] }, "title": "HAT-P-12b: A Low-Density Sub-Saturn Mass Planet Transiting a Metal-Poor K Dwarf", "ispublished": "pub", "full_text_status": "public", "keywords": "planetary systems; stars: individual (HAT-P-12, GSC 03033 \u2013 00706); techniques: photometric; techniques: spectroscopic", "note": "\u00a9 2009 American Astronomical Society. Received 2009 April 29; accepted 2009 October 13; published 2009 November 5. \nBased in part on observations obtained at the W. M. Keck Observatory,\nwhich is operated by the University of California and the California Institute of\nTechnology. Keck time has been granted by NOAO (A264Hr, A146Hr) and\nNASA (N162Hr, N128Hr).\n\nWe thank the referee, Peter McCullough, for several suggestions\nthat improved the quality of this paper, and Scott Gaudi for a helpful discussion. HATNet operations have been\nfunded by NASA grants NNG04GN74G, NNX08AF23G, and SAO IR&D grants. Work of G.\u00c1.B. and J. Johnson were supported\nby the Postdoctoral Fellowship of the NSF Astronomy\nand Astrophysics Program (AST-0702843 and AST-0702821,\nrespectively). We acknowledge partial support also from the\nKepler Mission under NASA Cooperative Agreement NCC2-\n1390 (D.W.L., PI). G.K. thanks the Hungarian Scientific Research Foundation (OTKA) for support through grant K-60750. This research has made use of Keck telescope time granted through NOAO and NASA. The Digitized Sky Surveys were produced at the Space Telescope Science Institute under U.S. Government grant NAG W-2166. The images of these surveys are based on photographic data obtained using the Oschin Schmidt Telescope on Palomar Mountain and the UK Schmidt Telescope. The plates were processed into the present compressed digital form with the permission of these institutions. This research has made use of the SIMBAD database, operated at CDS, Strasbourg, France.\n\nPublished - 0004-637X_706_1_785.pdf
", "abstract": "We report on the discovery of HAT-P-12b, a transiting extrasolar planet orbiting the moderately bright V \u2248 12.8 K4 dwarf GSC 03033 \u2013 00706, with a period P = 3.2130598 \u00b1 0.0000021 d, transit epoch T_c = 2454419.19556 \u00b1 0.00020 (BJD), and transit duration 0.0974 \u00b1 0.0006 d. The host star has a mass of 0.73 \u00b1 0.02 M_\u2609, radius of 0.70^(+0.02)_(\u20130.01) R_\u2609, effective temperature 4650 \u00b1 60 K, and metallicity [Fe/H] = \u20130.29 \u00b1 0.05. We find a slight correlation between the observed spectral line bisector spans and the radial velocity, so we consider, and rule out, various blend configurations including a blend with a background eclipsing binary, and hierarchical triple systems where the eclipsing body is a star or a planet. We conclude that a model consisting of a single star with a transiting planet best fits the observations, and show that a likely explanation for the apparent correlation is contamination from scattered moonlight. Based on this model, the planetary companion has a mass of 0.211 \u00b1 0.012 M_J and radius of 0.959^(+0.029)_(\u20130.021) R_J yielding a mean density of 0.295 \u00b1 0.025 g cm^(\u20133). Comparing these observations with recent theoretical models, we find that HAT-P-12b is consistent with a ~1-4.5 Gyr, mildly irradiated, H/He-dominated planet with a core mass M_C \u227e 10 M_\u2295. HAT-P-12b is thus the least massive H/He-dominated gas giant planet found to date. This record was previously held by Saturn.", "date": "2009-11-20", "date_type": "published", "publication": "Astrophysical Journal", "volume": "706", "number": "1", "publisher": "American Astronomical Society", "pagerange": "785-796", "id_number": "CaltechAUTHORS:20130114-090013213", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20130114-090013213", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNG04GN74G" }, { "agency": "NASA", "grant_number": "NNX08AF23G" }, { "agency": "Smithsonian Astrophysical Observatory" }, { "agency": "NSF Astronomy and Astrophysics Fellowship", "grant_number": "AST-0702843" }, { "agency": "NSF Astronomy and Astrophysics Fellowship", "grant_number": "AST-0702821" }, { "agency": "NASA", "grant_number": "NCC2-1390" }, { "agency": "Hungarian Scientific Research Fund (OTKA)", "grant_number": "K-60750" }, { "agency": "NASA", "grant_number": "NAG W-2166" } ] }, "doi": "10.1088/0004-637X/706/1/785", "primary_object": { "basename": "0004-637X_706_1_785.pdf", "url": "https://authors.library.caltech.edu/records/a20qp-6bs65/files/0004-637X_706_1_785.pdf" }, "resource_type": "article", "pub_year": "2009", "author_list": "Hartmann, J. D.; Bakos, G. \u00c1.; et el." }, { "id": "https://authors.library.caltech.edu/records/9wj2s-wqt80", "eprint_id": 36345, "eprint_status": "archive", "datestamp": "2023-08-21 22:28:59", "lastmod": "2023-10-20 23:02:00", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Fischer-D-A", "name": { "family": "Fischer", "given": "Debra" }, "orcid": "0000-0003-2221-0861" }, { "id": "Driscoll-P", "name": { "family": "Driscoll", "given": "Peter" } }, { "id": "Isaacson-H-T", "name": { "family": "Isaacson", "given": "Howard" }, "orcid": "0000-0002-0531-1073" }, { "id": "Giguere-M-J", "name": { "family": "Giguere", "given": "Matt" } }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "Geoffrey W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Valenti-J-A", "name": { "family": "Valenti", "given": "Jeff" }, "orcid": "0000-0003-3305-6281" }, { "id": "Wright-J-T", "name": { "family": "Wright", "given": "Jason T." }, "orcid": "0000-0001-6160-5888" }, { "id": "Henry-G-W", "name": { "family": "Henry", "given": "Gregory W." }, "orcid": "0000-0003-4155-8513" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "Andrew" }, "orcid": "0000-0001-8638-0320" }, { "id": "Peek-K-M-G", "name": { "family": "Peek", "given": "Katherine" } }, { "id": "McCarthy-C", "name": { "family": "McCarthy", "given": "Chris" } } ] }, "title": "Five Planets and an Independent Confirmation of HD 196885Ab from Lick Observatory", "ispublished": "pub", "full_text_status": "public", "keywords": "planetary systems; stars: individual (HD 30562, HD 86264, HD 87883, HD 89307, HD 148427, HD 196885)", "note": "\u00a9 2009 American Astronomical Society. \n\nReceived 2009 April 28; accepted 2009 August 13; published 2009 September 10. \n\nBased on observations obtained at the Lick Observatory, which is operated\nby the University of California.\n\nWe gratefully acknowledge the dedication and support of the Lick Observatory staff. D.A.F. acknowledges research support from NASA grant NNX08AF42G. J.A.J. is an NSF Astronomy and Astrophysics Postdoctoral Fellow with support from the NSF grant AST-0702821. A.W.H gratefully acknowledges support from a Townes Postdoctoral Fellowship at the U.C. Berkeley Space Sciences Laboratory. The authors extend thanks to those of Hawaiian ancestry on whose sacred mountain of Mauna Kea we are privileged to be guests. Without their kind hospitality, the Keck observations of HD 87883 would not\nhave been possible. This research has made use of the SIMBAD\ndatabase, operated at CDS, Strasbourg, France, and of NASA's\nAstrophysics Data System Bibliographic Services.", "abstract": "We present time series Doppler data from Lick Observatory that reveal the presence of long-period planetary companions orbiting nearby stars. The typical eccentricity of these massive planets are greater than the mean eccentricity of known exoplanets. HD 30562b has Msin i = 1.29 M_(Jup), with semimajor axis of 2.3 AU and eccentricity 0.76. The host star has a spectral type F8V and is metal rich. HD 86264b has M sin i = 7.0 M_(Jup), \u0251_(rel) = 2.86 AU, an eccentricity e = 0.7 and orbits a metal-rich, F7V star. HD 87883b has M sin i = 1.78 M_(Jup), \u0251_(rel) = 3.6 AU, e = 0.53 and orbits a metal-rich K0V star. HD 89307b has M sin i = 1.78 M_(Jup), \u0251_(rel) = 3.3 AU, e = 0.24 and orbits a G0V star with slightly subsolar metallicity. HD 148427b has M sin i = 0.96 M_(Jup), \u0251_(rel) = 0.93 AU, eccentricity of 0.16 and orbits a metal rich K0 subgiant. We also present velocities for a planet orbiting the F8V metal-rich binary star, HD 196885A. The planet has M sin i = 2.58 M_(Jup), \u0251_(rel) = 2.37 AU, and orbital eccentricity of 0.48, in agreement with the independent discovery by Correia et al.", "date": "2009-10-01", "date_type": "published", "publication": "Astrophysical Journal", "volume": "703", "number": "2", "publisher": "American Astronomical Society", "pagerange": "1545-1556", "id_number": "CaltechAUTHORS:20130114-093634562", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20130114-093634562", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNX08AF42G" }, { "agency": "NSF Astronomy and Astrophysics Fellowship", "grant_number": "AST-0702821" }, { "agency": "UC Berkeley Space Sciences Laboratory Townes Postdoctoral Fellowship" } ] }, "doi": "10.1088/0004-637X/703/2/1545", "primary_object": { "basename": "0004-637X_703_2_1545.pdf", "url": "https://authors.library.caltech.edu/records/9wj2s-wqt80/files/0004-637X_703_2_1545.pdf" }, "resource_type": "article", "pub_year": "2009", "author_list": "Fischer, Debra; Driscoll, Peter; et el." }, { "id": "https://authors.library.caltech.edu/records/14xyf-r8082", "eprint_id": 36508, "eprint_status": "archive", "datestamp": "2023-08-21 22:29:09", "lastmod": "2023-10-20 23:15:03", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Winn-J-N", "name": { "family": "Winn", "given": "Joshua N." }, "orcid": "0000-0002-4265-047X" }, { "id": "Johnson-J-A", "name": { "family": "Johson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" }, { "id": "Albrecht-S", "name": { "family": "Albrecht", "given": "Simon" } }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "Andrew W." }, "orcid": "0000-0001-8638-0320" }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "Geoffrey W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Crossfield-I-J-M", "name": { "family": "Crossfield", "given": "Ian J." }, "orcid": "0000-0002-1835-1891" }, { "id": "Holman-M-J", "name": { "family": "Holman", "given": "Matthew J." }, "orcid": "0000-0002-1139-4880" } ] }, "title": "HAT-P-7: A Retrograde or Polar Orbit, and a Third Body", "ispublished": "pub", "full_text_status": "public", "keywords": "planetary systems; planetary systems: formation; stars: individual (HAT-P-7); stars: rotation", "note": "\u00a9 2009 American Astronomical Society.\n\nReceived 2009 August 12; accepted 2009 August 21; published 2009 September 8.\n\nWe are grateful to Yasushi Suto and Ed Turner for stimulating our interest in this subject; Norio Narita and his team for sharing their data in advance of publication; Dan Fabrycky, Andr\u00e1s P\u00e1l, Darin Raggozine, Scott Tremaine, Bill Welsh, and the anonymous referee for helpful comments on the manuscript; Akito Tajitsu, Tae-Soo Pyo, Mark Everett, Howard Isaacson, and Zach Gazak for assistance with observing; G\u00e1sp\u00e1r Bakos and Joel Hartman for help obtaining telescope time; Eric Gaidos and Debra Fischer for trading telescope time on short notice; and Hector Balbontin for hospitality at Las Campanas Observatory\nwhere this manuscript was written. Some of the data presented herein were obtained at the W.M. Keck Observatory, which is operated as a scientific partnership among the California Institute of Technology, the University of California, and the National Aeronautics and Space Administration, and wasmade possible by the generous financial support of the W. M. Keck Foundation. We extend special thanks to those of Hawaiian ancestry on whose sacred mountain of Mauna Kea we are privileged to be guests. Without their generous hospitality, the Keck observations presented herein would not have been possible. J.A.J. gratefully acknowledges support from the NSF Astronomy and Astrophysics Postdoctoral Fellowship program\n(grant AST-0702821). S.A. acknowledges the support of\nthe Netherlands Organisation for Scientific Research (NWO).\nJ.N.W. gratefully acknowledges support from the NASA Origins\nprogram through awards NNX09AD36G and NNX09AB33G, and from an MIT Class of 1942 Career Development Professorship.\nFacilities: Subaru (HDS), Keck I (HIRES), FLWO 1.2 m\n(Keplercam)\n\nPublished - 1538-4357_703_2_L99.pdf
", "abstract": "We show that the exoplanet HAT-P-7b has an extremely tilted orbit, with a true angle of at least 86\u00b0 with respect to its parent star's equatorial plane, and a strong possibility of retrograde motion. We also report evidence for an additional planet or companion star. The evidence for the unparalleled orbit and the third body is based on precise observations of the star's apparent radial velocity (RV). The anomalous RV due to rotation (the Rossiter-McLaughlin effect) was found to be a blueshift during the first half of the transit and a redshift during the second half, an inversion of the usual pattern, implying that the angle between the sky-projected orbital and stellar angular momentum vectors is 182\u00b0.5 \u00b1 9\u00b0.4. The third body is implicated by excess RV variation of the host star over 2 yr. Some possible explanations for the tilted orbit of HAT-P-7b are a close encounter with another planet, the Kozai effect, and resonant capture by an inward-migrating outer planet.", "date": "2009-10-01", "date_type": "published", "publication": "Astrophysical Journal Letters", "volume": "703", "number": "2", "publisher": "American Astronomical Society", "pagerange": "L99-L103", "id_number": "CaltechAUTHORS:20130122-104348576", "issn": "2041-8205", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20130122-104348576", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NSF Astronomy and Astrophysics Fellowship", "grant_number": "AST-0702821" }, { "agency": "Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO)" }, { "agency": "NASA", "grant_number": "NNX09AD36G" }, { "agency": "NASA", "grant_number": "NNX09AB33G" }, { "agency": "MIT Class of 1942 Career Development Professorship" } ] }, "doi": "10.1088/0004-637X/703/2/L99", "primary_object": { "basename": "1538-4357_703_2_L99.pdf", "url": "https://authors.library.caltech.edu/records/14xyf-r8082/files/1538-4357_703_2_L99.pdf" }, "resource_type": "article", "pub_year": "2009", "author_list": "Winn, Joshua N.; Johson, John Asher; et el." }, { "id": "https://authors.library.caltech.edu/records/gah6d-45y84", "eprint_id": 36346, "eprint_status": "archive", "datestamp": "2023-08-21 22:29:04", "lastmod": "2023-10-20 23:02:03", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Winn-J-N", "name": { "family": "Winn", "given": "Joshua N." }, "orcid": "0000-0002-4265-047X" }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "Andrew W." }, "orcid": "0000-0001-8638-0320" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "Geoffrey W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Gazak-J-Z", "name": { "family": "Gazak", "given": "J. Zachary" } }, { "id": "Starkey-D", "name": { "family": "Starkey", "given": "Donn" } }, { "id": "Ford-E-B", "name": { "family": "Ford", "given": "Eric B." }, "orcid": "0000-0001-6545-639X" }, { "id": "Col\u03ccn-K-D", "name": { "family": "Col\u03ccn", "given": "Knicole D." } }, { "id": "Reyes-F", "name": { "family": "Reyes", "given": "Francisco" } }, { "id": "Nortmann-L", "name": { "family": "Nortmann", "given": "Lisa" } }, { "id": "Dreizler-S", "name": { "family": "Dreizler", "given": "Stefan" } }, { "id": "Odewahn-S-C", "name": { "family": "Odewahn", "given": "Stephen" } }, { "id": "Welsh-W-F", "name": { "family": "Welsh", "given": "William F." }, "orcid": "0000-0003-2381-5301" }, { "id": "Kadakia-S", "name": { "family": "Kadakia", "given": "Shimonee" } }, { "id": "Vanderbei-R-J", "name": { "family": "Vanderbei", "given": "Robert J." } }, { "id": "Adams-E-R", "name": { "family": "Adams", "given": "Elisabeth R." } }, { "id": "Lockhart-M", "name": { "family": "Lockhart", "given": "Matthew" } }, { "id": "Crossfield-I-J-M", "name": { "family": "Crossfield", "given": "Ian J." }, "orcid": "0000-0002-1835-1891" }, { "id": "Valenti-J-A", "name": { "family": "Valenti", "given": "Jeff A." }, "orcid": "0000-0003-3305-6281" }, { "id": "Dantowitz-R", "name": { "family": "Dantowitz", "given": "Ronald" } }, { "id": "Carter-J-A", "name": { "family": "Carter", "given": "Joshua A." } } ] }, "title": "The Transit Ingress and the Tilted Orbit of the Extraordinarily Eccentric Exoplanet HD 80606b", "ispublished": "pub", "full_text_status": "public", "keywords": "planetary systems; planetary systems: formation; stars: individual (HD 80606); stars: rotation", "note": "\u00a9 2009 American Astronomical Society. Received 2009 July 14; accepted 2009 August 19; published 2009 September 16. We thank Carly Chubak for measuring the heliocentric RV,\nDebra Fischer for help with measuring v sin i\u2605, and Dan Fabrycky for interesting discussions about the Kozai mechanism. We thank Philip Choi, Jason Eastman, Mark Everett, Scott Gaudi, Zev Gurman, Marty Hidas,Matt Holman, and Alexander Rudy, for their willingness to join this campaign even though they were not able to participate due to weather or other factors. Mark Everett, Matt Holman, and Dave Latham also helped to gather the out-of-transit data from FLWO. We thank Bill Cochran and Ed Turner for help recruiting participants. We also thank Steve Fossey, Jonathan Irwin, and David Charbonneau for providing their data in a timely and convenient manner. We are grateful to Greg Laughlin, whose enthusiasm and persistence (and, it is suspected, a deal with the devil) led to the discovery\nof the eclipses of HD 80606. Some of the data presented herein were obtained at the W.M. Keck Observatory, which is operated as a scientific partnership among the California Institute of Technology, the University of California, and the National Aeronautics and Space Administration, and wasmade possible by the generous financial support of\nthe W.M.Keck Foundation. We extend special thanks to those of Hawaiian ancestry on whose sacred mountain of Mauna Kea we are privileged to be guests. Without their generous hospitality, the Keck and UH 2.2 m observations presented herein would not have been possible. The MONET network is funded by the Alfried Krupp von Bohlen und Halbach-Stiftung. W.F.W. and S.K. acknowledge support from NASA under grant NNX08AR14G issued through the Kepler Discovery Program. K.D.C., E.B.F., F.J.R., and observations from Rosemary Hill Observatory were supported by the University of Florida. Observations at Mt. Laguna Observatory were supported by the HPWREN network, funded by the National Science Foundation Grant Numbers 0087344 and 0426879 to University of California, San Diego. J.A.J. acknowledges support from an NSF Astronomy and Astrophysics Postdoctoral Fellowship (grant No. AST-0702821). Work by J.N.W. was supported by the NASA Origins program through awards NNX09AD36G and NNX09AB33G. J.N.W. also gratefully acknowledges the support of the MIT Class of 1942 Career Development Professorship. \nFacilities: Keck I (HIRES) FLWO:1.2 m (Keplercam), UH:2.2 m (OPTIC), McD:0.8 m\n\nPublished - 0004-637X_703_2_2091.pdf
", "abstract": "We present the results of a transcontinental campaign to observe the 2009 June 5 transit of the exoplanet HD 80606b. We report the first detection of the transit ingress, revealing the transit duration to be 11.64 \u00b1 0.25 hr and allowing more robust determinations of the system parameters. Keck spectra obtained at midtransit exhibit an anomalous blueshift, giving definitive evidence that the stellar spin axis and planetary orbital axis are misaligned. The Keck data show that the projected spin-orbit angle \u03bb is between 32\u00b0 and 87\u00b0 with 68.3% confidence and between 14\u00b0 and 142\u00b0 with 99.73% confidence. Thus, the orbit of this planet is not only highly eccentric (e = 0.93) but is also tilted away from the equatorial plane of its parent star. A large tilt had been predicted, based on the idea that the planet's eccentric orbit was caused by the Kozai mechanism. Independently of the theory, it is worth noting that all three exoplanetary systems with known spin-orbit misalignments have massive planets on eccentric orbits, suggesting that those systems migrate through a different channel than lower mass planets on circular orbits.", "date": "2009-10-01", "date_type": "published", "publication": "Astrophysical Journal", "volume": "703", "number": "2", "publisher": "American Astronomical Society", "pagerange": "2091-2100", "id_number": "CaltechAUTHORS:20130114-095304108", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20130114-095304108", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "W. M. Keck Foundation" }, { "agency": "Alfried Krupp von Bohlen und Halbach-Stiftung" }, { "agency": "NASA", "grant_number": "NNX08AR14G" }, { "agency": "University of Florida" }, { "agency": "HPWREN network" }, { "agency": "NSF", "grant_number": "OAC-0087344" }, { "agency": "NSF", "grant_number": "OAC-0426879" }, { "agency": "NSF Astronomy and Astrophysics Fellowship", "grant_number": "AST-0702821" }, { "agency": "NASA", "grant_number": "NNX09AD36G" }, { "agency": "NASA", "grant_number": "NNX09AB33G" }, { "agency": "MIT Class of 1942 Career Development Professorship" } ] }, "doi": "10.1088/0004-637X/703/2/2091", "primary_object": { "basename": "0004-637X_703_2_2091.pdf", "url": "https://authors.library.caltech.edu/records/gah6d-45y84/files/0004-637X_703_2_2091.pdf" }, "resource_type": "article", "pub_year": "2009", "author_list": "Winn, Joshua N.; Howard, Andrew W.; et el." }, { "id": "https://authors.library.caltech.edu/records/wzrr4-0sb07", "eprint_id": 36042, "eprint_status": "archive", "datestamp": "2023-08-19 00:14:15", "lastmod": "2023-10-20 22:10:44", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" }, { "id": "Winn-J-N", "name": { "family": "Winn", "given": "Joshua N." }, "orcid": "0000-0002-4265-047X" }, { "id": "Albrecht-S", "name": { "family": "Albrecht", "given": "Simon" } }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "Andrew W." }, "orcid": "0000-0001-8638-0320" }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "Geoffrey W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Gazak-J-Z", "name": { "family": "Gazak", "given": "J. Zachary" } } ] }, "title": "A Third Exoplanetary System with Misaligned Orbital and Stellar Spin Axes", "ispublished": "pub", "full_text_status": "public", "note": "\u00a9 2009 The Astronomical Society of the Pacific.\n\nReceived 2009 July 15; accepted 2009 August 13; published 2009 September 21.\nBased on data collected at Subaru Telescope, which is operated by the\nNational Astronomical Observatory of Japan; the Keck Observatory, which is\noperated as a scientific partnership among the California Institute of Technology,\nthe University of California, and the National Aeronautics and Space Administration;\nand the UH 2.2 m telescope.\n\nWe thank the referee, Dan Fabrycky, for a remarkably timely\nand helpful review. We gratefully acknowledge the assistance\nof the UH 2.2 m telescope staff, including Edwin Sousa, Greg\nOsterman, and John Dvorak. are also indebted to the Subaru\ntelescope staff, including Dr. Tae-Soo Pyo and Dr. Akito Tajitsu.\nSpecial thanks to John Tonry for his helpful discussions and\ncomprehensive instrument documentation for OPTIC, Debra\nFischer for her HDS raw reduction code, and Scott Tremaine\nfor his helpful comments and suggestions. J. A. J. is an NSF\nAstronomy and Astrophysics Postdoctoral Fellow with support\nfrom the NSF grant AST-0702821. J. N. W. thanks the NASA\nOrigins of Solar Systems program for support through awards\nNNX09AD36G and NNX09AB33G, as well as the support\nof the MIT Class of 1942 Career Development Professorship.\nS. A. acknowledges support by a Rubicon fellowship from the\nNetherlands Organisation for Scientific Research (NWO). We\nalso appreciate funding from NASA grant NNG05GK92G\n(to G. W. M.), and A. W. H. gratefully acknowledges support\nfrom a Townes Postdoctoral Fellowship at the UC Berkeley\nSpace Sciences Laboratory. The authors wish to extend special\nthanks to those of Hawaiian ancestry on whose sacred mountain\nof Mauna Kea we are privileged to be guests.Without their generous\nhospitality, the observations presented herein would not\nhave been possible.\n\nPublished - 644604.pdf
", "abstract": "We present evidence that the WASP-14 exoplanetary system has misaligned orbital and stellar-rotational axes, with an angle \u03bb = -33.1\u00b0 \u00b1 7.4\u00b0 between their sky projections. The evidence is based on spectroscopic observations of the Rossiter-McLaughlin effect as well as new photometric observations. WASP-14 is now the third system known to have a significant spin-orbit misalignment, and all three systems have \"super-Jupiter\" planets (M_P > 3 M_(Jup)) and eccentric orbits. This finding suggests that the migration and subsequent orbital evolution of massive, eccentric exoplanets is somehow different from that of less massive close-in Jupiters, the majority of which have well-aligned orbits.", "date": "2009-10", "date_type": "published", "publication": "Publications of the Astronomical Society of the Pacific", "volume": "121", "number": "884", "publisher": "Astronomical Society of the Pacific", "pagerange": "1104-1111", "id_number": "CaltechAUTHORS:20121219-092610774", "issn": "0004-6280", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20121219-092610774", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NSF", "grant_number": "AST-0702821" }, { "agency": "NASA", "grant_number": "NNX09AD36G" }, { "agency": "NASA", "grant_number": "NNX09AB33G" }, { "agency": "MIT Class of 1942 Career Development Professorship" }, { "agency": "Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO)" }, { "agency": "NASA", "grant_number": "NNG05GK92G" }, { "agency": "UC Berkeley Space Sciences Laboratory Townes Postdoctoral Fellowship" } ] }, "collection": "CaltechAUTHORS", "doi": "10.1086/644604", "primary_object": { "basename": "644604.pdf", "url": "https://authors.library.caltech.edu/records/wzrr4-0sb07/files/644604.pdf" }, "resource_type": "article", "pub_year": "2009", "author_list": "Johnson, John Asher; Winn, Joshua N.; et el." }, { "id": "https://authors.library.caltech.edu/records/yh134-63a29", "eprint_id": 36344, "eprint_status": "archive", "datestamp": "2023-08-21 22:23:02", "lastmod": "2023-10-20 23:01:56", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Sato-Bun'ei", "name": { "family": "Sato", "given": "Bun'ei" } }, { "id": "Fischer-D-A", "name": { "family": "Fischer", "given": "Debra A." }, "orcid": "0000-0003-2221-0861" }, { "id": "Ida-Shigeru", "name": { "family": "Ida", "given": "Shigeru" } }, { "id": "Harakawa-Hiroki", "name": { "family": "Harakawa", "given": "Hiroki" }, "orcid": "0000-0002-6197-5544" }, { "id": "Omiya-Masashi", "name": { "family": "Omiya", "given": "Masashi" } }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John A." }, "orcid": "0000-0001-9808-7172" }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "Geoffrey W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Toyota-Eri", "name": { "family": "Toyota", "given": "Eri" } }, { "id": "Hori-Yasunori", "name": { "family": "Hori", "given": "Yasunori" }, "orcid": "0000-0003-4676-0251" }, { "id": "Isaacson-H-T", "name": { "family": "Isaacson", "given": "Howard" }, "orcid": "0000-0002-0531-1073" }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "Andrew W." }, "orcid": "0000-0001-8638-0320" }, { "id": "Peek-K-M-G", "name": { "family": "Peek", "given": "Kathryn M. G." } } ] }, "title": "A Substellar Companion in a 1.3 yr Nearly Circular Orbit of HD 16760", "ispublished": "pub", "full_text_status": "public", "keywords": "planetary systems; stars: individual (HD 16760)", "note": "\u00a9 2009 American Astronomical Society. \n\nReceived 2009 March 2; accepted 2009 July 31; published 2009 August 31. \n\nBased on data collected by the Subaru Telescope, which is operated by the National Astronomical Observatory of Japan. \n\nBased on observations obtained at the W. M. Keck Observatory, which is operated by the University of California and the California Institute of Technology. Keck time has been granted by NOAO and NASA. \n\nWe thank Akito Tajitsu and Tae-Soo Pyo for their expertise\nand support of the Subaru HDS observations. We gratefully\nacknowledge the dedication and support of the Keck\nObservatory staff, in particular Grant Hill for support with HIRES. B.S. is supported by MEXT's program \"Promotion of Environmental Improvement for Independence of Young Researchers\" under the Special Coordination Funds for Promoting Science and Technology. DF gratefully acknowledges support from NASA grant NNG05G164G. This research has made use of the Simbad database, operated at CDS, Strasbourg, France. The authors extend thanks to those of native Hawaiian ancestry on whose sacred mountain of Mauna Kea we are privileged to be guests. Without their generous hospitality, the Subaru and Keck observations presented herein would not have been possible.\n\nPublished - 0004-637X_703_1_671.pdf
", "abstract": "We report the detection of a substellar companion orbiting the G5 dwarf HD 16760 from the N2K sample. Precise Doppler measurements of the star from Subaru and Keck revealed a Keplerian velocity variation with a period of 466.47 \u00b1 0.35 d, a semiamplitude of 407.71 \u00b1 0.84 m s^(\u20131), and an eccentricity of 0.084 \u00b1 0.003. Adopting a stellar mass of 0.78 \u00b1 0.05 M_\u2609, we obtain a minimum mass for the companion of 13.13 \u00b1 0.56 M_(JUP), which is close to the planet/brown-dwarf transition, and the semimajor axis of 1.084 \u00b1 0.023 AU. The nearly circular orbit despite the large mass and intermediate orbital period makes this companion unique among known substellar companions.", "date": "2009-09-20", "date_type": "published", "publication": "Astrophysical Journal", "volume": "703", "number": "1", "publisher": "American Astronomical Society", "pagerange": "671-674", "id_number": "CaltechAUTHORS:20130114-092517170", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20130114-092517170", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "Keck Observatory" }, { "agency": "Ministry of Education, Culture, Sports, Science and Technology (MEXT)" }, { "agency": "NASA", "grant_number": "NNG05G164G" } ] }, "doi": "10.1088/0004-637X/703/1/671", "primary_object": { "basename": "0004-637X_703_1_671.pdf", "url": "https://authors.library.caltech.edu/records/yh134-63a29/files/0004-637X_703_1_671.pdf" }, "resource_type": "article", "pub_year": "2009", "author_list": "Sato, Bun'ei; Fischer, Debra A.; et el." }, { "id": "https://authors.library.caltech.edu/records/ydycs-42469", "eprint_id": 36323, "eprint_status": "archive", "datestamp": "2023-08-21 22:20:16", "lastmod": "2023-10-20 23:00:46", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Valenti-J-A", "name": { "family": "Valenti", "given": "Jeff A." }, "orcid": "0000-0003-3305-6281" }, { "id": "Fischer-D-A", "name": { "family": "Fischer", "given": "Debra" }, "orcid": "0000-0003-2221-0861" }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "Geoffrey W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John A." }, "orcid": "0000-0001-9808-7172" }, { "id": "Henry-G-W", "name": { "family": "Henry", "given": "Gregory W." }, "orcid": "0000-0003-4155-8513" }, { "id": "Wright-J-T", "name": { "family": "Wright", "given": "Jason T." }, "orcid": "0000-0001-6160-5888" }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "Andrew W." }, "orcid": "0000-0001-8638-0320" }, { "id": "Giguere-M-J", "name": { "family": "Giguere", "given": "Matt" } }, { "id": "Isaacson-H-T", "name": { "family": "Isaacson", "given": "Howard" }, "orcid": "0000-0002-0531-1073" } ] }, "title": "Two Exoplanets Discovered at Keck Observatory", "ispublished": "pub", "full_text_status": "public", "keywords": "planetary systems; stars: individual (HD 179079, HD 143174, HD 73534)", "note": "\u00a9 2009 American Astronomical Society. \n\nReceived 2008 December 21; accepted 2009 July 7; published 2009 August 18. \n\nBased on observations obtained at the Keck Observatory, which is operated\nby the University of California. \n\nWe gratefully acknowledge the dedication and support of\nthe Keck Observatory staff, in particular Grant Hill for support with HIRES. D.A.F. acknowledges research support from NASA grant NNX08AF42G. G.W.H. acknowledges support\nfrom NASA, NSF, Tennessee State University, and the State\nof Tennessee through its Centers of Excellence program. We\nthank the NASA Exoplanet Science Institute (NExScI) for support through the KPDA program. We thank the NASA and\nNOAOTelescope assignment committees for allocations of telescope time. The authors extend thanks to those of Hawaiian ancestry on whose sacred mountain of Mauna Kea we are privileged to be guests. Without their kind hospitality, the Keck observations presented here would not have been possible. This research has made use of the SIMBAD database, operated at CDS, Strasbourg, France, and of NASA's Astrophysics Data System Bibliographic Services.\n\nPublished - 0004-637X_702_2_989.pdf
", "abstract": "We present two exoplanets detected at Keck Observatory. HD 179079 is a G5 subgiant that hosts a hot Neptune planet with M sin i = 27.5 M_\u2295 in a 14.48 days, low-eccentricity orbit. The stellar reflex velocity induced by this planet has a semiamplitude of K = 6.6 m s^(\u20131). HD 73534 is a G5 subgiant with a Jupiter-like planet of M sin i = 1.1 M_(Jup) and K = 16 m s^(\u20131) in a nearly circular 4.85 yr orbit. Both stars are chromospherically inactive and metal-rich. We discuss a known, classical bias in measuring eccentricities for orbits with velocity semiamplitudes, K, comparable to the radial velocity uncertainties. For exoplanets with periods longer than 10 days, the observed exoplanet eccentricity distribution is nearly flat for large amplitude systems (K > 80 m s^(\u20131)), but rises linearly toward low eccentricity for lower amplitude systems (K > 20 m s^(\u20131)).", "date": "2009-09-10", "date_type": "published", "publication": "Astrophysical Journal", "volume": "702", "number": "2", "publisher": "American Astronomical Society", "pagerange": "989-997", "id_number": "CaltechAUTHORS:20130111-110711929", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20130111-110711929", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNX08AF42G" }, { "agency": "NSF" }, { "agency": "Tennessee State University" }, { "agency": "State of Tennessee Centers of Excellence program" }, { "agency": "NASA Exoplanet Science Institute (NExScI)" } ] }, "local_group": { "items": [ { "id": "Infrared-Processing-and-Analysis-Center-(IPAC)" } ] }, "doi": "10.1088/0004-637X/702/2/989", "primary_object": { "basename": "0004-637X_702_2_989.pdf", "url": "https://authors.library.caltech.edu/records/ydycs-42469/files/0004-637X_702_2_989.pdf" }, "resource_type": "article", "pub_year": "2009", "author_list": "Valenti, Jeff A.; Fischer, Debra; et el." }, { "id": "https://authors.library.caltech.edu/records/97bfc-kkv13", "eprint_id": 36310, "eprint_status": "archive", "datestamp": "2023-08-21 21:51:54", "lastmod": "2023-10-20 23:00:00", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Winn-J-N", "name": { "family": "Winn", "given": "Joshua N." }, "orcid": "0000-0002-4265-047X" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" }, { "id": "Fabrycky-D-C", "name": { "family": "Fabrycky", "given": "Daniel" }, "orcid": "0000-0003-3750-0183" }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "Andrew W." }, "orcid": "0000-0001-8638-0320" }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "Geoffrey W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Narita-Norio", "name": { "family": "Narita", "given": "Norio" } }, { "id": "Crossfield-I-J-M", "name": { "family": "Crossfield", "given": "Ian J." }, "orcid": "0000-0002-1835-1891" }, { "id": "Suto-Yasushi", "name": { "family": "Suto", "given": "Yasushi" } }, { "id": "Turner-E-L", "name": { "family": "Turner", "given": "Edwin L." } }, { "id": "Esquerdo-G-A", "name": { "family": "Esquerdo", "given": "Gil" }, "orcid": "0000-0002-9789-5474" }, { "id": "Holman-M-J", "name": { "family": "Holman", "given": "Matthew J." }, "orcid": "0000-0002-1139-4880" } ] }, "title": "On the Spin-Orbit Misalignment of the XO-3 Exoplanetary System", "ispublished": "pub", "full_text_status": "public", "keywords": "planetary systems; planetary systems: formation; stars: individual (XO-3, GSC 03727-01064); stars: rotation", "note": "\u00a9 2009 American Astronomical Society. \n\n\nReceived 2009 February 17; accepted 2009 May 19; published 2009 July 1. \nData presented herein were obtained at the W. M. Keck Observatory, which\nis operated as a scientific partnership among the California Institute of\nTechnology, the University of California, and the National Aeronautics and\nSpace Administration, and was made possible by the generous financial\nsupport of the W. M. Keck Foundation.\n\nWe thank Peter McCullough for reminding us about the near-coincidence of the orbital and rotational periods of XO-3b. We are grateful to G\u00e1sp\u00e1r Bakos for trading telescope time at FLWO on short notice, and to Breann Sitarski and Tracy Ly for helping with the observations at Lick Observatory. We are indebted to Lara Winn for enabling this work to be completed in a timely fashion. This work was partly supported by the NASA Origins program through awards NNX09AD36G and NNX09AB33G. J.A.J. acknowledges support from an NSF Astronomy and Astrophysics Postdoctoral Fellowship (grant AST-0702821). This work was partly supported by World Premiere International Research Center Initiative (WPI Initiative), MEXT, Japan.\n\nPublished - 0004-637X_700_1_302.pdf
", "abstract": "We present photometric and spectroscopic observations of the 2009 February 2 transit of the exoplanet XO-3b. The new data show that the planetary orbital axis and stellar rotation axis are misaligned, as reported earlier by H\u00e9brard and coworkers. We find the angle between the sky projections of the two axes to be 37.3 \u00b1 3.7 deg, as compared to the previously reported value of 70 \u00b1 15 deg. The significance of this discrepancy is unclear because there are indications of systematic effects. XO-3b is the first exoplanet known to have a highly inclined orbit relative to the equatorial plane of its parent star, and as such it may fulfill the predictions of some scenarios for the migration of massive planets into close-in orbits. We revisit the statistical analysis of spin-orbit alignment in hot-Jupiter systems. Assuming the stellar obliquities to be drawn from a single Rayleigh distribution, we find the mode of the distribution to be 13^(+5)_(\u20132) deg. However, it remains the case that a model representing two different migration channels\u2014in which some planets are drawn from a perfectly aligned distribution and the rest are drawn from an isotropic distribution\u2014is favored over a single Rayleigh distribution.", "date": "2009-07-20", "date_type": "published", "publication": "Astrophysical Journal", "volume": "700", "number": "1", "publisher": "American Astronomical Society", "pagerange": "302-308", "id_number": "CaltechAUTHORS:20130111-080442356", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20130111-080442356", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNX09AD36G" }, { "agency": "NASA", "grant_number": "NNX09AB33G" }, { "agency": "NSF Astronomy and Astrophysics Fellowship", "grant_number": "AST-0702821" }, { "agency": "Ministry of Education, Culture, Sports, Science and Technology (MEXT)" } ] }, "doi": "10.1088/0004-637X/700/1/302", "primary_object": { "basename": "0004-637X_700_1_302.pdf", "url": "https://authors.library.caltech.edu/records/97bfc-kkv13/files/0004-637X_700_1_302.pdf" }, "resource_type": "article", "pub_year": "2009", "author_list": "Winn, Joshua N.; Johnson, John Asher; et el." }, { "id": "https://authors.library.caltech.edu/records/kxe5r-2s494", "eprint_id": 37338, "eprint_status": "archive", "datestamp": "2023-08-21 21:48:27", "lastmod": "2023-10-23 17:23:03", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Wright-J-T", "name": { "family": "Wright", "given": "J. T." }, "orcid": "0000-0001-6160-5888" }, { "id": "Fischer-D-A", "name": { "family": "Fischer", "given": "D. A." }, "orcid": "0000-0003-2221-0861" }, { "id": "Ford-E-B", "name": { "family": "Ford", "given": "Eric B." }, "orcid": "0000-0001-6545-639X" }, { "id": "Veras-D", "name": { "family": "Veras", "given": "D." }, "orcid": "0000-0001-8014-6162" }, { "id": "Wang-J", "name": { "family": "Wang", "given": "J." } }, { "id": "Henry-G-W", "name": { "family": "Henry", "given": "G. W." }, "orcid": "0000-0003-4155-8513" }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "G. W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "A. W." }, "orcid": "0000-0001-8638-0320" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" } ] }, "title": "A Third Giant Planet Orbiting HIP 14810", "ispublished": "pub", "full_text_status": "public", "keywords": "planetary systems; stars: individual (HIP 14810)", "note": "\u00a9 2009 American Astronomical Society. Received 2009 April 23; accepted 2009 June 2; published 2009 June 19. The work herein is based on observations obtained at the W. M. Keck Observatory, which is operated jointly by the University\nof California and the California Institute of Technology.\nThe Keck Observatory was made possible by the generous financial support of the W. M.Keck Foundation. We wish to recognize and acknowledge the very significant cultural role and reverence that the summit of Mauna Kea has always had within the indigenous Hawaiian community. We are most fortunate to have the opportunity to conduct observations from this mountain. J.T.W. received support from NSF grant AST-0504874. G.W.M. received support from NASA grant NNG06AH52G, and D.A.F. from NASA grant NNG05G164G and the Cottrell Science Scholar Program. G.W.H. acknowledges support from NASA, NSF, Tennessee State University, and the State of Tennessee through its Centers of Excellence program. A.W.H. gratefully acknowledges support from a Townes Postdoctoral Fellowship at the UC Berkeley Space Sciences Laboratory. E.B.F. acknowledges the support of NASA RSA 1326409, and E.B.F. and D.V. acknowledge support of NASA grant NNX09AB35G. J.A.J. is supported by NSF grant AST-0702821. We thank the anonymous referee for a helpful review. We acknowledge the University of Florida High-Performance Computing Center for providing computational resources and support that have contributed to the results reported within this paper. This research has made use of NASA's Astrophysics Data System. This research has made use of the SIMBAD database, operated at CDS, Strasbourg, France. \nFacility Keck:I\n\nPublished - 1538-4357_699_2_L97.pdf
", "abstract": "We present new precision radial velocities and a three-planet Keplerian orbit fit for the V = 8.5, G5 V star HIP 14810. We began observing this star at Keck Observatory as part of the N2K Planet Search Project. Wright et al. announced the inner two planets to this system, and subsequent observations have revealed the outer planet and the proper orbital solution for the middle planet. The planets have minimum masses of 3.9, 1.3, and 0.6 M_(Jup) and orbital periods of 6.67, 147.7, and 952 day, respectively. We have numerically integrated the family of orbital solutions consistent with the data and find that they are stable for at least 10^6 yr. Our photometric search shows that the inner planet does not transit.", "date": "2009-07-10", "date_type": "published", "publication": "Astrophysical Journal Letters", "volume": "699", "number": "2", "publisher": "American Astronomical Society", "pagerange": "L97-L101", "id_number": "CaltechAUTHORS:20130306-093507440", "issn": "2041-8205", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20130306-093507440", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "W. M. Keck Foundation" }, { "agency": "NSF", "grant_number": "AST-0504874" }, { "agency": "NASA", "grant_number": "NNG06AH52G" }, { "agency": "NASA", "grant_number": "NNG05G164G" }, { "agency": "Cottrell Scholar of Research Corporation" }, { "agency": "Tennessee State University" }, { "agency": "State of Tennessee Centers of Excellence program" }, { "agency": "UC Berkeley Space Sciences Laboratory, Townes Postdoctoral Fellowship" }, { "agency": "NASA", "grant_number": "RSA 1326409" }, { "agency": "NASA", "grant_number": "NNX09AB35G" }, { "agency": "NSF Astronomy and Astrophysics Fellowship", "grant_number": "AST-0702821" } ] }, "doi": "10.1088/0004-637X/699/2/L97", "primary_object": { "basename": "1538-4357_699_2_L97.pdf", "url": "https://authors.library.caltech.edu/records/kxe5r-2s494/files/1538-4357_699_2_L97.pdf" }, "resource_type": "article", "pub_year": "2009", "author_list": "Wright, J. T.; Fischer, D. A.; et el." }, { "id": "https://authors.library.caltech.edu/records/parc7-afs12", "eprint_id": 36191, "eprint_status": "archive", "datestamp": "2023-08-21 21:48:22", "lastmod": "2023-10-20 22:21:31", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" }, { "id": "Apps-K", "name": { "family": "Apps", "given": "Kevin" } } ] }, "title": "On the Metal Richness of M Dwarfs with Planets", "ispublished": "pub", "full_text_status": "public", "keywords": "planetary systems; stars: abundances; stars: late-type", "note": "\u00a9 2009 American Astronomical Society. Received 2009 February 12; accepted 2009 April 21; published 2009 June 17. We gratefully acknowledge Geoff Marcy, Jon Swift, Mike\nLiu, Mike Cushing, Andrew West, Debra Fischer and Jeff\nValenti for their helpful conversations and feedback. We also thank the anonymous referee for their helpful feedback. J.A.J. is an NSF Astronomy and Astrophysics Postdoctoral Fellow with support from the NSF grant AST-0702821. This publication makes use of data from the Two Micron All Sky Survey (2MASS), which is a joint project of the University of Massachusetts and the Infrared Processing and Analysis Center; the SIMBAD database operated at CDS, Strasbourge, France; and NASA's Astrophysics Data System Bibliographic Services.\n\nPublished - 0004-637X_699_2_933.pdf
", "abstract": "Knowledge of the metallicities of M dwarfs rests predominantly on the photometric calibration of Bonfils and collaborators, which predicts that M dwarfs in the solar neighborhood, including those with known planets, are systematically metal poor compared to their higher-mass counterparts. We test this prediction using a volume-limited sample of low-mass stars, together with a subset of M dwarfs with high-metallicity, F, G, and K wide binary companions. We find that the Bonfils et al. photometric calibration systematically underestimates the metallicities of our high-metallicity M dwarfs by an average of 0.32 dex. We derive a new photometric metallicity calibration and show that M dwarfs with planets appear to be systematically metal rich, a result that is consistent with the metallicity distribution of FGK dwarfs with planets.", "date": "2009-07-10", "date_type": "published", "publication": "Astrophysical Journal", "volume": "699", "number": "2", "publisher": "American Astronomical Society", "pagerange": "933-937", "id_number": "CaltechAUTHORS:20130107-085104917", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20130107-085104917", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NSF", "grant_number": "AST-0702821" } ] }, "doi": "10.1088/0004-637X/699/2/933", "primary_object": { "basename": "0004-637X_699_2_933.pdf", "url": "https://authors.library.caltech.edu/records/parc7-afs12/files/0004-637X_699_2_933.pdf" }, "resource_type": "article", "pub_year": "2009", "author_list": "Johnson, John Asher and Apps, Kevin" }, { "id": "https://authors.library.caltech.edu/records/t1cbv-cfn03", "eprint_id": 15167, "eprint_status": "archive", "datestamp": "2023-08-20 02:13:50", "lastmod": "2023-10-18 21:02:42", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Cohen-J-G", "name": { "family": "Cohen", "given": "Judith G." }, "orcid": "0000-0002-8039-4673" }, { "id": "Thompson-I-B", "name": { "family": "Thompson", "given": "Ian B." } }, { "id": "Sumi-Takahiro", "name": { "family": "Sumi", "given": "Takahiro" } }, { "id": "Bond-I", "name": { "family": "Bond", "given": "Ian" } }, { "id": "Gould-A-P", "name": { "family": "Gould", "given": "Andrew" } }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "Jennifer A." }, "orcid": "0000-0001-9808-7172" }, { "id": "Huang-Wenjin", "name": { "family": "Huang", "given": "Wenjin" } }, { "id": "Burley-G", "name": { "family": "Burley", "given": "Greg" } } ] }, "title": "Clues to the Metallicity Distribution in the Galactic Bulge: Abundances in MOA-2008-BLG-310S and MOA-2008-BLG-311S", "ispublished": "pub", "full_text_status": "public", "keywords": "Galaxy: bulge gravitational lensing stars: abundances", "note": "\u00a9 2009. The American Astronomical Society. \n\nPrint publication: Issue 1 (2009 July 1). Received 2009 March 2, accepted for publication 2009 April 22. Published 2009 June 9. \n\nJ.G.C. and W.H. are grateful to NSF grant AST-0507219 to J.G.C. for partial support. I.B.T. is grateful for support NSF grant AST-0507325. A.G. was supported by NSF grant 0757888. T. Sumi is grateful for a grant-in-aid for Young Scientists (B) and grant-in-aid for Scientific Research on Priority Areas, \"Development of Extra-solar Planetary Science\" by the Ministry of Education, Culture, Sports, and Technology (MEXT) of Japan. I. Bond is grateful to support from the Marsden Fund of the Royal Society of New Zealand.\n\nPublished - Cohen2009p4791Astrophys_J.pdf
Accepted Version - 0904.2020.pdf
", "abstract": "We present abundance analyses based on high dispersion and high signal-to-noise ratio Magellan spectra of two highly microlensed Galactic bulge stars in the region of the main-sequence turnoff with T_(eff) ~ 5650 K. We find that MOA-2008-BLG-310S has [Fe/H]^8 = +0.41 \u00b1 0.09 dex. We adopt the usual spectroscopic notations that [A/B] \u2261log_(10)(N_A /N_B )^* \u2013 log_10(N_A /N_B )_\u2299, and that log[\u0454(A)] \u2261 log_10(N_A /N_H ) + 12.00, for elements A and B. and MOA-2008-BLG-311S has +0.26 \u00b1 0.09 dex. The abundance ratios for the ~20 elements for which features could be detected in the spectra of each of the two stars follow the trends with [Fe/H] found among samples of bulge giants. Combining these two bulge dwarfs with the results from previous abundance analysis of four other Galactic bulge turnoff region stars, all highly magnified by microlensing, gives a mean [Fe/H] of +0.29 dex. This implies that there is an inconsistency between the Fe-metallicity distribution of the microlensed bulge dwarfs and that derived by the many previous estimates based on surveys of cool, luminous bulge giants, which have mean [Fe/H] ~ \u20130.1 dex. A number of possible mechanisms for producing this difference are discussed. If one ascribes this inconsistency to systematic errors in the abundance analyses, we provide statistical arguments suggesting that a substantial systematic error in the Fe metallicity for one or both of the two cases, bulge dwarfs versus bulge giants, is required which is probably larger than can realistically be accommodated.", "date": "2009-07-01", "date_type": "published", "publication": "Astrophysical Journal", "volume": "699", "number": "1", "publisher": "American Astronomical Society", "pagerange": "66-75", "id_number": "CaltechAUTHORS:20090819-100854699", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20090819-100854699", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NSF", "grant_number": "AST-0507219" }, { "agency": "NSF", "grant_number": "AST-0507325" }, { "agency": "NSF", "grant_number": "AST-0757888" }, { "agency": "Ministry of Education, Culture, Sports, Science and Technology (MEXT)" }, { "agency": "Royal Society of New Zealand" } ] }, "doi": "10.1088/0004-637X/699/1/66", "primary_object": { "basename": "0904.2020.pdf", "url": "https://authors.library.caltech.edu/records/t1cbv-cfn03/files/0904.2020.pdf" }, "related_objects": [ { "basename": "Cohen2009p4791Astrophys_J.pdf", "url": "https://authors.library.caltech.edu/records/t1cbv-cfn03/files/Cohen2009p4791Astrophys_J.pdf" } ], "resource_type": "article", "pub_year": "2009", "author_list": "Cohen, Judith G.; Thompson, Ian B.; et el." }, { "id": "https://authors.library.caltech.edu/records/29gwy-d6907", "eprint_id": 14590, "eprint_status": "archive", "datestamp": "2023-08-21 21:35:38", "lastmod": "2023-10-18 18:08:02", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Bensby-T", "name": { "family": "Bensby", "given": "T." } }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "J. A." }, "orcid": "0000-0001-9808-7172" }, { "id": "Cohen-J-G", "name": { "family": "Cohen", "given": "J." }, "orcid": "0000-0002-8039-4673" }, { "id": "Feltzing-S", "name": { "family": "Feltzing", "given": "S." } }, { "id": "Udalski-A", "name": { "family": "Udalski", "given": "A." }, "orcid": "0000-0001-5207-5619" }, { "id": "Gould-A", "name": { "family": "Gould", "given": "A." } }, { "id": "Huang-Wenjin", "name": { "family": "Huang", "given": "W." } }, { "id": "Thompson-I", "name": { "family": "Thompson", "given": "I." } }, { "id": "Simmerer-J", "name": { "family": "Simmerer", "given": "J." } }, { "id": "Ad\u00e9n-D", "name": { "family": "Ad\u00e9n", "given": "D." } } ] }, "title": "Chemical evolution of the Galactic bulge as traced by microlensed dwarf and subgiant stars. Detailed abundance analysis of OGLE-2008-BLG-209S", "ispublished": "pub", "full_text_status": "public", "keywords": "gravitational lensing; Galaxy: bulge; Galaxy: formation; Galaxy: evolution; stars: fundamental parameters; stars: abundances", "note": "\u00a9 2009 ESO.\nReceived 8 January 2009; accepted 17 March 2009.\nWe would like to thank Bengt Gustafsson, Martin Asplund, Bengt Edvardsson, and Kjell Eriksson for usage of the MARCS model atmosphere program and their suite of stellar abundance (EQWIDTH) programs. Paul Barklem is also thanked for helping us to enlarge the grid of stellar model atmospheres. S.F. is a Royal Swedish Academy of Sciences Research Fellow supported by a grant from the Knut and Alice Wallenberg Foundation. Work by A.G. was supported by NSF Grant AST-0757888. J.C. and W.H. are grateful to NSF grant AST-0507219 for partial support. A.U. acknowledges support by the Polish MNiSW grant N20303032/4275. J.S. is supported by a Marie Curie Incoming International Fellowship. D.A. and S.F. thank the Swedish Research Council for a dedicated travel grant that enabled D.A. to travel to Las Campanas for this observing run.\n\nPublished - Bensby2009p4608Astron_Astrophys.pdf
", "abstract": "Aims. Our aims are twofold. First we aim to evaluate the robustness and accuracy of stellar parameters and detailed elemental abundances that can be derived from high-resolution spectroscopic observations of microlensed dwarf and subgiant stars. We then aim to use microlensed dwarf and subgiant stars to investigate the abundance structure and chemical evolution of the Milky Way Bulge. Contrary to the cool giant stars, with their extremely crowded spectra, the dwarf stars are hotter, their spectra are cleaner, and the elemental abundances of the atmospheres of dwarf and subgiant stars are largely untouched by the internal nuclear processes of the star.\nMethods. We present a detailed elemental abundance analysis of OGLE-2008-BLG-209S, the source star of a new microlensing event towards the Bulge, for which we obtained a high-resolution spectrum with the MIKE spectrograph on the Magellan Clay telescope. We have performed four different analyses of OGLE-2008-BLG-209S. One method is identical to the one used for a large comparison sample of F and G dwarf stars, mainly thin and thick disc stars, in the Solar neighbourhood. We have also re-analysed three previous microlensed dwarf stars OGLE-2006-BLG-265S, MOA-2006-BLG-099S, and OGLE-2007-BLG-349S with the same method. This homogeneous data set, although small, enables a direct comparison between the different stellar populations.\nResults. We find that OGLE-2008-BLG-209S is a subgiant star that has a metallicity of [Fe/H] \u2248 -0.33. It possesses [\u03b1/Fe] enhancements similar to what is found for Bulge giant stars at the same metallicity, and what also is found for nearby thick disc stars at the same metallicity. In contrast, the previous three microlensing dwarf stars have very high metallicities, [Fe/H] \u2273 +0.4, and more solar-like abundance ratios, i.e. [\u03b1/Fe] \u2248 0. The decrease in the [\u03b1/Fe] ratio with [Fe/H] is the typical signature of enrichment from low and intermediate mass stars. We furthermore find that the results for the four Bulge stars, in combination with results from studies of giant stars in the Bulge, seem to favour a secular formation scenario for the Bulge.", "date": "2009-06-01", "date_type": "published", "publication": "Astronomy and Astrophysics", "volume": "499", "number": "3", "publisher": "EDP Sciences", "pagerange": "737-753", "id_number": "CaltechAUTHORS:20090714-144013466", "issn": "0004-6361", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20090714-144013466", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "Knut and Alice Wallenberg Foundation" }, { "agency": "NSF", "grant_number": "AST-0757888" }, { "agency": "NSF", "grant_number": "AST-0507219" }, { "agency": "Ministerstwo Nauki i Szkolnictwa Wy\u017cszego", "grant_number": "N20303032/4275" }, { "agency": "Swedish Research Council" } ] }, "doi": "10.1051/0004-6361/200911629", "primary_object": { "basename": "Bensby2009p4608Astron_Astrophys.pdf", "url": "https://authors.library.caltech.edu/records/29gwy-d6907/files/Bensby2009p4608Astron_Astrophys.pdf" }, "resource_type": "article", "pub_year": "2009", "author_list": "Bensby, T.; Johnson, J. A.; et el." }, { "id": "https://authors.library.caltech.edu/records/my1fm-vr268", "eprint_id": 36691, "eprint_status": "archive", "datestamp": "2023-08-20 01:52:51", "lastmod": "2023-10-20 23:30:02", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Peek-K-M-G", "name": { "family": "Peek", "given": "Kathryn M. G." } }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" }, { "id": "Fischer-D-A", "name": { "family": "Fischer", "given": "Debra A." }, "orcid": "0000-0003-2221-0861" }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "Geoffrey W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Henry-G-W", "name": { "family": "Henry", "given": "Gregory W." }, "orcid": "0000-0003-4155-8513" }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "Andrew W." }, "orcid": "0000-0001-8638-0320" }, { "id": "Wright-J-T", "name": { "family": "Wright", "given": "Jason T." }, "orcid": "0000-0001-6160-5888" }, { "id": "Lowe-T-B", "name": { "family": "Lowe", "given": "Thomas B." } }, { "id": "Reffert-S", "name": { "family": "Reffert", "given": "Sabine" } }, { "id": "Schwab-C", "name": { "family": "Schwab", "given": "Christian" }, "orcid": "0000-0002-4046-987X" }, { "id": "Williams-P-K-G", "name": { "family": "Williams", "given": "Peter K. G." }, "orcid": "0000-0003-3734-3587" }, { "id": "Isaacson-H-T", "name": { "family": "Isaacson", "given": "Howard" }, "orcid": "0000-0002-0531-1073" }, { "id": "Giguere-M-J", "name": { "family": "Giguere", "given": "Matthew J." } } ] }, "title": "Old, Rich, and Eccentric: Two Jovian Planets Orbiting Evolved Metal-Rich Stars", "ispublished": "pub", "full_text_status": "public", "keywords": "Extrasolar Planets", "note": "\u00a9 2009 Astronomical Society of the Pacific. \n\nReceived 2009 March 20; accepted 2009 April 16; published 2009 May 16. \n\nWe are indebted to the many observers who collected spectra of these stars. For HD 16175, we thank the observers Kelsey Clubb, Julia Kregenow, Joshua Peek, Karin Sandstrom, and Julien Spronck. For HD 96167, we thank the observers Gaspar Bakos, R. Paul Butler, Chris McCarthy, Guillermo Torres, Steven S. Vogt, and Joshua Winn. We gratefully acknowledge the dedication and support of the Lick and Keck Observatory staffs, in particular Tony Misch for support with the Hamilton Spectrograph and Grant Hill and Scott Dahm for support with HIRES. JAJ is an NSF Astronomy and Astrophysics Postdoctoral Fellow with support from the NSF grant AST-0702821. DAF acknowledges research support from NASA grant NNX08AF42G. GWH acknowledges that Automated Astronomy at Tennessee State University has been supported by NASA and NSF as well as Tennessee State University and the State of Tennessee through its Centers of Excellence program. We thank the NASA Exoplanet Science Institute (NExScI) for support through the KPDA program. We thank the NASA, NOAO, and UCO/Lick telescope assignment committees for allocations of telescope time. The authors extend thanks to those of Hawaiian ancestry on whose sacred mountain of Mauna Kea we are privileged to be guests. Without their kind hospitality, the Keck observations presented here would not have been possible. This research has made use of the SIMBAD database, operated at CDS, Strasbourg, France, and of NASA's Astrophysics Data System Bibliographic Services.\n\nBased on observations obtained at the Lick Observatory, which is operated\nby the University of California, and on observations obtained at theW. M. Keck\nObservatory, which is operated as a scientific partnership with the University of\nCalifornia, the California Institute of Technology, and the National Aeronautics\nand Space Administration. Keck Observatory was made possible by the generous\nfinancial support of theW. M. Keck Foundation. Keck time has been granted\nby both NASA and the University of California.\n\nPublished - 599862.pdf
", "abstract": "We present radial velocity measurements of two stars observed as part of the Lick Subgiants Planet Search and the Keck N2K survey. Variations in the radial velocities of both stars reveal the presence of Jupiter-mass exoplanets in highly eccentric orbits. HD 16175 is a G0 subgiant from the Lick Subgiants Planet Search, orbited by a planet having a minimum mass of 4.4 MJup, in an eccentric (e = 0.59), 2.71 yr orbit. HD 96167 is a G5 subgiant from the N2K (\"Next 2000\") program at Keck Observatory, orbited by a planet having a minimum mass of 0.68 MJup, in an eccentric (e = 0.71), 1.366 yr orbit. Both stars are relatively massive (M\u22c6 = 1.3 M\u2299) and are very metal rich ([Fe/H] > +0.3). We describe our methods for measuring the stars' radial velocity variations and photometric stability.", "date": "2009-06", "date_type": "published", "publication": "Publications of the Astronomical Society of the Pacific", "volume": "121", "number": "880", "publisher": "Astronomical Society of the Pacific", "pagerange": "613-620", "id_number": "CaltechAUTHORS:20130130-134214221", "issn": "0004-6280", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20130130-134214221", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NSF Astronomy and Astrophysics Fellowship", "grant_number": "AST-0702821" }, { "agency": "NASA", "grant_number": "NNX08AF42G" }, { "agency": "Tennessee State University" }, { "agency": "State of Tennessee Centers of Excellence program" } ] }, "doi": "10.1086/599862", "primary_object": { "basename": "599862.pdf", "url": "https://authors.library.caltech.edu/records/my1fm-vr268/files/599862.pdf" }, "resource_type": "article", "pub_year": "2009", "author_list": "Peek, Kathryn M. G.; Johnson, John Asher; et el." }, { "id": "https://authors.library.caltech.edu/records/4ettd-pq446", "eprint_id": 14764, "eprint_status": "archive", "datestamp": "2023-08-21 21:31:05", "lastmod": "2023-10-18 19:52:38", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Abazajian-K-N", "name": { "family": "Abazajian", "given": "Kevork N." }, "orcid": "0000-0001-9919-6362" }, { "id": "Adelman-McCarthy-J-K", "name": { "family": "Adelman-McCarthy", "given": "Jennifer K." } }, { "id": "Ag\u00fceros-M-A", "name": { "family": "Ag\u00fceros", "given": "Marcel A." }, "orcid": "0000-0001-7077-3664" }, { "id": "Allam-S-S", "name": { "family": "Allam", "given": "Sahar S." } }, { "id": "Allende-Prieto-C", "name": { "family": "Allende Prieto", "given": "Carlos" }, "orcid": "0000-0002-0084-572X" }, { "id": "An-Deokkeun", "name": { "family": "An", "given": "Deokkeun" } }, { "id": "Anderson-K-S-J", "name": { "family": "Anderson", "given": "Kurt S. J." } }, { "id": "Anderson-S-F", "name": { "family": "Anderson", "given": "Scott F." } }, { "id": "Annis-J", "name": { "family": "Annis", "given": "James" } }, { "id": "Bahcall-N-A", "name": { "family": "Bahcall", "given": "Neta A." } }, { "id": "Bailer-Jones-C-A-L", "name": { "family": "Bailer-Jones", "given": "C. A. L." } }, { "id": "Barentine-J-C", "name": { "family": "Barentine", "given": "J. C." } }, { "id": "Bassett-B-A", "name": { "family": "Bassett", "given": "Bruce A." } }, { "id": "Becker-A-C", "name": { "family": "Becker", "given": "Andrew C." } }, { "id": "Beers-T-C", "name": { "family": "Beers", "given": "Timothy C." }, "orcid": "0000-0003-4573-6233" }, { "id": "Bell-E-F", "name": { "family": "Bell", "given": "Eric F." } }, { "id": "Belokurov-V", "name": { "family": "Belokurov", "given": "Vasily" }, "orcid": "0000-0002-0038-9584" }, { "id": "Berlind-A-A", "name": { "family": "Berlind", "given": "Andreas A." } }, { "id": "Berman-E-F", "name": { "family": "Berman", "given": "Eileen F." } }, { "id": "Bernardi-Mariangela", "name": { "family": "Bernardi", "given": "Mariangela" } }, { "id": "Bickerton-S-J", "name": { "family": "Bickerton", "given": "Steven J." } }, { "id": "Bizyaev-D", "name": { "family": "Bizyaev", "given": "Dmitry" } }, { "id": "Blakeslee-J-P", "name": { "family": "Blakeslee", "given": "John P." } }, { "id": "Blanton-M-R", "name": { "family": "Blanton", "given": "Michael R." } }, { "id": "Bochanski-J-J", "name": { "family": "Bochanski", "given": "John J." } }, { "id": "Boroski-N-W", "name": { "family": "Boroski", "given": "William N." } }, { "id": "Brewington-H-J", "name": { "family": "Brewington", "given": "Howard J." } }, { "id": "Brinchmann-J", "name": { "family": "Brinchmann", "given": "Jarle" } }, { "id": "Brinkmann-J", "name": { "family": "Brinkmann", "given": "J." } }, { "id": "Brunner-R-J", "name": { "family": "Brunner", "given": "Robert J." } }, { "id": "Budav\u00e1ri-T", "name": { "family": "Budav\u00e1ri", "given": "Tam\u00e1s" } }, { "id": "Carey-L-N", "name": { "family": "Carey", "given": "Larry N." } }, { "id": "Carliles-S", "name": { "family": "Carliles", "given": "Samuel" } }, { "id": "Carr-M-A", "name": { "family": "Carr", "given": "Michael A." } }, { "id": "Castander-F-J", "name": { "family": "Castander", "given": "Francisco J." }, "orcid": "0000-0001-7316-4573" }, { "id": "Cinabro-D", "name": { "family": "Cinabro", "given": "David" } }, { "id": "Connolly-A-J", "name": { "family": "Connolly", "given": "A. 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Jordan" } }, { "id": "Fiorentin-P-R", "name": { "family": "Fiorentin", "given": "Paola R." } }, { "id": "Richards-G-T", "name": { "family": "Richards", "given": "Gordon T." } }, { "id": "Richmond-M-W", "name": { "family": "Richmond", "given": "Michael" } }, { "id": "Riess-A-G", "name": { "family": "Riess", "given": "Adam G." } }, { "id": "Rix-H-W", "name": { "family": "Rix", "given": "Hans-Walter" }, "orcid": "0000-0003-4996-9069" }, { "id": "Rockosi-C-M", "name": { "family": "Rockosi", "given": "Constance M." } }, { "id": "Sako-Masao", "name": { "family": "Sako", "given": "Masao" } }, { "id": "Schlegel-D-J", "name": { "family": "Schlegel", "given": "David J." }, "orcid": "0000-0002-5042-5088" }, { "id": "Schneider-D-P", "name": { "family": "Schneider", "given": "Donald P." } }, { "id": "Scholz-R-D", "name": { "family": "Scholz", "given": "Ralf-Dieter" } }, { "id": "Schreiber-M-R", "name": { "family": "Schreiber", "given": "Matthias-R" } }, { "id": "Schwope-A-D", "name": { "family": "Schwope", "given": "Axel D." } }, { "id": "Seljak-U", "name": { "family": "Seljak", "given": "Uro\u0161" } }, { "id": "Sesar-B", "name": { "family": "Sesar", "given": "Branimir" }, "orcid": "0000-0002-0834-3978" }, { "id": "Sheldon-E-S", "name": { "family": "Sheldon", "given": "Erin" } }, { "id": "Shimasaku-Kazu", "name": { "family": "Shimasaku", "given": "Kazu" } }, { "id": "Sibley-V-C", "name": { "family": "Sibley", "given": "Valena C." } }, { "id": "Simmons-A-E", "name": { "family": "Simmons", "given": "A. E." } }, { "id": "Sivarani-T", "name": { "family": "Sivarani", "given": "Thirupathi" } }, { "id": "Smith-J-A", "name": { "family": "Smith", "given": "J. Allyn" } }, { "id": "Smith-M-C", "name": { "family": "Smith", "given": "Martin C." } }, { "id": "Smol\u010di\u0107-V", "name": { "family": "Smol\u010di\u0107", "given": "Vernesa" }, "orcid": "0000-0002-3893-8614" }, { "id": "Snedden-S-A", "name": { "family": "Snedden", "given": "Stephanie A." } }, { "id": "Stebbins-A", "name": { "family": "Stebbins", "given": "Albert" } }, { "id": "Steinmetz-M", "name": { "family": "Steinmetz", "given": "Matthias" } }, { "id": "Stoughton-C", "name": { "family": "Stoughton", "given": "Christopher" } }, { "id": "Strauss-M-A", "name": { "family": "Strauss", "given": "Michael A." }, "orcid": "0000-0002-0106-7755" }, { "id": "SubbaRao-M-U", "name": { "family": "SubbaRao", "given": "Mark" } }, { "id": "Suto-Yasushi", "name": { "family": "Suto", "given": "Yasushi" } }, { "id": "Szalay-A-S", "name": { "family": "Szalay", "given": "Alexander S." } }, { "id": "Szapudi-I", "name": { "family": "Szapudi", "given": "Istv\u00e1n" } }, { "id": "Szkody-P", "name": { "family": "Szkody", "given": "Paula" } }, { "id": "Tanaka-Masayuki", "name": { "family": "Tanaka", "given": "Masayuki" }, "orcid": "0000-0002-5011-5178" }, { "id": "Tegmark-M", "name": { "family": "Tegmark", "given": "Max" } }, { "id": "Teodoro-L-F-A", "name": { "family": "Teodoro", "given": "Luis F. A." } }, { "id": "Thakar-A-R", "name": { "family": "Thakar", "given": "Aniruddha R." } }, { "id": "Tremonti-C-A", "name": { "family": "Tremonti", "given": "Christy A." } }, { "id": "Tucker-D-L", "name": { "family": "Tucker", "given": "Douglas L." } }, { "id": "Uomoto-Alan", "name": { "family": "Uomoto", "given": "Alan" } }, { "id": "Vanden-Berk-D-E", "name": { "family": "Vanden Berk", "given": "Daniel E." } }, { "id": "Vandenberg-J", "name": { "family": "Vandenberg", "given": "Jan" } }, { "id": "Vidrih-S", "name": { "family": "Vidrih", "given": "S." } }, { "id": "Vogeley-M-S", "name": { "family": "Vogeley", "given": "Michael S." } }, { "id": "Voges-W", "name": { "family": "Voges", "given": "Wolfgang" } }, { "id": "Vogt-N-P", "name": { "family": "Vogt", "given": "Nicole P." } }, { "id": "Wadadekar-Y", "name": { "family": "Wadadekar", "given": "Yogesh" } }, { "id": "Watters-S", "name": { "family": "Watters", "given": "Shannon" } }, { "id": "Weinberg-D-H", "name": { "family": "Weinberg", "given": "David H." } }, { "id": "West-A-A", "name": { "family": "West", "given": "Andrew A." } }, { "id": "White-S-D-M", "name": { "family": "White", "given": "Simon D. M." } }, { "id": "Wilhite-B-C", "name": { "family": "Wilhite", "given": "Brian C." } }, { "id": "Wonders-A-C", "name": { "family": "Wonders", "given": "Alainna C." } }, { "id": "Yanny-Brian", "name": { "family": "Yanny", "given": "Brian" }, "orcid": "0000-0002-9541-2678" }, { "id": "Yocum-D-R", "name": { "family": "Yocum", "given": "D. R." } }, { "id": "York-D-G", "name": { "family": "York", "given": "Donald G." } }, { "id": "Zehavi-I", "name": { "family": "Zehavi", "given": "Idit" } }, { "id": "Zibetti-S", "name": { "family": "Zibetti", "given": "Stefano" } }, { "id": "Zucker-D-B", "name": { "family": "Zucker", "given": "Daniel B." } } ] }, "title": "The Seventh Data Release of the Sloan Digital Sky Survey", "ispublished": "pub", "full_text_status": "public", "keywords": "atlases; catalogs; surveys", "note": "\u00a9 2009. The American Astronomical Society. Received 2008 December 2; accepted 2009 March 19; published 2009 May 18.\nThis paper represents the end of SDSS-II, the culmination of\na project taking two decades and involving an enormous number\nof scientists from all over the world. We dedicate this paper to\ncolleagues whomade essential contributions to the SDSS but are\nno longer with us: John N. Bahcall, Don Baldwin, Norm Cole,\nArthur Davidsen, Jim Gray, Bohdan Paczy\u0144ski, and David N.\nSchramm. The successful completion of this project is in large\npart a reflection of the hard work and intellectual capital they\nput into it.\nFunding for the SDSS and SDSS-II has been provided by\nthe Alfred P. Sloan Foundation, the Participating Institutions,\nthe National Science Foundation, the U.S. Department of\nEnergy, the National Aeronautics and Space Administration,\nthe Japanese Monbukagakusho, the Max Planck Society, and\nthe Higher Education Funding Council for England. The SDSS\nWeb Site is http://www.sdss.org/.\nThe SDSS is managed by the Astrophysical Research Consortium\nfor the Participating Institutions. The participating institutions\nare the American Museum of Natural History, Astrophysical\nInstitute Potsdam, University of Basel, University\nof Cambridge, Case Western Reserve University, University\nof Chicago, Drexel University, Fermilab, the Institute for Advanced\nStudy, the Japan Participation Group, Johns Hopkins\nUniversity, the Joint Institute for Nuclear Astrophysics, the\nKavli Institute for Particle Astrophysics and Cosmology, the\nKorean Scientist Group, the Chinese Academy of Sciences\n(LAMOST), Los Alamos National Laboratory, theMax-Planck-\nInstitute for Astronomy (MPIA), the Max-Planck-Institute for\nAstrophysics (MPA), New Mexico State University, Ohio State\nUniversity, University of Pittsburgh, University of Portsmouth,\nPrinceton University, the United States Naval Observatory, and\nthe University of Washington.\n\nPublished - Abazajian2009p4499Astrophys_J_Suppl_S.pdf
", "abstract": "This paper describes the Seventh Data Release of the Sloan Digital Sky Survey (SDSS), marking the completion of the original goals of the SDSS and the end of the phase known as SDSS-II. It includes 11,663 deg^2 of imaging data, with most of the ~2000 deg^2 increment over the previous data release lying in regions of low Galactic latitude. The catalog contains five-band photometry for 357 million distinct objects. The survey also includes repeat photometry on a 120\u00b0 long, 2\u00b0.5 wide stripe along the celestial equator in the Southern Galactic Cap, with some regions covered by as many as 90 individual imaging runs. We include a co-addition of the best of these data, going roughly 2 mag fainter than the main survey over 250 deg^2. The survey has completed spectroscopy over 9380 deg^2; the spectroscopy is now complete over a large contiguous area of the Northern Galactic Cap, closing the gap that was present in previous data releases. There are over 1.6 million spectra in total, including 930,000 galaxies, 120,000 quasars, and 460,000 stars. The data release includes improved stellar photometry at low Galactic latitude. The astrometry has all been recalibrated with the second version of the USNO CCD Astrograph Catalog, reducing the rms statistical errors at the bright end to 45 milliarcseconds per coordinate. We further quantify a systematic error in bright galaxy photometry due to poor sky determination; this problem is less severe than previously reported for the majority of galaxies. Finally, we describe a series of improvements to the spectroscopic reductions, including better flat fielding and improved wavelength calibration at the blue end, better processing of objects with extremely strong narrow emission lines, and an improved determination of stellar metallicities.", "date": "2009-06", "date_type": "published", "publication": "Astrophysical Journal Supplement Series", "volume": "182", "number": "2", "publisher": "American Astronomical Society", "pagerange": "543-558", "id_number": "CaltechAUTHORS:20090803-095045101", "issn": "0067-0049", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20090803-095045101", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "Alfred P. Sloan Foundation" }, { "agency": "NSF" }, { "agency": "Department of Energy (DOE)" }, { "agency": "NASA" }, { "agency": "Japanese Monbukagakusho" }, { "agency": "Max Planck Society" }, { "agency": "Higher Education Funding Council for England" } ] }, "local_group": { "items": [ { "id": "Infrared-Processing-and-Analysis-Center-(IPAC)" } ] }, "doi": "10.1088/0067-0049/182/2/543", "primary_object": { "basename": "Abazajian2009p4499Astrophys_J_Suppl_S.pdf", "url": "https://authors.library.caltech.edu/records/4ettd-pq446/files/Abazajian2009p4499Astrophys_J_Suppl_S.pdf" }, "resource_type": "article", "pub_year": "2009", "author_list": "Abazajian, Kevork N.; Adelman-McCarthy, Jennifer K.; et el." }, { "id": "https://authors.library.caltech.edu/records/q77tq-5vj46", "eprint_id": 36312, "eprint_status": "archive", "datestamp": "2023-08-21 21:26:44", "lastmod": "2023-10-20 23:00:10", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Bakos-G-\u00c1", "name": { "family": "Bakos", "given": "G. \u00c1." }, "orcid": "0000-0001-7204-6727" }, { "id": "P\u00e1l-A", "name": { "family": "P\u00e1l", "given": "A." } }, { "id": "Torres-G", "name": { "family": "Torres", "given": "G." }, "orcid": "0000-0002-5286-0251" }, { "id": "Sip\u0151cz-B", "name": { "family": "Sip\u0151cz", "given": "B." } }, { "id": "Latham-D-W", "name": { "family": "Latham", "given": "D. W." }, "orcid": "0000-0001-9911-7388" }, { "id": "Noyes-R-W", "name": { "family": "Noyes", "given": "R. W." } }, { "id": "Kov\u00e1cs-G", "name": { "family": "Kov\u00e1cs", "given": "G\u00e9za" } }, { "id": "Hartman-J", "name": { "family": "Hartman", "given": "J." } }, { "id": "Esquerdo-G-A", "name": { "family": "Esquerdo", "given": "G. A." }, "orcid": "0000-0002-9789-5474" }, { "id": "Fischer-D-A", "name": { "family": "Fischer", "given": "D. A." }, "orcid": "0000-0003-2221-0861" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "J. A." }, "orcid": "0000-0001-9808-7172" }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "G. W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Butler-R-P", "name": { "family": "Butler", "given": "R. P." } }, { "id": "Howard-A-W", "name": { "family": "Howard", "given": "A. W." }, "orcid": "0000-0001-8638-0320" }, { "id": "Sasselov-D-D", "name": { "family": "Sasselov", "given": "D. D." }, "orcid": "0000-0001-7014-1771" }, { "id": "Kov\u00e1cs-G", "name": { "family": "Kov\u00e1cs", "given": "G\u00e1bor" } }, { "id": "Stefanik-R-P", "name": { "family": "Stefanik", "given": "R. P." } }, { "id": "L\u00e1z\u00e1r-J", "name": { "family": "L\u00e1z\u00e1r", "given": "J." } }, { "id": "Papp-I", "name": { "family": "Papp", "given": "I." } }, { "id": "S\u00e1ri-P", "name": { "family": "S\u00e1ri", "given": "P." } } ] }, "title": "HAT-P-10b: A Light and Moderately Hot Jupiter Transiting A K Dwarf", "ispublished": "pub", "full_text_status": "public", "keywords": "planetary systems; stars: individual (HAT-P-10, GSC 02340-01714); techniques: photometric; techniques: spectroscopic", "note": "\u00a9 2009 American Astronomical Society. Received 2008 September 24; accepted 2009 February 18; published 2009 April 28. \nBased in part on observations obtained at the W. M. Keck Observatory,\nwhich is operated by the University of California and the California Institute of\nTechnology. Keck time has been granted by NOAO (A285Hr) and NASA\n(N128Hr).\n\nHATNet operations have been funded by NASA grants\nNNG04GN74G, NNX08AF23G, and SAO IR&D grants. The efforts of G.\u00c1.B. and J.A.J. were supported by the Postdoctoral\nFellowship of the NSF Astronomy and Astrophysics Program\n(AST-0702843 and AST-0702821, respectively). We also acknowledge partial support from the Kepler Mission under NASA Cooperative Agreement NCC2-1390 (PI: D.W.L.). G.K. thanks the Hungarian Scientific Research Foundation (OTKA) for support through grant K-60750. This research has made use of Keck telescope time granted through NOAO (program A285Hr) and NASA (N128Hr).\n\nPublished - 0004-637X_696_2_1950.pdf
", "abstract": "We report on the discovery of HAT-P-10b, one of the lowest mass (0.487 \u00b1 0.018 M_J) transiting extrasolar planets (TEPs) discovered to date by transit searches. HAT-P-10b orbits the moderately bright V = 11.89 K dwarf GSC 02340-01714, with a period P = 3.7224747 \u00b1 0.0000065 days, transit epoch T_c = 2454759.68683 \u00b1 0.00016 (BJD), and duration 0.1090 \u00b1 0.0008 days. HAT-P-10b has a radius of 1.005^(+0.032)_(\u20130.027) R_J yielding a mean density of 0.594 \u00b1 0.052 g cm^(\u20133). Comparing these observations with recent theoretical models we find that HAT-P-10b is consistent with a ~4.5 Gyr, almost pure hydrogen and helium gas giant planet with a 10 M_\u2295 core. With an equilibrium temperature of T_(eq) = 1020 \u00b1 17 K, HAT-P-10b is one of the coldest TEPs. Curiously, its Safronov number \u03b8 = 0.053 \u00b1 0.002 falls close to the dividing line between the two suggested TEP populations.", "date": "2009-05-10", "date_type": "published", "publication": "Astrophysical Journal", "volume": "696", "number": "2", "publisher": "American Astronomical Society", "pagerange": "1950-1955", "id_number": "CaltechAUTHORS:20130111-084302778", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20130111-084302778", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNG04GN74G" }, { "agency": "NASA", "grant_number": "NNX08AF23G" }, { "agency": "Smithsonian Astrophysical Observatory" }, { "agency": "NSF Astronomy and Astrophysics Fellowship", "grant_number": "AST-0702843" }, { "agency": "NSF Astronomy and Astrophysics Fellowship", "grant_number": "AST-0702821" }, { "agency": "NASA", "grant_number": "NCC2-1390" }, { "agency": "Hungarian Scientific Research Fund (OTKA)", "grant_number": "K-60750" } ] }, "doi": "10.1088/0004-637X/696/2/1950", "primary_object": { "basename": "0004-637X_696_2_1950.pdf", "url": "https://authors.library.caltech.edu/records/q77tq-5vj46/files/0004-637X_696_2_1950.pdf" }, "resource_type": "article", "pub_year": "2009", "author_list": "Bakos, G. \u00c1.; P\u00e1l, A.; et el." }, { "id": "https://authors.library.caltech.edu/records/b82a9-qg448", "eprint_id": 36278, "eprint_status": "archive", "datestamp": "2023-08-21 21:24:25", "lastmod": "2023-10-20 22:58:01", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Howard-A-W", "name": { "family": "Howard", "given": "Andrew W." }, "orcid": "0000-0001-8638-0320" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "Geoffrey W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Fischer-D-A", "name": { "family": "Fischer", "given": "Debra A." }, "orcid": "0000-0003-2221-0861" }, { "id": "Wright-J-T", "name": { "family": "Wright", "given": "Jason T." }, "orcid": "0000-0001-6160-5888" }, { "id": "Henry-G-W", "name": { "family": "Henry", "given": "Gregory W." }, "orcid": "0000-0003-4155-8513" }, { "id": "Giguere-M-J", "name": { "family": "Giguere", "given": "Matthew J." } }, { "id": "Isaacson-H-T", "name": { "family": "Isaacson", "given": "Howard" }, "orcid": "0000-0002-0531-1073" }, { "id": "Valenti-J-A", "name": { "family": "Valenti", "given": "Jeff A." }, "orcid": "0000-0003-3305-6281" }, { "id": "Anderson-J", "name": { "family": "Anderson", "given": "Jay" } }, { "id": "Piskunov-N-E", "name": { "family": "Piskunov", "given": "Nikolai E." } } ] }, "title": "The NASA-UC Eta-Earth Program. I. A Super-Earth Orbiting HD 7924", "ispublished": "pub", "full_text_status": "public", "keywords": "planetary systems; stars: individual (HD 7924); techniques: radial velocities", "note": "\u00a9 2009 American Astronomical Society. \n\nReceived 2008 October 31; accepted 2009 January 29; published 2009 April 13. \n\nBased on observations obtained at the W. M. Keck Observatory, which is\noperated jointly by the University of California and the California Institute of\nTechnology. Keck time has been granted by both NASA and the University of\nCalifornia. \n\nWe gratefully acknowledge the efforts and dedication of the\nKeck Observatory staff. We are also grateful to the time assignment committees of NASA, NOAO, and the University of\nCalifornia for their generous allocations of observing time. We acknowledge R. Paul Butler and S. S. Vogt for many years of contributing to the data presented here. A. W. H. gratefully acknowledges support from a Townes Post-doctoral Fellowship at the U. C. Berkeley Space Sciences Laboratory.\nJ.A.J. is an NSF Astronomy and Astrophysics Postdoctoral Fellow and acknowledges support form NSF grant AST-0702821.\nG.W.M. acknowledges NASA grant NNX06AH52G. G.W.H. acknowledges support from NASA, NSF, Tennessee State University, and the State of Tennessee through its Centers of Excellence program. Finally, the authors wish to extend special thanks to those of Hawaiian ancestry on whose sacred mountain of Mauna Kea we are privileged to be guests. Without their generous hospitality, the Keck observations presented herein would not have been possible.\n\nPublished - 0004-637X_696_1_75.pdf
", "abstract": "We report the discovery of the first low-mass planet to emerge from the NASA-UC Eta-Earth Program, a super-Earth orbiting the K0 dwarf HD 7924. Keplerian modeling of precise Doppler radial velocities reveals a planet with minimum mass M_P sin i = 9.26 M_\u2295 in a P = 5.398 d orbit. Based on Keck-HIRES measurements from 2001 to 2008, the planet is robustly detected with an estimated false alarm probability of less than 0.001. Photometric observations using the Automated Photometric Telescopes at Fairborn Observatory show that HD 7924 is photometrically constant over the radial velocity period to 0.19 mmag, supporting the existence of the planetary companion. No transits were detected down to a photometric limit of ~0.5 mmag, eliminating transiting planets with a variety of compositions. HD 7924b is one of only eight planets detected by the radial velocity technique with M_P sin i < 10 M_\u2295 and as such is a member of an emerging family of low-mass planets that together constrain theories of planet formation.", "date": "2009-05-01", "date_type": "published", "publication": "Astrophysical Journal", "volume": "696", "number": "1", "publisher": "American Astronomical Society", "pagerange": "75-83", "id_number": "CaltechAUTHORS:20130109-134701105", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20130109-134701105", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "UC Berkeley Space Sciences Laboratory Townes Postdoctoral Fellowship" }, { "agency": "NSF Astronomy and Astrophysics Fellowship", "grant_number": "AST-0702821" }, { "agency": "NASA", "grant_number": "NNX06AH52G" }, { "agency": "Tennessee State University" }, { "agency": "State of Tennessee Centers of Excellence program" } ] }, "doi": "10.1088/0004-637X/696/1/75", "primary_object": { "basename": "0004-637X_696_1_75.pdf", "url": "https://authors.library.caltech.edu/records/b82a9-qg448/files/0004-637X_696_1_75.pdf" }, "resource_type": "article", "pub_year": "2009", "author_list": "Howard, Andrew W.; Johnson, John Asher; et el." }, { "id": "https://authors.library.caltech.edu/records/fbke4-kvj66", "eprint_id": 36043, "eprint_status": "archive", "datestamp": "2023-08-20 01:22:27", "lastmod": "2023-10-20 22:10:47", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" } ] }, "title": "International Year of Astronomy Invited Review on Exoplanets", "ispublished": "pub", "full_text_status": "public", "note": "\u00a9 2009 The Astronomical Society of the Pacific.\n\nReceived 2009 February 12; accepted 2009 March 6; published 2009 April 29.\n\nPublished - 598984.pdf
", "abstract": "Just 14 years ago the Solar System represented the only known planetary system in the Galaxy, and conceptions of planet formation were shaped by this sample of one. Since then, 320 planets have been discovered orbiting 276 individual stars. This large and growing ensemble of exoplanets has informed theories of planet formation, placed the Solar System in a broader context, and revealed many surprises along the way. In this review I provide an overview of what has been learned from studies of the occurrence, orbits, and physical structures of exoplanets. After taking a look back at how far the field has advanced, I will discuss some of the future directions of exoplanetary science, with an eye toward the detection and charactarization of Earth-like planets around other stars.", "date": "2009-04", "date_type": "published", "publication": "Publications of the Astronomical Society of the Pacific", "volume": "121", "number": "878", "publisher": "Astronomical Society of the Pacific", "pagerange": "309-315", "id_number": "CaltechAUTHORS:20121219-095443037", "issn": "0004-6280", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20121219-095443037", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "doi": "10.1086/598984", "primary_object": { "basename": "598984.pdf", "url": "https://authors.library.caltech.edu/records/fbke4-kvj66/files/598984.pdf" }, "resource_type": "article", "pub_year": "2009", "author_list": "Johnson, John Asher" }, { "id": "https://authors.library.caltech.edu/records/xmk97-s0011", "eprint_id": 36279, "eprint_status": "archive", "datestamp": "2023-08-20 01:10:08", "lastmod": "2023-10-20 22:58:04", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Wright-J-T", "name": { "family": "Wright", "given": "J. T." }, "orcid": "0000-0001-6160-5888" }, { "id": "Upadhyay-S", "name": { "family": "Upadhyay", "given": "S." } }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "G. W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Fischer-D-A", "name": { "family": "Fischer", "given": "D. A." }, "orcid": "0000-0003-2221-0861" }, { "id": "Ford-E-B", "name": { "family": "Ford", "given": "Eric B." }, "orcid": "0000-0001-6545-639X" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" } ] }, "title": "Ten New and Updated Multiplanet Systems and a Survey of Exoplanetary Systems", "ispublished": "pub", "full_text_status": "public", "keywords": "planetary systems", "note": "\u00a9 2009 American Astronomical Society. Received 2008 August 16; accepted 2008 October 30; published 2009 March 5. The authors acknowledge and thank R. Paul Butler and Steven\nS. Vogt for their major contributions in obtaining the radial velocity measurements herein, without which this work would not have been possible. The authors also wish to acknowledge helpful discussions with many astronomers for providing and refining many of the ideas of this paper. An incomplete list would include Alan Boss, Eric Agol, Kristen Menou, James Kasting, Rory Barnes, and Ed Thommes. The work herein is based on observations obtained at the W. M. Keck Observatory, which is operated jointly by the University of California and the California Institute of Technology. The Keck Observatory was made possible by the generous financial support of the W.M. Keck Foundation. We wish to recognize and acknowledge the very significant cultural role and reverence that the summit of Mauna Kea has always had within the indigenous Hawaiian community. We are most fortunate to have the opportunity to conduct observations from this mountain. This research has made use of the SIMBAD database, operated at CDS, Strasbourg, France, and of NASA's Astrophysics Data System Bibliographic Services, and is made possible by the generous support of NASA and the NSF, including grant AST-0307493. J.T.W received support from NSF grant AST-0504874. G.W.M. received support from NASA grant NNG06AH52G, and D.A.F from NASA grant NNG05G164G and the Cottrell Science Scholar Program. E.B.F acknowledges the support of NASA RSA 1326409. J.A.J is supported by NSF grant AST-0702821. The authors acknowledge the University of Florida High-Performance Computing Center for providing computational resources and support that have contributed to the results reported in this paper.\n\nPublished - 0004-637X_693_2_1084.pdf
", "abstract": "We present the latest velocities for ten multiplanet systems, including a re-analysis of archival Keck and Lick data, resulting in improved velocities that supersede our previously published measurements. We derive updated orbital fits for 10 Lick and Keck systems, including two systems (HD 11964, HD 183263) for which we provide confirmation of second planets only tentatively identified elsewhere, and two others (HD 187123 and HD 217107) for which we provide a major revision of the outer planet's orbit. We compile orbital elements from the literature to generate a catalog of the 28 published multiple-planet systems around stars within 200 pc. From this catalog we find several intriguing patterns emerging: (1) including those systems with long-term radial velocity trends, at least 28% of known planetary systems appear to contain multiple planets; (2) planets in multiple-planet systems have somewhat smaller eccentricities than single planets; and (3) the distribution of orbital distances of planets in multiplanet systems and single planets are inconsistent: single-planet systems show a pileup at P ~ 3 days and a jump near 1 AU, while multiplanet systems show a more uniform distribution in log-period. In addition, among all planetary systems we find the following. (1) There may be an emerging, positive correlation between stellar mass and giant-planet semimajor axis. (2) Exoplanets with M sin i > 1 M_(Jup) more massive than Jupiter have eccentricities broadly distributed across 0 < e < 0.5, while lower mass exoplanets exhibit a distribution peaked near e = 0.", "date": "2009-03-10", "date_type": "published", "publication": "Astrophysical Journal", "volume": "693", "number": "2", "publisher": "American Astronomical Society", "pagerange": "1084-1099", "id_number": "CaltechAUTHORS:20130109-140554855", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20130109-140554855", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "W. M. Keck Foundation" }, { "agency": "NSF", "grant_number": "AST-0307493" }, { "agency": "NSF", "grant_number": "AST-0504874" }, { "agency": "NASA", "grant_number": "NNG06AH52G" }, { "agency": "NASA", "grant_number": "NNG05G164G" }, { "agency": "Cottrell Scholar of Research Corporation" }, { "agency": "NASA", "grant_number": "RSA 1326409" }, { "agency": "NSF", "grant_number": "AST-0702821" } ] }, "doi": "10.1088/0004-637X/693/2/1084", "primary_object": { "basename": "0004-637X_693_2_1084.pdf", "url": "https://authors.library.caltech.edu/records/xmk97-s0011/files/0004-637X_693_2_1084.pdf" }, "resource_type": "article", "pub_year": "2009", "author_list": "Wright, J. T.; Upadhyay, S.; et el." }, { "id": "https://authors.library.caltech.edu/records/4m9fm-jc672", "eprint_id": 36313, "eprint_status": "archive", "datestamp": "2023-08-21 21:00:05", "lastmod": "2023-10-20 23:00:13", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Winn-J-N", "name": { "family": "Winn", "given": "Joshua N." }, "orcid": "0000-0002-4265-047X" }, { "id": "Holman-M-J", "name": { "family": "Holman", "given": "Matthew J." }, "orcid": "0000-0002-1139-4880" }, { "id": "Henry-G-W", "name": { "family": "Henry", "given": "Gregory W." }, "orcid": "0000-0003-4155-8513" }, { "id": "Torres-G", "name": { "family": "Torres", "given": "Guillermo" }, "orcid": "0000-0002-5286-0251" }, { "id": "Fischer-D-A", "name": { "family": "Fischer", "given": "Debra" }, "orcid": "0000-0003-2221-0861" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "Geoffrey W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Shporer-A", "name": { "family": "Shporer", "given": "Avi" }, "orcid": "0000-0002-1836-3120" }, { "id": "Mazeh-T", "name": { "family": "Mazeh", "given": "Tsevi" } } ] }, "title": "The Transit Light Curve Project. X. A Christmas Transit of HD 17156b", "ispublished": "pub", "full_text_status": "public", "keywords": "planetary systems; stars: individual (HD 17156)", "note": "\u00a9 2009 American Astronomical Society. Received 2008 August 28; accepted 2008 October 24; published 2009 March 3. We are grateful to the referee, Kaspar von Braun, for a timely\nand detailed critique. This research was partly supported by\nGrant No. 2006234 from the United States\u2013Israel Binational\nScience Foundation (BSF). Partial support also came from\nNASA Origins grants NNG06GH69G (to M.J.H.) and NNG04LG89G (to G.T.). G.W.H. acknowledges support from NASA, NSF, and the State of Tennessee through its Centers of Excellence program. J.A.J. is a National Science Foundation Astronomy and Astrophysics Postdoctoral Fellow with support from the NSF grant AST-0702821. KeplerCam was developed with partial support from the Kepler Mission under NASA Cooperative\nAgreement NCC2-1390 and the Keplercam observations\ndescribed in this paper were partly supported by grants\nfrom the Kepler Mission to SAO and PSI.\n\nPublished - 0004-637X_693_1_794.pdf
", "abstract": "Photometry is presented of the 2007 December 25 transit of HD 17156b, which has the longest orbital period and highest orbital eccentricity of all the known transiting exoplanets. New measurements of the stellar radial velocity are also presented. All the data are combined and integrated with stellar-evolutionary modeling to derive refined system parameters. The planet's mass and radius are found to be 3.212^(+0.069)_(\u20130.082) M_(Jup) and 1.023^(+0.070)_(\u20130.055) R_(Jup). The corresponding stellar properties are 1.263^(+0.035)_(\u20130.047) M_\u2609 and 1.446^(+0.099)_(\u20130.067) R_\u2609. The planet is smaller by 1\u03c3 than a theoretical solar-composition gas giant with the same mass and equilibrium temperature, a possible indication of heavy-element enrichment. The midtransit time is measured to within 1 minute and shows no deviation from a linear ephemeris (and therefore no evidence for orbital perturbations from other planets). We provide ephemerides for future transits and superior conjunctions. There is an 18% chance that the orbital plane is oriented close enough to edge-on for secondary eclipses to occur at superior conjunction. Observations of secondary eclipses would reveal the thermal emission spectrum of a planet that experiences unusually large tidal heating and insolation variations.", "date": "2009-03-01", "date_type": "published", "publication": "Astrophysical Journal", "volume": "693", "number": "1", "publisher": "American Astronomical Society", "pagerange": "794-803", "id_number": "CaltechAUTHORS:20130111-090022242", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20130111-090022242", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "Binational Science Foundation (USA-Israel)", "grant_number": "2006234" }, { "agency": "NASA", "grant_number": "NNG06GH69G" }, { "agency": "NASA", "grant_number": "NNG04LG89G" }, { "agency": "State of Tennessee Centers of Excellence program" }, { "agency": "NSF Astronomy and Astrophysics Fellowship", "grant_number": "AST-0702821" }, { "agency": "NASA", "grant_number": "NNC2-1390" } ] }, "doi": "10.1088/0004-637X/693/1/794", "primary_object": { "basename": "0004-637X_693_1_794.pdf", "url": "https://authors.library.caltech.edu/records/4m9fm-jc672/files/0004-637X_693_1_794.pdf" }, "resource_type": "article", "pub_year": "2009", "author_list": "Winn, Joshua N.; Holman, Matthew J.; et el." }, { "id": "https://authors.library.caltech.edu/records/e632s-2kn57", "eprint_id": 36544, "eprint_status": "archive", "datestamp": "2023-08-21 20:50:34", "lastmod": "2023-10-20 23:16:56", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" }, { "id": "Winn-J-N", "name": { "family": "Winn", "given": "Joshua N." }, "orcid": "0000-0002-4265-047X" }, { "id": "Cabrera-N-E", "name": { "family": "Cabrera", "given": "Nicole E." } }, { "id": "Carter-J-A", "name": { "family": "Carter", "given": "Joshua A." } } ] }, "title": "A Smaller Radius for the Transiting Exoplanet WASP-10b", "ispublished": "pub", "full_text_status": "public", "keywords": "instrumentation: detectors; planetary systems; stars: individual (WASP-10); techniques: photometric", "note": "\u00a9 2009 American Astronomical Society.\n\nReceived 2008 October 22; accepted 2009 January 12; published 2009 February 3.\n\nWe gratefully acknowledge the assistance of the UH 2.2 m\ntelescope staff, including Edwin Sousa, Jon Archambeau, Dan\nBirchall, John Dvorak, and Hubert Yamada.We are particularly\ngrateful to John Tonry for his clear and comprehensive instrument documentation, and for making his previous OPTIC data available to us in preparation for our observing run. J.A.J. is an NSF Astronomy and Astrophysics Postdoctoral Fellow with support from the NSF grant AST-0702821. N.E.C.'s research was supported by the University of Hawaii Institute for Astronomy Research Experiences for Undergraduates (REU) Program, which is funded by the National Science Foundation through the grant AST-0757887. The authors wish to extend special thanks to those of Hawaiian ancestry on whose sacred mountain of Mauna Kea we are privileged to be guests. Without their generous\nhospitality, the observations presented herein would not\nhave been possible.\n\nBased on observations obtained with the University of Hawaii 2.2 m telescope operated by the Institute for Astronomy.\n\nPublished - 1538-4357_692_2_L100.pdf
Erratum - 1538-4357_692_2_L100_ERRATUM.pdf
", "abstract": "We present the photometry of WASP-10 during a transit of its short-period Jovian planet. We employed the novel point-spread function shaping capabilities of the Orthogonal Parallel Transfer Imaging Camera mounted on the UH 2.2 m telescope to achieve a photometric precision of 4.7 \u00d7 10^(\u20134) per 1.3 minute sample. With this new light curve, in conjunction with stellar evolutionary models, we improve on existing measurements of the planetary, stellar, and orbital parameters. We find a stellar radius R^* = 0.698 \u00b1 0.012 R_\u2609 and a planetary radius R_P = 1.080 \u00b1 0.020 R_Jup. The quoted errors do not include any possible systematic errors in the stellar evolutionary models. Our measurement improves the precision of the planet's radius by a factor of 4, and revises the previous estimate downward by 16% (2.5\u03c3, where \u03c3 is the quadrature sum of the respective confidence limits). Our measured radius of WASP-10b is consistent with previously published theoretical radii for irradiated Jovian planets.", "date": "2009-02-20", "date_type": "published", "publication": "Astrophysical Journal Letters", "volume": "692", "number": "2", "publisher": "American Astronomical Society", "pagerange": "L100-L104", "id_number": "CaltechAUTHORS:20130123-134806903", "issn": "2041-8205", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20130123-134806903", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NSF", "grant_number": "AST-0702821" }, { "agency": "University of Hawaii Institute for Astronomy Research Experiences for Undergraduates (REU) Program" }, { "agency": "NSF", "grant_number": "AST-0757887" } ] }, "doi": "10.1088/0004-637X/692/2/L100", "primary_object": { "basename": "1538-4357_692_2_L100.pdf", "url": "https://authors.library.caltech.edu/records/e632s-2kn57/files/1538-4357_692_2_L100.pdf" }, "related_objects": [ { "basename": "1538-4357_692_2_L100_ERRATUM.pdf", "url": "https://authors.library.caltech.edu/records/e632s-2kn57/files/1538-4357_692_2_L100_ERRATUM.pdf" } ], "resource_type": "article", "pub_year": "2009", "author_list": "Johnson, John Asher; Winn, Joshua N.; et el." }, { "id": "https://authors.library.caltech.edu/records/fwe62-4yk43", "eprint_id": 36189, "eprint_status": "archive", "datestamp": "2023-08-19 23:46:45", "lastmod": "2023-10-20 22:21:24", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" }, { "id": "Winn-J-N", "name": { "family": "Winn", "given": "Joshua N." }, "orcid": "0000-0002-4265-047X" }, { "id": "Narita-Norio", "name": { "family": "Narita", "given": "Norio" } }, { "id": "Enya-Keigo", "name": { "family": "Enya", "given": "Keigo" } }, { "id": "Williams-P-K-G", "name": { "family": "Williams", "given": "Peter K. G." }, "orcid": "0000-0003-3734-3587" }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "Geoffrey W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Sato-Bun'ei", "name": { "family": "Sato", "given": "Bun'ei" } }, { "id": "Ohta-Yasuhiro", "name": { "family": "Ohta", "given": "Yasuhiro" } }, { "id": "Taruya-Atsushi", "name": { "family": "Taruya", "given": "Atsushi" } }, { "id": "Suto-Yasushi", "name": { "family": "Suto", "given": "Yasushi" } }, { "id": "Turner-E-L", "name": { "family": "Turner", "given": "Edwin L." } }, { "id": "Bakos-G-\u00c1", "name": { "family": "Bakos", "given": "Gaspar" }, "orcid": "0000-0001-7204-6727" }, { "id": "Butler-R-P", "name": { "family": "Butler", "given": "R. Paul" } }, { "id": "Vogt-S-S", "name": { "family": "Vogt", "given": "Steven S." } }, { "id": "Aoki-Wako", "name": { "family": "Aoki", "given": "Wako" } }, { "id": "Tamura-Motohide", "name": { "family": "Tamura", "given": "Motohide" }, "orcid": "0000-0002-6510-0681" }, { "id": "Yamada-Toru", "name": { "family": "Yamada", "given": "Toru" } }, { "id": "Yoshii-Yuzuru", "name": { "family": "Yoshii", "given": "Yuzuru" } }, { "id": "Hidas-M", "name": { "family": "Hidas", "given": "Marton" } } ] }, "title": "Measurement of the Spin-Orbit Angle of Exoplanet HAT-P-1b", "ispublished": "pub", "full_text_status": "public", "note": "\u00a9 2008 American Astronomical Society. \n\nReceived 2008 April 28; accepted 2008 June 9. \n\nBased on observations obtained at the Keck Observatory, which is operated as a scientific partnership among the California Institute of Technology, the University of California, and the National Aeronautics and Space Administration; the Subaru Telescope, which is operated by the National Astronomical Observatory of Japan; and the Lick Observatory, which is operated by the University of California. \n\nWe thank the students of GWM's Ay120 Advanced Astronomy Lab course for observing and measuring the transit light curve of HAT-P-1. In particular, we acknowledge the efforts of Kimberly Aller, Niklaus Kemming, Anthony Shu, and Edward Young. We thank the UCO/Lick technical staff for the new remote observing capability, allowing the photometry to be carried out from UC Berkeley. We are grateful for support from the NASA Keck PI Data Analysis Fund (JPL 1326712). J. A. J. and G. B. are NSF Astronomy and Astrophysics Postdoctoral Fellows with support from the NSF grant AST 07-02821. We appreciate funding from NASA grant NNG 05GK92G (to G. W. M.). P. K. G. W. is supported by an NSF Graduate Research Fellowship. This research has made use of the SIMBAD database operated at CDS, Strasbourg, France, and the NASA ADS database. The authors wish to extend special thanks to those of Hawaiian ancestry on whose sacred mountain of Mauna Kea we are privileged to be guests. Without their generous hospitality, the Keck and Subaru observations presented herein would not have been possible.\n\nPublished - 0004-637X_686_1_649.pdf
", "abstract": "We present new spectroscopic and photometric observations of the HAT-P-1 planetary system. Spectra obtained during three transits exhibit the Rossiter-McLaughlin effect, allowing us to measure the angle between the sky projections of the stellar spin axis and orbit normal, \u03bb = 3.7\u00b0\u00b1 2.1\u00b0. The small value of \u03bb for this and other systems suggests that the dominant planet migration mechanism preserves spin-orbit alignment. Using two new transit light curves, we refine the transit ephemeris and reduce the uncertainty in the orbital period by an order of magnitude. We find a upper limit on the orbital eccentricity of 0.067, with 99% confidence, by combining our new radial velocity measurements with those obtained previously.", "date": "2008-10-10", "date_type": "published", "publication": "Astrophysical Journal", "volume": "686", "number": "1", "publisher": "American Astronomical Society", "pagerange": "649-657", "id_number": "CaltechAUTHORS:20130107-082050173", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20130107-082050173", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "JPL 1326712" }, { "agency": "NSF", "grant_number": "AST 07-02821" }, { "agency": "NASA", "grant_number": "NNG 05GK92G" }, { "agency": "NSF Graduate Research Fellowship" } ] }, "doi": "10.1086/591078", "primary_object": { "basename": "0004-637X_686_1_649.pdf", "url": "https://authors.library.caltech.edu/records/fwe62-4yk43/files/0004-637X_686_1_649.pdf" }, "resource_type": "article", "pub_year": "2008", "author_list": "Johnson, John Asher; Winn, Joshua N.; et el." }, { "id": "https://authors.library.caltech.edu/records/1v9x3-sdp33", "eprint_id": 96043, "eprint_status": "archive", "datestamp": "2023-08-19 23:26:36", "lastmod": "2023-10-20 20:50:12", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Cohen-J-G", "name": { "family": "Cohen", "given": "Judith G." }, "orcid": "0000-0002-8039-4673" }, { "id": "Huang-Wenjin", "name": { "family": "Huang", "given": "Wenjin" } }, { "id": "Udalski-A", "name": { "family": "Udalski", "given": "A." }, "orcid": "0000-0001-5207-5619" }, { "id": "Gould-A-P", "name": { "family": "Gould", "given": "Andrew" } }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "Jennifer A." }, "orcid": "0000-0001-9808-7172" } ] }, "title": "Clues to the Metallicity Distribution in the Galactic Bulge: Abundances in OGLE-2007-BLG-349S", "ispublished": "pub", "full_text_status": "public", "keywords": "galaxies: bulges \u2014 Galaxy: bulge \u2014 gravitational lensing \u2014 stars: abundances", "note": "\u00a9 2008 The American Astronomical Society. \n\nReceived 2008 January 21; accepted 2008 April 7. \n\nBased in part on observations obtained at the W. M. Keck Observatory, which is operated jointly by the California Institute of Technology, the University of California, and the National Aeronautics and Space Administration. \n\nWe are grateful to the many people who have worked to make the Keck Telescope and HIRES a reality and to operate and maintain\nthe Keck Observatory. The authors wish to extend special thanks to those of Hawaiian ancestry on whose sacred mountain we are privileged to be guests. Without their generous hospitality, none of the observations presented herein would have been possible. \n\nJ. G. C. and W. H. are grateful to NSF grant AST-0507219 to J. G. C. for partial support. Work by A. G. was supported by NSF grant AST-042758. The OGLE project is partially supported by the Polish MNiSW grant N20303032/4275.We thank Manuela Zoccali for providing results in advance of publication on the metallicity distribution function of bulge giants.\n\nPublished - Cohen_2008_ApJ_682_1029.pdf
Accepted Version - 0801.3264.pdf
", "abstract": "We present an abundance analysis based on high-dispersion and high signal-to-noise ratio Keck spectra of a very highly microlensed Galactic bulge dwarf, OGLE-2007-BLG-349S, with T_(eff) ~ 5400 K. The amplification at the time the spectra were taken ranged from 350 to 450. This bulge star is highly enhanced in metallicity with [Fe/H ] = + 0.51 \u00b1 0.09 dex. The abundance ratios for the 28 species of 26 elements for which features could be detected in the spectra are almost all solar. In particular, there is no evidence for enhancement of any of the \u03b1-elements, including O and Mg. We conclude that the high [Fe/H] seen in this star, when combined with the equally high [Fe/H] derived in previous detailed abundance analysis of two other Galactic bulge dwarfs, both also highly magnified by microlensing, implies that the median metallicity in the Galactic bulge is very high. We thus infer that many previous estimates of the metallicity distribution in the Galactic bulge have substantially underestimated the mean Fe metallicity there due to sample bias, and suggest a candidate mechanism for such. If our conjecture proves valid, it may be necessary to update the calibrations for the algorithms used by many groups to interpret spectra and broadband photometry of the integrated light of very metal-rich old stellar populations, including luminous elliptical galaxies.", "date": "2008-08-01", "date_type": "published", "publication": "Astrophysical Journal", "volume": "682", "number": "2", "publisher": "American Astronomical Society", "pagerange": "1029-1040", "id_number": "CaltechAUTHORS:20190603-134859287", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20190603-134859287", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NSF", "grant_number": "AST-0507219" }, { "agency": "NSF", "grant_number": "AST-042758" }, { "agency": "Ministerstwo Nauki i Szkolnictwa Wy\u017cszego (MNiSW)", "grant_number": "N20303032/4275" } ] }, "doi": "10.1086/589143", "primary_object": { "basename": "0801.3264.pdf", "url": "https://authors.library.caltech.edu/records/1v9x3-sdp33/files/0801.3264.pdf" }, "related_objects": [ { "basename": "Cohen_2008_ApJ_682_1029.pdf", "url": "https://authors.library.caltech.edu/records/1v9x3-sdp33/files/Cohen_2008_ApJ_682_1029.pdf" } ], "resource_type": "article", "pub_year": "2008", "author_list": "Cohen, Judith G.; Huang, Wenjin; et el." }, { "id": "https://authors.library.caltech.edu/records/6hk02-txr12", "eprint_id": 14221, "eprint_status": "archive", "datestamp": "2023-08-22 12:40:55", "lastmod": "2023-10-18 16:23:57", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Winn-J-N", "name": { "family": "Winn", "given": "Joshua N." }, "orcid": "0000-0002-4265-047X" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" } }, { "id": "Narita-Norio", "name": { "family": "Narita", "given": "Norio" } }, { "id": "Suto-Yasushi", "name": { "family": "Suto", "given": "Yasushi" } }, { "id": "Turner-E-L", "name": { "family": "Turner", "given": "Edwin L." } }, { "id": "Fischer-D-A", "name": { "family": "Fischer", "given": "Debra A." }, "orcid": "0000-0003-2221-0861" }, { "id": "Butler-R-P", "name": { "family": "Butler", "given": "R. Paul" } }, { "id": "Vogt-S-S", "name": { "family": "Vogt", "given": "Steven S." } }, { "id": "O'Donovan-F-T", "name": { "family": "O'Donovan", "given": "Francis T." }, "orcid": "0000-0002-4858-6106" }, { "id": "Gaudi-B-S", "name": { "family": "Gaudi", "given": "B. Scott" }, "orcid": "0000-0003-0395-9869" } ] }, "title": "The prograde orbit of exoplanet TrES-2b", "ispublished": "pub", "full_text_status": "public", "keywords": "planetary systems; planetary systems: formation; stars: individual: GSC 03549; stars: individual: GSC 02811; stars: individual: TrES-2; stars: rotation", "note": "\u00a9 2008 The American Astronomical Society.\nReceived 2008 February 22, accepted for publication 2008 April 10.\nWe thank G. Marcy for advice and encouragement, and\nD. Charbonneau for helpful conversations. We are grateful for support from the NASA Keck PI Data Analysis Fund (JPL 1326712). J. A. J. is an NSF Astronomy and Astrophysics Postdoctoral Fellow and acknowledges support from NSF grant AST 07-02821. We recognize and acknowledge the very significant cultural role and reverence that the summit of Mauna Kea has always had within the indigenous Hawaiian community.We aremost fortunate to have the opportunity to conduct observations from this mountain. Access to the Keck telescopes for this project was through the Telescope System Instrumentation Program, and was supported by AURA through the National Science Foundation under\nAURA Cooperative Agreement AST 01-32798 as amended.\n\nPublished - WINapj08.pdf
", "abstract": "We monitored the Doppler shift of the G0 V star TrES-2 throughout a transit of its giant planet. The anomalous\nDoppler shift due to stellar rotation (the Rossiter-McLaughlin effect) is discernible in the data, with a signal-to-noise ratio of 2.9, even though the star is a slow rotator. By modeling this effect we find that the planet's trajectory across the face of the star is tilted by -9\u00b0 \u00b1 12\u00b0 relative to the projected stellar equator. With 98% confidence, the orbit is prograde.", "date": "2008-08-01", "date_type": "published", "publication": "Astrophysical Journal", "volume": "682", "number": "2", "publisher": "American Astronomical Society", "pagerange": "1283-1288", "id_number": "CaltechAUTHORS:20090514-153046752", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20090514-153046752", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "1326712" }, { "agency": "NSF", "grant_number": "AST 07-02821" }, { "agency": "NSF", "grant_number": "AST 01-32798" }, { "agency": "Association of Universities for Research in Astronomy (AURA)" } ] }, "doi": "10.1086/589235", "primary_object": { "basename": "WINapj08.pdf", "url": "https://authors.library.caltech.edu/records/6hk02-txr12/files/WINapj08.pdf" }, "resource_type": "article", "pub_year": "2008", "author_list": "Winn, Joshua N.; Johnson, John Asher; et el." }, { "id": "https://authors.library.caltech.edu/records/4pw1s-5yv49", "eprint_id": 36324, "eprint_status": "archive", "datestamp": "2023-08-19 22:20:34", "lastmod": "2023-10-20 23:00:49", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Fischer-D-A", "name": { "family": "Fischer", "given": "Debra A." }, "orcid": "0000-0003-2221-0861" }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "Geoffrey W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Butler-R-P", "name": { "family": "Butler", "given": "R. Paul" } }, { "id": "Vogt-S-S", "name": { "family": "Vogt", "given": "Steven S." } }, { "id": "Laughlin-G-P", "name": { "family": "Laughlin", "given": "Greg" }, "orcid": "0000-0002-3253-2621" }, { "id": "Henry-G-W", "name": { "family": "Henry", "given": "Gregory W." }, "orcid": "0000-0003-4155-8513" }, { "id": "Abouav-D", "name": { "family": "Abouav", "given": "David" } }, { "id": "Peek-K-M-G", "name": { "family": "Peek", "given": "Kathryn M. G." } }, { "id": "Wright-J-T", "name": { "family": "Wright", "given": "Jason T." }, "orcid": "0000-0001-6160-5888" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John A." }, "orcid": "0000-0001-9808-7172" }, { "id": "McCarthy-C", "name": { "family": "McCarthy", "given": "Chris" } }, { "id": "Isaacson-H-T", "name": { "family": "Isaacson", "given": "Howard" }, "orcid": "0000-0002-0531-1073" } ] }, "title": "Five Planets Orbiting 55 Cancri", "ispublished": "pub", "full_text_status": "public", "note": "\u00a9 2008 American Astronomical Society. \n\nReceived 2007 May 8; accepted 2007 October 24. \n\nBased on observations obtained at the W. M. Keck Observatory, which is\noperated jointly by the University of California and the California Institute of\nTechnology. Keck time has been granted by both NASA and the University of\nCalifornia. \n\nWe gratefully acknowledge the efforts and dedication of the Lick and Keck Observatory staff. We thank Karl Stapelfeldt for helpful comments.We thank the anonymous referee for comments that improved the manuscript. We appreciate support by NASA grant NAG5-75005 and by NSF grant AST 03-07493 to S. S. V.; and support by NSF grant AST 99-88087, by NASA grant NAG5-12182, and travel support from the Carnegie Institution of Washington to R. P. B. G. W. H. acknowledges support from NASA grant NCC5-511 and NSF grant HRD-9706268. We are also grateful for support by Sun Microsystems. We thank the NASA and UC Telescope assignment committees for allocations of telescope time toward the planet search around M dwarfs.\nThis research has made use of the SIMBAD database, operated\nat CDS, Strasbourg, France. The authors wish to extend special thanks to those of Hawaiian ancestry on whose sacred mountain of Mauna Kea we are privileged to be guests. Without their generous hospitality, the Keck observations presented herein would not have been possible.\n\nPublished - 0004-637X_675_1_790.pdf
", "abstract": "We report 18 years of Doppler shift measurements of a nearby star, 55 Cancri, that exhibits strong evidence for five orbiting planets. The four previously reported planets are strongly confirmed here. A fifth planet is presented, with an apparent orbital period of 260 days, placing it 0.78 AU from the star in the large empty zone between two other planets. The velocity wobble amplitude of 4.9 m s^(\u22121) implies a minimum planet mass Msin i = 45.7 M_\u2295. The orbital eccentricity is consistent with a circular orbit, but modest eccentricity solutions give similar \u03c7^2_\u03bd fits. All five planets reside in low-eccentricity orbits, four having eccentricities under 0.1. The outermost planet orbits 5.8 AU from the star and has a minimum mass Msin i = 3.8 M_(Jup), making it more massive than the inner four planets combined. Its orbital distance is the largest for an exoplanet with a well-defined orbit. The innermost planet has a semimajor axis of only 0.038 AU and has a minimum mass, Msin i, of only 10.8 M_\u2295, making it one of the lowest mass exoplanets known. The five known planets within 6 AU define a minimum-mass protoplanetary nebula to compare with the classical minimum-mass solar nebula. Numerical N-body simulations show this system of five planets to be dynamically stable and show that the planets with periods of 14.65 and 44.3 days are not in a mean motion resonance. Millimagnitude photometry during 11 years reveals no brightness variations at any of the radial velocity periods, providing support for their interpretation as planetary.", "date": "2008-03-01", "date_type": "published", "publication": "Astrophysical Journal", "volume": "675", "number": "1", "publisher": "American Astronomical Society", "pagerange": "790-801", "id_number": "CaltechAUTHORS:20130111-131548446", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20130111-131548446", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-75005" }, { "agency": "NSF", "grant_number": "AST 03-07493" }, { "agency": "NSF", "grant_number": "AST 99-88087" }, { "agency": "NASA", "grant_number": "NAG5-12182" }, { "agency": "NASA", "grant_number": "NCC5-511" }, { "agency": "NSF", "grant_number": "HRD-9706268" }, { "agency": "Sun Microsystems" }, { "agency": "Carnegie Institution of Washington" } ] }, "doi": "10.1086/525512", "primary_object": { "basename": "0004-637X_675_1_790.pdf", "url": "https://authors.library.caltech.edu/records/4pw1s-5yv49/files/0004-637X_675_1_790.pdf" }, "resource_type": "article", "pub_year": "2008", "author_list": "Fischer, Debra A.; Marcy, Geoffrey W.; et el." }, { "id": "https://authors.library.caltech.edu/records/6060h-gd805", "eprint_id": 36188, "eprint_status": "archive", "datestamp": "2023-08-19 22:20:29", "lastmod": "2023-10-20 22:21:21", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "Geoffrey W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Fischer-D-A", "name": { "family": "Fischer", "given": "Debra A." }, "orcid": "0000-0003-2221-0861" }, { "id": "Wright-J-T", "name": { "family": "Wright", "given": "Jason T." }, "orcid": "0000-0001-6160-5888" }, { "id": "Reffert-S", "name": { "family": "Reffert", "given": "Sabine" } }, { "id": "Kregenow-J-M", "name": { "family": "Kregenow", "given": "Julia M." } }, { "id": "Williams-P-K-G", "name": { "family": "Williams", "given": "Peter K. G." }, "orcid": "0000-0003-3734-3587" }, { "id": "Peek-K-M-G", "name": { "family": "Peek", "given": "Kathryn M. G." } } ] }, "title": "Retired A Stars and Their Companions. II. Jovian Planets Orbiting \u03ba CrB and HD 167042", "ispublished": "pub", "full_text_status": "public", "note": "\u00a9 2008 American Astronomical Society. Received 2007 September 6; accepted 2007 November 9. We extend our gratitude to the many CAT observers who have helped with this project, including Chris McCarthy, Raj Sareen, Howard Isaacson, Joshua Goldston, Bernie Walp, and Shannon Patel.We also gratefully acknowledge the efforts and\ndedication of the Lick Observatory staff, and the time assignment committee of the University of California for their generous allocations of observing time. J. A. J. is an NSFAstronomy and Astrophysics Postdoctoral Fellow and acknowledges support from the NSF grant AST 07-02821. We appreciate funding from NASA grant NNG05GK92G (to G. W. M.). D. A. F. is a Cottrell Science Scholar of Research Corporation and acknowledges support from NASA Grant NNG05G164G that made this work possible. P. K. G.W. is supported by an NSF Graduate Research Fellowship. This research has made use of the SIMBAD database operated at CDS, Strasbourg France, and the NASA ADS database.\n\nPublished - 0004-637X_675_1_784.pdf
", "abstract": "We report precise Doppler measurements of two stars, obtained at Lick Observatory as part of our search for planets orbiting intermediate-mass subgiants. Periodic variations in the radial velocities of both stars reveal the presence of substellar orbital companions. These two stars are notably massive with stellar masses of 1.80 and 1.64 M_\u2609, respectively, indicating that they are former A-type dwarfs that have evolved off of the main sequence and are now K-type subgiants. The planet orbiting \u03ba CrB has a minimum mass M_Psin i = 1.8 M_(Jup), eccentricity e = 0.146 and a 1208 day period, corresponding to a semimajor axis a = 2.7 AU. The planet around HD 167042 has a minimum mass M_Psin i = 1.7 M_(Jup) and a 412.6 day orbit, corresponding to a semimajor axis \u03b1 = 1.3 AU. The eccentricity of HD 167042b is consistent with circular (e = 0.027 \u00b1 0.04), adding to the rare class of known exoplanets in long-period, circular orbits similar to the solar system gas giants. Like all of the planets previously discovered around evolved A stars, \u03ba CrBb and HD 167042b orbit beyond 0.8 AU.", "date": "2008-03-01", "date_type": "published", "publication": "Astrophysical Journal", "volume": "675", "number": "1", "publisher": "American Astronomical Society", "pagerange": "784-789", "id_number": "CaltechAUTHORS:20130107-075050826", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20130107-075050826", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NSF", "grant_number": "AST 07-02821" }, { "agency": "NASA", "grant_number": "NNG05GK92G" }, { "agency": "NASA", "grant_number": "NNG05G164G" }, { "agency": "NSF Graduate Research Fellowship" } ] }, "doi": "10.1086/526453", "primary_object": { "basename": "0004-637X_675_1_784.pdf", "url": "https://authors.library.caltech.edu/records/6060h-gd805/files/0004-637X_675_1_784.pdf" }, "resource_type": "article", "pub_year": "2008", "author_list": "Johnson, John Asher; Marcy, Geoffrey W.; et el." }, { "id": "https://authors.library.caltech.edu/records/dx5bw-n2e20", "eprint_id": 36282, "eprint_status": "archive", "datestamp": "2023-08-19 21:37:33", "lastmod": "2023-10-20 22:58:19", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Robinson-S-E", "name": { "family": "Robinson", "given": "Sarah E." } }, { "id": "Laughlin-G-P", "name": { "family": "Laughlin", "given": "Gregory" }, "orcid": "0000-0002-3253-2621" }, { "id": "Vogt-S-S", "name": { "family": "Vogt", "given": "Steven S." } }, { "id": "Fischer-D-A", "name": { "family": "Fischer", "given": "Debra A." }, "orcid": "0000-0003-2221-0861" }, { "id": "Butler-R-P", "name": { "family": "Butler", "given": "R. Paul" } }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "Geoffrey W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Henry-G-W", "name": { "family": "Henry", "given": "Gregory W." }, "orcid": "0000-0003-4155-8513" }, { "id": "Driscoll-P", "name": { "family": "Driscoll", "given": "Peter" } }, { "id": "Takeda-Genya", "name": { "family": "Takeda", "given": "Genya" } }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John A." }, "orcid": "0000-0001-9808-7172" } ] }, "title": "Two Jovian-Mass Planets in Earthlike Orbits", "ispublished": "pub", "full_text_status": "public", "note": "\u00a9 2007 American Astronomical Society. Received 2007 April 3; accepted 2007 July 29. \n\nBased on observations obtained at the W. M. Keck Observatory, which is\noperated by the University of California and the California Institute of Technology.\nKeck time has been granted by NOAO and NASA.\n\nS. E. R. thanks Eugenio Rivera and Peter Bodenheimer for helpful input on this work. We gratefully acknowledge the dedication and support of the Keck Observatory staff, in particular Grant Hill for support with HIRES.We thank the NASA and UC Telescope assignment committees for generous allocations of telescope\ntime. The authors extend thanks to those of Hawaiian ancestry on whose sacred mountain of Mauna Keawe are privileged to be guests. Without their kind hospitality, the Keck observations presented here would not have been possible. The authors have made use of the SIMBAD database, the Vienna Atomic Line Database, and NASA's Astrophysics Data System. This research is made possible by the generous support of Sun Microsystems, NASA, and the NSF. S. E. R. was supported by the National Science Foundation Graduate Research Fellowship. G. L. received support from the NSF Career grant (0449986). S. S.V.'s work was supported by the NSF grant AST 03-07493. D. A. F. was supported by Research Corporation's Cottrell Science Scholar program and by NASA grant NNG 05-G164G. We thank the Michelson Science Center for travel support through the KDPA program.\nFacilities: Keck:I (HIRES)\n\nPublished - 0004-637X_670_2_1391.pdf
", "abstract": "We report the discovery of two new planets: a 1.94 M_(Jup) planet in a 1.8 yr orbit of HD 5319, and a 2.51 M_(Jup) planet in a 1.1 yr orbit of HD 75898. The measured eccentricities are 0.12 for HD 5319b and 0.10 for HD 75898b, and Markov chain Monte Carlo simulations based on the derived orbital parameters indicate that the radial velocities of both stars are consistent with circular planet orbits. With low eccentricity and 1 AU < \u03b1 < 2 AU, our new planets have orbits similar to terrestrial planets in the solar system. The radial velocity residuals of both stars have significant trends, likely arising from substellar or low-mass stellar companions.", "date": "2007-12-01", "date_type": "published", "publication": "Astrophysical Journal", "volume": "670", "number": "2", "publisher": "American Astronomical Society", "pagerange": "1391-1400", "id_number": "CaltechAUTHORS:20130109-150842948", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20130109-150842948", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "Sun Microsystems" }, { "agency": "NSF Graduate Research Fellowship" }, { "agency": "NSF", "grant_number": "AST-0449986" }, { "agency": "NSF", "grant_number": "AST 03-07493" }, { "agency": "Cottrell Scholar of Research Corporation" }, { "agency": "NASA", "grant_number": "NNG 05-G164G" } ] }, "doi": "10.1086/522106", "primary_object": { "basename": "0004-637X_670_2_1391.pdf", "url": "https://authors.library.caltech.edu/records/dx5bw-n2e20/files/0004-637X_670_2_1391.pdf" }, "resource_type": "article", "pub_year": "2007", "author_list": "Robinson, Sarah E.; Laughlin, Gregory; et el." }, { "id": "https://authors.library.caltech.edu/records/ha9kt-gvp94", "eprint_id": 36185, "eprint_status": "archive", "datestamp": "2023-08-19 21:29:48", "lastmod": "2023-10-20 22:21:10", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" }, { "id": "Butler-R-P", "name": { "family": "Butler", "given": "R. Paul" } }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "Geoffrey W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Fischer-D-A", "name": { "family": "Fischer", "given": "Debra A." }, "orcid": "0000-0003-2221-0861" }, { "id": "Vogt-S-S", "name": { "family": "Vogt", "given": "Steven S." } }, { "id": "Wright-J-T", "name": { "family": "Wright", "given": "Jason T." }, "orcid": "0000-0001-6160-5888" }, { "id": "Peek-K-M-G", "name": { "family": "Peek", "given": "Kathryn M. G." } } ] }, "title": "A New Planet around an M Dwarf: Revealing a Correlation between Exoplanets and Stellar Mass", "ispublished": "pub", "full_text_status": "public", "note": "\u00a9 2007 American Astronomical Society. Received 2007 June 15; accepted 2007 July 17. \n\nBased on observations obtained at the W. M. Keck Observatory, which is\noperated jointly by the University of California and the California Institute of\nTechnology. Keck time has been granted by both NASA and the University of\nCalifornia.\n\nWe gratefully acknowledge the efforts and dedication of the Lick Observatory and Keck Observatory staff.We are also grateful to the time assignment committees of NASA, NOAO, and the\nUniversity of California for their generous allocations of observing time. We thank Ben Zuckerman for his thought-provoking conversations regarding M dwarf metallicities. We acknowledge support by NSF grants AST 07-02821 (to J.A. J.) and AST 03-07493 (to S. S. V.); AST 99-88087, NASA grant NAG5-12182, and travel support from the Carnegie Institution of Washington (to R. P. B.); and NASA grant NAG5-8299 and NSF grant AST 95-20443 (to G. W. M.). D. A. F. is a Cottrell Science Scholar of Research Corporation and acknowledges support from NASA grant NNG 05G164G, which made this work possible. This research has made use of the Simbad database operated at CDS, Strasbourg, France, and the NASA ADS database. Finally the authors wish to extend thanks to those of Hawaiian ancestry on whose sacred mountain of Mauna Kea we are privileged to be guests. Without their generous hospitality, the Keck observations presented herein would not have been possible.\n\nPublished - 0004-637X_670_1_833.pdf
", "abstract": "We report precise Doppler measurements of GJ 317 (M3.5 V) that reveal the presence of a planet with a minimum mass M_P sin i = 1.2 M_(Jup) in an eccentric, 692.9 day orbit. GJ 317 is only the third M dwarf with a Doppler-detected Jovian planet. The residuals to a single-Keplerian fit show evidence of a possible second orbital companion. The inclusion of a second Jupiter-mass planet (P \u2248 2700 days, M_P sin i = 0.83 M_(Jup)) decreases \u221aX_v^2 from 2.02 to 1.23, and reduces the rms from 12.5 to 6.32 m s^(-1). A false-alarm test yields a 1.1% probability that the curvature in the residuals of the single-planet fit is due to random fluctuations, lending additional credibility to the two-planet model. However, our data only marginally constrain a two-planet fit, and further monitoring is necessary to fully characterize the properties of the second companion. To study the effect of stellar mass on giant planet occurrence, we measure the fraction of stars with planets in three mass bins comprised of our samples of M Dwarfs, solar-mass stars, and intermediate-mass subgiants. We find a positive correlation between stellar mass and the occurrence rate of Jovian planets within 2.5 AU. Low-mass K and M stars have a 1.8% \u00b1 1.0% planet occurrence rate compared to 4.2% \u00b1 0.7% for solar-mass stars and 8.9% \u00b1 2.9% for the higher mass subgiants. This result indicates that the former F- and A-type stars with M_* \u2265 1.3 M_\u2609 in our sample are nearly 5 times more likely than the M dwarfs to harbor a giant planet. Our analysis shows that the correlation between Jovian planet occurrence and stellar mass exists even after correcting for the effects of stellar metallicity.", "date": "2007-11-20", "date_type": "published", "publication": "Astrophysical Journal", "volume": "670", "number": "1", "publisher": "American Astronomical Society", "pagerange": "833-840", "id_number": "CaltechAUTHORS:20130104-145321572", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20130104-145321572", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NSF", "grant_number": "AST 07-02821" }, { "agency": "NSF", "grant_number": "AST 03-07493" }, { "agency": "NSF", "grant_number": "AST 99-88087" }, { "agency": "NASA", "grant_number": "NAG5-12182" }, { "agency": "NASA", "grant_number": "NAG5-8299" }, { "agency": "NSF", "grant_number": "AST 95-20443" }, { "agency": "NASA", "grant_number": "NNG 05G164G" } ] }, "doi": "10.1086/521720", "primary_object": { "basename": "0004-637X_670_1_833.pdf", "url": "https://authors.library.caltech.edu/records/ha9kt-gvp94/files/0004-637X_670_1_833.pdf" }, "resource_type": "article", "pub_year": "2007", "author_list": "Johnson, John Asher; Butler, R. Paul; et el." }, { "id": "https://authors.library.caltech.edu/records/n0jrz-11c04", "eprint_id": 36280, "eprint_status": "archive", "datestamp": "2023-08-19 21:29:53", "lastmod": "2023-10-20 22:58:08", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Bakos-G-\u00c1", "name": { "family": "Bakos", "given": "G. \u00c1." }, "orcid": "0000-0001-7204-6727" }, { "id": "Kov\u00e1cs-G", "name": { "family": "Kov\u00e1cs", "given": "G." } }, { "id": "Torres-G", "name": { "family": "Torres", "given": "G." }, "orcid": "0000-0002-5286-0251" }, { "id": "Fischer-D-A", "name": { "family": "Fischer", "given": "D. A." }, "orcid": "0000-0003-2221-0861" }, { "id": "Latham-D-W", "name": { "family": "Latham", "given": "D. W." }, "orcid": "0000-0001-9911-7388" }, { "id": "Noyes-R-W", "name": { "family": "Noyes", "given": "R. W." } }, { "id": "Sasselov-D-D", "name": { "family": "Sasselov", "given": "D. D." }, "orcid": "0000-0001-7014-1771" }, { "id": "Mazeh-T", "name": { "family": "Mazeh", "given": "T." } }, { "id": "Shporer-A", "name": { "family": "Shporer", "given": "A." }, "orcid": "0000-0002-1836-3120" }, { "id": "Butler-R-P", "name": { "family": "Butler", "given": "R. P." } }, { "id": "Stefanik-R-P", "name": { "family": "Stefanik", "given": "R. P." } }, { "id": "Fern\u00e1ndez-J-M", "name": { "family": "Fern\u00e1ndez", "given": "J. M." } }, { "id": "Sozzetti-A", "name": { "family": "Sozzetti", "given": "A." } }, { "id": "P\u00e1l-A", "name": { "family": "P\u00e1l", "given": "A." } }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "J." }, "orcid": "0000-0001-9808-7172" }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "G. W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Winn-J-N", "name": { "family": "Winn", "given": "J. N." }, "orcid": "0000-0002-4265-047X" }, { "id": "Sip\u0151cz-B", "name": { "family": "Sip\u0151cz", "given": "B." } }, { "id": "L\u00e1z\u00e1r-J", "name": { "family": "L\u00e1z\u00e1r", "given": "J." } }, { "id": "Papp-I", "name": { "family": "Papp", "given": "I." } }, { "id": "S\u00e1ri-P", "name": { "family": "S\u00e1ri", "given": "P." } } ] }, "title": "HD 147506b: A Supermassive Planet in an Eccentric Orbit Transiting a Bright Star", "ispublished": "pub", "full_text_status": "public", "note": "\u00a9 2007 American Astronomical Society. Received 2007 April 29; accepted 2007 July 20. \nSome of the data presented herein were obtained at the W. M. Keck Observatory,\nwhich is operated as a scientific partnership among the California Institute\nof Technology, the University of California, and the National Aeronautics and\nSpace Administration. The Observatory was made possible by the generous financial\nsupport of the W.M. Keck Foundation. The authors wish to recognize and\nacknowledge the very significant cultural role and reverence that the summit of\nMauna Kea has always had within the indigenous Hawaiian community. We are\nmost fortunate to have the opportunity to conduct observations fromthismountain.\nKeck time has been in part granted by NASA.\nOperation of the HATNet project is funded in part by NASA grant NNG04GN74G. Work by G.\u00c1.B. was supported by NASA through Hubble Fellowship Grant HST-HF-01170.01-A. G. K. wishes to offer thanks for support from the Hungarian Scientific Research Foundation (OTKA) grant K-60750.We acknowledge partial support from the Kepler Mission under NASA Cooperative Agreement NCC2-1390 ( PI: D.W. L.). G. T. acknowledges partial support from NASA Origins grant NNG04LG89G. T. M. thanks the Israel Science Foundation for a support through grant 03/233. D.A. F. is a Cottrell Science Scholar of Research Corporation and acknowledges support from NASA grant NNG05G164G. We would like to thank Joel Hartman (CfA), Gil Esquerdo (CfA),\nand Ron Dantowitz and Marek Kozubal (Clay Center) for their\nefforts to observe HAT-P-2b in transit, and Howard Isaacson (San Francisco State University) for obtaining spectra at Lick Observatory. We wish to thank Amit Moran for his help in the observations with the Wise HAT telescope. We owe special thanks to the directors and staff of FLWO, SMA, and the Wise Observatory for supporting the operation of HATNet and WHAT. We would also like to thank the anonymous referee for the useful suggestions that improved this paper.\n\nPublished - 0004-637X_670_1_826.pdf
", "abstract": "We report the discovery of a massive (M_p = 9.04 \u00b1 0.50 M_J) planet transiting the bright (V = 8.7) F8 star HD 147506, with an orbital period of 5.63341 \u00b1 0.00013 days and an eccentricity of e = 0.520 \u00b1 0.010. From the transit light curve we determine that the radius of the planet is R_p = 0.982^(+0.038)_(-0.105) R_J. HD 147506b (also coined HAT-P-2b) has a mass about 9 times the average mass of previously known transiting exoplanets and a density of \u03c1p \u2248 12 g cm^(-3), greater than that of rocky planets like the Earth. Its mass and radius are marginally consistent with theories of structure of massive giant planets composed of pure H and He, and accounting for them may require a large (\u2273100 M_\u2295) core. The high eccentricity causes a ninefold variation of insolation of the planet between peri- and apastron. Using follow-up photometry, we find that the center of transit is T_(mid) = 2,454,212.8559 \u00b1 0.0007 (HJD) and the transit duration is 0.177 \u00b1 0.002 days.", "date": "2007-11-20", "date_type": "published", "publication": "Astrophysical Journal", "volume": "670", "number": "1", "publisher": "American Astronomical Society", "pagerange": "826-832", "id_number": "CaltechAUTHORS:20130109-142201592", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20130109-142201592", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNG04GN74G" }, { "agency": "NASA Hubble Fellowship", "grant_number": "HST-HF-01170.01-A" }, { "agency": "Hungarian Scientific Research Foundation (OTKA)", "grant_number": "K-60750" }, { "agency": "NASA", "grant_number": "NCC2-1390" }, { "agency": "NASA", "grant_number": "NNG04LG89G" }, { "agency": "Israel Science Foundation", "grant_number": "03/233" }, { "agency": "NASA", "grant_number": "NNG05G164G" } ] }, "doi": "10.1086/521866", "primary_object": { "basename": "0004-637X_670_1_826.pdf", "url": "https://authors.library.caltech.edu/records/n0jrz-11c04/files/0004-637X_670_1_826.pdf" }, "resource_type": "article", "pub_year": "2007", "author_list": "Bakos, G. \u00c1.; Kov\u00e1cs, G.; et el." }, { "id": "https://authors.library.caltech.edu/records/tcp2b-fg372", "eprint_id": 36262, "eprint_status": "archive", "datestamp": "2023-08-19 21:27:10", "lastmod": "2023-10-20 22:56:34", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Fischer-D-A", "name": { "family": "Fischer", "given": "Debra A." }, "orcid": "0000-0003-2221-0861" }, { "id": "Vogt-S-S", "name": { "family": "Vogt", "given": "Steven S." } }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "Geoffrey W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Butler-R-P", "name": { "family": "Butler", "given": "R. Paul" } }, { "id": "Sato-Bun'ei", "name": { "family": "Sato", "given": "Bun'ei" } }, { "id": "Henry-G-W", "name": { "family": "Henry", "given": "Gregory W." }, "orcid": "0000-0003-4155-8513" }, { "id": "Robinson-S-E", "name": { "family": "Robinson", "given": "Sarah" } }, { "id": "Laughlin-G-P", "name": { "family": "Laughlin", "given": "Gregory" }, "orcid": "0000-0002-3253-2621" }, { "id": "Ida-Shigeru", "name": { "family": "Ida", "given": "Shigeru" } }, { "id": "Toyota-Eri", "name": { "family": "Toyota", "given": "Eri" } }, { "id": "Omiya-Masashi", "name": { "family": "Omiya", "given": "Masashi" } }, { "id": "Driscoll-P", "name": { "family": "Driscoll", "given": "Peter" } }, { "id": "Takeda-Genya", "name": { "family": "Takeda", "given": "Genya" } }, { "id": "Wright-J-T", "name": { "family": "Wright", "given": "Jason T." }, "orcid": "0000-0001-6160-5888" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John A." }, "orcid": "0000-0001-9808-7172" } ] }, "title": "Five Intermediate-Period Planets from the N2K Sample", "ispublished": "pub", "full_text_status": "public", "note": "\u00a9 2007 American Astronomical Society. Received 2007 March 31; accepted 2007 April 9. \nBased on observations obtained at the W. M. Keck Observatory, which is\noperated by the University of California and the California Institute of Technology.\nKeck time has been granted by NOAO and NASA.\n\nBased on observations obtained at the Subaru Telescope, which is operated\nby the National Astronomical Observatory of Japan.\n\nWe gratefully acknowledge the dedication and support of the Keck Observatory staff, in particular Grant Hill for support with HIRES. We thank Akito Tajitsu and Tae-Soo Pyo for their expertise and support of the Subaru Hawaii Deep Survey observations.\nD. A. F. acknowledges support from NASA grant NNG05G164G\nand from Research Corporation. S. S. V. acknowledges support\nfrom NSFAST-0307493. B. S. is supported by Grants-in-Aid for\nScientific Research (grant 17740106) from the Japan Society for the Promotion of Science (JSPS). We thank the Michelson Science Center for travel support through the KPDA program. We thank the NASA and UC Telescope assignment committees for\ngenerous allocations of telescope time. The authors extend thanks to those of Hawaiian ancestry on whose sacred mountain of Mauna Kea we are privileged to be guests. Without their kind hospitality, the Keck observations presented here would not have been possible. This research has made use of the SIMBAD database, operated at CDS, Strasbourg, France, and of NASA's Astrophysics Data System Bibliographic Services and ismade possible by the generous support of Sun Microsystems, NASA, and the NSF.\n\nPublished - 0004-637X_669_2_1336.pdf
", "abstract": "We report the detection of five Jovian-mass planets orbiting high-metallicity stars. Four of these stars were first observed as part of the N2K program, and exhibited low rms velocity scatter after three consecutive observations. However, follow-up observations over the last 3 years now reveal the presence of longer period planets with orbital periods ranging from 21 days to a few years. HD 11506 is a G0 V star with a planet of M sin i = 4.74 M_(Jup) in a 3.85 yr orbit. HD 17156 is a G0 V star with a 3.12 M_(Jup) planet in a 21.2 day orbit. The eccentricity of this orbit is 0.67, one of the highest known for a planet with a relatively short period. The orbital period for this planet places it in a region of parameter space where relatively few planets have been detected. HD 125612 is a G3 V star with a planet of M sin i = 3.5 M_(Jup) in a 1.4 yr orbit. HD 170469 is a G5 IV star with a planet of M sin i = 0.67 M_(Jup) in a 3.13 year orbit. HD 231701 is an F8 V star with planet of 1.08 M_(Jup) in a 142 day orbit. All of these stars have supersolar metallicity. Three of the five stars were observed photometrically, but showed no evidence of brightness variability. A transit search conducted for HD 17156 was negative, but covered only 25% of the search space, and so is not conclusive.", "date": "2007-11-10", "date_type": "published", "publication": "Astrophysical Journal", "volume": "669", "number": "2", "publisher": "American Astronomical Society", "pagerange": "1336-1344", "id_number": "CaltechAUTHORS:20130109-091436236", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20130109-091436236", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNG05G164G" }, { "agency": "Research Corporation" }, { "agency": "NSF", "grant_number": "AST-0307493" }, { "agency": "Japan Society for the Promotion of Science (JSPS)", "grant_number": "17740106" }, { "agency": "Sun Microsystems" } ] }, "doi": "10.1086/521869", "primary_object": { "basename": "0004-637X_669_2_1336.pdf", "url": "https://authors.library.caltech.edu/records/tcp2b-fg372/files/0004-637X_669_2_1336.pdf" }, "resource_type": "article", "pub_year": "2007", "author_list": "Fischer, Debra A.; Vogt, Steven S.; et el." }, { "id": "https://authors.library.caltech.edu/records/72my3-n9w82", "eprint_id": 37323, "eprint_status": "archive", "datestamp": "2023-08-22 10:08:44", "lastmod": "2023-10-23 17:22:13", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Winn-J-N", "name": { "family": "Winn", "given": "Joshua N." }, "orcid": "0000-0002-4265-047X" }, { "id": "Holman-M-J", "name": { "family": "Holman", "given": "Matthew J." }, "orcid": "0000-0002-1139-4880" }, { "id": "Bakos-G-\u00c1", "name": { "family": "Bakos", "given": "Gaspar \u00c1." }, "orcid": "0000-0001-7204-6727" }, { "id": "P\u00e1l-A", "name": { "family": "P\u00e1l", "given": "Andr\u00e1s" } }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" }, { "id": "Williams-P-K-G", "name": { "family": "Williams", "given": "Peter K. G." }, "orcid": "0000-0003-3734-3587" }, { "id": "Shporer-A", "name": { "family": "Shporer", "given": "Avi" }, "orcid": "0000-0002-1836-3120" }, { "id": "Mazeh-T", "name": { "family": "Mazeh", "given": "Tsevi" } }, { "id": "Fernandez-J", "name": { "family": "Fernandez", "given": "Jos\u00e9" } }, { "id": "Latham-D-W", "name": { "family": "Latham", "given": "David W." }, "orcid": "0000-0001-9911-7388" }, { "id": "Gillon-M", "name": { "family": "Gillon", "given": "Michael" }, "orcid": "0000-0003-1462-7739" } ] }, "title": "The Transit Light Curve Project. VII. The Not-So-Bloated Exoplanet HAT-P-1b", "ispublished": "pub", "full_text_status": "public", "keywords": "planetary systems; stars: individual (HAT-P-1, ADS 16402B)", "note": "\u00a9 2007 American Astronomical Society. Received 2007 June 13; accepted 2007 July 12. We thank Debra Fischer and Geoff Marcy for helpful discussions and John Southworth for his publicly available code for finding limb-darkening parameters. A. P. is grateful for the hospitality of the Harvard-Smithsonian Center for Astrophysics, where some of this work was carried out. M. J. H. acknowledges support for this work from NASA Origins grant NG06GH69G. G. \u00c1. B. was supported by NASA through Hubble Fellowship Grant HST-HF-01170.01. P. K. G.W. was supported by an NSF Graduate Student Research Fellowship. KeplerCam was\ndeveloped with partial support from the Kepler Mission under\nNASA Cooperative Agreement NCC2-1390 (PI:D. Latham), and\nthe KeplerCam observations described in this paper were partly supported by grants from the Kepler Mission to SAO and PSI.\n\nPublished - 1538-3881_134_4_1707.pdf
Erratum - 1538-3881_136_4_1753.pdf
", "abstract": "We present photometry of the G0 star HAT-P-1 during six transits of its close-in giant planet, and we refine the estimates of the system parameters. Relative to Jupiter's properties, HAT-P-1b is 1.20 \u00b1 0.05 times larger, and its surface gravity is 2.7 \u00b1 0.2 times weaker. Although it remains the case that HAT-P-1b is among the least dense of the known sample of transiting exoplanets, its properties are in accord with previously published models of strongly irradiated, coreless, solar-composition giant planets. The times of the transits have a typical accuracy of 1 minute and do not depart significantly from a constant period.", "date": "2007-10", "date_type": "published", "publication": "Astronomical Journal", "volume": "134", "number": "4", "publisher": "American Astronomical Society", "pagerange": "1707-1712", "id_number": "CaltechAUTHORS:20130305-151436960", "issn": "0004-6256", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20130305-151436960", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NG06GH69G" }, { "agency": "NASA Hubble Fellowship", "grant_number": "HST-HF-01170.01-A" }, { "agency": "NSF Graduate Research Fellowship" }, { "agency": "NASA", "grant_number": "NCC2-1390" } ] }, "doi": "10.1086/521599", "primary_object": { "basename": "1538-3881_134_4_1707.pdf", "url": "https://authors.library.caltech.edu/records/72my3-n9w82/files/1538-3881_134_4_1707.pdf" }, "related_objects": [ { "basename": "1538-3881_136_4_1753.pdf", "url": "https://authors.library.caltech.edu/records/72my3-n9w82/files/1538-3881_136_4_1753.pdf" } ], "resource_type": "article", "pub_year": "2007", "author_list": "Winn, Joshua N.; Holman, Matthew J.; et el." }, { "id": "https://authors.library.caltech.edu/records/qtw3b-6jw87", "eprint_id": 37438, "eprint_status": "archive", "datestamp": "2023-08-22 09:46:58", "lastmod": "2023-10-23 17:28:07", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Winn-J-N", "name": { "family": "Winn", "given": "Joshua N." }, "orcid": "0000-0002-4265-047X" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" }, { "id": "Peek-K-M-G", "name": { "family": "Peek", "given": "Kathryn M. G." } }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "Geoffrey W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Bakos-G-\u00c1", "name": { "family": "Bakos", "given": "Gaspar \u00c1." }, "orcid": "0000-0001-7204-6727" }, { "id": "Enya-Keigo", "name": { "family": "Enya", "given": "Keigo" } }, { "id": "Narita-Norio", "name": { "family": "Narita", "given": "Norio" } }, { "id": "Suto-Yasushi", "name": { "family": "Suto", "given": "Yasushi" } }, { "id": "Turner-E-L", "name": { "family": "Turner", "given": "Edwin L." } }, { "id": "Vogt-S-S", "name": { "family": "Vogt", "given": "Steven S." } } ] }, "title": "Spin-Orbit Alignment for the Eccentric Exoplanet HD 147506b", "ispublished": "pub", "full_text_status": "public", "keywords": "planetary systems; planetary systems: formation; stars: individual (HD 147506, HAT-P-2); stars: rotation", "note": "\u00a9 2007 American Astronomical Society. Received 2007 June 11; accepted 2007 July 5; published 2007 August 6. \n\nData presented herein were obtained at the W.M. Keck Observatory, which\nis operated as a scientific partnership among the California Institute of Technology,\nthe University of California, and the National Aeronautics and Space\nAdministration, and was made possible by the generous financial support of\nthe W. M. Keck Foundation.\n\nWe thank D. Fabrycky and S. Gaudi for helpful comments on the manuscript. We are very grateful to Michael Bolte, Jennifer Johnson, and David Lai for swapping Keck nights on short notice. G. \u00c1. B. was supported by NASA through a Hubble Fellowship Grant HST-HF-01170.01. We recognize and acknowledge the very significant cultural role and reverence\nthat the summit of Mauna Kea has always had within the indigenous Hawaiian community. We are most fortunate to have\nthe opportunity to conduct observations from this mountain.\n\nPublished - 1538-4357_665_2_L167.pdf
", "abstract": "The short-period exoplanet HD 147506b (also known as HAT-P-2b) has an eccentric orbit, raising the possibility that it migrated through planet-planet scattering or Kozai oscillations accompanied by tidal dissipation. Either of these scenarios could have significantly tilted the orbit relative to the host star's equatorial plane. Here we present spectroscopy of a transit of HD 147506b and assess the spin-orbit alignment via the Rossiter-McLaughlin effect. We find the angle between the sky projections of the stellar spin axis and orbital axis to be aligned within 14\u00b0. Thus, we find no corroborating evidence for scattering or Kozai migration, although these scenarios cannot be ruled out with the present data.", "date": "2007-08-20", "date_type": "published", "publication": "Astrophysical Journal Letters", "volume": "665", "number": "2", "publisher": "American Astronomical Society", "pagerange": "L167-L170", "id_number": "CaltechAUTHORS:20130311-105950864", "issn": "2041-8205", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20130311-105950864", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA Hubble Fellowship", "grant_number": "HST-HF-01170.01-A" } ] }, "doi": "10.1086/521362", "primary_object": { "basename": "1538-4357_665_2_L167.pdf", "url": "https://authors.library.caltech.edu/records/qtw3b-6jw87/files/1538-4357_665_2_L167.pdf" }, "resource_type": "article", "pub_year": "2007", "author_list": "Winn, Joshua N.; Johnson, John Asher; et el." }, { "id": "https://authors.library.caltech.edu/records/yc573-87p66", "eprint_id": 36264, "eprint_status": "archive", "datestamp": "2023-08-19 20:45:10", "lastmod": "2023-10-20 22:56:44", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Patel-S-G", "name": { "family": "Patel", "given": "Shannon G." } }, { "id": "Vogt-S-S", "name": { "family": "Vogt", "given": "Steven S." } }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "Geoffrey W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John A." }, "orcid": "0000-0001-9808-7172" }, { "id": "Fischer-D-A", "name": { "family": "Fischer", "given": "Debra A." }, "orcid": "0000-0003-2221-0861" }, { "id": "Wright-J-T", "name": { "family": "Wright", "given": "Jason T." }, "orcid": "0000-0001-6160-5888" }, { "id": "Butler-R-P", "name": { "family": "Butler", "given": "R. Paul" } } ] }, "title": "Fourteen New Companions from the Keck and Lick Radial Velocity Survey Including Five Brown Dwarf Candidates", "ispublished": "pub", "full_text_status": "public", "note": "\u00a9 2007 American Astronomical Society. Received 2007 February 21; accepted 2007 April 23. \nBased on observations obtained at the W. M. Keck Observatory, which is\noperated as a scientific partnership among the California Institute of Technology,\nthe University of California, and the National Aeronautics and Space Administration.\nThe Observatory wa smade possible by the generous financial support of the\nW. M. Keck Foundation.\nThe authors wish to acknowledge the collective efforts of those involved with the CCPS, including that of the staffs of both Keck and Lick Observatories. S. G. P. thanks John Garrett and Stephen\nEikenberry for their instruction and encouragement in pursuing a career in science. S. S. V. acknowledges support from NSF grant AST-0307493. We are appreciative of the UCO/Lick-Keck TAC for the opportunity given to conduct this research. This research has made use of the SIMBAD database, operated at CDS, Strasbourg, France. The authors wish to recognize and acknowledge the very significant cultural role and reverence that the summit of Mauna\nKea has always had within the indigenous Hawaiian community.\nWe are most fortunate to have the opportunity to conduct observations from this mountain.\n\nPublished - 0004-637X_665_1_744.pdf
", "abstract": "We present radial velocities for 14 stars on the California and Carnegie Planet Search target list that reveal new companions. One star, HD 167665, was fit with a definitive Keplerian orbit leading to a minimum mass for the companion of 50.3 M_(Jup) at a separation from its host of ~5.5 AU. Incomplete or limited phase coverage for the remaining 13 stars prevents us from assigning to them unique orbital parameters. Instead, we fit their radial velocities with Keplerian orbits across a grid of fixed values for M sin i and period P, and use the resulting \u03c7^2_v surface to place constraints on M sin i, P, and semimajor axis \u0251. This technique allowed us to restrict M sin i below the brown dwarf-stellar mass boundary for an additional four companions (HD 150554, HD 8765, HD 72780, HD 74014). If the combined five companions are confirmed as brown dwarfs, these results would comprise the first major catch of such objects from our survey beyond ~3 AU.", "date": "2007-08-10", "date_type": "published", "publication": "Astrophysical Journal", "volume": "665", "number": "1", "publisher": "American Astronomical Society", "pagerange": "744-753", "id_number": "CaltechAUTHORS:20130109-092842416", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20130109-092842416", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NSF", "grant_number": "AST-0307493" } ] }, "doi": "10.1086/519066", "primary_object": { "basename": "0004-637X_665_1_744.pdf", "url": "https://authors.library.caltech.edu/records/yc573-87p66/files/0004-637X_665_1_744.pdf" }, "resource_type": "article", "pub_year": "2007", "author_list": "Patel, Shannon G.; Vogt, Steven S.; et el." }, { "id": "https://authors.library.caltech.edu/records/4jw4n-asc84", "eprint_id": 36183, "eprint_status": "archive", "datestamp": "2023-08-19 20:45:04", "lastmod": "2023-10-20 22:21:03", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" }, { "id": "Fischer-D-A", "name": { "family": "Fischer", "given": "Debra A." }, "orcid": "0000-0003-2221-0861" }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "Geoffrey W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Wright-J-T", "name": { "family": "Wright", "given": "Jason T." }, "orcid": "0000-0001-6160-5888" }, { "id": "Driscoll-P", "name": { "family": "Driscoll", "given": "Peter" } }, { "id": "Butler-R-P", "name": { "family": "Butler", "given": "R. Paul" } }, { "id": "Hekker-S", "name": { "family": "Hekker", "given": "Saskia" }, "orcid": "0000-0002-1463-726X" }, { "id": "Reffert-S", "name": { "family": "Reffert", "given": "Sabine" } }, { "id": "Vogt-S-S", "name": { "family": "Vogt", "given": "Steven S." } } ] }, "title": "Retired A Stars and Their Companions: Exoplanets Orbiting Three Intermediate-Mass Subgiants", "ispublished": "pub", "full_text_status": "public", "note": "\u00a9 2007 American Astronomical Society. Received 2007 February 13; accepted 2007 May 8. \nBased on observations obtained at the Lick Observatory, which is operated\nby the University of California, and W.M. Keck Observatory, which is operated\njointly by the University of California and the California Institute of Technology.\n\nWe extend our gratitude to the many CAT observers who have helped with this project, including Howard Isaacson, Julia Kregenow, Karin Sandstrom, Bernie Walp, Peter Williams, Katie Peek, and Shannon Patel. Special thanks to Herv\u00e9 Bouy and Francisco Ramos-Stierle for lending a portion of their 3 m observing time to observe HD 192699 before it set in 2006. We thank Michael Fitzgerald and Marshall Perrin for their useful\ndiscussions, and Tim Robishaw for sharing his data display expertise and IDL plotting routines. We also gratefully acknowledge the efforts and dedication of the Lick Observatory and Keck Observatory staff, and the time assignment committees of NASA, NOAO, and University of California for their generous allocations of observing time. We appreciate funding from NASA grant NNG05GK92G (to G. W. M.), and the NSF for its grant AST 03-07493 (to S. S. V.) for supporting this research. D. A. F. is a Cottrell Science Scholar of Research Corporation and acknowledges\nsupport from NASA Grant NNG05G164G that made this work possible. This research has made use of the Simbad\ndatabase operated at CDS, Strasbourg France, and the NASA\nADS database. The authors wish to extend special thanks to those of Hawaiian ancestry on whose sacred mountain of Mauna Kea we are privileged to be guests. Without their generous hospitality, the Keck observations presented herein would not have been possible.\n\nPublished - 0004-637X_665_1_785.pdf
", "abstract": "We report precision Doppler measurements of three intermediate-mass subgiants obtained at Lick and Keck Observatories. All three stars show variability in their radial velocities consistent with planet-mass companions in Keplerian orbits. We find a planet with a minimum mass M_P sin i = 2.5 M_J in a 351.5 day orbit around HD 192699, a planet with a minimum mass of 2.0 M_J in a 341.1 day orbit around HD 210702, and a planet with a minimum mass of 0.61 M_J in a 297.3 day orbit around HD 175541. Mass estimates from stellar interior models indicate that all three stars were formerly A-type, main-sequence dwarfs with masses ranging from 1.65 to 1.85 M_\u2609. These three long-period planets would not have been detectable during their stars' main-sequence phases due to the large rotational velocities and stellar jitter exhibited by early-type dwarfs. There are now nine \"retired\" (evolved) A-type stars (M_* > 1.6 M_\u2609) with known planets. All nine planets orbit at distances \u0251 \u2265 0.78 AU, which is significantly different from the semimajor axis distribution of planets around lower mass stars.", "date": "2007-08-10", "date_type": "published", "publication": "Astrophysical Journal", "volume": "665", "number": "1", "publisher": "American Astronomical Society", "pagerange": "785-793", "id_number": "CaltechAUTHORS:20130104-143619750", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20130104-143619750", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNG05GK92G" }, { "agency": "NSF", "grant_number": "AST 03-07493" }, { "agency": "NASA", "grant_number": "NNG05G164G" } ] }, "doi": "10.1086/519677", "primary_object": { "basename": "0004-637X_665_1_785.pdf", "url": "https://authors.library.caltech.edu/records/4jw4n-asc84/files/0004-637X_665_1_785.pdf" }, "resource_type": "article", "pub_year": "2007", "author_list": "Johnson, John Asher; Fischer, Debra A.; et el." }, { "id": "https://authors.library.caltech.edu/records/v22qf-zzt10", "eprint_id": 37324, "eprint_status": "archive", "datestamp": "2023-08-22 08:48:11", "lastmod": "2023-10-23 17:22:16", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Winn-J-N", "name": { "family": "Winn", "given": "Joshua N." }, "orcid": "0000-0002-4265-047X" }, { "id": "Holman-M-J", "name": { "family": "Holman", "given": "Matthew J." }, "orcid": "0000-0002-1139-4880" }, { "id": "Henry-G-W", "name": { "family": "Henry", "given": "Gregory W." }, "orcid": "0000-0003-4155-8513" }, { "id": "Roussanova-A", "name": { "family": "Roussanova", "given": "Anna" } }, { "id": "Enya-Keigo", "name": { "family": "Enya", "given": "Keigo" } }, { "id": "Yoshii-Yuzuru", "name": { "family": "Yoshii", "given": "Yuzuru" } }, { "id": "Shporer-A", "name": { "family": "Shporer", "given": "Avi" }, "orcid": "0000-0002-1836-3120" }, { "id": "Mazeh-T", "name": { "family": "Mazeh", "given": "Tsevi" } }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" }, { "id": "Narita-Norio", "name": { "family": "Narita", "given": "Norio" } }, { "id": "Suto-Yasushi", "name": { "family": "Suto", "given": "Yasushi" } } ] }, "title": "The Transit Light Curve Project. V. System Parameters and Stellar Rotation Period of HD 189733", "ispublished": "pub", "full_text_status": "public", "keywords": "planetary systems; planetary systems: formation; stars: individual (HD 189733); stars: rotation", "note": "\u00a9 2007 American Astronomical Society. Received 2006 December 6; accepted 2006 December 28. We thank F. Pont and M. Gillon for helpful discussions about correlated noise.We are grateful to G. Marcy, P. Butler, S. Vogt, and E. Turner for their help with the Doppler analysis and for encouragement.\nA. R. thanks the MIT Undergraduate Research Opportunities\nProgram office for research funding.\n\nPublished - 1538-3881_133_4_1828.pdf
", "abstract": "We present photometry of HD 189733 during eight transits of its close-in giant planet, and out-of-transit photometry spanning 2 yr. Using the transit photometry, we determine the stellar and planetary radii and the photometric ephemeris. Outside of transits, there are quasi-periodic flux variations with a 13.4 day period that we attribute to stellar rotation. In combination with previous results, we derive upper limits on the orbital eccentricity and on the true angle between the stellar rotation axis and planetary orbit (as opposed to the angle between the projections of those axes on the sky).", "date": "2007-04", "date_type": "published", "publication": "Astronomical Journal", "volume": "133", "number": "4", "publisher": "American Astronomical Society", "pagerange": "1828-1835", "id_number": "CaltechAUTHORS:20130305-151518559", "issn": "0004-6256", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20130305-151518559", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "Massachusetts Institute of Technology (MIT)" } ] }, "doi": "10.1086/512159", "primary_object": { "basename": "1538-3881_133_4_1828.pdf", "url": "https://authors.library.caltech.edu/records/v22qf-zzt10/files/1538-3881_133_4_1828.pdf" }, "resource_type": "article", "pub_year": "2007", "author_list": "Winn, Joshua N.; Holman, Matthew J.; et el." }, { "id": "https://authors.library.caltech.edu/records/39rq4-1g173", "eprint_id": 36325, "eprint_status": "archive", "datestamp": "2023-08-19 19:49:25", "lastmod": "2023-10-20 23:00:52", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Wright-J-T", "name": { "family": "Wright", "given": "J. T." }, "orcid": "0000-0001-6160-5888" }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "G. W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Fischer-D-A", "name": { "family": "Fischer", "given": "D. A." }, "orcid": "0000-0003-2221-0861" }, { "id": "Butler-R-P", "name": { "family": "Butler", "given": "R. P." } }, { "id": "Vogt-S-S", "name": { "family": "Vogt", "given": "S. S." } }, { "id": "Tinney-C-G", "name": { "family": "Tinney", "given": "C. G." }, "orcid": "0000-0002-7595-0970" }, { "id": "Jones-H-R-A", "name": { "family": "Jones", "given": "H. R. A." } }, { "id": "Carter-B-D", "name": { "family": "Carter", "given": "B. D." } }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "J. A." }, "orcid": "0000-0001-9808-7172" }, { "id": "McCarthy-C", "name": { "family": "McCarthy", "given": "C." } }, { "id": "Apps-K", "name": { "family": "Apps", "given": "K." } } ] }, "title": "Four New Exoplanets and Hints of Additional Substellar Companions to Exoplanet Host Stars", "ispublished": "pub", "full_text_status": "public", "note": "\u00a9 2007 American Astronomical Society. Received 2006 July 26; accepted 2006 October 28. \n\nBased on observations obtained at the W. M. Keck Observatory, which is\noperated as a scientific partnership among the California Institute of Technology,\nthe University of California, and the National Aeronautics and Space Administration.\nThe Observatory was made possible by the generous financial support of\nthe W.M. Keck Foundation. The authors wish to recognize and acknowledge the\nvery significant cultural role and reverence that the summit of Mauna Kea has\nalways had within the indigenous Hawaiian community. We are most fortunate to\nhave the opportunity to conduct observations from this mountain.\n\nThe authors would like to thank Kathryn Peek for obtaining the crucial 2006 April 16 RV measurement of HIP 14810, and Simon O'Toole and Alan Penny for their assistance. The authors also thank the anonymous referee for a thorough and constructive report. This research has made use of the SIMBAD database, operated at CDS, Strasbourg, France, and of NASA's Astrophysics Data System Bibliographic Services, and is made possible by the generous support of Sun Microsystems, NASA, and the National Science Foundation.\n\nPublished - 0004-637X_657_1_533.pdf
", "abstract": "We present four new exoplanets: HIP 14810b and HIP 14810c, HD 154345b, and HD 187123c. The two planets orbiting HIP 14810, from the N2K project, have masses of 3.9 and 0.76 M_J. We have searched the radial velocity time series of 90 known exoplanet systems and found new residual trends due to additional, long period companions. Two stars known to host one exoplanet have sufficient curvature in the residuals to a one planet fit to constrain the minimum mass of the outer companion to be substellar: HD 68988c with 8 M_J < m sin i < 20 M_J and HD 187123c with 3 M_J < m sin i < 7 M_J, both with P > 8 yr. We have also searched the velocity residuals of known exoplanet systems for prospective low-amplitude exoplanets and present some candidates. We discuss techniques for constraining the mass and period of exoplanets in such cases, and for quantifying the significance of weak RV signals. We also present two substellar companions with incomplete orbits and periods longer than 8 yr: HD 24040b and HD 154345b with m sin i < 20 M_J and m sin i < 10 M_J, respectively.", "date": "2007-03-01", "date_type": "published", "publication": "Astrophysical Journal", "volume": "657", "number": "1", "publisher": "American Astronomical Society", "pagerange": "533-545", "id_number": "CaltechAUTHORS:20130111-133043875", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20130111-133043875", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "Sun Microsystems" }, { "agency": "NASA" }, { "agency": "NSF" } ] }, "doi": "10.1086/510553", "primary_object": { "basename": "0004-637X_657_1_533.pdf", "url": "https://authors.library.caltech.edu/records/39rq4-1g173/files/0004-637X_657_1_533.pdf" }, "resource_type": "article", "pub_year": "2007", "author_list": "Wright, J. T.; Marcy, G. W.; et el." }, { "id": "https://authors.library.caltech.edu/records/a2bv6-van72", "eprint_id": 36327, "eprint_status": "archive", "datestamp": "2023-08-19 19:39:37", "lastmod": "2023-10-20 23:00:56", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Bakos-G-\u00c1", "name": { "family": "Bakos", "given": "G. \u00c1." }, "orcid": "0000-0001-7204-6727" }, { "id": "Noyes-R-W", "name": { "family": "Noyes", "given": "R. W." } }, { "id": "Kov\u00e1cs-G", "name": { "family": "Kov\u00e1cs", "given": "G." } }, { "id": "Latham-D-W", "name": { "family": "Latham", "given": "D. W." }, "orcid": "0000-0001-9911-7388" }, { "id": "Sasselov-D-D", "name": { "family": "Sasselov", "given": "D. D." }, "orcid": "0000-0001-7014-1771" }, { "id": "Torres-G", "name": { "family": "Torres", "given": "G." }, "orcid": "0000-0002-5286-0251" }, { "id": "Fischer-D-A", "name": { "family": "Fischer", "given": "D. A." }, "orcid": "0000-0003-2221-0861" }, { "id": "Stefanik-R-P", "name": { "family": "Stefanik", "given": "R. P." } }, { "id": "Sato-Bun'ei", "name": { "family": "Sato", "given": "B." } }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "J. A." }, "orcid": "0000-0001-9808-7172" }, { "id": "P\u00e1l-A", "name": { "family": "P\u00e1l", "given": "A." } }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "G. W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Butler-R-P", "name": { "family": "Butler", "given": "R. P." } }, { "id": "Esquerdo-G-A", "name": { "family": "Esquerdo", "given": "G. A." }, "orcid": "0000-0002-9789-5474" }, { "id": "Stanek-K-Z", "name": { "family": "Stanek", "given": "K. Z." } }, { "id": "L\u00e1z\u00e1r-J", "name": { "family": "L\u00e1z\u00e1r", "given": "J." } }, { "id": "Papp-I", "name": { "family": "Papp", "given": "I." } }, { "id": "S\u00e1ri-P", "name": { "family": "S\u00e1ri", "given": "P." } }, { "id": "Sip\u0151cz-B", "name": { "family": "Sip\u0151cz", "given": "B." } } ] }, "title": "HAT-P-1b: A Large-Radius, Low-Density Exoplanet Transiting One Member of a Stellar Binary", "ispublished": "pub", "full_text_status": "public", "note": "\u00a9 2007 American Astronomical Society. Received 2006 August 12; accepted 2006 September 21. \nBased in part on data collected at the Subaru Telescope, which is operated\nby the National Astronomical Observatory of Japan.\nBased in part on observations obtained at the W. M. Keck Observatory,\nwhich is operated by the University of California and the California Institute of\nTechnology. Keck time has been granted by NASA.\n\nOperation of the HATNet project is funded in part by NASA grant NNG04GN74G. Support for program number HST-HF-01170.01-A to G.\u00c1.B. was provided by NASA through a Hubble Fellowship grant from the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Incorporated, under NASA contract NAS5-26555. G. K. wishes to thank support from Hungarian Scientific Research\nFoundation (OTKA) grant K-60750. We acknowledge partial support from the Kepler Mission under NASA Cooperative\nAgreement NCC2-1390 (D. W. L., Principal Investigator).\nG. T. acknowledges partial support from NASA Origins grant\nNNG04LG89G. We thank Akito Tajitsu for his expertise and support of the Subaru HDS observations. We thank graduate students M. Ohmiya, S. Robinson, and K. Peek for help collecting data at Subaru and Keck. The Keck Observatory was made possible by the generous financial support of the W. M. Keck Foundation. D. A. F is a Cottrell Science Scholar of Research Corporation. We acknowledge support from NASA grant NNG05G164G to D. A. F. We would like to thank Carl Akerlof and the decommissioned ROTSE-I project for the generous loan of some of the lenses and CCDs that we use for operating HATNet. We owe special thanks to Emilio Falco, Dan Fabricant, James Moran, and Antony Schinckel for their help in establishing and operating the\nHATNet stations at FLWO and SMA. G. \u00c1. B. wishes to thank\nthe support given by telescope operators Mike Calkins and Perry Berlind in the operation of the FLWO HATNet station. We also thank Gergely G\u00e1lfi for useful discussions. This publication made use of the VizieR interactive catalog (Ochsenbein et al. 2000) at CDS, Strasbourg, and the 2MASS catalog.\n\nPublished - 0004-637X_656_1_552.pdf
", "abstract": "Using small automated telescopes in Arizona and Hawaii, the HATNet project has detected an object transiting one member of the double star system ADS 16402. This system is a pair of G0 main-sequence stars with age about 3 Gyr at a distance of ~139 pc and projected separation of ~1550 AU. The transit signal has a period of 4.46529 days and depth of 0.015 mag. From follow-up photometry and spectroscopy, we find that the object is a \"hot Jupiter\" planet with mass about 0.53M_J and radius ~1.36R_J traveling in an orbit with semimajor axis 0.055 AU and inclination about 85.9\u00b0, thus transiting the star at impact parameter 0.74 of the stellar radius. Based on a data set spanning 3 yr, ephemerides for the transit center are T_C = 2453984.397 + N_(tr) \u00d7 4.46529. The planet, designated HAT-P-1b, appears to be at least as large in radius, and smaller in mean density, than any previously known planet.", "date": "2007-02-10", "date_type": "published", "publication": "Astrophysical Journal", "volume": "656", "number": "1", "publisher": "American Astronomical Society", "pagerange": "552-559", "id_number": "CaltechAUTHORS:20130111-134333718", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20130111-134333718", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNG04GN74G" }, { "agency": "NASA Hubble Fellowship", "grant_number": "HST-HF-01170.01-A" }, { "agency": "NASA", "grant_number": "NAS5-26555" }, { "agency": "Hungarian Scientific Research Foundation (OTKA)", "grant_number": "K-60750" }, { "agency": "NASA", "grant_number": "NCC2-1390" }, { "agency": "NASA", "grant_number": "NNG04LG89G" }, { "agency": "W. M. Keck Foundation" }, { "agency": "NASA", "grant_number": "NNG05G164G" } ] }, "doi": "10.1086/509874", "primary_object": { "basename": "0004-637X_656_1_552.pdf", "url": "https://authors.library.caltech.edu/records/a2bv6-van72/files/0004-637X_656_1_552.pdf" }, "resource_type": "article", "pub_year": "2007", "author_list": "Bakos, G. \u00c1.; Noyes, R. W.; et el." }, { "id": "https://authors.library.caltech.edu/records/pak6e-wb339", "eprint_id": 36506, "eprint_status": "archive", "datestamp": "2023-08-22 07:49:23", "lastmod": "2023-10-20 23:14:55", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Winn-J-N", "name": { "family": "Winn", "given": "Joshua N." }, "orcid": "0000-0002-4265-047X" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "Geoffrey W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Butler-R-P", "name": { "family": "Butler", "given": "R. Paul" } }, { "id": "Vogt-S-S", "name": { "family": "Vogt", "given": "Steven S." } }, { "id": "Henry-G-W", "name": { "family": "Henry", "given": "Gregory W." }, "orcid": "0000-0003-4155-8513" }, { "id": "Roussanova-A", "name": { "family": "Roussanova", "given": "Anna" } }, { "id": "Holman-M-J", "name": { "family": "Holman", "given": "Matthew J." }, "orcid": "0000-0002-1139-4880" }, { "id": "Enya-Keigo", "name": { "family": "Enya", "given": "Keigo" } }, { "id": "Narita-Norio", "name": { "family": "Narita", "given": "Norio" } }, { "id": "Suto-Yasushi", "name": { "family": "Suto", "given": "Yasushi" } }, { "id": "Turner-E-L", "name": { "family": "Turner", "given": "Edwin L." } } ] }, "title": "Measurement of the Spin-Orbit Alignment in the Exoplanetary System HD 189733", "ispublished": "pub", "full_text_status": "public", "keywords": "planetary systems; planetary systems: formation; stars: individual (HD 189733); stars: rotation", "note": "\u00a9 2006 American Astronomical Society.\n\nReceived 2006 September 15; accepted 2006 November 1; published 2006 November 30.\nData presented herein were obtained at the W. M. Keck Observatory, which\nis operated as a scientific partnership among the California Institute of Technology,\nthe University of California, and NASA, and was made possible by the\ngenerous financial support of the W. M. Keck Foundation.\nWe thank Debra Fischer for running SME on our spectra and\nScott Gaudi for very helpful discussions. We recognize and acknowledge the very significant cultural role and reverence that the summit of Mauna Kea has always had within the indigenous Hawaiian community. We are most fortunate to have the opportunity to conduct observations from this mountain.\n\nPublished - 1538-4357_653_1_L69.pdf
", "abstract": "We present spectroscopy of a transit of the exoplanet HD 189733b. By modeling the Rossiter-McLaughlin effect (the anomalous Doppler shift due to the partial eclipse of the rotating stellar surface), we find the angle between the sky projections of the stellar spin axis and orbit normal to be \u03bb = -1\u00b0.4 \u00b1 1\u00b0.1. This is the third case of a \"hot Jupiter\" for which \u03bb has been measured. In all three cases \u03bb is small, ruling out random orientations with 99.96% confidence, and suggesting that the inward migration of hot Jupiters generally preserves spin-orbit alignment.", "date": "2006-12-10", "date_type": "published", "publication": "Astrophysical Journal", "volume": "653", "number": "1", "publisher": "American Astronomical Society", "pagerange": "L69-L72", "id_number": "CaltechAUTHORS:20130122-104241039", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20130122-104241039", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "doi": "10.1086/510528", "primary_object": { "basename": "1538-4357_653_1_L69.pdf", "url": "https://authors.library.caltech.edu/records/pak6e-wb339/files/1538-4357_653_1_L69.pdf" }, "resource_type": "article", "pub_year": "2006", "author_list": "Winn, Joshua N.; Johnson, John Asher; et el." }, { "id": "https://authors.library.caltech.edu/records/vx5sm-zdh23", "eprint_id": 36182, "eprint_status": "archive", "datestamp": "2023-08-19 19:02:32", "lastmod": "2023-10-20 22:20:59", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "Geoffrey W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Fischer-D-A", "name": { "family": "Fischer", "given": "Debra A." }, "orcid": "0000-0003-2221-0861" }, { "id": "Henry-G-W", "name": { "family": "Henry", "given": "Gregory W." }, "orcid": "0000-0003-4155-8513" }, { "id": "Wright-J-T", "name": { "family": "Wright", "given": "Jason T." }, "orcid": "0000-0001-6160-5888" }, { "id": "Isaacson-H-T", "name": { "family": "Isaacson", "given": "Howard" }, "orcid": "0000-0002-0531-1073" }, { "id": "McCarthy-C", "name": { "family": "McCarthy", "given": "Chris" } } ] }, "title": "An Eccentric Hot Jupiter Orbiting the Subgiant HD 185269", "ispublished": "pub", "full_text_status": "public", "note": "\u00a9 2006 American Astronomical Society. \n\nReceived 2006 July 4; accepted 2006 August 3. \n\nWe extend our gratitude to the many CATobservers who have helped with this project, including Shannon Patel, Julia Kregenow, Karin Sandstrom, Katie Peek and Bernie Walp. Special thanks to Conor Laver and Franck Marchis for lending a portion of their 3 m time to observe this star before it set in 2005. We also gratefully acknowledge the efforts and dedication of the Lick\nObservatory staff. We appreciate funding from NASA grant\nNNG05GK92G (to G.W.M.) for supporting this research. D. A. F. is a Cottrell Science Scholar of Research Corporation and acknowledges support from NASA grant NNG05G164G that\nmade this work possible. G.W. H. acknowledges support from\nNASA grant NCC5-511 and NSF grant HRD-9706268.\n\nPublished - 0004-637X_652_2_1724.pdf
", "abstract": "We report the detection of a Jupiter-mass planet in a 6.838 day orbit around the 1.28 M_\u2609 subgiant HD 185269. The eccentricity of HD 185269b (e = 0.30) is unusually large compared to other planets within 0.1 AU of their stars. Photometric observations demonstrate that the star is constant to \u00b10.0001 mag on the radial velocity period, strengthening our interpretation of a planetary companion. This planet was detected as part of our radial velocity survey of evolved stars located on the subgiant branch of the H-R diagram\u2014also known as the Hertzsprung gap. These stars, which have masses between 1.2 and 2.5 M_\u2609, play an important role in the investigation of the frequency of extrasolar planets as a function of stellar mass.", "date": "2006-12-01", "date_type": "published", "publication": "Astrophysical Journal", "volume": "652", "number": "2", "publisher": "American Astronomical Society", "pagerange": "1724-1728", "id_number": "CaltechAUTHORS:20130104-141035863", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20130104-141035863", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNG05GK92G" }, { "agency": "NASA", "grant_number": "NNG05G164G" }, { "agency": "NASA", "grant_number": "NCC5-511" }, { "agency": "NSF", "grant_number": "HRD-9706268" } ] }, "doi": "10.1086/508255", "primary_object": { "basename": "0004-637X_652_2_1724.pdf", "url": "https://authors.library.caltech.edu/records/vx5sm-zdh23/files/0004-637X_652_2_1724.pdf" }, "resource_type": "article", "pub_year": "2006", "author_list": "Johnson, John Asher; Marcy, Geoffrey W.; et el." }, { "id": "https://authors.library.caltech.edu/records/225rn-qad47", "eprint_id": 36693, "eprint_status": "archive", "datestamp": "2023-08-19 18:58:54", "lastmod": "2023-10-20 23:30:12", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Butler-R-P", "name": { "family": "Butler", "given": "R. Paul" } }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "Geoffrey W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Wright-J-T", "name": { "family": "Wright", "given": "Jason T." }, "orcid": "0000-0001-6160-5888" }, { "id": "Vogt-S-S", "name": { "family": "Vogt", "given": "Steven S." } }, { "id": "Fischer-D-A", "name": { "family": "Fischer", "given": "Debra A." }, "orcid": "0000-0003-2221-0861" } ] }, "title": "A Long\u2010Period Jupiter\u2010Mass Planet Orbiting the Nearby M Dwarf GJ 849", "ispublished": "pub", "full_text_status": "public", "note": "\u00a9 2006 The Astronomical Society of the Pacific.\n\nReceived 2006 September 14; accepted 2006 October 30; published 2006 November 22.\n\nWe acknowledge support by NSF grant AST 99\u201088087 and NASA grant NAG5\u201012182, and travel support from the Carnegie Institution of Washington (to R. P. B.), NASA grant NAG5\u20108299 and NSF grant AST 95\u201020443 (to G. W. M.), and NSF grant AST 03\u201007493 (to S. S. V.). We thank NASA and the University of California for their allocations of Keck telescope time. This research has made use of the SIMBAD database operated at CDS, Strasbourg, France, and the Smithsonian/NASA Astrophysics Data System database. Finally, the authors wish to extend thanks to those of Hawaiian ancestry on whose sacred mountain of Mauna Kea we are privileged to be guests. Without their generous hospitality, the Keck observations presented herein would not have been possible.\n\nBased on observations obtained at the W. M. Keck Observatory, which\nis operated jointly by the University of California and the California Institute\nof Technology. Keck time has been granted by both NASA and the University\nof California.\n\nPublished - 510500.pdf
", "abstract": "We report precise Doppler measurements of GJ 849 (M3.5 V) that reveal the presence of a planet with a minimum mass of 0.82M_Jup in a 5.16 yr orbit. At AU, GJ 849b is the first Doppler\u2010detected planet discovered around an M dwarf orbiting beyond 0.21 AU, and is only the second Jupiter\u2010mass planet discovered around a star less massive than 0.5 M_\u2299. This detection brings to four the number of M stars known to harbor planets. Based on the results of our survey of 1300 FGKM main\u2010sequence stars we find that giant planets within 2.5 AU are \u223c3 times more common around GK stars than around M stars. Due to GJ 849's proximity of 8.8 pc, the planet's angular separation is 0.27 , making this system a prime target for high\u2010resolution imaging using adaptive optics and future space\u2010borne missions such as the Space Interferometry Mission PlanetQuest. We also find evidence of a linear trend in the velocity time series, which may be indicative of an additional planetary companion.", "date": "2006-12", "date_type": "published", "publication": "Publications of the Astronomical Society of the Pacific", "volume": "118", "number": "850", "publisher": "Astronomical Society of the Pacific", "pagerange": "1685-1689", "id_number": "CaltechAUTHORS:20130130-134341801", "issn": "0004-6280", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20130130-134341801", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NSF", "grant_number": "AST 99-88087" }, { "agency": "NASA", "grant_number": "NAG5-12182" }, { "agency": "Carnegie Institution of Washington" }, { "agency": "NASA", "grant_number": "NAG5-8299" }, { "agency": "NSF", "grant_number": "AST 95-20443" }, { "agency": "NSF", "grant_number": "AST 03-07493" } ] }, "doi": "10.1086/510500", "primary_object": { "basename": "510500.pdf", "url": "https://authors.library.caltech.edu/records/225rn-qad47/files/510500.pdf" }, "resource_type": "article", "pub_year": "2006", "author_list": "Butler, R. Paul; Johnson, John Asher; et el." }, { "id": "https://authors.library.caltech.edu/records/gzcd3-kbq47", "eprint_id": 36181, "eprint_status": "archive", "datestamp": "2023-08-19 18:25:46", "lastmod": "2023-10-20 22:20:56", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "Geoffrey W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Fischer-D-A", "name": { "family": "Fischer", "given": "Debra A." }, "orcid": "0000-0003-2221-0861" }, { "id": "Laughlin-G-P", "name": { "family": "Laughlin", "given": "Gregory" }, "orcid": "0000-0002-3253-2621" }, { "id": "Butler-R-P", "name": { "family": "Butler", "given": "R. Paul" } }, { "id": "Henry-G-W", "name": { "family": "Henry", "given": "Gregory W." }, "orcid": "0000-0003-4155-8513" }, { "id": "Valenti-J-A", "name": { "family": "Valenti", "given": "Jeff A." }, "orcid": "0000-0003-3305-6281" }, { "id": "Ford-E-B", "name": { "family": "Ford", "given": "Eric B." }, "orcid": "0000-0001-6545-639X" }, { "id": "Vogt-S-S", "name": { "family": "Vogt", "given": "Steven S." } }, { "id": "Wright-J-T", "name": { "family": "Wright", "given": "Jason T." }, "orcid": "0000-0001-6160-5888" } ] }, "title": "The N2K Consortium. VI. Doppler Shifts without Templates and Three New Short-Period Planets", "ispublished": "pub", "full_text_status": "public", "note": "\u00a9 2006 American Astronomical Society. Received 2006 February 21; accepted 2006 April 14. We would like to thank Ansgar Reiners for his constructive comments and suggestions on our spectral morphing technique. Thanks to Tim Robishaw for lending his expertise in data presentation,\nand for his many useful IDL Postscript and plotting routines. We gratefully acknowledge the efforts and dedication of the Keck Observatory staff. We thank the NOAO and NASA telescope assignment committees for generous allocations of telescope time. We appreciate funding from NASA grant NNG05GK92G (to G. W. M.) for supporting this research. D. A. F. is a Cottrell Science Scholar of the Research Corporation and acknowledges support from NASA grant NNG05G164G that made this work possible. We also thank NSF for its grants AST-0307493 and AST-9988358 (to S. S. V.). G.W. H. acknowledges support from NASA grant NCC5-511 and NSF grant HRD 97-06268. The authors wish to extend special thanks to those of Hawaiian ancestry on whose sacred mountain of Mauna Kea we are privileged\nto be guests.Without their generous hospitality, the Keck\nobservations presented herein would not have been possible.\n\nPublished - 0004-637X_647_1_600.pdf
", "abstract": "We present a modification to the iodine cell Doppler technique that eliminates the need for an observed stellar template spectrum. For a given target star, we iterate toward a synthetic template spectrum beginning with an existing template of a similar star. We then perturb the shape of this first-guess template to match the program observation of the target star taken through an iodine cell. The elimination of a separate template observation saves valuable telescope time, a feature that is ideally suited for the quick-look strategy employed by the \"Next 2000 Stars\" (N2K) planet search program. Tests using Keck HIRES (High Resolution Echelle Spectrometer) spectra indicate that synthetic templates yield a short-term precision of 3 m s^(-1) and a long-term, run-to-run precision of 5 m s^(-1). We used this new Doppler technique to discover three new planets: a 1.50M_J planet in a 2.1375 day orbit around HD 86081; a 0.71M_J planet in circular, 26.73 day orbit around HD 224693; and a Saturn-mass planet in an 18.179 day orbit around HD 33283. The remarkably short period of HD 86081b bridges the gap between the extremely short period planets detected in the Optical Gravitational Lensing Experiment (OGLE) survey and the 16 Doppler-detected hot Jupiters (P < 15 days), which have an orbital period distribution that piles up at about 3 days. We have acquired photometric observations of two of the planetary host stars with the automated photometric telescopes at Fairborn Observatory. HD 86081 and HD 224693 both lack detectable brightness variability on their radial velocity periods, supporting planetary-reflex motion as the cause of the radial velocity variability. HD 86081 shows no evidence of planetary transits in spite of a 17.6% transit probability. We have too few photometric observations to detect or rule out transits for HD 224693.", "date": "2006-08-10", "date_type": "published", "publication": "Astrophysical Journal", "volume": "647", "number": "1", "publisher": "American Astronomical Society", "pagerange": "600-611", "id_number": "CaltechAUTHORS:20130104-135449158", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20130104-135449158", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNG05GK92G" }, { "agency": "NASA", "grant_number": "NNG05G164G" }, { "agency": "NSF", "grant_number": "AST-0307493" }, { "agency": "NSF", "grant_number": "AST-9988358" }, { "agency": "NASA", "grant_number": "NCC5-511" }, { "agency": "NSF", "grant_number": "HRD 97-06268" } ] }, "doi": "10.1086/505173", "primary_object": { "basename": "0004-637X_647_1_600.pdf", "url": "https://authors.library.caltech.edu/records/gzcd3-kbq47/files/0004-637X_647_1_600.pdf" }, "resource_type": "article", "pub_year": "2006", "author_list": "Johnson, John Asher; Marcy, Geoffrey W.; et el." }, { "id": "https://authors.library.caltech.edu/records/wmna2-2dq74", "eprint_id": 36328, "eprint_status": "archive", "datestamp": "2023-08-19 18:19:06", "lastmod": "2023-10-20 23:00:59", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Butler-R-P", "name": { "family": "Butler", "given": "R. P." } }, { "id": "Wright-J-T", "name": { "family": "Wright", "given": "J. T." }, "orcid": "0000-0001-6160-5888" }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "G. W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Fischer-D-A", "name": { "family": "Fischer", "given": "D. A." }, "orcid": "0000-0003-2221-0861" }, { "id": "Vogt-S-S", "name": { "family": "Vogt", "given": "S. S." } }, { "id": "Tinney-C-G", "name": { "family": "Tinney", "given": "C. G." }, "orcid": "0000-0002-7595-0970" }, { "id": "Jones-H-R-A", "name": { "family": "Jones", "given": "H. R. A." } }, { "id": "Carter-B-D", "name": { "family": "Carter", "given": "B. D." } }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "J. A." }, "orcid": "0000-0001-9808-7172" }, { "id": "McCarthy-C", "name": { "family": "McCarthy", "given": "C." } }, { "id": "Penny-A-J", "name": { "family": "Penny", "given": "A. J." } } ] }, "title": "Catalog of Nearby Exoplanets", "ispublished": "pub", "full_text_status": "public", "note": "\u00a9 2006 American Astronomical Society. Received 2005 November 5; accepted 2006 March 10. \nBased on observations obtained at the W. M. Keck Observatory, which is\noperated jointly by the University of California and the California Institute of\nTechnology. The Keck Observatory was made possible by the generous financial\nsupport of the W. M. Keck Foundation.\n\nThe authors wish to thank the many observers over many years who helped gather the data herein at telescopes around the world, aswell as the many collaborators who helped reduce, analyze, and\ninterpret this inestimable data set, including Jeff Valenti, Bernie Walp, Andrew Cumming, Eugenio Rivera,Greg Laughlin, Sabine Frink, Tony Misch, Grant Hill, David Nidever, Eric Nielsen, Amy Reines, Joe Barranco, Bob Noyes, Eric Williams, Preet Dosanjh, Mike Eiklenborg, Mario Savio, Heather Hauser, and Barbara Schaefer. The authors are also grateful for the careful attention Kevin Apps has given this paper and our planet searches. The authors wish to recognize and acknowledge the very significant cultural role and reverence that the summit of Mauna Kea has always had within the indigenous Hawaiian community. We are most fortunate to have the opportunity to conduct observations\nfrom this mountain. This research has made use of the SIMBAD database, operated at CDS, Strasbourg, France, and of NASA's Astrophysics Data System Bibliographic Services and is made possible by the generous support of Sun Microsystems, NASA, and the NSF.\n\nPublished - 0004-637X_646_1_505.pdf
", "abstract": "We present a catalog of nearby exoplanets. It contains the 172 known low-mass companions with orbits established through radial velocity and transit measurements around stars within 200 pc. We include five previously unpublished exoplanets orbiting the stars HD 11964, HD 66428, HD 99109, HD 107148, and HD 164922. We update orbits for 83 additional exoplanets, including many whose orbits have not been revised since their announcement, and include radial velocity time series from the Lick, Keck, and Anglo-Australian Observatory planet searches. Both these new and previously published velocities are more precise here due to improvements in our data reduction pipeline, which we applied to archival spectra. We present a brief summary of the global properties of the known exoplanets, including their distributions of orbital semimajor axis, minimum mass, and orbital eccentricity.", "date": "2006-07-20", "date_type": "published", "publication": "Astrophysical Journal", "volume": "646", "number": "1", "publisher": "American Astronomical Society", "pagerange": "505-522", "id_number": "CaltechAUTHORS:20130111-140651735", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20130111-140651735", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "Sun Microsystems" }, { "agency": "NASA" }, { "agency": "NSF" } ] }, "doi": "10.1086/504701", "primary_object": { "basename": "0004-637X_646_1_505.pdf", "url": "https://authors.library.caltech.edu/records/wmna2-2dq74/files/0004-637X_646_1_505.pdf" }, "resource_type": "article", "pub_year": "2006", "author_list": "Butler, R. P.; Wright, J. T.; et el." }, { "id": "https://authors.library.caltech.edu/records/k4srv-nxg24", "eprint_id": 36283, "eprint_status": "archive", "datestamp": "2023-08-19 18:01:10", "lastmod": "2023-10-20 22:58:22", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Winn-J-N", "name": { "family": "Winn", "given": "Joshua N." }, "orcid": "0000-0002-4265-047X" }, { "id": "Hamilton-C-M", "name": { "family": "Hamilton", "given": "Catrina M." } }, { "id": "Herbst-W-J", "name": { "family": "Herbst", "given": "William J." } }, { "id": "Hoffman-J-L", "name": { "family": "Hoffman", "given": "Jennifer L." } }, { "id": "Holman-M-J", "name": { "family": "Holman", "given": "Matthew J." }, "orcid": "0000-0002-1139-4880" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John A." }, "orcid": "0000-0001-9808-7172" }, { "id": "Kuchner-M-J", "name": { "family": "Kuchner", "given": "Marc J." }, "orcid": "0000-0002-2387-5489" } ] }, "title": "The Orbit and Occultations of KH 15D", "ispublished": "pub", "full_text_status": "public", "note": "\u00a9 2006 American Astronomical Society. Received 2005 December 30; accepted 2006 February 15. We are grateful to V. Grinin and O. Yu. Barsunova for providing their optical data, and to M. Tamura for providing his group's near-infrared data. We thank J. Barranco, E. Ford, S. Gaudi, S. Kenyon, R. Narayan, and G. Rybicki for helpful discussions. S. Gaudi, V. Grinin, and the anonymous referee provided constructive criticism of the manuscript.\n\nPublished - 0004-637X_644_1_510.pdf
", "abstract": "The unusual flux variations of the pre-main-sequence binary star KH 15D have been attributed to occultations by a circumbinary disk. We test whether or not this theory is compatible with newly available data, including recent radial velocity measurements, CCD photometry over the past decade, and photographic photometry over the past 50 years. We find the model to be successful, after two refinements: a more realistic motion of the occulting feature and a halo around each star that probably represents scattering by the disk. The occulting feature is exceptionally sharp edged, raising the possibility that the dust in the disk has settled into a thin layer and providing a tool for fine-scale mapping of the immediate environment of a T Tauri star. However, the window of opportunity is closing, as the currently visible star may be hidden at all orbital phases by as early as 2008.", "date": "2006-06-10", "date_type": "published", "publication": "Astrophysical Journal", "volume": "644", "number": "1", "publisher": "American Astronomical Society", "pagerange": "510-524", "id_number": "CaltechAUTHORS:20130109-152442449", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20130109-152442449", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "doi": "10.1086/503417", "primary_object": { "basename": "0004-637X_644_1_510.pdf", "url": "https://authors.library.caltech.edu/records/k4srv-nxg24/files/0004-637X_644_1_510.pdf" }, "resource_type": "article", "pub_year": "2006", "author_list": "Winn, Joshua N.; Hamilton, Catrina M.; et el." }, { "id": "https://authors.library.caltech.edu/records/vamjp-g6h92", "eprint_id": 37024, "eprint_status": "archive", "datestamp": "2023-08-22 05:48:57", "lastmod": "2023-10-23 16:03:33", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "J." }, "orcid": "0000-0001-9808-7172" }, { "id": "Grotzinger-J-P", "name": { "family": "Grotzinger", "given": "J. P." }, "orcid": "0000-0001-9324-1257" } ] }, "title": "Affect of Sedimentation on Stromatolite Reef Growth and\n Morphology, Ediacaran Omkyk Member (Nama Group), Namibia", "ispublished": "pub", "full_text_status": "restricted", "note": "\u00a9 2006 Geological Society of South Africa. Editorial handling: J. Gutzmer. Thanks to David Fike, Abdullah Al-Habsy, Rashid Al-Hinai, Issa Al-Mazroui, Hamad Al-Shuaily, Aus Al-Tawil, and Erwin Adams for help and good times in the field. Thanks to Marianne and Rob Field for enthusiastically allowing work on Zebra River farm. Logistical support was provided by the Geological Survey of Namibia. This work was supported by National Science Foundation Grants EAR-9904298 and EAR-0001018, and Petroleum\nDevelopment Oman. We appreciate thoughtful reviews by K.H. Hofman and N.J. Beukes.", "abstract": "Superbly preserved reefs of Ediacaran age in Namibia give clues to environmental controls on stromatolite-thrombolite growth morphology and nucleation. Digital mapping and Measured stratigraphic sections reveal parasequences featuring meter-scale alternation of shallow marine shale and stromatolitic-thrombolitic microbialites associated with other clastic carbonates (grainstones, mudstones). Stromatolite-thrombolite column width, spacing and height vary systematically with the type of sediment being deposited, with growth inhibited during shale deposition. Columns are generally wider and more closely spaced during carbonate sediment deposition and narrower and more widely spaced during shale deposition. While stromatolite growth should be sensitive to sediment type explicitly, we also interpret sediment type as a general proxy for changing environmental conditions (e.g. water depth, turbidity) that may directly affect reef growth. A simple rule-based numerical simulation of microbialite growth is formulated based on the field interpretations of sedimentological and topographic growth controls. The model cannot explain detailed morphologic attributes, but can recreate correlations between stromatolite column widths, column spacing and layer bed thickness as a function of sediment type.", "date": "2006-06", "date_type": "published", "publication": "South African Journal of Geology", "volume": "109", "number": "1-2", "publisher": "Geological Society of South Africa", "pagerange": "87-96", "id_number": "CaltechAUTHORS:20130220-135224362", "issn": "1012-0750", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20130220-135224362", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NSF", "grant_number": "EAR-9904298" }, { "agency": "NSF", "grant_number": "EAR-0001018" }, { "agency": "Petroleum Development Oman" } ] }, "local_group": { "items": [ { "id": "Division-of-Geological-and-Planetary-Sciences" } ] }, "doi": "10.2113/gssajg.109.1-2.87", "resource_type": "article", "pub_year": "2006", "author_list": "Johnson, J. and Grotzinger, J. P." }, { "id": "https://authors.library.caltech.edu/records/qy2qm-jeb92", "eprint_id": 36284, "eprint_status": "archive", "datestamp": "2023-08-22 05:08:05", "lastmod": "2024-02-02 21:05:59", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Fischer-D-A", "name": { "family": "Fischer", "given": "Debra A." }, "orcid": "0000-0003-2221-0861" }, { "id": "Laughlin-G-P", "name": { "family": "Laughlin", "given": "Gregory" }, "orcid": "0000-0002-3253-2621" }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "Geoffrey W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Butler-R-P", "name": { "family": "Butler", "given": "R. Paul" } }, { "id": "Vogt-S-S", "name": { "family": "Vogt", "given": "Steven S." } }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John A." }, "orcid": "0000-0001-9808-7172" }, { "id": "Henry-G-W", "name": { "family": "Henry", "given": "Gregory W." }, "orcid": "0000-0003-4155-8513" }, { "id": "McCarthy-C", "name": { "family": "McCarthy", "given": "Chris" } }, { "id": "Ammons-M", "name": { "family": "Ammons", "given": "Mark" } }, { "id": "Robinson-S", "name": { "family": "Robinson", "given": "Sarah" } }, { "id": "Strader-J", "name": { "family": "Strader", "given": "Jay" }, "orcid": "0000-0002-1468-9668" }, { "id": "Valenti-J-A", "name": { "family": "Valenti", "given": "Jeff A." }, "orcid": "0000-0003-3305-6281" }, { "id": "McCullough-P-R", "name": { "family": "McCullough", "given": "P. R." }, "orcid": "0000-0001-9165-9799" }, { "id": "Charbonneau-D", "name": { "family": "Charbonneau", "given": "David" }, "orcid": "0000-0002-9003-484X" }, { "id": "Haislip-J", "name": { "family": "Haislip", "given": "Joshua" } }, { "id": "Knutson-H-A", "name": { "family": "Knutson", "given": "Heather A." }, "orcid": "0000-0002-5375-4725" }, { "id": "Reichart-D-E", "name": { "family": "Reichart", "given": "Daniel E." }, "orcid": "0000-0002-5060-3673" }, { "id": "McGee-P", "name": { "family": "McGee", "given": "Padric" } }, { "id": "Monard-B", "name": { "family": "Monard", "given": "Berto" } }, { "id": "Wright-J-T", "name": { "family": "Wright", "given": "Jason T." }, "orcid": "0000-0001-6160-5888" }, { "id": "Ida-Shigeru", "name": { "family": "Ida", "given": "Shigeru" } }, { "id": "Sato-Bun'ei", "name": { "family": "Sato", "given": "Bun'ei" } }, { "id": "Minniti-D", "name": { "family": "Minniti", "given": "Dante" }, "orcid": "0000-0002-7064-099X" } ] }, "title": "The N2K Consortium. III. Short-Period Planets Orbiting HD 149143 and HD 109749", "ispublished": "pub", "full_text_status": "public", "note": "\u00a9 2006 American Astronomical Society. \n\nReceived 2005 September 6; accepted 2005 October 3. \n\nBased on observations obtained at the W. M. Keck Observatory, which is\noperated as a scientific partnership among the California Institute of Technology,\nthe University of California, and the National Aeronautics and Space\nAdministration (NASA). The Observatory was made possible by the generous\nfinancial support of the W. M. Keck Foundation. The authors wish to recognize\nand acknowledge the very significant cultural role and reverence that the summit\nof Mauna Kea has always had within the indigenous Hawaiian community. We\nare most fortunate to have the opportunity to conduct observations from this\nmountain. Keck time has been granted by the National Optical Astronomy\nObservatory (NOAO) and NASA.\n\n\nWe gratefully acknowledge the dedication and support of the Keck Observatory staff, in particular Grant Hill for support with\nHIRES. We thank Rebeccah Winnick (at Yale University) for\nscheduling the SMARTS observations. We thank the NOAO and\nNASA telescope assignment committees for generous allocations of telescope time. Data presented herein were obtained at the W. M. Keck Observatory from telescope time allocated to NASA through the agency's scientific partnership with the California Institute of Technology and the University of California. The Observatory was made possible by the generous financial support of the W. M. Keck Foundation. We thank the Michaelson Science Center for travel support and support through the KDPA program. D. A. F. is a Cottrell Science Scholar of Research Corporation. We acknowledge support from NASA grant NNG05G164G (to D. A. F.); NASA grant NCC5-511 and NSF grant HRD-9706268 (to G. W. H.); NASA grant NAG5-75005 (to G. W. M.); NSF grant AST 99-88358 and NASA grant NAG5-4445 (to S. S. V.); NASA grant NAG5-13285 to P. B.; and NASA grant NNA04CC99A (to G. L.). D. M. is supported by FONDAPN. 15010003.D. E.R. gratefully acknowledges support from NSF's MRI, CAREER, PREST, and REU programs, NASA's APRA, Swift GI, and IDEAS programs, and especially Leonard Goodman and Henry Cox. Work by H. A. K. was supported by a National Science Foundation Graduate Research Fellowship. This research has made use of the Simbad database, operated at CDS, Strasbourg, France.\n\nPublished - 0004-637X_637_2_1094.pdf
", "abstract": "We report the detection of two short-period planets discovered at Keck Observatory. HD 149143 is a metal-rich G0 IV star with a planet of M sin i = 1.33M_J and an orbital radius of 0.053 AU. The best-fit Keplerian model has an orbital period, P = 4.072 days, semivelocity amplitude, K = 149.6 m s^(-1), and eccentricity, e = 0.016 \u00b1 0.01. The host star is chromospherically inactive and metal-rich, with [Fe/H] = 0.26. Based on the T_(eff) and stellar luminosity, we derive a stellar radius of 1.49 R_\u2609. Photometric observations of HD 149143 were carried out using the automated photometric telescopes at Fairborn Observatory. HD 149143 is photometrically constant over the radial velocity period to 0.0003 \u00b1 0.0002 mag, supporting the existence of the planetary companion. No transits were detected down to a photometric limit of approximately 0.02%, eliminating transiting planets with a variety of compositions and constraining the orbital inclination to less than 83\u00b0. A short-period planet was also detected around HD 109749, a G3 IV star. HD 109749 is chromospherically inactive, with [Fe/H] = 0.25 and a stellar radius of 1.24. The radial velocities for HD 109749 are modeled by a Keplerian with P = 5.24 days and K = 28.7 m s^(-1). The inferred planet mass is M sin i = 0.28M_J and the semimajor axis of this orbit is 0.0635 AU. Photometry of HD 109749 was obtained with the SMARTS consortium telescope, the PROMPT telescope, and by transitsearch.org observers in Adelaide and Pretoria. These observations did not detect a decrement in the brightness of the host star at the predicted ephemeris time, and they constrain the orbital inclination to less than 85\u00b0 for gas giant planets with radii down to 0.7R_J.", "date": "2006-02-01", "date_type": "published", "publication": "Astrophysical Journal", "volume": "637", "number": "2", "publisher": "American Astronomical Society", "pagerange": "1094-1101", "id_number": "CaltechAUTHORS:20130109-153237794", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20130109-153237794", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "W. M. Keck Foundation" }, { "agency": "Cottrell Scholar of Research Corporation" }, { "agency": "NASA", "grant_number": "NG05G164G" }, { "agency": "NASA", "grant_number": "NCC5-511" }, { "agency": "NSF", "grant_number": "HRD-9706268" }, { "agency": "NASA", "grant_number": "NAG5-75005" }, { "agency": "NSF", "grant_number": "AST 99-88358" }, { "agency": "NASA", "grant_number": "NAG5-4445" }, { "agency": "NASA", "grant_number": "NAG5-13285" }, { "agency": "NASA", "grant_number": "NNA04CC99A" }, { "agency": "Fondo de Financiamiento de Centros de Investigaci\u00f3n en \u00c1reas Prioritarias (FONDAP)", "grant_number": "15010003" }, { "agency": "NSF Graduate Research Fellowship" } ] }, "local_group": { "items": [ { "id": "Division-of-Geological-and-Planetary-Sciences" } ] }, "doi": "10.1086/498557", "primary_object": { "basename": "0004-637X_637_2_1094.pdf", "url": "https://authors.library.caltech.edu/records/qy2qm-jeb92/files/0004-637X_637_2_1094.pdf" }, "resource_type": "article", "pub_year": "2006", "author_list": "Fischer, Debra A.; Laughlin, Gregory; et el." }, { "id": "https://authors.library.caltech.edu/records/emkn5-kde38", "eprint_id": 36302, "eprint_status": "archive", "datestamp": "2023-08-19 16:37:04", "lastmod": "2023-10-20 22:59:35", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Sato-Bun'ei", "name": { "family": "Sato", "given": "Bun'ei" } }, { "id": "Fischer-D-A", "name": { "family": "Fischer", "given": "Debra A." }, "orcid": "0000-0003-2221-0861" }, { "id": "Henry-G-W", "name": { "family": "Henry", "given": "Gregory W." }, "orcid": "0000-0003-4155-8513" }, { "id": "Laughlin-G-P", "name": { "family": "Laughlin", "given": "Greg" }, "orcid": "0000-0002-3253-2621" }, { "id": "Butler-R-P", "name": { "family": "Butler", "given": "R. Paul" } }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "Geoffrey W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Vogt-S-S", "name": { "family": "Vogt", "given": "Steven S." } }, { "id": "Bodenheimer-P", "name": { "family": "Bodenheimer", "given": "Peter" }, "orcid": "0000-0001-6093-3097" }, { "id": "Ida-Shigeru", "name": { "family": "Ida", "given": "Shigeru" } }, { "id": "Toyota-Eri", "name": { "family": "Toyota", "given": "Eri" } }, { "id": "Wolf-A-S", "name": { "family": "Wolf", "given": "Aaron" } }, { "id": "Valenti-J-A", "name": { "family": "Valenti", "given": "Jeff A." }, "orcid": "0000-0003-3305-6281" }, { "id": "Boyd-L-J", "name": { "family": "Boyd", "given": "Louis J." } }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John A." }, "orcid": "0000-0001-9808-7172" }, { "id": "Wright-J-T", "name": { "family": "Wright", "given": "Jason T." }, "orcid": "0000-0001-6160-5888" }, { "id": "Ammons-M", "name": { "family": "Ammons", "given": "Mark" } }, { "id": "Robinson-S-E", "name": { "family": "Robinson", "given": "Sarah" } }, { "id": "Strader-J", "name": { "family": "Strader", "given": "Jay" }, "orcid": "0000-0002-1468-9668" }, { "id": "McCarthy-C", "name": { "family": "McCarthy", "given": "Chris" } }, { "id": "Tah-K-L", "name": { "family": "Tah", "given": "K. L." } }, { "id": "Minniti-D", "name": { "family": "Minniti", "given": "Dante" }, "orcid": "0000-0002-7064-099X" } ] }, "title": "The N2K Consortium. II. A Transiting Hot Saturn around HD 149026 with a Large Dense Core", "ispublished": "pub", "full_text_status": "public", "note": "\u00a9 2005 American Astronomical Society. Receivved 2005 May 31; accepted 2005 June 28. \nBased on data collected at the Subaru Telescope, which is operated by the\nNational Astronomical Observatory of Japan.\n\nBased on observations obtained at the W. M. Keck Observatory, which is\noperated by the University of California and the California Institute of Technology.\nKeck time has been granted by NOAO and NASA.\n\n\nWe thank Akito Tajitsu for his expertise and support of the Subaru HDS observations. We gratefully acknowledge the dedication and support of the Keck Observatory staff, in particular Grant Hill for support with HIRES. We thank the NOAO and NASA telescope assignment committees for generous allocations of telescope time. Data presented herein were obtained at the W. M. Keck Observatory from telescope time allocated to NASA through the agency's scientific partnership with the California Institute of Technology and the University of California. The Observatory was made possible by the generous financial support of the W. M. Keck Foundation. We thank the Michaelson Science Center for travel support through\nthe KDPA program. D. A. F. is a Cottrell Science Scholar of the Research Corporation. We acknowledge support from NASA\ngrant NNG05G164G (to D. A. F.), NASA grant NCC5-511 and\nNSF grant HRD 97-06268 (to G. W. H. ), NASA grant NAG5-\n75005 (to G. W. M. ), NSF grant AST 99-88358 and NASA\ngrant NAG5-4445 (to S. S. V.), NASA grant NAG5-13285 (to\nP. B.), and NASA grant NNA04CC99A (to G. L.). G.W. H. also\nacknowledges timely support by David Bradstreet for requested modifications to his light-curve analysis software to fit the unexpectedly shallow transits in HD 149026 and thanks Stephen Henry for assistance in the preparation of Figure 5. D.M. is supported by FONDAP 15010003. This research has made use of the SIMBAD database, operated at CDS, Strasbourg, France. The authors extend thanks to those of native Hawaiian ancestry on whose sacred mountain of Mauna Kea we are privileged to be guests. Without their generous hospitality, the Subaru and Keck observations presented herein would not have been possible.\n\nPublished - 0004-637X_633_1_465.pdf
", "abstract": "Doppler measurements from Subaru and Keck have revealed radial velocity variations in the V = 8.15, G0 IV star HD 149026 consistent with a Saturn-mass planet in a 2.8766 day orbit. Photometric observations at Fairborn Observatory have detected three complete transit events with depths of 0.003 mag at the predicted times of conjunction. HD 149026 is now the second-brightest star with a transiting extrasolar planet. The mass of the star, based on interpolation of stellar evolutionary models, is 1.3 \u00b1 0.1 M_\u2609; together with the Doppler amplitude K_1 = 43.3 m s^(-1), we derive a planet mass M sin i = 0.36M_J and orbital radius 0.042 AU. HD 149026 is chromospherically inactive and metal-rich with spectroscopically derived [Fe/H] = +0.36, T_(eff) = 6147 K, log g = 4.26, and v sin i = 6.0 km s^(-1). Based on T_(eff) and the stellar luminosity of 2.72 L_\u2609, we derive a stellar radius of 1.45 R_\u2609. Modeling of the three photometric transits provides an orbital inclination of 85\u00ba.3 \u00b1 1\u00ba.0 and (including the uncertainty in the stellar radius) a planet radius of (0.725 \u00b1 0.05)R_J. Models for this planet mass and radius suggest the presence of a ~67 M_\u2295 core composed of elements heavier than hydrogen and helium. This substantial planet core would be difficult to construct by gravitational instability.", "date": "2005-11-01", "date_type": "published", "publication": "Astrophysical Journal", "volume": "633", "number": "1", "publisher": "American Astronomical Society", "pagerange": "465-473", "id_number": "CaltechAUTHORS:20130110-110537594", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20130110-110537594", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "W. M. Keck Foundation" }, { "agency": "Cottrell Scholar of Research Corporation" }, { "agency": "NASA", "grant_number": "NNG05G164G" }, { "agency": "NASA", "grant_number": "NCC5-511" }, { "agency": "NSF", "grant_number": "HRD 97-06268" }, { "agency": "NASA", "grant_number": "NAG5-75005" }, { "agency": "NSF", "grant_number": "AST 99-88358" }, { "agency": "NASA", "grant_number": "NAG5-4445" }, { "agency": "NASA", "grant_number": "NAG5-13285" }, { "agency": "NASA", "grant_number": "NNA04CC99A" }, { "agency": "Fondo de Financiamiento de Centros de Investigaci\u00f3n en \u00c1reas Prioritarias (FONDAP)", "grant_number": "15010003" } ] }, "doi": "10.1086/449306", "primary_object": { "basename": "0004-637X_633_1_465.pdf", "url": "https://authors.library.caltech.edu/records/emkn5-kde38/files/0004-637X_633_1_465.pdf" }, "resource_type": "article", "pub_year": "2005", "author_list": "Sato, Bun'ei; Fischer, Debra A.; et el." }, { "id": "https://authors.library.caltech.edu/records/5skj7-sx822", "eprint_id": 36250, "eprint_status": "archive", "datestamp": "2023-08-19 16:30:03", "lastmod": "2023-10-20 22:55:50", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Vogt-S-S", "name": { "family": "Vogt", "given": "Steven S." } }, { "id": "Butler-R-P", "name": { "family": "Butler", "given": "R. Paul" } }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "Geoffrey W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Fischer-D-A", "name": { "family": "Fischer", "given": "Debra A." }, "orcid": "0000-0003-2221-0861" }, { "id": "Henry-G-W", "name": { "family": "Henry", "given": "Gregory W." }, "orcid": "0000-0003-4155-8513" }, { "id": "Laughlin-G-P", "name": { "family": "Laughlin", "given": "Greg" }, "orcid": "0000-0002-3253-2621" }, { "id": "Wright-J-T", "name": { "family": "Wright", "given": "Jason T." }, "orcid": "0000-0001-6160-5888" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John A." }, "orcid": "0000-0001-9808-7172" } ] }, "title": "Five New Multicomponent Planetary Systems", "ispublished": "pub", "full_text_status": "public", "note": "\u00a9 2005 American Astronomical Society. Received 2005 January 20; accepted 2005 June 22. \nBased on observations obtained at the W. M. Keck Observatory, which is\noperated jointly by the University of California and the California Institute of\nTechnology. Keck time has been granted by both NASA and the University of\nCalifornia.\nWe thank A. Cumming, E. Ford, and Kevin Apps for valuable discussions. We thank Mike Liu for adaptive optics images of target stars. We gratefully acknowledge the efforts and dedication of the Keck Observatory staff. We also thank Lou Boyd for his\nongoing support of Fairborn Observatory. We appreciate support by NASA grant NAG5-75005 and by NSF grants AST 03-07493 and AST 99-88087 (to S. S. V. ), by NASA grant NAG5-12182, and travel support from the Carnegie Institution of Washington (to R. P. B.). G. W. H. acknowledges support from NASA grant NCC5-511 and NSF grant HRD-9706268. We are also grateful for support by Sun Microsystems. We thank the NASA and UC Telescope assignment committees for allocations of telescope time. This research has made use of the SIMBAD database, operated at CDS, Strasbourg, France. The authors wish to extend special thanks to those of Hawaiian ancestry on whose sacred\nmountain of Mauna Kea we are privileged to be guests. Without their generous hospitality, the Keck observations presented herein would not have been possible.\n\nPublished - 0004-637X_632_1_638.pdf
", "abstract": "We report Doppler measurements for six nearby G- and K-type main-sequence stars that show multiple low-mass companions, at least one of which has planetary mass. One system has three planets, the fourth triple-planet system known around a normal star, and another has an extremely low minimum mass of 18 M_\u2295. HD 128311 (K0 V) has two planets (one previously known) with minimum masses (M sin i) of 2.18M_J and 3.21M_J and orbital periods of 1.26 and 2.54 yr, suggesting a possible 2 : 1 resonance. For HD 108874 (G5 V), the velocities reveal two planets (one previously known) having minimum masses and periods of (M sin i_b = 1.36M_J, P_b = 1.08 yr) and (M sin i_c = 1.02M_J, P_c = 4.4 yr). HD 50499 (G1 V) has a planet with P = 6.8 yr and M sin i = 1.7M_J, and the velocity residuals exhibit a trend of -4.8 m s^(-1) yr^(-1), indicating a more distant companion with P > 10 yr and minimum mass of 2M_J. HD 37124 (G4 IV-V) has three planets, one having M sin i = 0.61M_J and P = 154.5 days, as previously known. We find two plausible triple-planet models that fit the data, both having a second planet near P = 840 days, with the more likely model having its third planet in a 6 yr orbit and the other one in a 29 day orbit. For HD 190360, we confirm the planet having P = 7.9 yr and M sin i = 1.5M_J as found by the Geneva team, but we find a distinctly noncircular orbit with e = 0.36 \u00b1 0.03, rendering this not an analog of Jupiter as had been reported. Our velocities also reveal a second planet with P = 17.1 days and M sin i = 18.1 M_\u2295. HD 217107 (G8 IV) has a previously known \"hot Jupiter\" with M sin i = 1.4M_J and P = 7.13 days, and we confirm its high eccentricity, e = 0.13. The velocity residuals reveal an outer companion in an eccentric orbit, having minimum mass of M sin i > 2M_J, eccentricity e ~ 0.5, and a period P > 8 yr, implying a semimajor axis \u03b1 > 4 AU and providing an opportunity for direct detection. We have obtained high-precision photometry of five of the six planetary host stars with three of the automated telescopes at Fairborn Observatory. We can rule out significant brightness variations in phase with the radial velocities in most cases, thus supporting planetary reflex motion as the cause of the velocity variations. Transits are ruled out to very shallow limits for HD 217107 and are also shown to be unlikely for the prospective inner planets of the HD 37124 and HD 108874 systems. HD 128311 is photometrically variable with an amplitude of 0.03 mag and a period of 11.53 days, which is much shorter than the orbital periods of its two planetary companions. This rotation period explains the origin of periodic velocity residuals to the two-planet model of this star. All of the planetary systems here would be further constrained with astrometry by the Space Interferometry Mission.", "date": "2005-10-10", "date_type": "published", "publication": "Astrophysical Journal", "volume": "632", "number": "1", "publisher": "American Astronomical Society", "pagerange": "638-658", "id_number": "CaltechAUTHORS:20130108-151615622", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20130108-151615622", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-75005" }, { "agency": "NSF", "grant_number": "AST 03-07493" }, { "agency": "NSF", "grant_number": "AST 99-88087" }, { "agency": "NASA", "grant_number": "NAG5-12182" }, { "agency": "NASA", "grant_number": "NCC5-511" }, { "agency": "NSF", "grant_number": "HRD-9706268" }, { "agency": "Sun Microsystems" } ] }, "doi": "10.1086/432901", "primary_object": { "basename": "0004-637X_632_1_638.pdf", "url": "https://authors.library.caltech.edu/records/5skj7-sx822/files/0004-637X_632_1_638.pdf" }, "resource_type": "article", "pub_year": "2005", "author_list": "Vogt, Steven S.; Butler, R. Paul; et el." }, { "id": "https://authors.library.caltech.edu/records/k6zgd-1sb76", "eprint_id": 36247, "eprint_status": "archive", "datestamp": "2023-08-19 16:29:00", "lastmod": "2023-10-20 22:55:34", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Winn-J-N", "name": { "family": "Winn", "given": "Joshua N." }, "orcid": "0000-0002-4265-047X" }, { "id": "Noyes-R-W", "name": { "family": "Noyes", "given": "Robert W." } }, { "id": "Holman-M-J", "name": { "family": "Holman", "given": "Matthew J." }, "orcid": "0000-0002-1139-4880" }, { "id": "Charbonneau-D", "name": { "family": "Charbonneau", "given": "David" }, "orcid": "0000-0002-9003-484X" }, { "id": "Ohta-Yasuhiro", "name": { "family": "Ohta", "given": "Yasuhiro" } }, { "id": "Taruya-Atsushi", "name": { "family": "Taruya", "given": "Atsushi" } }, { "id": "Suto-Yasushi", "name": { "family": "Suto", "given": "Yasushi" } }, { "id": "Narita-Norio", "name": { "family": "Narita", "given": "Norio" } }, { "id": "Turner-E-L", "name": { "family": "Turner", "given": "Edwin L." } }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John A." }, "orcid": "0000-0001-9808-7172" }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "Geoffrey W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Butler-R-P", "name": { "family": "Butler", "given": "R. Paul" } }, { "id": "Vogt-S-S", "name": { "family": "Vogt", "given": "Steven S." } } ] }, "title": "Measurement of Spin-Orbit Alignment in an Extrasolar Planetary System", "ispublished": "pub", "full_text_status": "public", "note": "\u00a9 2005 American Astronomical Society. Received 2005 April 25; accepted 2005 June 3. We acknowledge helpful discussions with T. Brown, E. Chiang, S. Gaudi, D. Lin, and G. Torres. We are grateful to J. Wisdom for advice on calculating the rate of tidal heating.Work by J.N.W. was supported by NASA through Hubble Fellowship grant HST-HF-01180.02-A, awarded by the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., for NASA, under contract NAS 5-26555. The visit of E. L. T. to the University of Tokyo was supported by an invitation fellowship program for research in Japan from the Japan Society for Promotion of Science (JSPS). This work was partly supported by a Grant-in-Aid for Scientific\nResearch from JSPS (grants 14102004 and 16340053) and by\nNASA grant NAG5-13148.\n\nPublished - 0004-637X_631_2_1215.pdf
", "abstract": "We determine the stellar, planetary, and orbital properties of the transiting planetary system HD 209458 through a joint analysis of high-precision radial velocities, photometry, and timing of the secondary eclipse. Of primary interest is the strong detection of the Rossiter-McLaughlin effect, the alteration of photospheric line profiles that occurs because the planet occults part of the rotating surface of the star. We develop a new technique for modeling this effect and use it to determine the inclination of the planetary orbit relative to the apparent stellar equator (\u03bb = -4\u00ba.4 \u00b1 1\u00ba.4), and the line-of-sight rotation speed of the star (v sin /_\u2605 = 4.70 \u00b1 0.16 km s^(-1)). The uncertainty in these quantities has been reduced by an order of magnitude relative to the pioneering measurements by Queloz and collaborators. The small but nonzero misalignment is probably a relic of the planet formation epoch, because the expected timescale for tidal coplanarization is larger than the age of the star. Our determination of v sin /\u2605 is a rare case in which rotational line broadening has been isolated from other broadening mechanisms.", "date": "2005-10-01", "date_type": "published", "publication": "Astrophysical Journal", "volume": "631", "number": "2", "publisher": "American Astronomical Society", "pagerange": "1215-1226", "id_number": "CaltechAUTHORS:20130108-143826499", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20130108-143826499", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA Hubble Fellowship", "grant_number": "HST-HF-01180.02-A" }, { "agency": "NASA", "grant_number": "NAS 5-26555" }, { "agency": "Japan Society for Promotion of Science (JSPS)", "grant_number": "14102004" }, { "agency": "Japan Society for Promotion of Science (JSPS)", "grant_number": "16340053" }, { "agency": "NASA", "grant_number": "NAG5-13148" } ] }, "doi": "10.1086/432571", "primary_object": { "basename": "0004-637X_631_2_1215.pdf", "url": "https://authors.library.caltech.edu/records/k6zgd-1sb76/files/0004-637X_631_2_1215.pdf" }, "resource_type": "article", "pub_year": "2005", "author_list": "Winn, Joshua N.; Noyes, Robert W.; et el." }, { "id": "https://authors.library.caltech.edu/records/n96jh-67z54", "eprint_id": 36535, "eprint_status": "archive", "datestamp": "2023-08-22 03:25:18", "lastmod": "2023-10-20 23:16:18", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" }, { "id": "Winn-J-N", "name": { "family": "Winn", "given": "Joshua N." }, "orcid": "0000-0002-4265-047X" }, { "id": "Rampazzi-F", "name": { "family": "Rampazzi", "given": "Francesca" } }, { "id": "Barbieri-C", "name": { "family": "Barbieri", "given": "Cesare" } }, { "id": "Mito-Hiroyuki", "name": { "family": "Mito", "given": "Hiroyuki" } }, { "id": "Tarusawa-Ken-ichi", "name": { "family": "Tarusawa", "given": "Ken-ichi" } }, { "id": "Tsvetkov-M", "name": { "family": "Tsvetkov", "given": "Milcho" } }, { "id": "Borisova-A", "name": { "family": "Borisova", "given": "Ana" } }, { "id": "Meusinger-H", "name": { "family": "Meusinger", "given": "Helmut" } } ] }, "title": "The History of the Mysterious Eclipses of KH 15D. II. Asiago, Kiso, Kitt Peak, Mount Wilson, Palomar, Tautenburg, and Rozhen Observatories, 1954-1997", "ispublished": "pub", "full_text_status": "public", "keywords": "circumstellar matter; stars: individual (KH 15D); stars: pre-main sequence; techniques: photometric", "note": "\u00a9 2005 American Astronomical Society.\n\nReceivved 2004 October 18; accepted 2005 January 5.\n\nWe are indebted to Paolo Maffei, Gino Totsi, Yoshikazu\nNakada, George Carlson, Steve Strom, Bill Schoening, Jean\nMueller, Tony Misch, Peter Quinn, and Dave Monet for their\nkind assistance with the plate archives.We have enjoyed helpful conversations with Catrina Hamilton, Bill Herbst, Matt Holman, Geoff Marcy, and Fred Vrba about this work. M. Bagaglia is to be thanked for the digitization of part of the plates obtained by P. Maffei. We also thank Erin Johnson for assistance with the chromatic analysis and Liliana Lopez for help with the visual inspection of the Mount Wilson plates. This work makes use of data from the digitized Italian photographic archives, produced under contract MIUR/COFIN 2002 to C. Barbieri, Department of Astronomy, University of Padova. J. N. W. is supported by NASA through Hubble Fellowship grant HST HF-01180.02-A, awarded by the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., for NASA under contract NAS 5-26555. M. T. acknowledges support from COST Action-283 and grant BNSF I-1103/2001 of the Bulgarian Ministry of Education and Science.\n\nPublished - 1538-3881_129_4_1978.pdf
", "abstract": "The unusual pre\u2013main-sequence binary star KH 15D undergoes remarkably deep and long-lasting periodic eclipses. Some clues about the reason for these eclipses have come from the observed evolution of the system's light curve over the last century. Here we present UBVRI photometry of KH 15D from 1954 to 1997 based on photographic plates from various observatories. The system has been variable at the \u22481 mag level since at least 1965. There is no evidence of color variations, with a typical limit of \u0394(B - V) < 0.2 mag. We confirm some previously published results that were based on a smaller sample of plates: from approximately 1965 to 1990, the total flux was modulated with the 48 day orbital period of the binary, but the maximum flux was larger, the fractional variations were smaller, and the phase of minimum flux was shifted by almost a half-cycle relative to the modern light curve. All these results are consistent with the recently proposed theory that KH 15D is being occulted by an inclined, precessing, circumbinary ring.", "date": "2005-04", "date_type": "published", "publication": "Astronomical Journal", "volume": "129", "number": "4", "publisher": "American Astronomical Society", "pagerange": "1978-1984", "id_number": "CaltechAUTHORS:20130123-111141537", "issn": "0004-6256", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20130123-111141537", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA Hubble Fellowship", "grant_number": "HST-HF-01180.02-A" }, { "agency": "NASA", "grant_number": "NAS 5-26555" }, { "agency": "COST Action-283" }, { "agency": "Ministry of Education and Science (Bulgaria)", "grant_number": "BNSF I-1103/2001" } ] }, "doi": "10.1086/428597", "primary_object": { "basename": "1538-3881_129_4_1978.pdf", "url": "https://authors.library.caltech.edu/records/n96jh-67z54/files/1538-3881_129_4_1978.pdf" }, "resource_type": "article", "pub_year": "2005", "author_list": "Johnson, John Asher; Winn, Joshua N.; et el." }, { "id": "https://authors.library.caltech.edu/records/m3cwz-skt19", "eprint_id": 36245, "eprint_status": "archive", "datestamp": "2023-08-19 15:21:35", "lastmod": "2023-10-20 22:55:23", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Fischer-D-A", "name": { "family": "Fischer", "given": "Debra A." }, "orcid": "0000-0003-2221-0861" }, { "id": "Laughlin-G-P", "name": { "family": "Laughlin", "given": "Greg" }, "orcid": "0000-0002-3253-2621" }, { "id": "Butler-P", "name": { "family": "Butler", "given": "Paul" } }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "Geoff" }, "orcid": "0000-0002-2909-0113" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John" }, "orcid": "0000-0001-9808-7172" }, { "id": "Henry-G", "name": { "family": "Henry", "given": "Greg" } }, { "id": "Valenti-J", "name": { "family": "Valenti", "given": "Jeff" } }, { "id": "Vogt-S-S", "name": { "family": "Vogt", "given": "Steve" } }, { "id": "Ammons-M", "name": { "family": "Ammons", "given": "Mark" } }, { "id": "Robinson-S", "name": { "family": "Robinson", "given": "Sara" } }, { "id": "Spear-G", "name": { "family": "Spear", "given": "Greg" } }, { "id": "Strader-J", "name": { "family": "Strader", "given": "Jay" }, "orcid": "0000-0002-1468-9668" }, { "id": "Driscoll-P", "name": { "family": "Driscoll", "given": "Peter" } }, { "id": "Fuller-A", "name": { "family": "Fuller", "given": "Abby" } }, { "id": "Johnson-T", "name": { "family": "Johnson", "given": "Teresa" } }, { "id": "Manrao-E", "name": { "family": "Manrao", "given": "Elizabeth" } }, { "id": "McCarthy-C", "name": { "family": "McCarthy", "given": "Chris" } }, { "id": "Mu\u00f1oz-M", "name": { "family": "Mu\u00f1oz", "given": "Melesio" } }, { "id": "Tah-K-L", "name": { "family": "Tah", "given": "K. L." } }, { "id": "Wright-J-T", "name": { "family": "Wright", "given": "Jason" }, "orcid": "0000-0001-6160-5888" }, { "id": "Ida-Shigeru", "name": { "family": "Ida", "given": "Shigeru" } }, { "id": "Sato-Bun'ei", "name": { "family": "Sato", "given": "Bun'ei" } }, { "id": "Toyota-Eri", "name": { "family": "Toyota", "given": "Eri" } }, { "id": "Minniti-D", "name": { "family": "Minniti", "given": "Dante" }, "orcid": "0000-0002-7064-099X" } ] }, "title": "The N2K Consortium. I. A Hot Saturn Planet Orbiting HD 88133", "ispublished": "pub", "full_text_status": "public", "note": "\u00a9 2005 American Astronomical Society. Received 2004 September 7; accepted 2004 October 12. \nBased on observations obtained at the W. M. Keck Observatory, which is\noperated by the University of California and the California Institute of Technology.\nKeck time has been granted by NOAO and NASA.\nWe gratefully acknowledge the dedication and support of the Keck Observatory staff. We thank the NOAO and NASA telescope assignment committees for generous allocations of telescope time. We thank the Michaelson Science Center for travel support and support through the KDPA program. G.W. H.\nacknowledges support from NASA grant NCC5-511 and NSF grant HRD-9706268. We acknowledge support by NASA grant NAG5-75005 (to G. W. M.), NSF grant AST-9988358, NASA grant NAG5-4445 (to S. S. V.), and NASA grant NNG04GKi9G (to G. L.). D. M. is supported by FONDAP 15010003. We are grateful to Sun Microsystems for ongoing support. We thank the anonymous referee for helpful comments. This research has\nmade use of the Simbad database, operated at CDS, Strasbourg, France. The authors extend thanks to those of native Hawaiian ancestry on whose sacred mountain of Mauna Kea we are privileged to be guests. Without their generous hospitality, the Keck observations presented herein would not have been possible.\n\nPublished - 0004-637X_620_1_481.pdf
", "abstract": "The N2K (\"next 2000\") consortium is carrying out a distributed observing campaign with the Keck, Magellan, and Subaru telescopes, as well as the automatic photometric telescopes of Fairborn Observatory, in order to search for short-period gas giant planets around metal-rich stars. We have established a reservoir of more than 14,000 main-sequence and subgiant stars closer than 110 pc, brighter than V = 10.5, and with 0.4 < B - V < 1.2. Because the fraction of stars with planets is a sensitive function of stellar metallicity, a broadband photometric calibration has been developed to identify a subset of 2000 stars with [Fe/H] > 0.1 dex for this survey. We outline the strategy and report the detection of a planet orbiting the metal-rich G5 IV star HD 88133 with a period of 3.41 days, semivelocity amplitude K = 35.7 m s^(-1), and M sin i = 0.29M_J. Photometric observations reveal that HD 88133 is constant on the 3.415 day radial velocity period to a limit of 0.0005 mag. Despite a transit probability of 19.5%, our photometry rules out the shallow transits predicted by the large stellar radius.", "date": "2005-02-10", "date_type": "published", "publication": "Astrophysical Journal", "volume": "620", "number": "1", "publisher": "American Astronomical Society", "pagerange": "481-486", "id_number": "CaltechAUTHORS:20130108-141859820", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20130108-141859820", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NCC5-511" }, { "agency": "NSF", "grant_number": "HRD-9706268" }, { "agency": "NASA", "grant_number": "NAG5-75005" }, { "agency": "NSF", "grant_number": "AST-9988358" }, { "agency": "NASA", "grant_number": "NAG5-4445" }, { "agency": "NASA", "grant_number": "NNG04GKi9G" }, { "agency": "Fondo de Financiamiento de Centros de Investigaci\u00f3n en \u00c1reas Prioritarias (FONDAP)", "grant_number": "15010003" }, { "agency": "Sun Microsystems" } ] }, "doi": "10.1086/426810", "primary_object": { "basename": "0004-637X_620_1_481.pdf", "url": "https://authors.library.caltech.edu/records/m3cwz-skt19/files/0004-637X_620_1_481.pdf" }, "resource_type": "article", "pub_year": "2005", "author_list": "Fischer, Debra A.; Laughlin, Greg; et el." }, { "id": "https://authors.library.caltech.edu/records/h914t-aha55", "eprint_id": 36243, "eprint_status": "archive", "datestamp": "2023-08-22 03:04:24", "lastmod": "2023-10-20 22:55:12", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "Geoffrey W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Butler-R-P", "name": { "family": "Butler", "given": "R. Paul" } }, { "id": "Vogt-S-S", "name": { "family": "Vogt", "given": "Steven S." } }, { "id": "Fischer-D-A", "name": { "family": "Fischer", "given": "Debra A." }, "orcid": "0000-0003-2221-0861" }, { "id": "Henry-G-W", "name": { "family": "Henry", "given": "Gregory W." }, "orcid": "0000-0003-4155-8513" }, { "id": "Laughlin-G-P", "name": { "family": "Laughlin", "given": "Greg" }, "orcid": "0000-0002-3253-2621" }, { "id": "Wright-J-T", "name": { "family": "Wright", "given": "Jason T." }, "orcid": "0000-0001-6160-5888" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John A." }, "orcid": "0000-0001-9808-7172" } ] }, "title": "Five New Extrasolar Planets", "ispublished": "pub", "full_text_status": "public", "keywords": "planetary systems; stars: individual (HD 45350, HD 99492, HD 117207, HD 183263, HD 188015)", "note": "\u00a9 2005 American Astronomical Society. Received 2004 June 25; accepted 2004 September 24. \n\nBased on observations obtained at the W. M. Keck Observatory, which is\noperated jointly by the University of California and the California Institute of\nTechnology. Keck time has been granted by both NASA and the University of\nCalifornia.\n\nWe thank A. Cumming, J. Scargle, E. Ford, and P. Stark for valuable discussions about false alarm probability. We gratefully acknowledge the efforts and dedication of the Keck Observatory staff. We appreciate support by NASA grant NAG5-75005 and by NSF grant AST 03-07493 (to S. S. V.); also support by NSF grant AST 99-88087, by NASA grant NAG5-12182, and travel support from the Carnegie Institution of Washington (to R. P. B.).\nG. W. H. acknowledges support from NASA grant NCC5-511\nand NSF grant HRD-9706268. We are also grateful for support\nby Sun Microsystems. We thank the NASA and UC Telescope\nassignment committees for allocations of telescope time toward the planet search around M dwarfs. This research has made use of the Simbad database, operated at CDS, Strasbourg, France. The authors wish to extend special thanks to those of Hawaiian ancestry on whose sacred mountain of Mauna Kea we are privileged to be guests. Without their generous hospitality, the Keck observations\npresented herein would not have been possible.\n\nPublished - 0004-637X_619_1_570.pdf
", "abstract": "We report multiple Doppler measurements of five nearby FGK main-sequence stars and subgiants obtained during the past 4-6 yr at the Keck Observatory. These stars, namely, HD 183263, HD 117207, HD 188015, HD 45350, and HD 99492, all exhibit coherent variations in their Doppler shifts consistent with a planet in Keplerian motion. The five new planets occupy known realms of planetary parameter space, including a wide range of orbital eccentricities, e = 0-0.78, and semimajor axes, 0.1-3.8 AU, that provide further statistical information about the true distributions of various properties of planetary systems. One of the planets, HD 99492b, has a low minimum mass of 0.112M_(Jup) = 36M_(Earth). Four of the five planets orbit beyond 1 AU. We describe two quantitative tests of the false alarm probability for Keplerian interpretations of measured velocities. The more robust of these involves Monte Carlo realizations of scrambled velocities as a proxy for noise. Keplerian orbital fits to that \"noise\" yield the distribution of \u03c7^2_v to compare with \u03c7^2_v from the original (unscrambled) velocities. We establish a 1% false alarm probability as the criterion for candidate planets. All five of these planet-bearing stars are metal-rich, with [Fe/H] > +0.27, reinforcing the strong correlation between planet occurrence and metallicity. From the full sample of 1330 stars monitored at Keck, Lick, and the Anglo-Australian Telescope, the shortest orbital period for any planet is 2.64 days, showing that shorter periods occur less frequently than 0.1% in the solar neighborhood. Photometric observations were acquired for four of the five host stars with an automatic telescope at Fairborn Observatory. The lack of brightness variations in phase with the radial velocities supports planetary-reflex motion as the cause of the velocity variations. No transits were observed, but their occurrence is not ruled out by our observations.", "date": "2005-01-20", "date_type": "published", "publication": "Astrophysical Journal", "volume": "619", "number": "1", "publisher": "American Astronomical Society", "pagerange": "570-584", "id_number": "CaltechAUTHORS:20130108-140334534", "issn": "0004-637X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20130108-140334534", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG5-75005" }, { "agency": "NSF", "grant_number": "AST 03-07493" }, { "agency": "NSF", "grant_number": "AST 99-88087" }, { "agency": "NASA", "grant_number": "NAG5-12182" }, { "agency": "NASA", "grant_number": "NCC5-511" }, { "agency": "NSF", "grant_number": "HRD-9706268" } ] }, "doi": "10.1086/426384", "primary_object": { "basename": "0004-637X_619_1_570.pdf", "url": "https://authors.library.caltech.edu/records/h914t-aha55/files/0004-637X_619_1_570.pdf" }, "resource_type": "article", "pub_year": "2005", "author_list": "Marcy, Geoffrey W.; Butler, R. Paul; et el." }, { "id": "https://authors.library.caltech.edu/records/2ekzd-81t88", "eprint_id": 37325, "eprint_status": "archive", "datestamp": "2023-08-22 02:22:21", "lastmod": "2023-10-23 17:22:19", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" }, { "id": "Marcy-G-W", "name": { "family": "Marcy", "given": "Geoffrey W." }, "orcid": "0000-0002-2909-0113" }, { "id": "Hamilton-C-M", "name": { "family": "Hamilton", "given": "Catrina M." } }, { "id": "Herbst-W", "name": { "family": "Herbst", "given": "William" } }, { "id": "Johns-Krull-C-M", "name": { "family": "Johns-Krull", "given": "Christopher M." } } ] }, "title": "KH 15D: A Spectroscopic Binary", "ispublished": "pub", "full_text_status": "public", "keywords": "binaries: spectroscopic; circumstellar matter; stars: individual (KH 15D); stars: pre-main sequence; techniques: radial velocities", "note": "\u00a9 2004 American Astronomical Society. Received 2004 March 3; accepted 2004 May 19. \n\nBased on observations obtained at the W. M. Keck Observatory, which\nis operated as a scientific partnership among the California Institute of Technology,\nthe University of California, and the Naional Aeronautics and Space\nAdministration; at Las Campanas Observatory of the Carnegie Institution with\nthe Magellan II Clay Telescope; and at McDonald Observatory of the University\nof Texas at Austin.\n\nWe would like to thank Gibor Basri, Paul Butler, Debra Fischer, and Subanjoy Mohanty for generously lending portions of their observing time for our project. Many thanks to Eugene Chiang, Ruth Murray-Clay, Steve Dawson, and Josh Winn for their helpful conversations and suggestions. We acknowledge support by NASA grant NAG 5-8299 and NSF grant AST 95-20443 (to G. W. M.), NASA grant NAG 5-12502 (to W. H.), and Sun Microsystems. We thank the\nNASA, University of California, and McDonald Observatory\ntelescope assignment committees for allocations of telescope\ntime.\n\nPublished - 1538-3881_128_3_1265.pdf
", "abstract": "We present the results of a high-resolution spectroscopic monitoring program of the eclipsing pre\u2013main-sequence star KH 15D that reveal it to be a single-lined spectroscopic binary. We find that the best-fit Keplerian model has a period P = 48.38 days, which is nearly identical to the photometric period. Thus, we find the best explanation for the periodic dimming of KH 15D is that the binary motion carries the currently visible star alternately above and behind the edge of an obscuring cloud. The data are consistent with the models involving an inclined circumstellar disk, as recently proposed by Winn et al. and Chiang & Murray-Clay. We show that the mass ratio expected from models of pre\u2013main-sequence evolution, together with the mass constraints for the visible star, restrict the orbital eccentricity to 0.68 \u2264 e \u2264 0.80 and the mass function to 0.125 M_\u2609 \u2264 FM/sin^3i \u2264 0.5 M_\u2609.", "date": "2004-09", "date_type": "published", "publication": "Astronomical Journal", "volume": "128", "number": "3", "publisher": "American Astronomical Society", "pagerange": "1265-1272", "id_number": "CaltechAUTHORS:20130305-151551062", "issn": "0004-6256", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20130305-151551062", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAG 5-8299" }, { "agency": "NSF", "grant_number": "AST 95-20443" }, { "agency": "NASA", "grant_number": "NAG 5-12502" }, { "agency": "Sun Microsystems" } ] }, "doi": "10.1086/422735", "primary_object": { "basename": "1538-3881_128_3_1265.pdf", "url": "https://authors.library.caltech.edu/records/2ekzd-81t88/files/1538-3881_128_3_1265.pdf" }, "resource_type": "article", "pub_year": "2004", "author_list": "Johnson, John Asher; Marcy, Geoffrey W.; et el." }, { "id": "https://authors.library.caltech.edu/records/rdrrp-63w32", "eprint_id": 37326, "eprint_status": "archive", "datestamp": "2023-08-22 01:44:58", "lastmod": "2023-10-23 17:22:21", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John Asher" }, "orcid": "0000-0001-9808-7172" }, { "id": "Winn-J-N", "name": { "family": "Winn", "given": "Joshua N." }, "orcid": "0000-0002-4265-047X" } ] }, "title": "The history of the mysterious eclipses of KH 15D: Asiago Observatory, 1967-1982", "ispublished": "pub", "full_text_status": "public", "keywords": "circumstellar matter; open clusters and associations: individual (NGC 2264); stars: individual (KH 15D); stars: pre-main sequence; techniques: photometric", "note": "\u00a9 2004 American Astronomical Society. Received 2003 December 16; accepted 2003 December 23. \nBased on data from the digitized Italian photographic archives, produced\nunder contract MIUR/Cofin 2002 to C. Barbieri, Dipartimento di Astronomia,\nUniversit\u00e0 di Padova.\n\nWe are indebted to Francesca Rampazzi and Cesare Barbieri for their kind assistance with the Asiago archive and their hospitality during J. A. J.'s visit. We are also grateful to Milcho Tsvetkov for creating the Wide-Field Plate Database,6 which made it easy to identify promising plate collections. Bill Herbst, Matt Holman, Geoff Marcy, Dimitar Sasselov, and Kris Stanek provided encouragement and comments on the manuscript that were much appreciated. J. N. W. is supported by an NSF Astronomy and Astrophysics Postdoctoral Fellowship\nunder grant AST 01-0347.\n\nPublished - 1538-3881_127_4_2344.pdf
", "abstract": "We are gathering archival observations to determine the photometric history of the unique and unexplained eclipses of the pre\u2013main-sequence star KH 15D. Here we present a light curve from 1967 to 1982, based on photographic plates from Asiago Observatory. During this time, the system alternated periodically between bright and faint states, as observed today. However, the bright state was 0.9 mag brighter than the modern value, and the fractional variation between bright and faint states (\u0394I = 0.7 mag) was smaller than observed today (3.5 mag). A possible explanation for these findings is that the system contains a second star that was previously blended with the eclipsing star but is now completely obscured.", "date": "2004-04", "date_type": "published", "publication": "Astronomical Journal", "volume": "127", "number": "4", "publisher": "American Astronomical Society", "pagerange": "2344-2351", "id_number": "CaltechAUTHORS:20130305-151630676", "issn": "0004-6256", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20130305-151630676", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NSF Astronomy and Astrophysics Fellowship", "grant_number": "AST 01-0347" } ] }, "doi": "10.1086/382520", "primary_object": { "basename": "1538-3881_127_4_2344.pdf", "url": "https://authors.library.caltech.edu/records/rdrrp-63w32/files/1538-3881_127_4_2344.pdf" }, "resource_type": "article", "pub_year": "2004", "author_list": "Johnson, John Asher and Winn, Joshua N." }, { "id": "https://authors.library.caltech.edu/records/5y106-ts808", "eprint_id": 36989, "eprint_status": "archive", "datestamp": "2023-08-22 01:40:52", "lastmod": "2023-10-23 16:00:56", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Winn-J-N", "name": { "family": "Winn", "given": "Joshua N." }, "orcid": "0000-0002-4265-047X" }, { "id": "Holman-M-J", "name": { "family": "Holman", "given": "Matthew J." }, "orcid": "0000-0002-1139-4880" }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "John A." }, "orcid": "0000-0001-9808-7172" }, { "id": "Stanek-K-Z", "name": { "family": "Stanek", "given": "Krzystof Z." } }, { "id": "Garnavich-P-M", "name": { "family": "Garnavich", "given": "Peter M." } } ] }, "title": "KH 15D: Gradual Occultation of a Pre-Main-Sequence Binary", "ispublished": "pub", "full_text_status": "public", "keywords": "circumstellar matter; open clusters and associations: individual (NGC 2264); stars: individual (KH 15D); stars: pre-main sequence", "note": "\u00a9 2004 American Astronomical Society.\n\nReceived 2003 December 17; accepted 2004 January 20; published 2004 February 12.\n\nWe are very grateful to Cesare Barbieri, Scott Gaudi, Catrina\nHamilton, Bill Herbst, Marc Kuchner, Lucas Laursen, Francesca\nRampazzi, Dimitar Sasselov, Brad Schaefer, and Martin\nWinn for helpful discussions and assistance. This work was\nsupported by the National Science Foundation under grant\n0104347.\n\nPublished - 1538-4357_603_1_L45.pdf
", "abstract": "We propose that the extraordinary \"winking star\" KH 15D is an eccentric pre-main-sequence binary that is gradually being occulted by an opaque screen. This model accounts for the periodicity, depth, duration, and rate of growth of the modern eclipses; the historical light curve from photographic plates; and the existing radial velocity measurements. It also explains the rebrightening events that were previously observed during eclipses and the subsequent disappearance of these events. We predict the future evolution of the system and its full radial velocity curve. Given the small velocity of the occulting screen relative to the center of mass of the binary, the screen is probably associated with the binary and may be the edge of a precessing circumbinary disk.", "date": "2004-03-01", "date_type": "published", "publication": "Astrophysical Journal Letters", "volume": "603", "number": "1", "publisher": "American Astronomical Society", "pagerange": "L45-L48", "id_number": "CaltechAUTHORS:20130219-133837996", "issn": "2041-8205", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20130219-133837996", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NSF", "grant_number": "AST-0104347" } ] }, "doi": "10.1086/383089", "primary_object": { "basename": "1538-4357_603_1_L45.pdf", "url": "https://authors.library.caltech.edu/records/5y106-ts808/files/1538-4357_603_1_L45.pdf" }, "resource_type": "article", "pub_year": "2004", "author_list": "Winn, Joshua N.; Holman, Matthew J.; et el." }, { "id": "https://authors.library.caltech.edu/records/1smk2-z2088", "eprint_id": 1594, "eprint_status": "archive", "datestamp": "2023-08-22 12:59:17", "lastmod": "2023-10-13 22:53:36", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Martins-C-R-F", "name": { "family": "Martins", "given": "Claudia R. F." } }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "Jennifer A." }, "orcid": "0000-0001-9808-7172" }, { "id": "Lawrence-D-M", "name": { "family": "Lawrence", "given": "Diane M." } }, { "id": "Choi-T-J", "name": { "family": "Choi", "given": "Tae-Jin" } }, { "id": "Pisi-A-M", "name": { "family": "Pisi", "given": "Anna Maria" } }, { "id": "Tobin-S-L", "name": { "family": "Tobin", "given": "Sara L." } }, { "id": "Lapidus-D", "name": { "family": "Lapidus", "given": "Denise" } }, { "id": "Wagner-J-D-O", "name": { "family": "Wagner", "given": "John D. O." } }, { "id": "Ruzin-S", "name": { "family": "Ruzin", "given": "Steven" } }, { "id": "McDonald-K", "name": { "family": "McDonald", "given": "Kent" } }, { "id": "Jackson-A-O", "name": { "family": "Jackson", "given": "Andrew O." } } ] }, "title": "Sonchus Yellow Net Rhabdovirus Nuclear Viroplasms Contain Polymerase-Associated Proteins", "ispublished": "pub", "full_text_status": "public", "keywords": "VESICULAR STOMATITIS-VIRUS; BUSHY STUNT VIRUS; STRAND LEADER RNA; NUCLEOCAPSID PROTEIN; PLANT RHABDOVIRUS; GENE-EXPRESSION; SEQUENCE; REPLICATION; IDENTIFICATION; LOCALIZATION", "note": "Copyright \u00a9 1998, American Society for Microbiology. All rights reserved. \n\nReceived 16 December 1997/Accepted 23 March 1998 \n\nWe thank David Baulcombe and Jim Carrington for generously providing plasmids pPC2S and pRTL2-GUS/NIaDBam, respectively, and Simon Santa Cruz for supplying antisera raised against PVX virions used in these experiments. We also thank Paula Sicurello at the Electron Microscope Facility at UC-Berkeley, Denise Schichnes at the CNR Center for Biological Imaging at UC-Berkeley, and David Jackson at the USDA Plant Gene Expression Center for assistance and technical advice about various aspects of these experiments. Michael Goodin, Ignacio Moreno, Teresa Rubio, and Angelika Fath provided suggestions and editorial comments on the manuscript.\n\nA Conselho Nacional de Desenvolvimento Cientificio e Tecnologico Fellowship was awarded to C.R.F.M., and a National Science Foundation Visiting Professorship for Women was awarded to S.L.T. This research was supported by National Science Foundation grant DMB 94-18086 awarded to A.O.J.", "abstract": "We have initiated a study of the cytopathology of nucleorhabdoviruses by analyzing the subcellular localization of sonchus yellow net virus (SYNV) genomic and antigenomic RNAs and the encoded polymerase proteins. In situ hybridizations demonstrated that the minus-strand genomic RNA sequences are restricted to the nuclei of infected cells, while the complementary plus-strand antigenomic RNA sequences are present in both the nuclei and the cytoplasm. Immunofluorescence and immunogold labeling experiments also revealed that the nucleocapsid (N) protein and phosphoprotein (M2) are primarily localized to discrete regions within the nuclei and in virus particles that accumulate in perinuclear spaces. The N protein antiserum specifically labeled the nuclear viroplasms, whereas the M2 antiserum was more generally distributed throughout the nuclei. Antibody detection also indicated that the polymerase (L) protein is present in small amounts in the viroplasm. When the N and M2 proteins were expressed individually from the heterologous potato virus X (PVX) vector, both proteins preferentially accumulated in the nuclei. In addition, viroplasm-like inclusions formed in the nuclei of cells infected with the PVX vector containing the N gene. Fusions of the carboxy terminus of beta -glucuronidase to N and M2 resulted in staining of the nuclei of infected cells following expression from the PVX vector. Deletion analyses suggested that multiple regions of the N protein contain signals that are important for nuclear localization.", "date": "1998-07-01", "date_type": "published", "publication": "Journal of Virology", "volume": "72", "number": "7", "publisher": "Journal of Virology", "pagerange": "5669-5679", "id_number": "CaltechAUTHORS:MARjvir98", "issn": "0022-538X", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:MARjvir98", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "primary_object": { "basename": "MARjvir98.pdf", "url": "https://authors.library.caltech.edu/records/1smk2-z2088/files/MARjvir98.pdf" }, "resource_type": "article", "pub_year": "1998", "author_list": "Martins, Claudia R. F.; Johnson, Jennifer A.; et el." }, { "id": "https://authors.library.caltech.edu/records/m8y25-b8g13", "eprint_id": 55142, "eprint_status": "archive", "datestamp": "2023-08-20 03:18:45", "lastmod": "2023-10-20 21:51:28", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Guillemot-F", "name": { "family": "Guillemot", "given": "Fran\u00e7ois" } }, { "id": "Lo-Li-Ching", "name": { "family": "Lo", "given": "Li-Ching" } }, { "id": "Johnson-J-A", "name": { "family": "Johnson", "given": "Jane A." }, "orcid": "0000-0001-9808-7172" }, { "id": "Auerbach-A", "name": { "family": "Auerbach", "given": "Anna" } }, { "id": "Anderson-D-J", "name": { "family": "Anderson", "given": "David J." }, "orcid": "0000-0001-6175-3872" }, { "id": "Joyner-A-L", "name": { "family": "Joyner", "given": "Alexandra L." } } ] }, "title": "Mammalian achaete-scute Homolog 1 Is Required for the Early Development of Olfactory and Autonomic Neurons", "ispublished": "pub", "full_text_status": "restricted", "note": "\u00a9 1993 by Cell Press. Received 11 June 1993, Revised 17 August 1993, Available online 19 April 2004.\n\nWe gratefully acknowledge K. Harpal for advice and assistance with histological procedures; Drs. T. Edlund, E. E. Geisert, T. Jessell, A. Klar, R. Klein, F. L. Margolis, B. Motro, V. Pachnis, and M. Tessier-Lavigne for the gilts of probes and antibodies; and Drs. A. Calof, C. C. Hui, and B. Motroforcritical reading of the manuscript. We thank\nB. N. Yoshida for his contributions to the early stages of this work (Anderson laboratory). This research was funded by grants from the National Cancer Institute of Canada and Bristol-Myers Squibb Limited to A. L. J. F. G. was supported by the Medical Research Council (MRC) of Canada and J. E. J. by a Young Investigator's Award from the National Neurofibromatosis Foundation. D. J. A. is an Associate Investigator of the Howard Hughes Medical Institute. A. L. J. is an MAC Scientist and a Howard Hughes International Scholar.", "abstract": "The mouse Mash-1 gene, like its Drosophila homologs of the achaete-scute complex (AS-C), encodes a transcription factor expressed in neural precursors. We created a null allele of this gene by homologous recombination in embryonic stem cells. Mice homozygous for the mutation die at birth with apparent breathing and feeding defects. The brain and spinal cord of the mutants appear normal, but their olfactory epithelium and sympathetic, parasympathetic, and enteric ganglia are severely affected. In the olfactory epithelium, neuronal progenitors die at an early stage, whereas the nonneuronal supporting cells are present. In sympathetic ganglia, the mutation arrests the development of neuronal precursors, preventing the generation of sympathetic neurons, but does not affect glial precursor cells. These observations suggest that Mash-1, like its Drosophila homologs of the AS-C, controls a basic operation in development of neuronal progenitors in distinct neural lineages.", "date": "1993-11-05", "date_type": "published", "publication": "Cell", "volume": "75", "number": "3", "publisher": "Elsevier", "pagerange": "463-476", "id_number": "CaltechAUTHORS:20150224-085353453", "issn": "0092-8674", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150224-085353453", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "National Cancer Institute of Canada" }, { "agency": "Bristol-Myers Squibb" }, { "agency": "Medical Research Council (MRC) Canada" }, { "agency": "National Neurofibromatosis Foundation" }, { "agency": "Howard Hughes Medical Institute (HHMI)" } ] }, "doi": "10.1016/0092-8674(93)90381-Y", "resource_type": "article", "pub_year": "1993", "author_list": "Guillemot, Fran\u00e7ois; Lo, Li-Ching; et el." } ]