[ { "id": "https://authors.library.caltech.edu/records/tx01d-7zb58", "eprint_id": 95643, "eprint_status": "archive", "datestamp": "2023-08-22 11:40:43", "lastmod": "2024-02-02 21:12:02", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Nutzman-P", "name": { "family": "Nutzman", "given": "Philip" } }, { "id": "Charbonneau-D", "name": { "family": "Charbonneau", "given": "David" }, "orcid": "0000-0002-9003-484X" }, { "id": "Winn-J-N", "name": { "family": "Winn", "given": "Joshua N." }, "orcid": "0000-0002-4265-047X" }, { "id": "Knutson-H-A", "name": { "family": "Knutson", "given": "Heather A." }, "orcid": "0000-0002-5375-4725" }, { "id": "Fortney-J-J", "name": { "family": "Fortney", "given": "Jonathan J." }, "orcid": "0000-0002-9843-4354" }, { "id": "Holman-M-J", "name": { "family": "Holman", "given": "Matthew J." }, "orcid": "0000-0002-1139-4880" }, { "id": "Agol-E", "name": { "family": "Agol", "given": "Eric" }, "orcid": "0000-0002-0802-9145" } ] }, "title": "A Precise Estimate of the Radius of HD 149026b", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 2009 International Astronomical Union.\n\n
Published - precise_estimate_of_the_radius_of_hd_149026b.pdf
Accepted Version - 0807.1318.pdf
", "abstract": "We present Spitzer 8 \u03bcm transit observations of the extrasolar planet system HD 149026b. At this wavelength, transit light curves are weakly affected by stellar limb-darkening, allowing for a simpler and more accurate determination of planetary parameters. We measure a planet-star radius ratio of R_p/R\u2217=0.05158\u00b10.00077, and in combination with ground-based data and independent constraints on the stellar mass and radius, we derive an orbital inclination of i = 85\u00b0.4^(+0\u00b0.9)_(\u22120\u00b0.8) and a planet radius of 0.755 \u00b1 0.040 R_J. These measurements further support models in which the planet is greatly enriched in heavy elements.", "date": "2008-05", "date_type": "published", "publisher": "Cambridge University Press", "place_of_pub": "Cambridge", "pagerange": "466-469", "id_number": "CaltechAUTHORS:20190521-112359091", "isbn": "9780521889841", "book_title": "Transiting Planets", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20190521-112359091", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "local_group": { "items": [ { "id": "Division-of-Geological-and-Planetary-Sciences" } ] }, "contributors": { "items": [ { "id": "Pont-F", "name": { "family": "Pont", "given": "Fr\u00e9d\u00e9ric" } }, { "id": "Sasselov-D", "name": { "family": "Sasselov", "given": "Dimitar" } }, { "id": "Holman-M", "name": { "family": "Holman", "given": "Matthews" } } ] }, "doi": "10.1017/s1743921308026951", "primary_object": { "basename": "0807.1318.pdf", "url": "https://authors.library.caltech.edu/records/tx01d-7zb58/files/0807.1318.pdf" }, "related_objects": [ { "basename": "precise_estimate_of_the_radius_of_hd_149026b.pdf", "url": "https://authors.library.caltech.edu/records/tx01d-7zb58/files/precise_estimate_of_the_radius_of_hd_149026b.pdf" } ], "resource_type": "book_section", "pub_year": "2008", "author_list": "Nutzman, Philip; Charbonneau, David; et el." }, { "id": "https://authors.library.caltech.edu/records/kj31j-mx972", "eprint_id": 37178, "eprint_status": "archive", "datestamp": "2023-08-22 07:57:07", "lastmod": "2024-02-02 21:11:56", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Deming-D", "name": { "family": "Deming", "given": "Drake" }, "orcid": "0000-0001-5727-4094" }, { "id": "Agol-E", "name": { "family": "Agol", "given": "Eric" }, "orcid": "0000-0002-0802-9145" }, { "id": "Charbonneau-D", "name": { "family": "Charbonneau", "given": "David" }, "orcid": "0000-0002-9003-484X" }, { "id": "Cowan-N-B", "name": { "family": "Cowan", "given": "Nicolas" }, "orcid": "0000-0001-6129-5699" }, { "id": "Knutson-H-A", "name": { "family": "Knutson", "given": "Heather" }, "orcid": "0000-0002-5375-4725" }, { "id": "Marengo-M", "name": { "family": "Marengo", "given": "Massimo" }, "orcid": "0000-0001-9910-9230" } ] }, "title": "Observations of Extrasolar Planets During the non-Cryogenic Spitzer Space Telescope Mission", "ispublished": "unpub", "full_text_status": "public", "keywords": "astronomical observatories; astronomical telescopes; extrasolar planets; astronomical photometry", "note": "\u00a9 2007 American Institute of Physics.\n\nWe thank the Spitzer Science Center for the opportunity to consider and discuss the potential for exoplanet science during the warm mission. We are grateful to Josh Winn and\nAndy Gould for helpful conversations and remarks regarding the relative merits of of ground-based vs. space-borne photometry. We also acknowledge informative conversations\nwith Greg Laughlin on the effects of heating in eccentric orbits.\n\nPublished - APC000089.pdf
", "abstract": "Precision infrared photometry from Spitzer has enabled the first direct studies of light from extrasolar planets, via observations at secondary eclipse in transiting systems. Current Spitzer results include the first longitudinal temperature map of an extrasolar planet, and the first spectra of their atmospheres. Spitzer has also measured a temperature and precise radius for the first transiting Neptune\u2010sized exoplanet, and is beginning to make precise transit timing measurements to infer the existence of unseen low mass planets. The lack of stellar limb darkening in the infrared facilitates precise radius and transit timing measurements of transiting planets. Warm Spitzer will be capable of a precise radius measurement for Earth\u2010sized planets transiting nearby M\u2010dwarfs, thereby constraining their bulk composition. It will continue to measure thermal emission at secondary eclipse for transiting hot Jupiters, and be able to distinguish between planets having broad band emission vs. absorption spectra. It will also be able to measure the orbital phase variation of thermal emission for close\u2010in planets, even non\u2010transiting planets, and these measurements will be of special interest for planets in eccentric orbits. Warm Spitzer will be a significant complement to Kepler, particularly as regards transit timing in the Kepler field. In addition to studying close\u2010in planets, Warm Spitzer will have significant application in sensitive imaging searches for young planets at relatively large angular separations from their parent stars.", "date": "2007", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, NY", "pagerange": "89-100", "id_number": "CaltechAUTHORS:20130227-111026285", "isbn": "978-0-7354-0457-1", "book_title": "The Science Opportunities of the Warm Spitzer Mission Workshop", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20130227-111026285", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "local_group": { "items": [ { "id": "Infrared-Processing-and-Analysis-Center-(IPAC)" }, { "id": "Division-of-Geological-and-Planetary-Sciences" } ] }, "contributors": { "items": [ { "id": "Storrie-Lombardi-L-J", "name": { "family": "Storrie-Lombardi", "given": "L. J." } }, { "id": "Silbermann-N-A", "name": { "family": "Silbermann", "given": "N. A." } } ] }, "doi": "10.1063/1.2806789", "primary_object": { "basename": "APC000089.pdf", "url": "https://authors.library.caltech.edu/records/kj31j-mx972/files/APC000089.pdf" }, "resource_type": "book_section", "pub_year": "2007", "author_list": "Deming, Drake; Agol, Eric; et el." }, { "id": "https://authors.library.caltech.edu/records/kar9t-s4858", "eprint_id": 20681, "eprint_status": "archive", "datestamp": "2023-08-19 19:14:55", "lastmod": "2024-01-13 00:05:51", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "O'Donovan-F-T", "name": { "family": "O'Donovan", "given": "F. T." }, "orcid": "0000-0002-4858-6106" }, { "id": "Charbonneau-D", "name": { "family": "Charbonneau", "given": "D." }, "orcid": "0000-0002-9003-484X" } ] }, "title": "TrES Exoplanets and False Positives: Finding the Needle in the Haystack", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 2007 Astronomical Society of the Pacific. We thank Lynne Hillenbrand for her continued support of this thesis work. This material is based on work supported by the National\nAeronautics and Space Administration under grant NNG05GJ29G, issued through the Origins of Solar Systems Program.\n\nPublished - ODonovan2007p9212Transiting_Extrasolar_Planets_Workshop.pdf
", "abstract": "Our incomplete understanding of the formation of gas giants and\nof their mass\u2013radius relationship has motivated ground\u2013based, wide\u2013field surveys\nfor new transiting extrasolar giant planets. Yet, astrophysical false positives\nhave dominated the yield from these campaigns. Astronomical systems where\nthe light from a faint eclipsing binary and a bright star is blended, producing\na transit\u2013like light curve, are particularly difficult to eliminate. As part of the\nTrans\u2013atlantic Exoplanet Survey, we have encountered numerous false positives\nand have developed a procedure to reject them. We present examples of these\nfalse positives, including the blended system GSC 03885\u201300829 which we showed\nto be a K dwarf binary system superimposed on a late F dwarf star. This transit\ncandidate in particular demonstrates the careful analysis required to identify\nastrophysical false positives in a transit survey. From amongst these impostors,\nwe have found two transiting planets. We discuss our follow-up observations of\nTrES\u20132, the first transiting planet in the Kepler field.", "date": "2007", "date_type": "published", "publisher": "Astronomical Society of the Pacific", "place_of_pub": "San Francisco", "pagerange": "58-63", "id_number": "CaltechAUTHORS:20101105-090929145", "isbn": "978-1-583812-34-1", "book_title": "Transiting Extrasolar Planets Workshop", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20101105-090929145", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NNG05GJ29G" } ] }, "contributors": { "items": [ { "id": "Afonso-C", "name": { "family": "Afonso", "given": "C." } }, { "id": "Weldrake-D", "name": { "family": "Weldrake", "given": "D." } }, { "id": "Henning-Th", "name": { "family": "Henning", "given": "Th." } } ] }, "primary_object": { "basename": "ODonovan2007p9212Transiting_Extrasolar_Planets_Workshop.pdf", "url": "https://authors.library.caltech.edu/records/kar9t-s4858/files/ODonovan2007p9212Transiting_Extrasolar_Planets_Workshop.pdf" }, "resource_type": "book_section", "pub_year": "2007", "author_list": "O'Donovan, F. T. and Charbonneau, D." }, { "id": "https://authors.library.caltech.edu/records/2wa84-nsf19", "eprint_id": 9921, "eprint_status": "archive", "datestamp": "2023-08-22 02:05:36", "lastmod": "2024-01-12 23:30:01", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Charbonneau-D", "name": { "family": "Charbonneau", "given": "David" }, "orcid": "0000-0002-9003-484X" }, { "id": "Brown-T-M", "name": { "family": "Brown", "given": "Timothy M." }, "orcid": "0000-0002-1793-9968" }, { "id": "Dunham-E-W", "name": { "family": "Dunham", "given": "Edward W." } }, { "id": "Latham-D-W", "name": { "family": "Latham", "given": "David W." }, "orcid": "0000-0001-9911-7388" }, { "id": "Looper-D-L", "name": { "family": "Looper", "given": "Dagny L." } }, { "id": "Mandushev-G", "name": { "family": "Mandushev", "given": "Georgi" } } ] }, "title": "Astrophysical False Positives Encountered in Wide-Field Transit Searches", "ispublished": "unpub", "full_text_status": "public", "keywords": "extrasolar planets, eclipsing binary stars, dwarf stars, astronomical photometry, spectroscopy, astronomical catalogues, transits", "note": "\u00a9 2004 American Institute of Physics. \n\nIssue Date: June 24, 2004.\n\nPublished - CHAaipcp04.pdf
", "abstract": "Wide-field photometric transit surveys for Jupiter-sized planets are inundated by astrophysical false positives, namely systems that contain an eclipsing binary and mimic the desired photometric signature. We discuss several examples of such false alarms. These systems were initially identified as candidates by the PSST instrument at Lowell Observatory. For three of the examples, we present follow-up spectroscopy that demonstrates that these systems consist of (1) an M-dwarf in eclipse in front of a larger star, (2) two main-sequence stars presenting grazing-incidence eclipses, and (3) the blend of an eclipsing binary with the light of a third, brighter star. For an additional candidate, we present multi-color follow-up photometry during a subsequent time of eclipse, which reveals that this candidate consists of a blend of an eclipsing binary and a physically unassociated star. We discuss a couple indicators from publicly-available catalogs that can be used to identify which candidates are likely giant stars, a large source of the contaminants in such surveys.", "date": "2004-06-24", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, NY", "pagerange": "151-160", "id_number": "CaltechAUTHORS:CHAaipcp04", "isbn": "0-7354-0190-X", "book_title": "The Search for Other Worlds: Fourteenth Astrophysics Conference, College Park, MD, 13-14 October 2003", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:CHAaipcp04", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "contributors": { "items": [ { "id": "Holt-S-S", "name": { "family": "Holt", "given": "Stephen S." } }, { "id": "Deming-D", "name": { "family": "Deming", "given": "Drake" } } ] }, "doi": "10.1063/1.1774515", "primary_object": { "basename": "CHAaipcp04.pdf", "url": "https://authors.library.caltech.edu/records/2wa84-nsf19/files/CHAaipcp04.pdf" }, "resource_type": "book_section", "pub_year": "2004", "author_list": "Charbonneau, David; Brown, Timothy M.; et el." }, { "id": "https://authors.library.caltech.edu/records/gx3vp-b0v07", "eprint_id": 25164, "eprint_status": "archive", "datestamp": "2023-08-19 13:47:00", "lastmod": "2024-01-13 05:23:19", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "O'Donovan-F-T", "name": { "family": "O'Donovan", "given": "Francis T." } }, { "id": "Charbonneau-D", "name": { "family": "Charbonneau", "given": "David" }, "orcid": "0000-0002-9003-484X" }, { "id": "Kotredes-L", "name": { "family": "Kotredes", "given": "Lewis" } } ] }, "title": "First Results From Sleuth: The Palomar Planet Finder", "ispublished": "unpub", "full_text_status": "public", "keywords": "extrasolar planets, astronomical telescopes, stars, transits, data acquisition, data analysis", "note": "\u00a9 2004 American Institute of Physics. Issue Date: 24 June 2004.\n\nPublished - ODOaipcp04.pdf
", "abstract": "We discuss preliminary results from our first search campaign for transiting planets performed using Sleuth, an automated 10 cm telescope with a 6 degree square field of view. We monitored a field in Hercules for 40 clear nights between UT 2003 May 10 and July 01, and obtained an rms precision (per 15-min average) over the entire data set of better than 1% on the brightest 2026 stars, and better than 1.5% on the brightest 3865 stars. We identified no strong candidates in the Hercules field. We conducted a blind test of our ability to recover transiting systems by injecting signals into our data and measuring the recovery rate as a function of transit depth and orbital period. About 85% of transit signals with a depth of 0.02 mag were recovered. However, only 50% of transit signals with a depth of 0.01 mag were recovered. We expect that the number of stars for which we can search for transiting planets will increase substantially for our current field in Andromeda, due to the lower Galactic latitude of the field.", "date": "2004-06-24", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, NY", "pagerange": "169-172", "id_number": "CaltechAUTHORS:20110830-110513513", "isbn": "0-7354-0190-X", "book_title": "The Search for Other Worlds", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20110830-110513513", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "contributors": { "items": [ { "id": "Holt-S-S", "name": { "family": "Holt", "given": "Stephen S." } }, { "id": "Deming-D", "name": { "family": "Deming", "given": "Drake" } } ] }, "doi": "10.1063/1.1774518", "primary_object": { "basename": "ODOaipcp04.pdf", "url": "https://authors.library.caltech.edu/records/gx3vp-b0v07/files/ODOaipcp04.pdf" }, "resource_type": "book_section", "pub_year": "2004", "author_list": "O'Donovan, Francis T.; Charbonneau, David; et el." }, { "id": "https://authors.library.caltech.edu/records/db690-y1079", "eprint_id": 25151, "eprint_status": "archive", "datestamp": "2023-08-19 13:46:55", "lastmod": "2024-01-13 05:23:12", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Kotredes-L", "name": { "family": "Kotredes", "given": "Lewis" } }, { "id": "Charbonneau-D", "name": { "family": "Charbonneau", "given": "David" }, "orcid": "0000-0002-9003-484X" }, { "id": "Looper-D-L", "name": { "family": "Looper", "given": "Dagny L." } }, { "id": "O'Donovan-F-T", "name": { "family": "O'Donovan", "given": "Francis T." } } ] }, "title": "Sherlock: An Automated Follow-Up Telescope for Wide-Field Transit Searches", "ispublished": "unpub", "full_text_status": "public", "keywords": "extrasolar planets, eclipsing binary stars, astronomical telescopes, astronomical photometry, transits", "note": "\u00a9 2004 American Institute of Physics.\nIssue Date: 24 June 2004.\n\nPublished - KOTaipcp04.pdf
", "abstract": "The most significant challenge currently facing photometric surveys for transiting gas-giant planets is that of confusion with eclipsing binary systems that mimic the photometric signature. A simple way to reject most forms of these false positives is high-precision, rapid-cadence monitoring of the suspected transit at higher angular resolution and in several filters. We are currently\nbuilding a system that will perform higher-angular-resolution, multi-color follow-up observations of candidate systems identified by Sleuth (our wide-field transit survey instrument at Palomar), and its two twin system instruments in Tenerife and northern Arizona.", "date": "2004-06-24", "date_type": "published", "publisher": "American Institute of Physics", "place_of_pub": "Melville, NY", "pagerange": "173-176", "id_number": "CaltechAUTHORS:20110829-135131169", "isbn": "0-7354-0190-X", "book_title": "The Search for Other Worlds", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20110829-135131169", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "contributors": { "items": [ { "id": "Holt-S-S", "name": { "family": "Holt", "given": "S. S." } }, { "id": "Demings-D", "name": { "family": "Demings", "given": "D." } } ] }, "doi": "10.1063/1.1774519", "primary_object": { "basename": "KOTaipcp04.pdf", "url": "https://authors.library.caltech.edu/records/db690-y1079/files/KOTaipcp04.pdf" }, "resource_type": "book_section", "pub_year": "2004", "author_list": "Kotredes, Lewis; Charbonneau, David; et el." } ]