[ { "id": "authors:qxnhm-7hb64", "collection": "authors", "collection_id": "qxnhm-7hb64", "cite_using_url": "https://authors.library.caltech.edu/records/qxnhm-7hb64", "type": "article", "title": "Fund two extremely large US telescopes", "author": [ { "family_name": "McCarthy", "given_name": "Patrick" }, { "family_name": "Kirshner", "given_name": "Robert P.", "orcid": "0000-0002-1966-3942", "clpid": "Kirshner-Robert-P" }, { "family_name": "Shelton", "given_name": "Robert N." } ], "doi": "10.1126/science.adn7832", "issn": "0036-8075", "publisher": "Science", "publication": "Science", "publication_date": "2024-02-16", "series_number": "6684", "volume": "383", "issue": "6684", "pages": "711" }, { "id": "authors:e5p0e-3dq23", "collection": "authors", "collection_id": "e5p0e-3dq23", "cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20230328-706770500.48", "type": "article", "title": "Near-infrared and Optical Nebular-phase Spectra of Type Ia Supernovae SN 2013aa and SN 2017cbv in NGC 5643", "author": [ { "family_name": "Kumar", "given_name": "Sahana", "orcid": "0000-0001-8367-7591", "clpid": "Kumar-Sahana" }, { "family_name": "Hsiao", "given_name": "Eric Y.", "orcid": "0000-0003-1039-2928" }, { "family_name": "Ashall", "given_name": "C.", "orcid": "0000-0002-5221-7557" }, { "family_name": "Phillips", "given_name": "M. M.", "orcid": "0000-0003-2734-0796" }, { "family_name": "Morrell", "given_name": "N.", "orcid": "0000-0003-2535-3091" }, { "family_name": "Hoeflich", "given_name": "P.", "orcid": "0000-0002-4338-6586" }, { "family_name": "Burns", "given_name": "C. R.", "orcid": "0000-0003-4625-6629" }, { "family_name": "Galbany", "given_name": "L.", "orcid": "0000-0002-1296-6887" }, { "family_name": "Baron", "given_name": "E.", "orcid": "0000-0001-5393-1608" }, { "family_name": "Contreras", "given_name": "C.", "orcid": "0000-0001-6293-9062" }, { "family_name": "Davis", "given_name": "S.", "orcid": "0000-0002-2806-5821" }, { "family_name": "Diamond", "given_name": "T.", "orcid": "0000-0002-0805-1908" }, { "family_name": "F\u00f6rster", "given_name": "F.", "orcid": "0000-0003-3459-2270" }, { "family_name": "Graham", "given_name": "M. L.", "orcid": "0000-0002-9154-3136" }, { "family_name": "Karamehmetoglu", "given_name": "E.", "orcid": "0000-0001-6209-838X" }, { "family_name": "Kirshner", "given_name": "R. P.", "orcid": "0000-0002-1966-3942", "clpid": "Kirshner-Robert-P" }, { "family_name": "Koribalski", "given_name": "B.", "orcid": "0000-0003-4351-993X" }, { "family_name": "Krisciunas", "given_name": "K.", "orcid": "0000-0002-6650-694X" }, { "family_name": "Lu", "given_name": "J.", "orcid": "0000-0002-3900-1452" }, { "family_name": "Marion", "given_name": "G. H." }, { "family_name": "Pessi", "given_name": "P. J.", "orcid": "0000-0002-8041-8559" }, { "family_name": "Piro", "given_name": "A. L.", "orcid": "0000-0001-6806-0673" }, { "family_name": "Shahbandeh", "given_name": "M.", "orcid": "0000-0002-9301-5302" }, { "family_name": "Stritzinger", "given_name": "M. D.", "orcid": "0000-0002-5571-1833" }, { "family_name": "Suntzeff", "given_name": "N. B.", "orcid": "0000-0002-8102-181X" }, { "family_name": "Uddin", "given_name": "S. A.", "orcid": "0000-0002-9413-4186" } ], "abstract": "We present multiwavelength time-series spectroscopy of SN 2013aa and SN 2017cbv, two Type Ia supernovae (SNe Ia) on the outskirts of the same host galaxy, NGC 5643. This work utilizes new nebular-phase near-infrared (NIR) spectra obtained by the Carnegie Supernova Project-II, in addition to previously published optical and NIR spectra. Using nebular-phase [Fe ii] lines in the optical and NIR, we examine the explosion kinematics and test the efficacy of several common emission-line-fitting techniques. The NIR [Fe ii] 1.644 \u03bcm line provides the most robust velocity measurements against variations due to the choice of the fit method and line blending. The resulting effects on velocity measurements due to choosing different fit methods, initial fit parameters, continuum and line profile functions, and fit region boundaries were also investigated. The NIR [Fe ii] velocities yield the same radial shift direction as velocities measured using the optical [Fe ii] \u03bb7155 line, but the sizes of the shifts are consistently and substantially lower, pointing to a potential issue in optical studies. The NIR [Fe ii] 1.644 \u03bcm emission profile shows a lack of significant asymmetry in both SNe, and the observed low velocities elevate the importance for correcting for any velocity contribution from the host galaxy's rotation. The low [Fe ii] velocities measured in the NIR at nebular phases disfavor progenitor scenarios in close double-degenerate systems for both SN 2013aa and SN 2017cbv. The time evolution of the NIR [Fe ii] 1.644 \u03bcm line also indicates moderately high progenitor white dwarf central density and potentially high magnetic fields.", "doi": "10.3847/1538-4357/acad73", "issn": "0004-637X", "publisher": "American Astronomical Society", "publication": "Astrophysical Journal", "publication_date": "2023-03-01", "series_number": "1", "volume": "945", "issue": "1", "pages": "Art. No. 27" }, { "id": "authors:cgc9h-m0s12", "collection": "authors", "collection_id": "cgc9h-m0s12", "cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20160127-094616076", "type": "article", "title": "Ejection of the massive Hydrogen-rich envelope timed with the collapse of the stripped SN2014C", "author": [ { "family_name": "Margutti", "given_name": "Raffaella", "orcid": "0000-0003-4768-7586", "clpid": "Margutti-Raffaella" }, { "family_name": "Kamble", "given_name": "A.", "orcid": "0000-0003-0861-5168", "clpid": "Kamble-Atish" }, { "family_name": "Milisavljevic", "given_name": "D.", "orcid": "0000-0002-0763-3885", "clpid": "Milisavljevic-Dan" }, { "family_name": "Zapartas", "given_name": "E.", "clpid": "Zapartas-Emmanouil" }, { "family_name": "de Mink", "given_name": "S.E.", "orcid": "0000-0001-9336-2825", "clpid": "de-Mink-Selma-E" }, { "family_name": "Drout", "given_name": "M.", "orcid": "0000-0001-7081-0082", "clpid": "Drout-Maria-R" }, { "family_name": "Chornock", "given_name": "R.", "orcid": "0000-0002-7706-5668", "clpid": "Chornock-Ryan" }, { "family_name": "Risaliti", "given_name": "G.", "clpid": "Risaliti-Guido" }, { "family_name": "Zauderer", "given_name": "B. A.", "orcid": "0000-0003-1152-518X", "clpid": "Zauderer-B-Ashley" }, { "family_name": "Bietenholz", "given_name": "M.", "orcid": "0000-0002-0592-4152", "clpid": "Bietenholz-Michael-F" }, { "family_name": "Cantiello", "given_name": "M.", "orcid": "0000-0002-8171-8596", "clpid": "Cantiello-Matteo" }, { "family_name": "Chakraborti", "given_name": "S.", "clpid": "Chakraborti-Sankhamala" }, { "family_name": "Chomiuk", "given_name": "L.", "orcid": "0000-0002-8400-3705", "clpid": "Chomiuk-Laura" }, { "family_name": "Fong", "given_name": "W.", "orcid": "0000-0002-7374-935X", "clpid": "Fong-Wen-Fai" }, { "family_name": "Grefenstette", "given_name": "B. W.", "orcid": "0000-0002-1984-2932", "clpid": "Grefenstette-Brian-W" }, { "family_name": "Guidorzi", "given_name": "C.", "orcid": "0000-0001-6869-0835", "clpid": "Guidorzi-Cristiano" }, { "family_name": "Kirshner", "given_name": "R. P.", "orcid": "0000-0002-1966-3942", "clpid": "Kirshner-Robert-P" }, { "family_name": "Parrent", "given_name": "J. T.", "clpid": "Parrent-Jerod-T" }, { "family_name": "Patnaude", "given_name": "D.", "clpid": "Patnaude-D" }, { "family_name": "Soderberg", "given_name": "A. M.", "clpid": "Soderberg-Alicia-M" }, { "family_name": "Gehrels", "given_name": "N. C.", "clpid": "Gehrels-Neil" }, { "family_name": "Harrison", "given_name": "F.", "orcid": "0000-0002-4226-8959", "clpid": "Harrison-F-A" } ], "abstract": "We present multi-wavelength observations of SN 2014C during the first 500 days. These observations represent the first solid detection of a young extragalactic stripped-envelope SN out to high-energy X-rays ~40 keV. SN 2014C shows ordinary explosion parameters (Ek ~ 1.8 \u00d7 10\u2075\u00b9 erg and M_(ej) ~ 1.7 M_\u2299). However, over an ~1 year timescale, SN 2014C evolved from an ordinary hydrogen-poor supernova into a strongly interacting, hydrogen-rich supernova, violating the traditional classification scheme of type-I versus type-II SNe. Signatures of the SN shock interaction with a dense medium are observed across the spectrum, from radio to hard X-rays, and revealed the presence of a massive shell of ~1 M_\u2299 of hydrogen-rich material at ~6 \u00d7 10\u00b9\u2076) cm. The shell was ejected by the progenitor star in the decades to centuries before collapse. This result challenges current theories of massive star evolution, as it requires a physical mechanism responsible for the ejection of the deepest hydrogen layer of H-poor SN progenitors synchronized with the onset of stellar collapse. Theoretical investigations point at binary interactions and/or instabilities during the last nuclear burning stages as potential triggers of the highly time-dependent mass loss. We constrain these scenarios utilizing the sample of 183 SNe Ib/c with public radio observations. Our analysis identifies SN 2014C-like signatures in ~10% of SNe. This fraction is reasonably consistent with the expectation from the theory of recent envelope ejection due to binary evolution if the ejected material can survive in the close environment for 10\u00b3\u201310\u2074 years. Alternatively, nuclear burning instabilities extending to core C-burning might play a critical role.", "doi": "10.3847/1538-4357/835/2/140", "pmcid": "PMC5495200", "issn": "1538-4357", "publisher": "American Astronomical Society", "publication": "Astrophysical Journal", "publication_date": "2017-02-01", "series_number": "2", "volume": "835", "issue": "2", "pages": "Art. No. 140" }, { "id": "authors:nhvkq-85x53", "collection": "authors", "collection_id": "nhvkq-85x53", "cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20161220-093154418", "type": "article", "title": "The GALEX Time Domain Survey. II. Wavelength-Dependent Variability of Active Galactic Nuclei in the Pan-STARRS1 Medium Deep Survey", "author": [ { "family_name": "Hung", "given_name": "T.", "clpid": "Hung-T-K" }, { "family_name": "Gezari", "given_name": "S.", "orcid": "0000-0003-3703-5154", "clpid": "Gezari-S" }, { "family_name": "Jones", "given_name": "D. O.", "orcid": "0000-0002-6230-0151", "clpid": "Jones-D-O" }, { "family_name": "Kirshner", "given_name": "R. P.", "orcid": "0000-0002-1966-3942", "clpid": "Kirshner-Robert-P" }, { "family_name": "Chornock", "given_name": "R.", "orcid": "0000-0002-7706-5668", "clpid": "Chornock-R" }, { "family_name": "Berger", "given_name": "E.", "orcid": "0000-0002-9392-9681", "clpid": "Berger-Edo" }, { "family_name": "Rest", "given_name": "A.", "clpid": "Rest-A" }, { "family_name": "Huber", "given_name": "M.", "clpid": "Huber-M-E" }, { "family_name": "Narayan", "given_name": "G.", "orcid": "0000-0001-6022-0484", "clpid": "Narayan-G" }, { "family_name": "Scolnic", "given_name": "D.", "orcid": "0000-0002-4934-5849", "clpid": "Scolnic-D" }, { "family_name": "Waters", "given_name": "C.", "orcid": "0000-0003-1989-4879", "clpid": "Waters-C" }, { "family_name": "Wainscoat", "given_name": "R.", "orcid": "0000-0002-1341-0952", "clpid": "Wainscoat-R-J" }, { "family_name": "Martin", "given_name": "D. C.", "orcid": "0000-0002-8650-1644", "clpid": "Martin-D-Christopher" }, { "family_name": "Forster", "given_name": "K.", "orcid": "0000-0001-5800-5531", "clpid": "Forster-K" }, { "family_name": "Neill", "given_name": "J. D.", "orcid": "0000-0002-0466-1119", "clpid": "Neill-J-D" } ], "abstract": "We analyze the wavelength-dependent variability of a sample of spectroscopically confirmed active galactic nuclei selected from near-UV (NUV) variable sources in the GALEX Time Domain Survey that have a large amplitude of optical variability (difference-flux S/N > 3) in the Pan-STARRS1 Medium Deep Survey (PS1 MDS). By matching GALEX and PS1 epochs in five bands (NUV, g_(P1), r_(P1), i_(P1), z_(P1)) in time, and taking their flux difference, we create co-temporal difference-flux spectral energy distributions (\u0394\u0192SEDs) using two chosen epochs for each of the 23 objects in our sample, on timescales of about a year. We confirm the \"bluer-when-brighter\" trend reported in previous studies, and measure a median spectral index of the \u0394\u0192SEDs of \u0251_\u22cb = 2.1 that is consistent with an accretion disk spectrum. We further fit the \u0394\u0192SEDs of each source with a standard accretion disk model in which the accretion rate changes from one epoch to the other. In our sample, 17 out of 23 (~74%) sources are described well by this variable accretion-rate disk model, with a median average characteristic disk temperature T^* of 1.2 x 10^5 K that is consistent with the temperatures expected, given the distribution of accretion rates and black hole masses inferred for the sample. Our analysis also shows that the variable accretion rate model is a better fit to the \u0394\u0192SEDs than a simple power law.", "doi": "10.3847/1538-4357/833/2/226", "issn": "0004-637X", "publisher": "American Astronomical Society", "publication": "Astrophysical Journal", "publication_date": "2016-12-20", "series_number": "2", "volume": "833", "issue": "2", "pages": "Art. No. 226" }, { "id": "authors:71pdg-keq90", "collection": "authors", "collection_id": "71pdg-keq90", "cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20101022-083635747", "type": "article", "title": "The Absolute Magnitudes of Type Ia Supernovae in the Ultraviolet", "author": [ { "family_name": "Brown", "given_name": "Peter J.", "clpid": "Brown-P-J" }, { "family_name": "Roming", "given_name": "Peter W. A.", "clpid": "Roming-P-W-A" }, { "family_name": "Milne", "given_name": "Peter", "orcid": "0000-0002-0370-157X", "clpid": "Milne-P-A" }, { "family_name": "Bufano", "given_name": "Filomena", "clpid": "Bufano-F" }, { "family_name": "Ciardullo", "given_name": "Robin", "clpid": "Ciardullo-R" }, { "family_name": "Elias-Rosa", "given_name": "Nancy", "orcid": "0000-0002-1381-9125", "clpid": "Elias-Rosa-N" }, { "family_name": "Filippenko", "given_name": "Alexei V.", "orcid": "0000-0003-3460-0103", "clpid": "Filippenko-A-V" }, { "family_name": "Foley", "given_name": "Ryan J.", "clpid": "Foley-R-J" }, { "family_name": "Gehrels", "given_name": "Neil", "clpid": "Gehrels-N" }, { "family_name": "Gronwall", "given_name": "Caryl", "clpid": "Gronwall-C" }, { "family_name": "Hicken", "given_name": "Malcolm", "clpid": "Hicken-M" }, { "family_name": "Holland", "given_name": "Stephen T.", "clpid": "Holland-S-T" }, { "family_name": "Hoversten", "given_name": "Erik A.", "clpid": "Hoversten-E-A" }, { "family_name": "Immler", "given_name": "Stefan", "clpid": "Immler-S" }, { "family_name": "Kirshner", "given_name": "Robert P.", "orcid": "0000-0002-1966-3942", "clpid": "Kirshner-Robert-P" }, { "family_name": "Li", "given_name": "Weidong", "clpid": "Li-Weidong" }, { "family_name": "Mazzali", "given_name": "Paolo", "orcid": "0000-0001-6876-8284", "clpid": "Mazzali-P-A" }, { "family_name": "Phillips", "given_name": "Mark M.", "orcid": "0000-0003-2734-0796", "clpid": "Phillips-M-M" }, { "family_name": "Pritchard", "given_name": "Tyler", "clpid": "Pritchard-T-A" }, { "family_name": "Still", "given_name": "Martin", "clpid": "Still-M" }, { "family_name": "Turatto", "given_name": "Massimo", "clpid": "Turatto-M" }, { "family_name": "Vanden Berk", "given_name": "Daniel", "clpid": "Vanden-Berk-D-E" } ], "abstract": "We examine the absolute magnitudes and light-curve shapes of 14 nearby (redshift z = 0.004-0.027) Type Ia supernovae (SNe Ia) observed in the ultraviolet (UV) with the Swift Ultraviolet/Optical Telescope. Colors and absolute magnitudes are calculated using both a standard Milky Way extinction law and one for the Large Magellanic Cloud that has been modified by circumstellar scattering. We find very different behavior in the near-UV filters (uvw1_(rc) covering ~2600-3300 \u00c5 after removing optical light, and u \u22483000-4000 \u00c5) compared to a mid-UV filter (uvm2 \u22482000-2400 \u00c5). The uvw1_(rc) \u2013 b colors show a scatter of ~0.3 mag while uvm2\u2013b scatters by nearly 0.9 mag. Similarly, while the scatter in colors between neighboring filters is small in the optical and somewhat larger in the near-UV, the large scatter in the uvm2 \u2013 uvw1 colors implies significantly larger spectral variability below 2600 \u00c5. We find that in the near-UV the absolute magnitudes at peak brightness of normal SNe Ia in our sample are correlated with the optical decay rate with a scatter of 0.4 mag, comparable to that found for the optical in our sample. However, in the mid-UV the scatter is larger, ~1 mag, possibly indicating differences in metallicity. We find no strong correlation between either the UV light-curve shapes or the UV colors and the UV absolute magnitudes. With larger samples, the UV luminosity might be useful as an additional constraint to help determine distance, extinction, and metallicity in order to improve the utility of SNe Ia as standardized candles.", "doi": "10.1088/0004-637X/721/2/1608", "issn": "0004-637X", "publisher": "American Astronomical Society", "publication": "Astrophysical Journal", "publication_date": "2010-10-01", "series_number": "2", "volume": "721", "issue": "2", "pages": "1608-1626" }, { "id": "authors:3bfg8-d4926", "collection": "authors", "collection_id": "3bfg8-d4926", "cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20100806-100726542", "type": "article", "title": "The Type Ia Supernova Rate in Redshift 0.5-0.9 Galaxy Clusters", "author": [ { "family_name": "Sharon", "given_name": "Keren", "orcid": "0000-0002-7559-0864", "clpid": "Sharon-Keren" }, { "family_name": "Gal-Yam", "given_name": "Avishay", "orcid": "0000-0002-3653-5598", "clpid": "Gal-Yam-A" }, { "family_name": "Maoz", "given_name": "Dan", "clpid": "Maoz-Dan" }, { "family_name": "Filippenko", "given_name": "Alexei V.", "orcid": "0000-0003-3460-0103", "clpid": "Filippenko-A-V" }, { "family_name": "Foley", "given_name": "Ryan J.", "clpid": "Foley-R-J" }, { "family_name": "Silverman", "given_name": "Jeffrey M.", "orcid": "0000-0003-3325-3365", "clpid": "Silverman-J-M" }, { "family_name": "Ebeling", "given_name": "Harald", "clpid": "Ebeling-Harald" }, { "family_name": "Ma", "given_name": "Cheng-Jiun", "clpid": "Ma-Cheng-Jiun" }, { "family_name": "Ofek", "given_name": "Eran O.", "orcid": "0000-0002-6786-8774", "clpid": "Ofek-E-O" }, { "family_name": "Kneib", "given_name": "Jean-Paul", "orcid": "0000-0002-4616-4989", "clpid": "Kneib-J-P" }, { "family_name": "Donahue", "given_name": "Megan", "orcid": "0000-0002-2808-0853", "clpid": "Donahue-Megan" }, { "family_name": "Ellis", "given_name": "Richard S.", "orcid": "0000-0001-7782-7071", "clpid": "Ellis-R-S" }, { "family_name": "Freedman", "given_name": "Wendy L.", "orcid": "0000-0003-3431-9135", "clpid": "Freedman-W-L" }, { "family_name": "Kirshner", "given_name": "Robert P.", "orcid": "0000-0002-1966-3942", "clpid": "Kirshner-Robert-P" }, { "family_name": "Mulchaey", "given_name": "John S.", "clpid": "Mulchaey-J-S" }, { "family_name": "Sarajedini", "given_name": "Vicki L.", "clpid": "Sarajedini-V-L" }, { "family_name": "Voit", "given_name": "G. Mark", "clpid": "Voit-G-M" } ], "abstract": "Supernova (SN) rates are potentially powerful diagnostics of metal enrichment and SN physics, particularly in galaxy clusters with their deep, metal-retaining potentials and relatively simple star formation histories. We have carried out a survey for SNe in galaxy clusters, at a redshift range of 0.5 < z < 0.9, using the Advanced Camera for Surveys (ACS) on the Hubble Space Telescope. We reimaged a sample of 15 clusters that were previously imaged by ACS, thus obtaining two to three epochs per cluster in which we discovered five likely cluster SNe, six possible cluster Type Ia supernovae, two hostless SN candidates, and several background and foreground events. Keck spectra of the host galaxies were obtained to establish cluster membership. We conducted detailed efficiency simulations, and measured the stellar luminosities of the clusters using Subaru images. We derive a cluster SN rate of 0.35SNu_B ^(+0.17)_(\u20130.12)(statistical) \u00b10.13(classification) \u00b10.01(systematic) (where SNu_B = SNe (100 yr 10^(10) L_(B,\u2299))^(\u20131)) and 0.112SNu_M ^(+0.055)_(\u20130.039)(statistical) \u00b10.042(classification) \u00b10.005(systematic) (where SNu_M = SNe (100 yr 10^(10) M_\u2299)^(\u20131)). As in previous measurements of cluster SN rates, the uncertainties are dominated by small-number statistics. The SN rate in this redshift bin is consistent with the SN rate in clusters at lower redshifts (to within the uncertainties), and shows that there is, at most, only a slight increase of cluster SN rate with increasing redshift. The low and fairly constant SN Ia rate out to z \u2248 1 implies that the bulk of the iron mass in clusters was already in place by z \u2248 1. The recently observed doubling of iron abundances in the intracluster medium between z = 1 and 0, if real, is likely to be the result of redistribution of existing iron, rather than new production of iron.", "doi": "10.1088/0004-637X/718/2/876", "issn": "0004-637X", "publisher": "American Astronomical Society", "publication": "Astrophysical Journal", "publication_date": "2010-08-01", "series_number": "2", "volume": "718", "issue": "2", "pages": "876-893" }, { "id": "authors:bc64h-74a62", "collection": "authors", "collection_id": "bc64h-74a62", "cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20090914-141715190", "type": "article", "title": "Variable Sodium Absorption in a Low-extinction Type Ia Supernova", "author": [ { "family_name": "Simon", "given_name": "Joshua D.", "clpid": "Simon-J-D" }, { "family_name": "Gal-Yam", "given_name": "Avishay", "orcid": "0000-0002-3653-5598", "clpid": "Gal-Yam-A" }, { "family_name": "Gnat", "given_name": "Orly", "clpid": "Gnat-O" }, { "family_name": "Quimby", "given_name": "Robert M.", "orcid": "0000-0001-9171-5236", "clpid": "Quimby-R-M" }, { "family_name": "Ganeshalingam", "given_name": "Mohan", "clpid": "Ganeshalingam-M" }, { "family_name": "Silverman", "given_name": "Jeffrey M.", "orcid": "0000-0003-3325-3365", "clpid": "Silverman-J-M" }, { "family_name": "Blondin", "given_name": "St\u00e9phane", "clpid": "Blondin-S" }, { "family_name": "Li", "given_name": "Weidong", "clpid": "Li-Weidong" }, { "family_name": "Filippenko", "given_name": "Alexei V.", "orcid": "0000-0003-3460-0103", "clpid": "Filippenko-A-V" }, { "family_name": "Wheeler", "given_name": "J. Craig", "clpid": "Wheeler-J-C" }, { "family_name": "Kirshner", "given_name": "Robert P.", "orcid": "0000-0002-1966-3942", "clpid": "Kirshner-Robert-P" }, { "family_name": "Patat", "given_name": "Ferdinando", "orcid": "0000-0002-0537-3573", "clpid": "Patat-F" }, { "family_name": "Nugent", "given_name": "Peter", "orcid": "0000-0002-3389-0586", "clpid": "Nugent-P-E" }, { "family_name": "Foley", "given_name": "Ryan J.", "clpid": "Foley-R-J" }, { "family_name": "Vogt", "given_name": "Steven S.", "clpid": "Vogt-S-S" }, { "family_name": "Butler", "given_name": "R. Paul", "clpid": "Butler-R-P" }, { "family_name": "Peek", "given_name": "Kathryn M. G.", "clpid": "Peek-K-M-G" }, { "family_name": "Rosolowsky", "given_name": "Erik", "orcid": "0000-0002-5204-2259", "clpid": "Rosolowsky-E" }, { "family_name": "Herczeg", "given_name": "Gregory J.", "orcid": "0000-0002-7154-6065", "clpid": "Herczeg-G-J" }, { "family_name": "Sauer", "given_name": "Daniel N.", "clpid": "Sauer-D-N" }, { "family_name": "Mazzali", "given_name": "Paolo A.", "orcid": "0000-0001-6876-8284", "clpid": "Mazzali-P-A" } ], "abstract": "Recent observations have revealed that some Type Ia supernovae exhibit narrow, time-variable Na I D absorption features. The origin of the absorbing material is controversial, but it may suggest the presence of circumstellar gas in the progenitor system prior to the explosion, with significant implications for the nature of the supernova (SN) progenitors. We present the third detection of such variable absorption, based on six epochs of high-resolution spectroscopy of the Type Ia supernova SN 2007le from the Keck I Telescope and the Hobby-Eberly Telescope. The data span a time frame of approximately three months, from 5 days before maximum light to 90 days after maximum. We find that one component of the NaID absorption lines strengthened significantly with time, indicating a total column density increase of ~2.5 \u00d7 10^(12) cm^(\u20132). The data limit the typical timescale for the variability to be more than 2 days but less than 10 days. The changes appear to be most prominent after maximum light rather than at earlier times when the ultraviolet flux from the SN peaks. As with SN 2006X, we detect no change in the Ca II H and K absorption lines over the same time period, rendering line-of-sight effects improbable and suggesting a circumstellar origin for the absorbing material. Unlike the previous two supernovae exhibiting variable absorption, SN 2007le is not highly reddened (E_(B \u2013 V) = 0.27 mag), also pointing toward circumstellar rather than interstellar absorption. Photoionization calculations show that the data are consistent with a dense (10^7 cm^(\u20133)) cloud or clouds of gas located ~0.1 pc (3 \u00d7 10^(17) cm) from the explosion. These results broadly support the single-degenerate scenario previously proposed to explain the variable absorption, with mass loss from a nondegenerate companion star responsible for providing the circumstellar gas. We also present possible evidence for narrow H\u03b1 emission associated with the SN, which will require deep imaging and spectroscopy at late times to confirm.", "doi": "10.1088/0004-637X/702/2/1157", "issn": "0004-637X", "publisher": "American Astronomical Society", "publication": "Astrophysical Journal", "publication_date": "2009-09-10", "series_number": "2", "volume": "702", "issue": "2", "pages": "1157-1170" }, { "id": "authors:2gq0q-kdm36", "collection": "authors", "collection_id": "2gq0q-kdm36", "cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20170408-140106620", "type": "article", "title": "The Golden Standard Type Ia Supernova 2005cf: Observations from the Ultraviolet to the Near-Infrared Wavebands", "author": [ { "family_name": "Wang", "given_name": "X.", "orcid": "0000-0002-6937-9034", "clpid": "Wang-Sharon-Xuesong" }, { "family_name": "Li", "given_name": "W.", "clpid": "Li-W" }, { "family_name": "Filippenko", "given_name": "A. V.", "orcid": "0000-0003-3460-0103", "clpid": "Filippenko-A-V" }, { "family_name": "Foley", "given_name": "R. J.", "clpid": "Foley-R-J" }, { "family_name": "Kirshner", "given_name": "R. P.", "orcid": "0000-0002-1966-3942", "clpid": "Kirshner-Robert-P" }, { "family_name": "Modjaz", "given_name": "M.", "orcid": "0000-0001-7132-0333", "clpid": "Modjaz-M" }, { "family_name": "Bloom", "given_name": "J.", "orcid": "0000-0002-7777-216X", "clpid": "Bloom-J-S" }, { "family_name": "Brown", "given_name": "P. J.", "clpid": "Brown-P-J" }, { "family_name": "Carter", "given_name": "D.", "clpid": "Carter-D" }, { "family_name": "Friedman", "given_name": "A. S.", "clpid": "Friedman-A-S" }, { "family_name": "Gal-Yam", "given_name": "A.", "orcid": "0000-0002-3653-5598", "clpid": "Gal-Yam-A" }, { "family_name": "Ganeshalingam", "given_name": "M.", "clpid": "Ganeshalingam-M" }, { "family_name": "Hicken", "given_name": "M.", "clpid": "Hicken-M" }, { "family_name": "Krisciunas", "given_name": "K.", "orcid": "0000-0002-6650-694X", "clpid": "Krisciunas-K" }, { "family_name": "Milne", "given_name": "P.", "orcid": "0000-0002-0370-157X", "clpid": "Milne-P-A" }, { "family_name": "Silverman", "given_name": "J. M.", "orcid": "0000-0003-3325-3365", "clpid": "Silverman-J-M" }, { "family_name": "Suntzeff", "given_name": "N. B.", "clpid": "Suntzeff-N-B" }, { "family_name": "Wood-Vasey", "given_name": "W. M.", "clpid": "Wood-Vasey-W-M" }, { "family_name": "Cenko", "given_name": "S. B.", "orcid": "0000-0003-1673-970X", "clpid": "Cenko-S-B" }, { "family_name": "Challis", "given_name": "P.", "clpid": "Challis-P-J" }, { "family_name": "Fox", "given_name": "D. B.", "orcid": "0000-0002-3714-672X", "clpid": "Fox-D-B" }, { "family_name": "Kirkman", "given_name": "D.", "clpid": "Kirkman-D" }, { "family_name": "Li", "given_name": "J. Z.", "clpid": "Li-J-Z" }, { "family_name": "Li", "given_name": "T. P.", "clpid": "Li-T-P" }, { "family_name": "Malkan", "given_name": "M. A.", "orcid": "0000-0001-6919-1237", "clpid": "Malkan-M-A" }, { "family_name": "Moore", "given_name": "M. R.", "clpid": "Moore-M-R" }, { "family_name": "Reitzel", "given_name": "D. B.", "clpid": "Reitzel-David-B" }, { "family_name": "Rich", "given_name": "R. M.", "orcid": "0000-0003-0427-8387", "clpid": "Rich-R-M" }, { "family_name": "Serduke", "given_name": "F. J. D.", "clpid": "Serduke-F-J-D" }, { "family_name": "Shang", "given_name": "R. C.", "clpid": "Shang-R-C" }, { "family_name": "Steele", "given_name": "T. N.", "clpid": "Steele-T-N" }, { "family_name": "Swift", "given_name": "B. J.", "clpid": "Swift-B-J" }, { "family_name": "Tao", "given_name": "C.", "clpid": "Tao-C" }, { "family_name": "Wong", "given_name": "D. S.", "clpid": "Wong-Diane-S" }, { "family_name": "Zhang", "given_name": "S. N.", "clpid": "Zhang-S-Nan" } ], "abstract": "We present extensive photometry at ultraviolet (UV), optical, and near-infrared (NIR) wavelengths, as well as dense sampling of optical spectra, for the normal Type Ia supernova (SN Ia) 2005cf. The optical photometry, performed at eight different telescopes, shows a 1\u03c3 scatter of \u227e0.03 mag after proper corrections for the instrument responses. From the well-sampled light curves, we find that SN 2005cf reached a B-band maximum at 13.63 \u00b1 0.02 mag, with an observed luminosity decline rate \u0394m _(15)(B) = 1.05 \u00b1 0.03 mag. The correlations between the decline rate and various color indexes, recalibrated on the basis of an expanded SN Ia sample, yield a consistent estimate for the host-galaxy reddening of SN 2005cf, E(B \u2013 V)_(host) = 0.10 \u00b1 0.03 mag. The UV photometry was obtained with the Hubble Space Telescope and the Swift Ultraviolet/Optical Telescope, and the results match each other to within 0.1-0.2 mag. The UV light curves show similar evolution to the broadband U, with an exception in the 2000-2500 \u00c5 spectral range (corresponding to the F220W/uvm2 filters), where the light curve appears broader and much fainter than that on either side (likely owing to the intrinsic spectral evolution). Combining the UV data with the ground-based optical and NIR data, we establish the generic UV-optical-NIR bolometric light curve for SN 2005cf and derive the bolometric corrections in the absence of UV and/or NIR data. The overall spectral evolution of SN 2005cf is similar to that of a normal SN Ia, but with variety in the strength and profile of the main feature lines. The spectra at early times displayed strong, high-velocity (HV) features in the Ca II H&K doublet and NIR triplet, which were distinctly detached from the photosphere (v \u2248 10,000 km s^(\u20131)) at a velocity ranging from 20,000 to 25,000 km s^(\u20131). One interesting feature is the flat-bottomed absorption observed near 6000 \u00c5 in the earliest spectrum, which rapidly evolved into a triangular shape and then became a normal Si II \u03bb6355 absorption profile at about one week before maximum brightness. This premaximum spectral evolution is perhaps due to the blending of the Si II\u03bb6355 at photospheric velocity and another HV absorption component (e.g., an Si II shell at a velocity ~18,000 km s^(\u20131)) in the outer ejecta, and may be common in other normal SNe Ia. The possible origin of the HV absorption features is briefly discussed.", "doi": "10.1088/0004-637X/697/1/380", "issn": "0004-637X", "publisher": "American Astronomical Society", "publication": "Astrophysical Journal", "publication_date": "2009-05-20", "series_number": "1", "volume": "697", "issue": "1", "pages": "380-408" }, { "id": "authors:p9d7h-ada39", "collection": "authors", "collection_id": "p9d7h-ada39", "cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20090408-095231425", "type": "article", "title": "GALEX spectroscopy of SN 2005ay suggests ultraviolet spectral uniformity among type II-P supernovae", "author": [ { "family_name": "Gal-Yam", "given_name": "A.", "orcid": "0000-0002-3653-5598", "clpid": "Gal-Yam-A" }, { "family_name": "Bufano", "given_name": "F.", "clpid": "Bufano-F" }, { "family_name": "Barlow", "given_name": "T. A.", "clpid": "Barlow-T-A" }, { "family_name": "Baron", "given_name": "E.", "clpid": "Baron-E" }, { "family_name": "Benetti", "given_name": "S.", "orcid": "0000-0002-3256-0016", "clpid": "Benetti-S" }, { "family_name": "Cappellaro", "given_name": "E.", "orcid": "0000-0001-5008-8619", "clpid": "Cappellaro-E" }, { "family_name": "Challis", "given_name": "P. J.", "clpid": "Challis-P-J" }, { "family_name": "Ellis", "given_name": "R. S.", "orcid": "0000-0001-7782-7071", "clpid": "Ellis-R-S" }, { "family_name": "Filippenko", "given_name": "A. V.", "orcid": "0000-0003-3460-0103", "clpid": "Filippenko-A-V" }, { "family_name": "Foley", "given_name": "R. J.", "clpid": "Foley-R-J" }, { "family_name": "Fox", "given_name": "D. B.", "orcid": "0000-0002-3714-672X", "clpid": "Fox-D-B" }, { "family_name": "Hicken", "given_name": "M.", "clpid": "Hicken-M" }, { "family_name": "Kirshner", "given_name": "R. P.", "orcid": "0000-0002-1966-3942", "clpid": "Kirshner-Robert-P" }, { "family_name": "Leonard", "given_name": "D. C.", "clpid": "Leonard-D-C" }, { "family_name": "Li", "given_name": "W.", "clpid": "Li-Weidong" }, { "family_name": "Maoz", "given_name": "D.", "clpid": "Maoz-D" }, { "family_name": "Matheson", "given_name": "T.", "orcid": "0000-0001-6685-0479", "clpid": "Matheson-T" }, { "family_name": "Mazzali", "given_name": "P. A.", "orcid": "0000-0001-6876-8284", "clpid": "Mazzali-P-A" }, { "family_name": "Modjaz", "given_name": "M.", "orcid": "0000-0001-7132-0333", "clpid": "Modjaz-M" }, { "family_name": "Nomoto", "given_name": "K.", "orcid": "0000-0001-9553-0685", "clpid": "Nomoto-Ken'ichi" }, { "family_name": "Ofek", "given_name": "E. O.", "orcid": "0000-0002-6786-8774", "clpid": "Ofek-E-O" }, { "family_name": "Simon", "given_name": "J. D.", "clpid": "Simon-J-D" }, { "family_name": "Small", "given_name": "T. A.", "clpid": "Small-T-A" }, { "family_name": "Smith", "given_name": "G. P.", "orcid": "0000-0003-4494-8277", "clpid": "Smith-Graham-P" }, { "family_name": "Turatto", "given_name": "M.", "clpid": "Turatto-M" }, { "family_name": "van Dyk", "given_name": "S. D.", "orcid": "0000-0001-9038-9950", "clpid": "Van-Dyk-S-D" }, { "family_name": "Zampieri", "given_name": "L.", "clpid": "Zampieri-L" } ], "abstract": "We present the initial results from our GALEX program designed to obtain ultraviolet (UV) spectra of nearby core-collapse supernovae (SNe). Our first target, SN 2005ay in the nearby galaxy NGC 3938, is a typical member of the SN II-P subclass. Our spectra show remarkable similarity to those of the prototypical Type II-P SN 1999em, and resemble also Swift observations of the recent Type II-P SN 2005cs. Taken together, the observations of these three events trace the UV spectral evolution of SNe II-P during the first month after explosion, as required in order to interpret optical observations of high-redshift SNe II-P, and to derive cross-filter K-corrections. While still highly preliminary, the apparent UV homogeneity of SNe II-P bodes well for the use of these events as cosmological probes at high redshift.", "doi": "10.1086/592744", "issn": "0004-637X", "publisher": "American Astronomical Society", "publication": "Astrophysical Journal", "publication_date": "2008-10-01", "series_number": "2", "volume": "685", "issue": "2", "pages": "L117-L120" }, { "id": "authors:1574m-pxk04", "collection": "authors", "collection_id": "1574m-pxk04", "cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20090407-112718983", "type": "article", "title": "Optical spectroscopy of type Ia supernovae", "author": [ { "family_name": "Matheson", "given_name": "T.", "orcid": "0000-0001-6685-0479", "clpid": "Matheson-T" }, { "family_name": "Kirshner", "given_name": "R. P.", "orcid": "0000-0002-1966-3942", "clpid": "Kirshner-Robert-P" }, { "family_name": "Challis", "given_name": "P.", "clpid": "Challis-P-J" }, { "family_name": "Jha", "given_name": "S.", "orcid": "0000-0001-8738-6011", "clpid": "Jha-S-W" }, { "family_name": "Garnavich", "given_name": "P. M.", "clpid": "Garnavich-P-M" }, { "family_name": "Berlind", "given_name": "P.", "clpid": "Berlind-P" }, { "family_name": "Calkins", "given_name": "M. L.", "orcid": "0000-0002-2830-5661", "clpid": "Calkins-M-L" }, { "family_name": "Blondin", "given_name": "S.", "clpid": "Blondin-S" }, { "family_name": "Balog", "given_name": "Z.", "clpid": "Balog-Z" }, { "family_name": "Bragg", "given_name": "A. E.", "clpid": "Bragg-A-E" }, { "family_name": "Caldwell", "given_name": "N.", "clpid": "Caldwell-N" }, { "family_name": "Concannon", "given_name": "K. Dendy", "clpid": "Concannon-K-D" }, { "family_name": "Falco", "given_name": "E. E.", "clpid": "Falco-E-E" }, { "family_name": "Graves", "given_name": "G. J. M.", "clpid": "Graves-G-J-M" }, { "family_name": "Huchra", "given_name": "J. P.", "clpid": "Huchra-J-P" }, { "family_name": "Kuraszkiewicz", "given_name": "J.", "clpid": "Kuraszkiewicz-J" }, { "family_name": "Mader", "given_name": "J. A.", "clpid": "Mader-J-A" }, { "family_name": "Mahdavi", "given_name": "A.", "orcid": "0000-0002-8111-3343", "clpid": "Mahdavi-A" }, { "family_name": "Phelps", "given_name": "M.", "clpid": "Phelps-M" }, { "family_name": "Rines", "given_name": "K.", "clpid": "Rines-K-J" }, { "family_name": "Song", "given_name": "I.", "orcid": "0000-0002-5815-7372", "clpid": "Song-Inseok" }, { "family_name": "Wilkes", "given_name": "B. J.", "orcid": "0000-0003-1809-2364", "clpid": "Wilkes-B-J" } ], "abstract": "We present 432 low-dispersion optical spectra of 32 Type Ia supernovae (SNe Ia) that also have well-calibrated light curves. The coverage ranges from 6 epochs to 36 epochs of spectroscopy. Most of the data were obtained with the 1.5 m Tillinghast telescope at the F. L. Whipple Observatory with typical wavelength coverage of 3700-7400 \u00c5 and a resolution of ~7 \u00c5. The earliest spectra are 13 days before B-band maximum; two-thirds of the SNe were observed before maximum brightness. Coverage for some SNe continues almost to the nebular phase. The consistency of the method of observation and the technique of reduction makes this an ideal data set for studying the spectroscopic diversity of SNe Ia.", "doi": "10.1088/0004-6256/135/4/1598", "issn": "0004-6256", "publisher": "American Astronomical Society", "publication": "Astronomical Journal", "publication_date": "2008-04", "series_number": "4", "volume": "135", "issue": "4", "pages": "1598-1615" }, { "id": "authors:bxkha-jpf43", "collection": "authors", "collection_id": "bxkha-jpf43", "cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20090526-144731613", "type": "article", "title": "Swift and Chandra detections of supernova 2006jc: evidence for interaction of the supernova shock with a circumstellar shell", "author": [ { "family_name": "Immler", "given_name": "S.", "clpid": "Immler-S" }, { "family_name": "Modjaz", "given_name": "M.", "orcid": "0000-0001-7132-0333", "clpid": "Modjaz-M" }, { "family_name": "Landsman", "given_name": "W.", "clpid": "Landsman-W" }, { "family_name": "Bufano", "given_name": "F.", "clpid": "Bufano-F" }, { "family_name": "Brown", "given_name": "P. J.", "clpid": "Brown-P-J" }, { "family_name": "Milne", "given_name": "P.", "orcid": "0000-0002-0370-157X", "clpid": "Milne-P-A" }, { "family_name": "Dessart", "given_name": "L.", "clpid": "Dessart-L" }, { "family_name": "Holland", "given_name": "S. T.", "clpid": "Holland-S-T" }, { "family_name": "Koss", "given_name": "M.", "orcid": "0000-0002-7998-9581", "clpid": "Koss-M-J" }, { "family_name": "Pooley", "given_name": "D.", "orcid": "0000-0003-4897-7833", "clpid": "Pooley-D" }, { "family_name": "Kirshner", "given_name": "R. P.", "orcid": "0000-0002-1966-3942", "clpid": "Kirshner-Robert-P" }, { "family_name": "Filippenko", "given_name": "A. V.", "orcid": "0000-0003-3460-0103", "clpid": "Filippenko-A-V" }, { "family_name": "Panagia", "given_name": "N.", "clpid": "Panagia-N" }, { "family_name": "Chevalier", "given_name": "R. A.", "clpid": "Chevalier-R-A" }, { "family_name": "Mazzali", "given_name": "P. A.", "orcid": "0000-0001-6876-8284", "clpid": "Mazzali-P-A" }, { "family_name": "Gehrels", "given_name": "N.", "clpid": "Gehrels-N" }, { "family_name": "Petre", "given_name": "R.", "clpid": "Petre-R" }, { "family_name": "Burrows", "given_name": "D. N.", "clpid": "Burrows-D-N" }, { "family_name": "Nousek", "given_name": "J. A.", "clpid": "Nousek-J-A" }, { "family_name": "Roming", "given_name": "P. W. A.", "clpid": "Roming-P-W-A" }, { "family_name": "Pian", "given_name": "E.", "clpid": "Pian-E" }, { "family_name": "Soderberg", "given_name": "A. M.", "clpid": "Soderberg-A-M" }, { "family_name": "Greiner", "given_name": "J.", "clpid": "Greiner-J" } ], "abstract": "The peculiar Type Ib supernova (SN) 2006jc has been observed with the UV/Optical Telescope (UVOT) and X-Ray Telescope (XRT) on board the Swift observatory over a period of 19-183 days after the explosion. Signatures of interaction of the outgoing SN shock with dense circumstellar material (CSM) are detected, such as strong X-ray emission (L_(0.2\u201310) > 10^39 erg s^\u22121) and the presence of Mg II 2800 \u00c5 line emission visible in the UV spectra. In combination with a Chandra observation obtained on day 40 after the explosion, the X-ray light curve is constructed, which shows a unique rise of the X-ray emission by a factor of ~5 over a period of ~4 months, followed by a rapid decline. We interpret the unique X-ray and UV properties as a result of the SN shock interacting with a shell of material that was deposited by an outburst of the SN progenitor 2 years prior to the explosion. Our results are consistent with the explosion of a Wolf-Rayet star that underwent an episodic mass ejection qualitatively similar to those of luminous blue variable stars prior to its explosion. This led to the formation of a dense (~10^7 cm^\u22123) shell at a distance of ~10^16 cm from the site of the explosion, which expands with the WR wind at a velocity of 1300 \u00b1 300 km s^\u22121.", "doi": "10.1086/529373", "issn": "2041-8205", "publisher": "American Astronomical Society", "publication": "Astrophysical Journal Letters", "publication_date": "2008-02-20", "series_number": "2", "volume": "674", "issue": "2", "pages": "L85-L88" }, { "id": "authors:hx8jr-2rg12", "collection": "authors", "collection_id": "hx8jr-2rg12", "cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20090430-084411499", "type": "article", "title": "The broad-lined type Ic supernova 2003jd", "author": [ { "family_name": "Valenti", "given_name": "S.", "orcid": "0000-0001-8818-0795", "clpid": "Valenti-S" }, { "family_name": "Benetti", "given_name": "S.", "orcid": "0000-0002-3256-0016", "clpid": "Benetti-S" }, { "family_name": "Cappellaro", "given_name": "E.", "orcid": "0000-0001-5008-8619", "clpid": "Cappellaro-E" }, { "family_name": "Patat", "given_name": "F.", "orcid": "0000-0002-0537-3573", "clpid": "Patat-F" }, { "family_name": "Mazzali", "given_name": "P.", "orcid": "0000-0001-6876-8284", "clpid": "Mazzali-P-A" }, { "family_name": "Turatto", "given_name": "M.", "clpid": "Turatto-M" }, { "family_name": "Hurley", "given_name": "K.", "clpid": "Hurley-K-C" }, { "family_name": "Maeda", "given_name": "K.", "clpid": "Maeda-K" }, { "family_name": "Gal-Yam", "given_name": "A.", "orcid": "0000-0002-3653-5598", "clpid": "Gal-Yam-A" }, { "family_name": "Foley", "given_name": "R. J.", "clpid": "Foley-R-J" }, { "family_name": "Filippenko", "given_name": "A. V.", "orcid": "0000-0003-3460-0103", "clpid": "Filippenko-A-V" }, { "family_name": "Pastorello", "given_name": "A.", "clpid": "Pastorello-A" }, { "family_name": "Challis", "given_name": "P.", "clpid": "Challis-P-J" }, { "family_name": "Frontera", "given_name": "F.", "clpid": "Frontera-F" }, { "family_name": "Harutyunyan", "given_name": "A.", "clpid": "Harutyunyan-A" }, { "family_name": "Iye", "given_name": "M.", "clpid": "Iye-Masanori" }, { "family_name": "Kawabata", "given_name": "K.", "clpid": "Kawabata-Koji-S" }, { "family_name": "Kirshner", "given_name": "R. P.", "orcid": "0000-0002-1966-3942", "clpid": "Kirshner-Robert-P" }, { "family_name": "Li", "given_name": "W.", "clpid": "Li-W" }, { "family_name": "Lipkin", "given_name": "Y. M.", "clpid": "Lipkin-Y-M" }, { "family_name": "Matheson", "given_name": "T.", "orcid": "0000-0001-6685-0479", "clpid": "Matheson-T" }, { "family_name": "Nomoto", "given_name": "K.", "orcid": "0000-0001-9553-0685", "clpid": "Nomoto-Ken'ichi" }, { "family_name": "Ofek", "given_name": "E. O.", "orcid": "0000-0002-6786-8774", "clpid": "Ofek-E-O" }, { "family_name": "Ohyama", "given_name": "Y.", "orcid": "0000-0001-9490-3582", "clpid": "Ohyama-Youichi" }, { "family_name": "Pian", "given_name": "E.", "clpid": "Pian-E" }, { "family_name": "Poznanski", "given_name": "D.", "clpid": "Poznanski-D" }, { "family_name": "Salvo", "given_name": "M.", "clpid": "Salvo-M" }, { "family_name": "Sauer", "given_name": "D. N.", "clpid": "Sauer-D-N" }, { "family_name": "Schmidt", "given_name": "B. P.", "orcid": "0000-0001-6589-1287", "clpid": "Schmidt-B-P" }, { "family_name": "Soderberg", "given_name": "A.", "clpid": "Soderberg-A-M" }, { "family_name": "Zampieri", "given_name": "L.", "clpid": "Zampieri-L" } ], "abstract": "The results of a worldwide coordinated observational campaign on the broad-lined Type Ic supernova (SN Ic) 2003jd are presented. In total, 74 photometric data points and 26 spectra were collected using 11 different telescopes. SN 2003jd is one of the most luminous SN Ic ever observed. A comparison with other Type Ic supernovae (SNe Ic) confirms that SN 2003jd represents an intermediate case between broad-line events (2002ap, 2006aj) and highly energetic SNe (1997ef, 1998bw, 2003dh, 2003lw), with an ejected mass of M_ej= 3.0 \u00b1 1 M\u2299 and a kinetic energy of E_k(tot) = 7^+3_\u22122 \u00d7 10^51 erg. SN 2003jd is similar to SN 1998bw in terms of overall luminosity, but it is closer to SNe 2006aj and 2002ap in terms of light-curve shape and spectral evolution. The comparison with other SNe Ic suggests that the V-band light curves of SNe Ic can be partially homogenized by introducing a time-stretch factor. Finally, because of the similarity of SN 2003jd to the SN 2006aj/XRF 060218 event, we discuss the possible connection of SN 2003jd with a gamma-ray burst (GRB).", "doi": "10.1111/j.1365-2966.2007.12647.x", "issn": "0035-8711", "publisher": "Royal Astronomical Society", "publication": "Monthly Notices of the Royal Astronomical Society", "publication_date": "2008-02-01", "series_number": "4", "volume": "383", "issue": "4", "pages": "1485-1500" } ]