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dc.creatorHayden, Brian T.en_US
dc.creatorGarnavich, Peter M.en_US
dc.creatorKasen, Danielen_US
dc.creatorDilday, Benjaminen_US
dc.creatorFrieman, Joshua A.en_US
dc.creatorJha, Saurabh W.en_US
dc.creatorLampeitl, Huberten_US
dc.creatorNichol, Robert C.en_US
dc.creatorSako, Masaoen_US
dc.creatorSchneider, Donald P.en_US
dc.creatorSmith, Mathewen_US
dc.creatorSollerman, Jesperen_US
dc.creatorWheeler, J. Craigen_US
dc.date.accessioned2016-04-28T19:32:00Z
dc.date.available2016-04-28T19:32:00Z
dc.date.issued2010-10en
dc.identifierdoi:10.15781/T2CR5Z
dc.identifier.citationHayden, Brian T., Peter M. Garnavich, Daniel Kasen, Benjamin Dilday, Joshua A. Frieman, Saurabh W. Jha, Hubert Lampeitl et al. "Single or double degenerate progenitors? Searching for shock emission in the SDSS-II Type Ia supernovae." The Astrophysical Journal, Vol. 722, No. 2 (Oct., 2010): 1691.en_US
dc.identifier.issn0004-637Xen_US
dc.identifier.urihttp://hdl.handle.net/2152/34661
dc.description.abstractFrom the set of nearly 500 spectroscopically confirmed Type Ia supernovae (SNe) and around 10,000 unconfirmed candidates from SDSS-II, we select a subset of 108 confirmed SNe Ia with well-observed early-time light curves to search for signatures from shock interaction of the SN with a companion star. No evidence for shock emission is seen; however, the cadence and photometric noise could hide a weak shock signal. We simulate shocked light curves using SN Ia templates and a simple Gaussian shock model to emulate the noise properties of the SDSS-II sample and estimate the detectability of the shock interaction signal as a function of shock amplitude, shock width, and shock fraction. We find no direct evidence for shock interaction in the rest-frame B-band, but place an upper limit on the shock amplitude at 9% of SN peak flux (M-B > -16.6 mag). If the single degenerate channel dominates type Ia progenitors, this result constrains the companion stars to be less than about 6 M-circle dot on the main sequence and strongly disfavors red giant companions.en_US
dc.description.sponsorshipAlfred P. Sloan Foundationen_US
dc.description.sponsorshipNational Science Foundation 0847157en_US
dc.description.sponsorshipU.S. Department of Energyen_US
dc.description.sponsorshipNational Aeronautics and Space Administrationen_US
dc.description.sponsorshipJapanese Monbukagakushoen_US
dc.description.sponsorshipMax Planck Societyen_US
dc.description.sponsorshipHigher Education Funding Council for Englanden_US
dc.description.sponsorshipAmerican Museum of Natural Historyen_US
dc.description.sponsorshipAstrophysical Institute Potsdamen_US
dc.description.sponsorshipUniversity of Baselen_US
dc.description.sponsorshipUniversity of Cambridgeen_US
dc.description.sponsorshipCase Western Reserve Universityen_US
dc.description.sponsorshipUniversity of Chicagoen_US
dc.description.sponsorshipDrexel Universityen_US
dc.description.sponsorshipFermilaben_US
dc.description.sponsorshipInstitute for Advanced Studyen_US
dc.description.sponsorshipJapan Participation Groupen_US
dc.description.sponsorshipJohns Hopkins Universityen_US
dc.description.sponsorshipJoint Institute for Nuclear Astrophysicsen_US
dc.description.sponsorshipKavli Institute for Particle Astrophysics and Cosmologyen_US
dc.description.sponsorshipKorean Scientist Groupen_US
dc.description.sponsorshipChinese Academy of Sciences (LAMOST)en_US
dc.description.sponsorshipLos Alamos National Laboratoryen_US
dc.description.sponsorshipMax-Planck-Institute for Astronomy (MPIA)en_US
dc.description.sponsorshipMax-Planck-Institute for Astrophysics (MPA)en_US
dc.description.sponsorshipNew Mexico State Universityen_US
dc.description.sponsorshipOhio State Universityen_US
dc.description.sponsorshipUniversity of Pittsburghen_US
dc.description.sponsorshipUniversity of Portsmouthen_US
dc.description.sponsorshipPrinceton Universityen_US
dc.description.sponsorshipUnited States Naval Observatoryen_US
dc.description.sponsorshipUniversity of Washingtonen_US
dc.description.sponsorshipESO New Technology Telescope at La Silla Observatory 77.A-0437, 78.A-0325 79.A-0715en_US
dc.description.sponsorshipW. M. Keck Foundationen_US
dc.description.sponsorshipDOE DE-FG02-08ER41562en_US
dc.language.isoEnglishen_US
dc.relation.ispartofen_US
dc.rightsAdministrative deposit of works to Texas ScholarWorks: This works author(s) is or was a University faculty member, student or staff member; this article is already available through open access or the publisher allows a PDF version of the article to be freely posted online. The library makes the deposit as a matter of fair use (for scholarly, educational, and research purposes), and to preserve the work and further secure public access to the works of the University.en_US
dc.subjectsupernovae: generalen_US
dc.subjectdigital sky surveyen_US
dc.subjectwhite-dwarf modelsen_US
dc.subjectlight-curve shapesen_US
dc.subjecthubbleen_US
dc.subjectdiagramen_US
dc.subjectstaren_US
dc.subjectevolutionen_US
dc.subjectbinariesen_US
dc.subjectimpacten_US
dc.subjectriseen_US
dc.subjecttimeen_US
dc.subjectastronomy & astrophysicsen_US
dc.titleSingle Or Double Degenerate Progenitors? Searching For Shock Emission In The SDSS-II Type Ia Supernovaeen_US
dc.typeArticleen_US
dc.description.departmentAstronomyen_US
dc.identifier.Filename2010_10_single.pdfen_US
dc.rights.restrictionOpenen_US
dc.identifier.doi10.1088/0004-637x/722/2/1691en_US
dc.contributor.utaustinauthorWheeler, J. Craigen_US
dc.relation.ispartofserialAstrophysical Journalen_US


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