The Fast Declining Type Ia Supernova 2003Gs, And Evidence For A Significant Dispersion In Near-Infrared Absolute Magnitudes Of Fast Decliners At Maximum Light

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dc.contributor.utaustinauthorMarion, G. H.en_US
dc.creatorKrisciunas, Kevinen_US
dc.creatorMarion, G. H.en_US
dc.creatorSuntzeff, Nicholas B.en_US
dc.creatorBlanc, Guillaumeen_US
dc.creatorBufano, Filomenaen_US
dc.creatorCandia, Pabloen_US
dc.creatorCartier, Regisen_US
dc.creatorElias-Rosa, Nancyen_US
dc.creatorEspinoza, Juanen_US
dc.creatorGonzalez, Daviden_US
dc.creatorGonzalez, Luisen_US
dc.creatorGonzalez, Serioen_US
dc.creatorGooding, Samuel D.en_US
dc.creatorHamuy, Marioen_US
dc.creatorKnox, Ethan A.en_US
dc.creatorMilne, Peter A.en_US
dc.creatorMorrell, Nidiaen_US
dc.creatorPhillips, Mark M.en_US
dc.creatorStritzinger, Maximillianen_US
dc.creatorThomas-Osip, Joannaen_US
dc.date.accessioned2016-04-22T19:43:10Z
dc.date.available2016-04-22T19:43:10Z
dc.date.issued2009-12en
dc.description.abstractWe obtained optical photometry of SN 2003gs on 49 nights, from 2 to 494 days after T(B(max)). We also obtained near-IR photometry on 21 nights. SN 2003gs was the first fast declining Type Ia SN that has been well observed since SN 1999by. While it was subluminous in optical bands compared to more slowly declining Type Ia SNe, it was not subluminous at maximum light in the near-IR bands. There appears to be a bimodal distribution in the near-IR absolute magnitudes of Type Ia SNe at maximum light. Those that peak in the near-IR after T(B(max)) are subluminous in the all bands. Those that peak in the near-IR prior to T(B(max)), such as SN 2003gs, have effectively the same near-IR absolute magnitudes at maximum light regardless of the decline rate Delta m(15)(B). Near-IR spectral evidence suggests that opacities in the outer layers of SN 2003gs are reduced much earlier than for normal Type Ia SNe. That may allow gamma rays that power the luminosity to escape more rapidly and accelerate the decline rate. This conclusion is consistent with the photometric behavior of SN 2003gs in the IR, which indicates a faster than normal decline from approximately normal peak brightness.en_US
dc.description.departmentAstronomyen_US
dc.description.sponsorshipNational Science Foundationen_US
dc.description.sponsorshipFONDECYT 1060808en_US
dc.description.sponsorshipMillennium Center for Supernova P06-045-Fen_US
dc.description.sponsorshipCentro de Astrofisica FONDAP 15010003en_US
dc.description.sponsorshipCenter of Excellence in Astrophysics and Associated Technologies PFB 06en_US
dc.description.sponsorshipCONICYT D-2108082en_US
dc.identifierdoi:10.15781/T2448Q
dc.identifier.citationKrisciunas, Kevin, G. H. Marion, Nicholas B. Suntzeff, Guillaume Blanc, Filomena Bufano, Pablo Candia, Regis Cartier et al. >The Fast Declining Type Ia Supernova 2003gs, and Evidence for a Significant Dispersion in Near-Infrared Absolute Magnitudes of Fast Decliners at Maximum Light.> The Astronomical Journal, Vol. 138, No. 6 (Dec., 2009): 1584.en_US
dc.identifier.doi10.1088/0004-6256/138/6/1584en_US
dc.identifier.issn0004-6256en_US
dc.identifier.urihttp://hdl.handle.net/2152/34276
dc.language.isoEnglishen_US
dc.relation.ispartofserialAstronomical Journalen_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: individual (sn 2003gs)en_US
dc.subjecttechniques: photometricen_US
dc.subjectsurface brightness fluctuationsen_US
dc.subjectoptical spectroscopyen_US
dc.subjectesc observationsen_US
dc.subjecthubble constanten_US
dc.subjectstandard starsen_US
dc.subjectsn 2005cfen_US
dc.subjectphotometryen_US
dc.subjectspectraen_US
dc.subjectcurvesen_US
dc.subjectextinctionen_US
dc.subjectastronomy & astrophysicsen_US
dc.titleThe Fast Declining Type Ia Supernova 2003Gs, And Evidence For A Significant Dispersion In Near-Infrared Absolute Magnitudes Of Fast Decliners At Maximum Lighten_US
dc.typeArticleen_US

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