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Analysis of the Type Ia Supernova SNF20080514-002

Abstract : We discuss the comprehensive analysis of spectrophotometric time-series observations of the Type Ia supernova SNF20080514-002. The data consist of 20 SuperNova Integral Field Spectrograph (SNIFS) spectra sampled over 50 days, commencing at 10 days before peak brightness. The analysis is part of a systematic effort to map out the time-dependent manifestation of ion species in Type Ia supernova spectra in detail. In general, the SN is relatively normal, but it possesses some noteworthy characteristics we explore in detail. C II footprints are detected in the spectra leading up to maximum light, suggesting that unburned material may be mixed with intermediate mass burning products. Though the light-curve qualifies as a moderately fast-decliner (s=0.87), its UV-optical colors are unusually blue. We attempt to place these findings into the context of supernova explosion models, and comment on whether the occurrence of carbon in lower-luminosity Type Ia supernovae favors any particular model or not.
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http://hal.in2p3.fr/in2p3-00611463
Contributor : Sylvie Flores <>
Submitted on : Tuesday, July 26, 2011 - 2:02:22 PM
Last modification on : Friday, April 10, 2020 - 5:23:26 PM

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T. Rollin, G. Aldering, C. Aragon, P. Antilogus, C. Baltay, et al.. Analysis of the Type Ia Supernova SNF20080514-002. 217th Meeting of the American Astronomical Society with the Historical Astronomy, Jan 2011, Seattle, WA, United States. pp.30801. ⟨in2p3-00611463⟩

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