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217th Meeting of the American Astronomical Society with the Historical Astronomy, Seattle, WA : États-Unis (2010)
Analysis of the Type Ia Supernova SNF20080514-002
T. Rollin, G. Aldering, C. Aragon, P. Antilogus1, C. Baltay, S. Bongard1, P. Brown, C. Buton, A. Canto1, M. Childress, N. Chotard2, Y. Copin2, H. Fakhouri, E. Gangler2, M. Kerschhaggl, M. Kowalski, E. Hsiao, S. Loken, P. Milne, P. Nugent, K. Paech, R. Pain1, E. Pecontal3, R. Pereira2, S. Perlmutter, D. Rabinowitz, K. Runge, R. Scalzo, G. Smadja2, C. Tao4, C. Wu1

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.
1 :  LPNHE - Laboratoire de Physique Nucléaire et de Hautes Énergies
2 :  IPNL - Institut de Physique Nucléaire de Lyon
3 :  CRAL - Centre de Recherche Astrophysique de Lyon
4 :  CPPM - Centre de Physique des Particules de Marseille
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