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Hicken, M; Garnavich, P. M; Prieto, J. L; Blondin, S; DePoy, D. L; Kirshner, R. P; Parrent, J
The Astrophysical journal, 11/2007, Volume: 669, Issue: 1Journal Article
Spectra and light curves of SN 2006gz show the strongest signature of unburned carbon and one of the slowest fading light curves ever seen in a Type Ia event Delta m sub(15)(B) = 0.69 plus or minus 0.04. The early-time Si II velocity is low, implying it was slowed by an envelope of unburned material. Our best estimate of the luminosity implies M sub(v) = -19.74 and the production of similar to 1.2 M unk of super(56)Ni. This suggests a super-Chandrasekhar mass progenitor. A double degenerate merger is consistent with these observations.
