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Nearby supernova factory observations of SN 2007if: First total mass measurement of a super-chandrasekhar-mass progenitor

Scalzo, Richard; Aldering, G; Antilogus, P; Aragon, C; Bailey, C; Baltay, C; Bongard, S; Buton, C; Childress, Michael; Chotard, N; Copin, Y; Fakhouri, H K; Pereira, R

Description

We present photometric and spectroscopic observations of SN 2007if, an overluminous (MV = -20.4), red (B - V = 0.16 at B-band maximum), slow-rising (t rise = 24 days) type Ia supernova (SN Ia) in a very faint (Mg = -14.10) host galaxy. A spectrum at 5 days past B-band maximum light is a direct match to the super-Chandrasekhar-mass candidate SN Ia 2003fg, showing Si II and C II at 9000 km s-1. A high signal-to-noise co-addition of the SN spectral time series reveals no Na I D absorption,...[Show more]

CollectionsANU Research Publications
Date published: 2010
Type: Journal article
URI: http://hdl.handle.net/1885/79211
Source: Astrophysical Journal, The
DOI: 10.1088/0004-637X/713/2/1073

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