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A search for new candidate super-chandrasekhar-mass type Ia supernovae in the nearby supernova factory data set

Scalzo, Richard; Aldering, G; Antilogus, P; Aragon, C; Bailey, S; Baltay, C; Bongard, S; Buton, C; Canto, A; Cellier-Holzem, F; Childress, M

Description

We present optical photometry and spectroscopy of five Type Ia supernovae discovered by the Nearby Supernova Factory selected to be spectroscopic analogs of the candidate super-Chandrasekhar-mass events SN2003fg and SN2007if. Their spectra are characterized by hot, highly ionized photospheres near maximum light, for which SN1991T supplies the best phase coverage among available close spectral templates. Like SN2007if, these supernovae are overluminous (-19.5 < M V < -20) and the velocity of the...[Show more]

CollectionsANU Research Publications
Date published: 2012
Type: Journal article
URI: http://hdl.handle.net/1885/65959
Source: Astrophysical Journal, The
DOI: 10.1088/0004-637X/757/1/12

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