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Constraining Cosmic Evolution of Type Ia Supernovae

Foley, Ryan; Filippenko, Alexei; Aguilera, Claudio; Becker, Andrew C; Blondin, Stephanie; Challis, Peter M; Clocchiatti, Alejandro; Covarrubias, Ricardo; Davis, T M; Garnavich, Peter M; Jha, Saurabh; Schmidt, Brian


We present a large-scale effort of creating composite spectra of high-redshift SNe la and comparing them to low-redshift counterparts in an attempt to understand possible cosmic evolution of SNe la, which has major implications for studies of dark energy. Through the ESSENCE project, we have obtained 107 spectra of 88 high-redshift SNe la with excellent light-curve information. In addition, we have obtained 397 spectra of low-redshift SNe la through a multiple-decade effort at the Lick and Keck...[Show more]

CollectionsANU Research Publications
Date published: 2008
Type: Journal article
Source: Astrophysical Journal, The
DOI: 10.1086/589612
Access Rights: Open Access


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