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Cosmological Implications of the Second Parameter of Type Ia Supernovae

Abstract:

Theoretical models predict that the initial metallicity of the progenitor of a Type Ia supernova (SN Ia) affects the peak of the supernova light curve. This can cause a deviation from the standard light curve calibration employed when using SNe Ia as standardizable distance candles and, if there is a systematic evolution of the metallicity of SN Ia progenitors, could affect the determination of cosmological parameters. Here we show that this metallicity effect can be substantially larger than...

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Institution:
University of Oxford
Department:
Oxford, MPLS, Physics, Astrophysics
Mazzali, PA More by this author
Lesaffre, P More by this author
Forster, F More by this author
Publication date:
2006-08-15
URN:
uuid:af156f65-00ab-4a0a-bfc7-598bf80bd1e6
Source identifiers:
205432
Local pid:
pubs:205432
Keywords:

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