The Supernova Type Ia Rate Evolution with SNLS

Details The Supernova Type Ia Rate Evolution with SNLS The Supernova Type Ia Rate Evolution with SNLS

2007-01-06

arxiv.org/abs/astro-ph/0701161v1

AIPConf.Proc.924:421-424,2007

Astronomy and Astrophysics

Astrophysics

6 pages, 1 figure, To appear in "The Multicoloured Landscape of Compact Objects and their Explosive Progenitors: Theory vs Obs

Scientific paper

10.1063/1.2774890

We present a progress report on a project to derive the evolution of the volumetric supernova Type Ia rate from the Supernova Legacy Survey. Our preliminary estimate of the rate evolution divides the sample from Neill et al. (2006) into two redshift bins: 0.2 < z < 0.4, and 0.4 < z < 0.6. We extend this by adding a bin from the sample analyzed in Sullivan et al. (2006) in the range 0.6 < z < 0.75 from the same time period. We compare the derived trend with previously published rates and a supernova Type Ia production model having two components: one component associated closely with star formation and an additional component associated with host galaxy mass. Our observed trend is consistent with this model, which predicts a rising SN Ia rate out to at least z=2.

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