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The Supernova Type Ia Rate Evolution with SNLS

Abstract : 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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Submitted on : Wednesday, February 7, 2007 - 3:24:49 PM
Last modification on : Wednesday, September 23, 2020 - 4:36:56 AM

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J. D. Neill, M. Sullivan, D. Balam, C. J. Pritchet, D. A. Howell, et al.. The Supernova Type Ia Rate Evolution with SNLS. International Astronomy Meeting: The Multicolored Landscape Of Compact Objects And Their Explosive Origins: Theory Versus Observations, Jun 2006, Cefalu, Sicile, Italy. pp.421-424, ⟨10.1063/1.2774890⟩. ⟨in2p3-00129460⟩



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