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.
Keywords
Cite
@article{arxiv.astro-ph/0701161,
title = {The Supernova Type Ia Rate Evolution with SNLS},
author = {J. D. Neill and M. Sullivan and D. Balam and C. J. Pritchet and D. A. Howell and K. Perrett and P. Astier and E. Aubourg and S. Basa and R. G. Carlberg and A. Conley and S. Fabbro and D. Fouchez and J. Guy and I. Hook and R. Pain and N. Palanque-Delabrouille and N. Regnault and J. Rich and R. Taillet and G. Aldering and P. Antilogus and V. Arsenijevic and C. Balland and S. Baumont and J. Bronder and R. S. Ellis and M. Filiol and A. C. Gonçalves and D. Hardin and M. Kowalski and C. Lidman and V. Lusset and M. Mouchet and A. Mourao and S. Perlmutter and P. Ripoche and D. Schlegel and C. Tao},
journal= {arXiv preprint arXiv:astro-ph/0701161},
year = {2008}
}
Comments
6 pages, 1 figure, To appear in "The Multicoloured Landscape of Compact Objects and their Explosive Progenitors: Theory vs Observations" (Cefalu, Sicily, June 2006). Eds. L. Burderi et al. (New York: AIP)