Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21331201g&link_type=abstract
American Astronomical Society, AAS Meeting #213, #312.01; Bulletin of the American Astronomical Society, Vol. 41, p.288
Astronomy and Astrophysics
Astronomy
Scientific paper
Previous surveys found the type Ia supernova (SN Ia) rate per unit mass in low redshift radio-loud early-type galaxies to be a factor of 2 to 7 higher than in radio-quiet early-type galaxies. The large, intermediate redshift SN\,Ia database compiled by the Canada-France-Hawaii Telescope Supernovae Legacy Survey (CFHT SNLS) has now been combined with photometric redshift catalogs, VLA 1.4 GHz radio catalogs (VLA-VIRMOS and COSMOS surveys), and Spitzer infrared catalogs (SWIRE and S-COSMOS). We identify the radio loud galaxy population and show that our finding five SNLS SN Ia hosts in this subset to be consistent with both expectations of the standard two-component SN Ia rate model and an enhanced rate in radio-loud galaxies. The infrared properties of radio loud SN Ia hosts indicate some dust-obscured star formation, and for the first time we incorporate an "A+B" model derived from infrared host properties in our discussion.
Graham Melissa
Pritchet Chris
Supernova Legacy Survey CFHT
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