Details

Autor(en) / Beteiligte

• Graham, M. L
• Pritchet, C. J
• Sullivan, M
• Howell, D. A
• Gwyn, S. D. J
• Astier, P
• Balland, C
• Basa, S
• Carlberg, R. G
• Conley, A
• Fouchez, D
• Guy, J
• Hardin, D
• Hook, I. M
• Pain, R
• Perrett, K
• Regnault, N
• Rich, J
• Balam, D
• Fabbro, S
• Hsiao, E. Y
• Mourao, A
• Palanque-Delabrouille, N
• Perlmutter, S
• Ruhlman-Kleider, V
• Suzuki, N
• Fakhouri, H. K
• Walker, E. S

Titel

The Type Ia Supernova Rate in Radio and Infrared Galaxies from the Canada-France-Hawaii Telescope Supernova Legacy Survey

Ist Teil von

• The Astronomical journal, 2010-02, Vol.139 (2), p.594-605

Ort / Verlag

IOP Publishing

Erscheinungsjahr

2010

Quelle

EZB Electronic Journals Library

Beschreibungen/Notizen

• We have combined the large SN Ia database of the Canada-France-Hawaii Telescope Supernova Legacy Survey and catalogs of galaxies with photometric redshifts, Very Large Array 1.4 GHz radio sources, and Spitzer infrared sources. We present eight SNe Ia in early-type host galaxies which have counterparts in the radio and infrared source catalogs. We find the SN Ia rate in subsets of radio and infrared early-type galaxies is ~1-5 times the rate in all early-type galaxies, and that any enhancement is always 2 Delta *s. Rates in these subsets are consistent with predictions of the two-component 'A+B' SN Ia rate model. Since infrared properties of radio SN Ia hosts indicate dust-obscured star formation, we incorporate infrared star formation rates into the 'A+B' model. We also show the properties of SNe Ia in radio and infrared galaxies suggest the hosts contain dust and support a continuum of delay time distributions (DTDs) for SNe Ia, although other DTDs cannot be ruled out based on our data.