THE TYPE Ia SUPERNOVA RATE IN RADIO AND INFRARED GALAXIES FROM THE CANADA-FRANCE-HAWAII TELESCOPE SUPERNOVA LEGACY SURVEY
- Department of Physics and Astronomy, University of Victoria, P.O. Box 3055 STN CSC, Victoria BC V8T 1M8 (Canada)
- University of Oxford Astrophysics, Denys Wilkinson Building, Keble Road, Oxford, OX1 3RH (United Kingdom)
- University of California at Santa Barbara, Santa Barbara CA 93106-9530 (United States)
- Canadian Astronomy Data Centre, NRC Herzberg Institute for Astrophysics, 5071 West Saanich Road, Victoria BC V9E 2E7 (Canada)
- LPNHE, CNRS-IN2P3 and Universites Paris VI and VII, 4 place Jussieu, 75252 Paris Cedex 05 (France)
- LAM, Pole de l'Etoile Site de Chateau-Gombert, 38 rue Frederic Joliot-Curie, 13388 Marseille Cedex 13 (France)
- Department of Astronomy and Astrophysics, University of Toronto, 60 St. George Street, Toronto ON M5S 3H8 (Canada)
- Department of Astrophysical and Planetary Sciences, University of Colorado, Boulder, CO 80309-0391 (United States)
- CPPM, CNRS-IN2P3 and Universite Aix-Marseille II, Case 907, 13288 Marseille Cedex 9 (France)
- CEA/Saclay, DSM/Irfu/Spp, 91191 Gif-sur-Yvette Cedex (France)
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 {approx}1-5 times the rate in all early-type galaxies, and that any enhancement is always {approx}<2{sigma}. 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.
- OSTI ID:
- 21301360
- Journal Information:
- Astronomical Journal (New York, N.Y. Online), Vol. 139, Issue 2; Other Information: DOI: 10.1088/0004-6256/139/2/594; Country of input: International Atomic Energy Agency (IAEA); ISSN 1538-3881
- Country of Publication:
- United States
- Language:
- English
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