THE TYPE Ia SUPERNOVA RATE IN RADIO AND INFRARED GALAXIES FROM THE CANADA-FRANCE-HAWAII TELESCOPE SUPERNOVA LEGACY SURVEY

Journal Article · Sun Feb 14 23:00:00 EST 2010 · Astronomical Journal (New York, N.Y. Online)

DOI:https://doi.org/10.1088/0004-6256/139/2/594; COUNTRY OF INPUT: INTERNATIONAL ATOMIC ENERGY AGENCY (IAEA)· OSTI ID:21301360

Graham, M L; Pritchet, C J; Balam, D; Fabbro, S ^[1]; Sullivan, M; Hook, I M ^[2]; Howell, D A ^[3]; Gwyn, S D. J. ^[4]; Astier, P; Balland, C; Guy, J; Hardin, D; Pain, R; Regnault, N ^[5]; Basa, S ^[6]; Carlberg, R G; Perrett, K ^[7]; Conley, A ^[8]; Fouchez, D ^[9]; Rich, J ^[10]

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1. Department of Physics and Astronomy, University of Victoria, P.O. Box 3055 STN CSC, Victoria BC V8T 1M8 (Canada)
2. University of Oxford Astrophysics, Denys Wilkinson Building, Keble Road, Oxford, OX1 3RH (United Kingdom)
3. University of California at Santa Barbara, Santa Barbara CA 93106-9530 (United States)
4. Canadian Astronomy Data Centre, NRC Herzberg Institute for Astrophysics, 5071 West Saanich Road, Victoria BC V9E 2E7 (Canada)
5. LPNHE, CNRS-IN2P3 and Universites Paris VI and VII, 4 place Jussieu, 75252 Paris Cedex 05 (France)
6. LAM, Pole de l'Etoile Site de Chateau-Gombert, 38 rue Frederic Joliot-Curie, 13388 Marseille Cedex 13 (France)
7. Department of Astronomy and Astrophysics, University of Toronto, 60 St. George Street, Toronto ON M5S 3H8 (Canada)
8. Department of Astrophysical and Planetary Sciences, University of Colorado, Boulder, CO 80309-0391 (United States)
9. CPPM, CNRS-IN2P3 and Universite Aix-Marseille II, Case 907, 13288 Marseille Cedex 9 (France)
10. 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), Journal Name: Astronomical Journal (New York, N.Y. Online) Journal Issue: 2 Vol. 139; ISSN 1538-3881
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTRONOMY AND ASTROPHYSICS
99 GENERAL AND MISCELLANEOUS
CATALOGS
DUSTS
GALAXIES
RED SHIFT
SUPERNOVAE
TELESCOPES
TIME DELAY