Type Ia supernova rate at a redshift of ~ 0.1

G. Blanc; C. Afonso; C. Alard; J.N. Albert; G. Aldering; A. Amadon; J. Andersen; R. Ansari; E. Aubourg; C. Balland; P. Bareyre; J.P. Beaulieu; X. Charlot; A. Conley; C. Coutures; T. Dahlen; F. Derue; X. Fan; R. Ferlet; G. Folatelli; P. Fouque; G. Garavini; J.F. Glicenstein; B. Goldman; A. Goobar; A. Gould; D. Graff; M. Gros; J. Haissinski; C. Hamadache; D. Hardin; I.M. Hook; J. Dekat; S. Kent; A. Kim; T. Lasserre; L. LeGuillou; E. Lesquoy; C. Loup; C. Magneville; J.B. Marquette; E. Maurice; A. Maury; A. Milsztajn; M. Moniez; M. Mouchet; H. Newberg; S. Nobili; N. Palanque-Delabrouille; O. Perdereau; L. prevot; Y.R. Rahal; N. Regnault; J. Rich; P. Ruiz-Lapuente; M. Spiro; P. Tisserand; A. Vidal-Madjar; L. Vigroux; N.A. Walton; S. Zylberajch

HAL: in2p3-00023735, version 1

arXiv: astro-ph/0405211

DOI: 10.1051/0004-6361:20035948

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Astronomy and Astrophysics 423 (2004) 881-894

Type Ia supernova rate at a redshift of ~ 0.1

G. Blanc¹, C. Afonso^{1, 2}, C. Alard³, J.N. Albert⁴, G. Aldering, A. Amadon¹, J. Andersen, R. Ansari⁴, E. Aubourg¹, C. Balland^{5, 6}, P. Bareyre^{1, 2}, J.P. Beaulieu⁷, X. Charlot¹, A. Conley, C. Coutures¹, T. Dahlen, F. Derue⁵, X. Fan, R. Ferlet⁷, G. Folatelli, P. Fouque⁸, G. Garavini, J.F. Glicenstein¹, B. Goldman^{1, 2}, A. Goobar¹, A. Gould¹, D. Graff, M. Gros¹, J. Haissinski⁴, C. Hamadache¹, D. Hardin⁵, I.M. Hook, J. Dekat¹, S. Kent, A. Kim, T. Lasserre¹, L. LeGuillou¹, E. Lesquoy^{1, 7}, C. Loup⁷, C. Magneville¹, J.B. Marquette⁷, E. Maurice, A. Maury, A. Milsztajn¹, M. Moniez⁴, M. Mouchet⁹, H. Newberg, S. Nobili, N. Palanque-Delabrouille¹, O. Perdereau⁴, L. prevot, Y.R. Rahal⁴, N. Regnault^{4, 10}, J. Rich¹, P. Ruiz-Lapuente, M. Spiro¹, P. Tisserand¹, A. Vidal-Madjar⁷, L. Vigroux¹, N.A. Walton, S. Zylberajch¹

For the EROS collaboration(s)

(2004)

We present the type Ia rate measurement based on two EROS supernova search campaigns (in 1999 and 2000). Sixteen supernovae identified as type Ia were discovered. The measurement of the detection efficiency, using a Monte Carlo simulation, provides the type Ia supernova explosion rate at a redshift ~ 0.13. The result is $0.125^{+0.044+0.028}_{-0.034-0.028} h_{70}^2$ SNu where 1 SNu = 1 SN / $10^{10} L_{sun}^B$ / century. This value is compatible with the previous EROS measurement (Hardin et al. 2000), done with a much smaller sample, at a similar redshift. Comparison with other values at different redshifts suggests an evolution of the type Ia supernova rate.

1:	DAPNIA - Département d'Astrophysique, de physique des Particules, de physique Nucléaire et de l'Instrumentation Associée

2:	PCC - Physique Corpusculaire et Cosmologie - Collège de France

3:	GEPI - Galaxies, Etoiles, Physique, Instrumentation

4:	LAL - Laboratoire de l'Accélérateur Linéaire

5:	LPNHE - Laboratoire de Physique Nucléaire et de Hautes Énergies

6:	IAS - Institut d'astrophysique spatiale

7:	IAP - Institut d'Astrophysique de Paris

8:	UMS 831 - UMS 831 unité mixte de service

9:	LUTH - Laboratoire Univers et Théories

10:	LLR - Laboratoire Leprince-Ringuet

Subject(s)

Sciences of the Universe/Astrophysics

Physics/Astrophysics/Cosmology and Extra-Galactic Astrophysics

Fulltext link:

http://fr.arXiv.org/abs/astro-ph/0405211


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Submitted on: Thursday, 14 December 2006 13:35:31
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