Type Ia supernova rate at $z \sim 0.1$

D. Hardin; C. Afonso; C. Alard; J. N. Albert; A. Amadon; J. Andersen; R. Ansari; É. Aubourg; P. Bareyre; F. Bauer; J. P. Beaulieu; G. Blanc; A. Bouquet; S. Char; X. Charlot; F. Couchot; C. Coutures; F. Derue; R. Ferlet; J. F. Glicenstein; B. Goldman; A. Gould; D. Graff; M. Gros; J. Haissinski; J. C. Hamilton; J. de Kat; A. Kim; T. Lasserre; É. Lesquoy; C. Loup; C. Magneville; B. Mansoux; J. B. Marquette; É. Maurice; A. Milsztajn; M. Moniez; N. Palanque-Delabrouille; O. Perdereau; L. Prévot; N. Regnault; J. Rich; M. Spiro; A. Vidal-Madjar; L. Vigroux; S. Zylberajch; The EROS collaboration

arXiv · astro-ph/0006424

Type Ia supernova rate at $z \sim 0.1$

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Abstract

We present the EROS nearby supernova ($z \sim 0.02 - 0.2$) search and the analysis of the first year of data (1997). A total of 80 square degrees were surveyed. Eight supernovæ were detected, four of which were spectroscopically identified as type Ia supernovæ. The search efficiency was determined with a Monte-Carlo simulation taking into account the efficiencies for both supernova detection and host galaxy identification. Assuming that for a given galaxy the supernova rate is proportional to the galactic luminosity, we compute a type Ia supernova explosion rate of: ${\cal R} = 0.44 {}_{-0.21}^{+0.35} {}_{-0.07}^{+0.13} h^2: / 10^{10} \lbsun / 100 {\rm yrs}$ at an average redshift of $\sim 0.1$ where the errors are respectively statistical and systematic (type misidentification included).

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D. Hardin, C. Afonso, C. Alard, J. N. Albert, A. Amadon, J. Andersen, R. Ansari, É. Aubourg, P. Bareyre, F. Bauer, J. P. Beaulieu, G. Blanc, A. Bouquet, S. Char, X. Charlot, F. Couchot, C. Coutures, F. Derue, R. Ferlet, J. F. Glicenstein, B. Goldman, A. Gould, D. Graff, M. Gros, J. Haissinski, J. C. Hamilton, J. de Kat, A. Kim, T. Lasserre, É. Lesquoy, C. Loup, C. Magneville, B. Mansoux, J. B. Marquette, É. Maurice, A. Milsztajn, M. Moniez, N. Palanque-Delabrouille, O. Perdereau, L. Prévot, N. Regnault, J. Rich, M. Spiro, A. Vidal-Madjar, L. Vigroux, S. Zylberajch, The EROS collaboration. 2000-07-04. Type Ia supernova rate at $z \sim 0.1$. https://arxiv.org/abs/astro-ph/0006424

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