Type Ia supernova rate at $z \sim 0.1$
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D P. Hardin
- Function : Author
C. Afonso
- Function : Author
C. Alard
- Function : Author
J N. Albert
- Function : Author
A. Amadon
- Function : Author
- PersonId : 175431
- IdHAL : alexis-amadon
- ORCID : 0000-0002-2667-9387
- IdRef : 159896924
J. Andersen
- Function : Author
E. Aubourg
- Function : Author
F. Bauer
- Function : Author
J P. Beaulieu
- Function : Author
G. Blanc
- Function : Author
- PersonId : 755311
- ORCID : 0000-0003-4218-3944
S. Char
- Function : Author
X. Charlot
- Function : Author
F. Couchot
- Function : Author
- PersonId : 742631
- IdHAL : francois-couchot2
- ORCID : 0000-0002-7714-7700
- IdRef : 032240503
C. Coutures
- Function : Author
R. Ferlet
- Function : Author
J F. Glicenstein
- Function : Author
B. Goldman
- Function : Author
A. Gould
- Function : Author
D. Graff
- Function : Author
M H. Gros
- Function : Author
J C. Hamilton
- Function : Author
- PersonId : 741425
- IdHAL : jean-christophe-hamilton
- ORCID : 0000-0002-7820-8405
- IdRef : 116048670
J. Kat
- Function : Author
T. Lasserre
- Function : Author
E. Lesquoy
- Function : Author
C. Loup
- Function : Author
C. Magneville
- Function : Author
J B. Marquette
- Function : Author
- PersonId : 737228
- IdHAL : jean-baptiste-marquette
- ORCID : 0000-0002-7901-7213
E. Maurice
- Function : Author
A. Milsztajn
- Function : Author
N. Palanque-Delabrouille
- Function : Author
L. Prevot
- Function : Author
J. Rich
- Function : Author
M. Spiro
- Function : Author
A. Vidal-Madjar
- Function : Author
L. Vigroux
- Function : Author
S. Zylberajch
- Function : Author
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 supernov{æ} were detected, four of which were spectroscopically identified as type Ia supernov{æ}. 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).