Type Ia supernova rate at z sim 0.1

D.Hardin , C.Afonso , C.Alard , J.N.Albert , A.Amadon , J.Andersen , R.Ansari , \'E.Aubourg

show 39 more authors

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 \'E.Lesquoy C.Loup C.Magneville B.Mansoux J.B.Marquette \'E.Maurice A.Milsztajn M.Moniez N.Palanque-Delabrouille O.Perdereau L.Pr\'evot N.Regnault J.Rich M.Spiro A.Vidal-Madjar L.Vigroux S.Zylberajch The EROS collaboration

Authors on Pith no claims yet

classification 🌌 astro-ph

keywords supernovatyperateweregalaxysearchsupernovaccount

0 comments

read the original 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{\ae} were detected, four of which were spectroscopically identified as type Ia supernov{\ae}. 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).

This paper has not been read by Pith yet.

Type Ia supernova rate at z sim 0.1

discussion (0)