Constraining Type Ia Supernovae progenitors from three years of SNLS data - CNRS - Centre national de la recherche scientifique Accéder directement au contenu
Article Dans Une Revue The Astrophysical Journal Année : 2011

Constraining Type Ia Supernovae progenitors from three years of SNLS data

F. B. Bianco
  • Fonction : Auteur
D.A. Howell
  • Fonction : Auteur
M. Sullivan
  • Fonction : Auteur
A. Conley
  • Fonction : Auteur
D. Kasen
  • Fonction : Auteur
S. González-Gaitán
  • Fonction : Auteur
R.G. Carlberg
  • Fonction : Auteur
I. Hook
  • Fonction : Auteur
C. Lidman
  • Fonction : Auteur
S. Perlmutter
  • Fonction : Auteur
K.M. Perrett
  • Fonction : Auteur
C.J. Pritchet
  • Fonction : Auteur

Résumé

While it is generally accepted that Type Ia supernovae are the result of the explosion of a carbon-oxygen White Dwarf accreting mass in a binary system, the details of their genesis still elude us, and the nature of the binary companion is uncertain. Kasen (2010) points out that the presence of a non-degenerate companion in the progenitor system could leave an observable trace: a flux excess in the early rise portion of the lightcurve caused by the ejecta impact with the companion itself. This excess would be observable only under favorable viewing angles, and its intensity depends on the nature of the companion. We searched for the signature of a non-degenerate companion in three years of Supernova Legacy Survey data by generating synthetic lightcurves accounting for the effects of shocking and comparing true and synthetic time series with Kolmogorov-Smirnov tests. Our most constraining result comes from noting that the shocking effect is more prominent in rest-frame B than V band: we rule out a contribution from white dwarf-red giant binary systems to Type Ia supernova explosions greater than 10% at 2 sigma, and than 20% at 3 sigma level.

Dates et versions

in2p3-00739656 , version 1 (08-10-2012)

Identifiants

Citer

F. B. Bianco, D.A. Howell, M. Sullivan, A. Conley, D. Kasen, et al.. Constraining Type Ia Supernovae progenitors from three years of SNLS data. The Astrophysical Journal, 2011, 741, pp.20. ⟨10.1088/0004-637X/741/1/20⟩. ⟨in2p3-00739656⟩
33 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More