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Article Dans Une Revue Monthly Notices of the Royal Astronomical Society Année : 2017

The volumetric rate of superluminous supernovae at z ∼ 1

S. Prajs
  • Fonction : Auteur
M. Sullivan
  • Fonction : Auteur
M. Smith
  • Fonction : Auteur
A. Levan
  • Fonction : Auteur
N.V. Karpenka
  • Fonction : Auteur
T.D.P. Edwards
  • Fonction : Auteur
C.R. Walker
  • Fonction : Auteur
W.M. Wolf
  • Fonction : Auteur
R. Carlberg
  • Fonction : Auteur
D.A. Howell
  • Fonction : Auteur
C. Lidman
  • Fonction : Auteur
C. Pritchet
  • Fonction : Auteur

Résumé

We present a measurement of the volumetric rate of superluminous supernovae (SLSNe) at z ∼ 1.0, measured using archival data from the first four years of the Canada–France–Hawaii Telescope Supernova Legacy Survey (SNLS). We develop a method for the photometric classification of SLSNe to construct our sample. Our sample includes two previously spectroscopically identified objects, and a further new candidate selected using our classification technique. We use the point-source recovery efficiencies from Perrett et al. and a Monte Carlo approach to calculate the rate based on our SLSN sample. We find that the three identified SLSNe from SNLS give a rate of $$91^{+76}_{-36}$$ SNe yr^−1 Gpc^−3 at a volume-weighted redshift of z = 1.13. This is equivalent to 2.2$$^{+1.8}_{-0.9}\times 10^{-4}$$ of the volumetric core-collapse supernova rate at the same redshift. When combined with other rate measurements from the literature, we show that the rate of SLSNe increases with redshift in a manner consistent with that of the cosmic star formation history. We also estimate the rate of ultra-long gamma-ray bursts based on the events discovered by the Swift satellite, and show that it is comparable to the rate of SLSNe, providing further evidence of a possible connection between these two classes of events. We also examine the host galaxies of the SLSNe discovered in SNLS, and find them to be consistent with the stellar-mass distribution of other published samples of SLSNe.

Dates et versions

hal-01555026 , version 1 (03-07-2017)

Identifiants

Citer

S. Prajs, M. Sullivan, M. Smith, A. Levan, N.V. Karpenka, et al.. The volumetric rate of superluminous supernovae at z ∼ 1. Monthly Notices of the Royal Astronomical Society, 2017, 464 (3), pp.3568-3579. ⟨10.1093/mnras/stw1942⟩. ⟨hal-01555026⟩
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