Prajs, S. and Sullivan, M. and Smith, M. and Levan, A. and Karpenka, N. V. and Edwards, T. D. P. and Walker, C. R. and Wolf, W. M. and Balland, C. and Carlberg, R. and Howell, D. A. and Lidman, C. and Pain, Reynald and Pritchet, C. and Ruhlmann-Kleider, V. (2017) The volumetric rate of superluminous supernovae at z ~ 1. MNRAS, 464 (3). pp. 3568-3579.
Full text not available from this repository.Abstract
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.