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The Core-collapse rate from the Supernova Legacy Survey

By G. Bazin, N. Palanque-delabrouille, J. Rich, V. Ruhlmann-kleider, E. Aubourg, L. Le Guillou and P. Astier


We use three years of data from the Supernova Legacy Survey (SNLS) to study the general properties of core-collapse and type Ia supernovae. This is the first such study using the “rolling search ” technique which guarantees well-sampled SNLS light curves and good efficiency for supernovae brighter than i ′ ∼ 24. Using host photometric redshifts, we measure the supernova absolute magnitude distribution down to luminosities 4.5 mag fainter than normal SNIa. Using spectroscopy and light-curve fitting to discriminate against SNIa, we find a sample of 117 core-collapse supernova candidates with redshifts z<0.4 (median redshift of 0.29) and measure thei

Year: 2008
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