Bazin, G., Palanque-Delabrouille, N., Rich, J., Ruhlmann-Kleider, V., Aubourg, E., Le Guillou, L., Astier, P., Balland, C., Basa, S., Carlberg, R.~G., Conley, A., Fouchez, D., Guy, J., Hardin, D., Hook, I.~M., Howell, D.~A., Pain, R., Perrett, K., Pritchet, C.~J., Regnault, N., Sullivan, M., Antilogus, P., Arsenijevic, V., Baumont, S., Fabbro, S., Le Du, J., Lidman, C., Mouchet, M., Mour~ao, A. and Walker, E.~S. (2009), "The core-collapse rate from the Supernova Legacy Survey", aap, 499: 653-660.
Abstract: 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 their
rate to be larger than the type Ia supernova rate by a factor 4.5 ± 0.8(stat.) ± 0.6(sys.). This corresponds to a core-collapse rate at
z = 0.3 of [1.42 ± 0.3(stat.) ± 0.3(sys.)] × 10−4 yr−1 (h−1 Mpc)−3 .
Keywords: supernovae: general, stars: evolution, surveys
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