The core-collapse rate from the Supernova Legacy Survey

被引：120

作者：

Bazin, G. ^{[2
]}

Palanque-Delabrouille, N. ^{[2
]}

Rich, J. ^{[2
]}

Ruhlmann-Kleider, V. ^{[2
]}

Aubourg, E. ^{[1
,2
]}

Le Guillou, L. ^{[4
,5
,6
]}

Astier, P. ^{[4
,5
,6
]}

Balland, C. ^{[4
,5
,6
,7
]}

Basa, S. ^{[15
]}

Carlberg, R. G. ^{[14
]}

Conley, A. ^{[14
]}

Fouchez, D. ^{[13
]}

Guy, J. ^{[4
,5
,6
]}

Hardin, D. ^{[4
,5
,6
]}

Hook, I. M. ^{[11
]}

Howell, D. A. ^{[14
]}

Pain, R. ^{[4
,5
,6
]}

Perrett, K. ^{[14
]}

Pritchet, C. J. ^{[12
]}

Regnault, N. ^{[4
,5
,6
]}

Sullivan, M. ^{[11
]}

Antilogus, P. ^{[4
,5
,6
]}

Arsenijevic, V. ^{[8
,9
]}

Baumont, S. ^{[4
,5
,6
]}

Fabbro, S. ^{[8
,9
]}

Le Du, J. ^{[13
]}

Lidman, C. ^{[10
]}

Mouchet, M. ^{[1
,3
]}

Mourao, A. ^{[8
,9
]}

Walker, E. S. ^{[11
]}

机构：

[1] CNRS, APC, UMR 7164, F-75205 Paris 13, France

[2] CEA Saclay, DSM Irfu Spp, F-91191 Gif Sur Yvette, France

[3] Observ Paris, CNRS, Sect Meudon, LUTH,UMR 8102, F-92195 Meudon, France

[4] Univ Paris 06, F-75252 Paris 05, France

[5] Univ Paris 07, F-75252 Paris 05, France

[6] CNRS IN2P3, LPNHE, F-75252 Paris 05, France

[7] Univ Paris 11, F-91405 Orsay, France

[8] IST, Dept Phys, Lisbon, Portugal

[9] CENTRA Ctr M Astrofis, Lisbon, Portugal

[10] European So Observ, Santiago 19, Chile

[11] Univ Oxford, Oxford OX1 3RH, England

[12] Univ Victoria, Dept Phys & Astron, Victoria, BC V8W 3P6, Canada

[13] CNRS Marseille Luminy, CPPM, F-13288 Marseille 9, France

[14] Univ Toronto, Deparment Astron & Astrophys, Toronto, ON M5S 3H8, Canada

[15] CNRS, LAM, F-13388 Marseille 13, France

来源：

ASTRONOMY & ASTROPHYSICS | 2009年 / 499卷 / 03期

基金：

加拿大自然科学与工程研究理事会;

关键词：

supernovae: general; stars: evolution; surveys;

D O I：

10.1051/0004-6361/200911847

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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' similar to 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.)] x 10(-4) yr(-1)(h(70)(-1) Mpc)(-3).

引用

页码：653 / 660

页数：8

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