Spectroscopically peculiar Type Ia supernovae and implications for progenitors

被引：24

作者：

Branch, D ^{[1
]}

机构：

[1] Univ Oklahoma, Dept Phys & Astron, Norman, OK 73019 USA

来源：

PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC | 2001年 / 113卷 / 780期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1086/318614

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

In a recent paper Li et al. reported that 36% of 45 Type Ia supernovae (SNe Ia) discovered since 1997 in two volume-limited supernova searches were spectroscopically peculiar, and they suggested that because this peculiarity rate is higher than that reported for an earlier observational sample by Branch et al., it is now more likely that SNe Ia are produced by more than one kind of progenitor. In this paper I discuss and clarify the differences between the results of Li et al. and Branch et al., and I suggest that multiple-progenitor systems are now less likely than they were before.

引用

页码：169 / 172

页数：4