The luminosities of supernovae of type Ia derived from cepheid calibrations

被引：9
|
作者：
vandenBergh, S
机构：
来源：
ASTROPHYSICAL JOURNAL | 1996年 / 472卷 / 02期
关键词：
cepheids; distance scale; supernovae; general;
D O I：
10.1086/178075
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Available data on the luminosities of supernovae of Type Ia (SNe Ia) that have been calibrated by Cepheids are collected and discussed. The objects in the present sample show a range of similar to 20 in luminosity. The data strongly confirm the suspicion that SNe Ia in early-type systems are, on average, fainter than those that occur in late-type galaxies. Historical observations of S Andromedae suggest that the maximum magnitude versus rate-of-decline relationship for SNe Ia exhibits a large intrinsic dispersion. This is not surprising because the amount of Ni-56 that is produced, and other observable properties of SNe Ia, are expected to depend sensitively on how much fuel is ignited.
引用
收藏
页码：431 / 434
页数：4
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