THE LUMINOSITY OF THE CLASSICAL CEPHEID-T VUL

被引：9

作者：

EVANS, NR

机构：

[1] Space Astrophysics Laboratory, Inst. for Space and Terrestrial Sci., York University, North York, Ont. M3J 1P3

来源：

ASTRONOMICAL JOURNAL | 1992年 / 104卷 / 01期

关键词：

D O I：

10.1086/116232

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The classical Cepheid T Vul has been discovered to have a hot companion on International Ultraviolet Explorer satellite spectra. The companion has a spectral type of AO.8 V. The absolute magnitude of the Cepheid determined from the companion is M(v)= -3.43 mag. Because the companion is significantly fainter and less massive than the Cepheid and the system has a very low reddening, this is a particularly well-determined luminosity. A high-accuracy velocity study would be valuable to look for orbital motion.

引用

页码：216 / 219

页数：4

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