On the evidence for brown dwarf secondary stars in cataclysmic variables

被引：35

作者：

Littlefair, SP

Dhillon, VS

Martín, EL

机构：

[1] Univ Exeter, Sch Phys, Exeter EX4 4QL, Devon, England

[2] Univ Sheffield, Dept Phys & Astron, Sheffield S3 7RH, S Yorkshire, England

[3] Univ Hawaii, Inst Astron, Honolulu, HI 96822 USA

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2003年 / 340卷 / 01期

关键词：

binaries : spectroscopic; stars : individual : LL And; stars; low-mass; brown dwarfs; novae; cataclysmic variables; infrared : stars;

D O I：

10.1046/j.1365-8711.2003.06295.x

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present the K-band spectrum of the cataclysmic variable LL And, obtained using NIRSPEC on Keck-II. The spectrum shows no evidence for the absorption features observed by Howell and Ciardi, which these authors used to claim a detection of a brown dwarf secondary star in LL And. In light of our new data, we review the evidence for brown dwarf secondary stars in this and other cataclysmic variables.

引用

页码：264 / 268

页数：5

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