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
收藏
页码：264 / 268
页数：5
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