THE RADIAL-VELOCITY OF THE WHITE-DWARF GICLAS 29-38

被引：10
|
作者：
BARNBAUM, C
ZUCKERMAN, B
机构：
[1] Department of Astronomy, Univ. of California, Los Angeles, Los Angeles
来源：
ASTROPHYSICAL JOURNAL | 1992年 / 396卷 / 01期
关键词：
BINARIES; CLOSE; STARS; LOW-MASS; BROWN DWARFS; WHITE DWARFS;
D O I：
10.1086/186510
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The white dwarf Giclas 29-38 displays mysterious excess infrared emission at wavelengths between 2 and 10-mu-m. We measured the radial velocity of G29-38 15 times during the latter half of 1990 and 5 times during the latter half of 1991. Our data, in combination with those of Graham et al., which were obtained during the latter half of 1989, imply that the radial velocity of G29-38 is probably varying with a period of approximately 11.2 months and total amplitude of approximately 10 km s-1. If confirmed, the variation is likely due to either a high-mass brown dwarf or low-mass white dwarf companion.
引用
收藏
页码：L31 / L34
页数：4
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