L dwarfs in the Hyades

被引：27
|
作者：
Hogan, E. [1 ]
Jameson, R. F. [1 ]
Casewell, S. L. [1 ]
Osbourne, S. L. [1 ]
Hambly, N. C. [2 ]
机构：
[1] Univ Leicester, Dept Phys & Astron, Leicester LE1 7RH, Leics, England
[2] Univ Edinburgh, SUPA, Royal Observ, Sch Phys,Inst Astron, Edinburgh EH9 3HJ, Midlothian, Scotland
来源：
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2008年 / 388卷 / 02期
关键词：
stars; low-mass; brown dwarfs; open clusters and associations : individual : Hyades;
D O I：
10.1111/j.1365-2966.2008.13437.x
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We present the results of a proper motion survey of the Hyades to search for brown dwarfs, based on UKIRT Deep Sky Survey (UKIDSS) and Two-Micron All Sky Survey (2MASS) data. This survey covers similar to 275 deg(2) to a depth of K similar to 15 mag, equivalent to a mass of similar to 0.05 M(circle dot) assuming a cluster age of 625 Myr. The discovery of 12 L dwarf Hyades members is reported. These members are also brown dwarfs, with masses between 0.05 < M < 0.075 M(circle dot). A high proportion of these L dwarfs appear to be photometric binaries.
引用
收藏
页码：495 / 499
页数：5
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