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

页码：495 / 499

页数：5

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