L and t dwarfs in the hyades and ursa major moving groups

被引：25
|
作者：
Bannister, N. P. [1 ]
Jameson, R. F. [1 ]
机构：
[1] Univ Leicester, Dept Phys & Astron, Leicester LE1 7RH, Leics, England
来源：
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2007年 / 378卷 / 01期
关键词：
stars : kinematics; stars; low-mass; brown dwarfs; open clusters and associations : individual : Ursa Major; open clusters and associations : individual : Hyades; galaxies : star clusters;
D O I：
10.1111/j.1745-3933.2007.00312.x
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We have used the moving cluster method to identify three L dwarfs and one T dwarf in the Ursa Major/Sirius moving group (age 400 Myr). Five L dwarfs and two T dwarfs are found to belong to the Hyades moving group (age 625 Myr). These L and T dwarfs define 400- and 625-Myr empirical isochrones, assuming that they have the same age. Moving group membership does not guarantee coevality.
引用
收藏
页码：L24 / L28
页数：5
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