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

页码：L24 / L28

页数：5

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