The Ross 451 group of halo stars

被引：11

作者：

Eggen, OJ

机构：

[1] Cerro Tololo Inter-Amer. Observatory, Natl. Optical Astron. Observatories, La Serena

来源：

ASTRONOMICAL JOURNAL | 1996年 / 112卷 / 06期

关键词：

D O I：

10.1086/118210

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Forty-two possible member of a group of halo stars moving with Ross 451 are isolated. The group members include several subgiants and HB stars as well as three VSPC (RR Lyr) variables WZ Hya, BH Peg, and BN Vul. Photometric and spectroscopic evidence gives [Fe/H] near -1.5 dex and the surface Li of the subgiants decreases by an order of magnitude between the main sequence turn-off point and M(v) similar to+1.8 mag. Several of the stars that Majewski [ApJS, 78, 87 (1992)] finds in a velocity clump at the NGP are probably members of this or the Kapteyn's star group. (C) 1996 American Astronomical Society.

引用

页码：2661 / 2666

页数：6

共 28 条

[1] SUBGIANT CH-STARS [J].