Extremely metal-poor stars .1. Spectroscopic data

被引：48

作者：

Norris, JE

Ryan, SG

Beers, TC

机构：

[1] ANGLO AUSTRALIAN OBSERV,EPPING,NSW 2121,AUSTRALIA

[2] MICHIGAN STATE UNIV,DEPT PHYS & ASTRON,E LANSING,MI 48824

来源：

ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES | 1996年 / 107卷 / 01期

关键词：

nuclear reactions; nucleosynthesis; abundances; stars; Population II;

D O I：

10.1086/192368

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We have obtained high-resolution spectroscopic material for 23 stars with extremely low metal abundances, nine of which have [Fe/H] less than -3.0. We present here equivalent width measurements and compare them with literature values, where they exist. Atomic log gf-values are also tabulated. For several of the most metal-poor stars, we combine the line lists of different investigators to provide the most comprehensive data compilation available. These measurements will be used in companion papers as the basis for an analysis of the abundances of these stars and a discussion of their significance for Galactic chemical enrichment.

引用

页码：391 / 421

页数：31

共 62 条

[1]

BARD A, 1991, ASTRON ASTROPHYS, V248, P315

[2]

BARD A, 1994, ASTRON ASTROPHYS, V282, P1014

[3] A SEARCH FOR STARS OF VERY LOW METAL ABUNDANCE .1. [J].