Chemical evolution of the Orion association. IV. The oxygen and iron abundances of F and G stars

被引：51

作者：

Cunha, K

Smith, VV

Lambert, DL

机构：

[1] Observ Nacl, CNPq, BR-20921 Rio De Janeiro, Brazil

[2] Univ Texas, Dept Phys, El Paso, TX 79968 USA

[3] Univ Texas, Mcdonald Observ, Austin, TX 78712 USA

[4] Univ Texas, Dept Astron, Austin, TX 78741 USA

来源：

ASTROPHYSICAL JOURNAL | 1998年 / 493卷 / 01期

关键词：

open clusters and associations; individual (Orion association); stars; abundances; pre-main-sequence;

D O I：

10.1086/305118

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Oxygen and iron abundances are derived for a sample of pre-main-sequence F and G stars of the Orion association. Results for association members are compared with results published previously for main-sequence B stars in the association. The abundances reveal that the F and G stars exhibit the pattern of abundances shown by the main-sequence B stars: the stars have a single iron abundance, but there is a star-to-star variation of oxygen abundance. Oxygen-rich and oxygen-poor stars are roughly segregated on the sky.

引用

页码：195 / 205

页数：11

共 38 条

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