Revised ages for stars in the solar neighbourhood

被引：0

作者：

Ng, YK

Bertelli, G

机构：

[1] Astron Observ Padova, I-35122 Padua, Italy

[2] Univ Padua, Dept Astron, I-35122 Padua, Italy

[3] Natl Res Council, CNR, GNA, Rome, Italy

来源：

ASTRONOMY & ASTROPHYSICS | 1998年 / 329卷 / 03期

关键词：

methods : data analysis; stars; statistics; HR-diagram; Galaxy : solar neighbourhood;

D O I：

暂无

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

New ages are computed for the stars from the Edvardsson et al. (1993) data set. The revised values are systematically larger toward older ages (t > 4 Gyr), while they are slightly lower for t < 4 Gyr. A similar, but considerably smaller trend is present when the ages are computed with the distances based on Hipparcos parallaxes. The resulting age-metallicity relation has a small, but distinct slope of similar to 0.07 dex/Gyr.

引用

页码：943 / 950

页数：8

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