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
收藏
页码：943 / 950
页数：8
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