Abundance Ratios in Metal-Rich Halo and Thick-Disk Stars

被引：0
|
作者：
P.E. Nissen
机构：
[1] University of Aarhus,Institute of Physics and Astronomy
来源：
Astrophysics and Space Science | 1999年 / 265卷
关键词：
Globular Cluster; Abundance Ratio; Dwarf Galaxy; Star Formation Rate; Thick Disk;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Recent determinations of precise abundance ratios for nearby halo and thick disk stars in the metallicity range −1.3 < [Fe/H] < −0.5 have revealed a significant cosmic spread in the abundances of oxygen, magnesium, sodium, nickel, s-process and r-process elements relative to iron. Possible explanations of these variations are reviewed. In particular, it is discussed if the differences in abundance ratios are correlated with the kinematics of the stars, and hence can be used to identify stellar populations in the Galaxy.
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页码：249 / 256
页数：7
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