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Abundance gradients in the galactic disk
Cui, CZ; Chen, YQ; Zhao, G; Zhao, YH
2003-02-01
发表期刊SCIENCE IN CHINA SERIES G-PHYSICS ASTRONOMY
卷号46期号:1页码:52-61
摘要The relationship between abundances and orbital parameters for 235 F- and G-type intermediate- and low- mass stars in the Galaxy is analyzed. We found that there are abundance gradients in the thin disk in both radial and vertical directions (-0.116 dex kpc(-1) and -0.309 dex kpc-1 respectively). The gradients appear to be flatter as the Galaxy evolves. No gradient is found in the thick disk based on 18 thick disk stars. These results indicate that the ELS model is mainly suitable for the evolution of the thin disk, while the SZ model is more suitable for the evolution of the thick disk. Additionally, these results indicate that in-fall and out-flow processes play important roles in the chemical evolution of the Galaxy.
关键词Late-type Stars Abundances Galactic Disk Evolution
收录类别SCI
语种英语
WOS记录号WOS:000181438600008
引用统计
被引频次:2[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.bao.ac.cn/handle/114a11/8481
专题光学天文研究部
作者单位Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
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Cui, CZ,Chen, YQ,Zhao, G,et al. Abundance gradients in the galactic disk[J]. SCIENCE IN CHINA SERIES G-PHYSICS ASTRONOMY,2003,46(1):52-61.
APA Cui, CZ,Chen, YQ,Zhao, G,&Zhao, YH.(2003).Abundance gradients in the galactic disk.SCIENCE IN CHINA SERIES G-PHYSICS ASTRONOMY,46(1),52-61.
MLA Cui, CZ,et al."Abundance gradients in the galactic disk".SCIENCE IN CHINA SERIES G-PHYSICS ASTRONOMY 46.1(2003):52-61.
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