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Stellar Parameters and Abundance Analysis of 58 Late G Giants
Liu, Yujuan1,2; Sato, Bun'ei3; Takeda, Yoichi2; Ando, Hiroyasu2; Zhao, Gang1
2010
发表期刊PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN
卷号62期号:4页码:1071-1084
摘要We present stellar atmospheric parameters, and kinematic parameters for a part of Xinglong Planet Search Program sample 58 late G-type giants, obtained at Okayama Astrophysical Observatory. Additionally, we determined the chemical abundances, especially for the elements C, O, and Na. The metallicity distribution of our sample ranges covered from 0.6 to 0.2 in [Fe/H], which supports the previous results, suggesting a lack of super metal-rich giants with [Fe/H] > +0.2. The abundance of C is depleted by 0.13 dex, and [Na/Fe] shows an overabundance of 0.1 dex compared to a dwarf with the same spectral type, while the 0 abundance was not altered after the first dredge up. These results are consistent with theoretical predictions of stellar evolution. The behaviors of Si, Ca, Ti, Cr, Ni, Mn, Sc II, Y II, and Ce II in our giants follow the same trends as in dwarfs.
关键词Stars: Abundances Stars: Atmospheres Stars: Fundamental Parameters Stars: Late-type
收录类别SCI
语种英语
WOS记录号WOS:000282485100023
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文献类型期刊论文
条目标识符http://ir.bao.ac.cn/handle/114a11/7734
专题光学天文研究部
作者单位1.Chinese Acad Sci, Natl Astron Observ, Key Lab Opt Astron, Beijing 100012, Peoples R China
2.Natl Inst Nat Sci, Natl Astron Observ Japan, Mitaka, Tokyo 1818588, Japan
3.Tokyo Inst Technol, Meguro Ku, Tokyo 1528550, Japan
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Liu, Yujuan,Sato, Bun'ei,Takeda, Yoichi,et al. Stellar Parameters and Abundance Analysis of 58 Late G Giants[J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,2010,62(4):1071-1084.
APA Liu, Yujuan,Sato, Bun'ei,Takeda, Yoichi,Ando, Hiroyasu,&Zhao, Gang.(2010).Stellar Parameters and Abundance Analysis of 58 Late G Giants.PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,62(4),1071-1084.
MLA Liu, Yujuan,et al."Stellar Parameters and Abundance Analysis of 58 Late G Giants".PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN 62.4(2010):1071-1084.
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