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The abundances of nearby red clump giants
Liu, Y. J.; Zhao, G.; Shi, J. R.; Pietrzynski, G.; Gieren, W.
2007-12-01
发表期刊MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
卷号382期号:2页码:553-566
摘要Based on the analysis of high-resolution spectra with a high signal-to-noise ratio, we have determined the abundances of the alpha-elements O, Si, Ca and Ti, the iron peak elements V, Fe and Ni, and the heavy element Ba without the consideration of non-local thermodynamic equilibrium (NLTE) effect and the light neutron-rich elements Na, Mg and Al with an NLTE analysis for 63 nearby red clump giants. Fe abundances cover a logarithmic range between -0.60 and +0.35 relative to solar. All abundance ratios with respect to Fe are similar to those found in the Sun. Hyperfine structure (HFS) was taken into account when calculating V lines. The difference in abundances obtained with and without HFS can be as large as 0.5 dex.
关键词Stars : Abundances Stars : Atmospheres Stars : Late-type
DOI10.1111/j.1365-2966.2007.11852.x
收录类别SCI
语种英语
WOS记录号WOS:000251205400006
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文献类型期刊论文
条目标识符http://ir.bao.ac.cn/handle/114a11/8316
专题光学天文研究部
作者单位1.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
3.Univ Concepcion, Dept Fis, Concepcion, Chile
4.Univ Warsaw Observ, PL-00478 Warsaw, Poland
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Liu, Y. J.,Zhao, G.,Shi, J. R.,et al. The abundances of nearby red clump giants[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2007,382(2):553-566.
APA Liu, Y. J.,Zhao, G.,Shi, J. R.,Pietrzynski, G.,&Gieren, W..(2007).The abundances of nearby red clump giants.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,382(2),553-566.
MLA Liu, Y. J.,et al."The abundances of nearby red clump giants".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 382.2(2007):553-566.
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