SILICON ABUNDANCES IN NEARBY STARS FROM THE SiI INFRARED LINES
文献类型：期刊论文
| 作者 | Shi, J. R.1; Takada-Hidai, M.2; Takeda, Y.3; Tan, K. F.1; Hu, S. M.4; Zhao, G.1 ; Cao, C.4
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| 刊名 | ASTROPHYSICAL JOURNAL
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| 出版日期 | 2012-08-10 |
| 卷号 | 755期号:1 |
| 关键词 | Galaxy: evolution line: formation line: profiles stars: abundances stars: late-type |
| 英文摘要 | We have used high-resolution, high signal-to-noise ratio infrared spectra from the Subaru Telescope atop Mauna Kea. Line formation calculations of Si I infrared lines in the atmospheres of nearby stars are presented. All abundance results of [Si/Fe] are derived from local thermodynamic equilibrium (LTE) and NLTE statistical equilibrium calculations and spectrum synthesis methods. We found that NLTE effects for Si I infrared lines are important even for metal-rich stars (>0.1 dex), and the NLTE effects may depend on the surface gravities. A good agreement of silicon abundances between the optical and infrared lines is obtained when the NLTE effects are included, while a large difference is found for the LTE results. The derived silicon abundances are overabundant for metal-poor stars. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000306909500036 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/6326]  |
| 专题 | 国家天文台_光学天文研究部 |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Opt Astron, Natl Astron Observ, Beijing 100012, Peoples R China 2.Tokai Univ, Liberal Arts Educ Ctr, Hiratsuka, Kanagawa 2591292, Japan 3.Natl Inst Nat Sci, Natl Astron Observ Japan, Mitaka, Tokyo 1818588, Japan 4.Shandong Univ, Shandong Prov Key Lab Opt Astron & Solar Terr Env, Weihai 264209, Peoples R China |
| 推荐引用方式 GB/T 7714 | Shi, J. R.,Takada-Hidai, M.,Takeda, Y.,et al. SILICON ABUNDANCES IN NEARBY STARS FROM THE SiI INFRARED LINES[J]. ASTROPHYSICAL JOURNAL,2012,755(1). |
| APA | Shi, J. R..,Takada-Hidai, M..,Takeda, Y..,Tan, K. F..,Hu, S. M..,...&Cao, C..(2012).SILICON ABUNDANCES IN NEARBY STARS FROM THE SiI INFRARED LINES.ASTROPHYSICAL JOURNAL,755(1). |
| MLA | Shi, J. R.,et al."SILICON ABUNDANCES IN NEARBY STARS FROM THE SiI INFRARED LINES".ASTROPHYSICAL JOURNAL 755.1(2012). |
入库方式： OAI收割
来源：国家天文台
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