A method of measuring the [alpha/Fe] ratios from the spectra of the LAMOST survey
文献类型：期刊论文
| 作者 | Li, Ji1; Han, Chen1; Xiang, Mao-Sheng2,3; Shi, Jian-Rong3 ; Zhao, Jing-Kun3; Liu, Xiao-Wei2,4; Zhang, Hua-Wei2,4; Yuan, Hai-Bo2,5; Ci, Xuan1; Zhang, Xiao-Feng1
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| 刊名 | RESEARCH IN ASTRONOMY AND ASTROPHYSICS
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| 出版日期 | 2016-07-01 |
| 卷号 | 16期号:7 |
| 关键词 | Galaxy: evolution stars: abundances stars: fundamental parameters techniques: spectroscopy surveys methods: data analysis |
| 英文摘要 | The [alpha/Fe] ratios in stars are good tracers to probe the formation history of stellar populations and the chemical evolution of the Galaxy. The spectroscopic survey of LAMOST provides a good opportunity to determine [alpha/Fe] of millions of stars in the Galaxy. We present a method of measuring the [alpha/Fe] ratios from LAMOST spectra using the template-matching technique of the LSP3 pipeline. We use three test samples of stars selected from the ELODIE and MILES libraries, as well as the LEGUE survey to validate our method. Based on the test results, we conclude that our method is valid for measuring [alpha/Fe] from low-resolution spectra acquired by the LAMOST survey. Within the range of the stellar parameters T-eff = [5000, 7500] K, log g = [1.0, 5.0] dex and [Fe/H]= [-1.5,+ 0.5] dex, our [alpha/Fe] measurements are consistent with values derived from high-resolution spectra, and the accuracy of our [alpha/Fe] measurements from LAMOST spectra is better than 0.1 dex with spectral signal-to-noise higher than 20. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000379555500010 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/5302]  |
| 专题 | 国家天文台_光学天文研究部 |
| 作者单位 | 1.Hebei Normal Univ, Dept Space Sci & Astron, Shijiazhuang 050024, Peoples R China 2.Peking Univ, Dept Astron, Beijing 100871, Peoples R China 3.Chinese Acad Sci, Key Lab Opt Astron, Natl Astron Observ, Beijing 100012, Peoples R China 4.Peking Univ, Kavli Inst Astron & Astrophys, Beijing 100871, Peoples R China 5.Beijing Normal Univ, Dept Astron, Beijing 100875, Peoples R China 6.Chinese Acad Sci, Nanjing Inst Astron Opt & Technol, Natl Astron Observ, Nanjing 210042, Jiangsu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Ji,Han, Chen,Xiang, Mao-Sheng,et al. A method of measuring the [alpha/Fe] ratios from the spectra of the LAMOST survey[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2016,16(7). |
| APA | Li, Ji.,Han, Chen.,Xiang, Mao-Sheng.,Shi, Jian-Rong.,Zhao, Jing-Kun.,...&Cao, Zi-Huang.(2016).A method of measuring the [alpha/Fe] ratios from the spectra of the LAMOST survey.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,16(7). |
| MLA | Li, Ji,et al."A method of measuring the [alpha/Fe] ratios from the spectra of the LAMOST survey".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 16.7(2016). |
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来源：国家天文台
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