amethodofmeasuringtheferatiosfromthespectraofthelamostsurvey
文献类型：期刊论文
| 作者 | Li Ji4; Han Chen4; Xiang Maosheng3; Shi Jianrong2 ; Zhao Jingkun2; Liu Xiaowei3; Zhang Huawei3; Yuan Haibo3; Ci Xuan4; Zhang Xiaofeng4
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| 刊名 | researchinastronomyandastrophysics
 |
| 出版日期 | 2016 |
| 卷号 | 16期号:7页码:110_01 |
| ISSN号 | 1674-4527 |
| 英文摘要 | The α/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 α/Fe of millions of stars in the Galaxy. We present a method of measuring the α/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 α/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 α/Fe measurements are consistent with values derived from high-resolution spectra, and the accuracy of our α/Fe measurements from LAMOST spectra is better than 0.1 dex with spectral signal-to-noise higher than 20. |
| 语种 | 英语 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/46506]  |
| 专题 | 中国科学院国家天文台 |
| 作者单位 | 1.中国科学院国家天文台南京天文光学技术研究所 2.中国科学院国家天文台 3.北京大学 4.河北师范大学 |
| 推荐引用方式 GB/T 7714 | Li Ji,Han Chen,Xiang Maosheng,et al. amethodofmeasuringtheferatiosfromthespectraofthelamostsurvey[J]. researchinastronomyandastrophysics,2016,16(7):110_01. |
| APA | Li Ji.,Han Chen.,Xiang Maosheng.,Shi Jianrong.,Zhao Jingkun.,...&Cao Zihuang.(2016).amethodofmeasuringtheferatiosfromthespectraofthelamostsurvey.researchinastronomyandastrophysics,16(7),110_01. |
| MLA | Li Ji,et al."amethodofmeasuringtheferatiosfromthespectraofthelamostsurvey".researchinastronomyandastrophysics 16.7(2016):110_01. |
入库方式： OAI收割
来源：国家天文台
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