The Lithium Abundances from the Large Sky Area Multi-object Fiber Spectroscopic Telescope Medium-resolution Survey. I. The Method
文献类型：期刊论文
| 作者 | Gao,Qi2,3; Shi,Jian-Rong2,3; Yan,Hong-Liang2,3; Li,Chun-Qian2,3; Chen,Tian-Yi2,3; Zhang,Jing-Hua2; Liu,Shuai2,3; Yan,Tai-Sheng2,3; Xie,Xiao-Jin2,4; Ding,Ming-Yi2,3 |
| 刊名 | The Astrophysical Journal
 |
| 出版日期 | 2021-06-01 |
| 卷号 | 914期号:2 |
| 关键词 | Stellar abundances Stellar evolution Chemically peculiar stars |
| ISSN号 | 0004-637X |
| DOI | 10.3847/1538-4357/abf841 |
| 英文摘要 | Abstract One of the purposes of taking spectra for millions of stars through the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) medium-resolution survey (MRS) is to obtain the elemental abundances, so that one can trace the origin and evolution for the element of interests. Lithium is one of such elements of great importance, which exhibits many puzzling behaviors. Investigating the lithium abundances to a uniquely large sample of stars is essential to understand its origin and evolution. In this paper, we present the lithium abundances obtained from the LAMOST MRS spectra calculated by the template-matching method. Our data set consists of 294,857 spectra that corresponds to 165,479 stars with a resolution power of Δλ/λ ～ 7500. We compared the lithium abundances derived from our work with those using the high-resolution spectra and found a good consistence. The errors of lithium abundances are discussed. Our results suggest that the distribution of lithium abundances show two clear peaks at +2.6 and +1.0 dex, respectively. This sample is potentially important for investigating physical mechanisms occurring inside stars that alter the surface lithium abundance. |
| 语种 | 英语 |
| WOS记录号 | IOP:0004-637X-914-2-ABF841 |
| 出版者 | The American Astronomical Society |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/57463]  |
| 专题 | 中国科学院国家天文台 |
| 通讯作者 | Shi,Jian-Rong |
| 作者单位 | 1.Nanjing Institute of Astronomical Optics and Technology, National Astronomical Observatories, Chinese Academy of Sciences, Nanjing 210042, Peoples Republic Of China 2.CAS Key Laboratory of Optical Astronomy, National Astronomical Observatories, Beijing 100101, People's Republic of China; sjr@bao.ac.cn 3.School of Astronomy and Space Science, University of Chinese Academy of Sciences, Beijing 100049, People’s Republic Of China; hlyan@nao.cas.cn 4.Tibet University, Lhasa 850000, People’s Republic Of China |
| 推荐引用方式 GB/T 7714 | Gao,Qi,Shi,Jian-Rong,Yan,Hong-Liang,et al. The Lithium Abundances from the Large Sky Area Multi-object Fiber Spectroscopic Telescope Medium-resolution Survey. I. The Method[J]. The Astrophysical Journal,2021,914(2). |
| APA | Gao,Qi.,Shi,Jian-Rong.,Yan,Hong-Liang.,Li,Chun-Qian.,Chen,Tian-Yi.,...&Hou,Yong-Hui.(2021).The Lithium Abundances from the Large Sky Area Multi-object Fiber Spectroscopic Telescope Medium-resolution Survey. I. The Method.The Astrophysical Journal,914(2). |
| MLA | Gao,Qi,et al."The Lithium Abundances from the Large Sky Area Multi-object Fiber Spectroscopic Telescope Medium-resolution Survey. I. The Method".The Astrophysical Journal 914.2(2021). |
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来源：国家天文台
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