Lithium-rich Giants in LAMOST Survey. I. The Catalog
文献类型：期刊论文
| 作者 | Gao,Qi4,5; Shi,Jian-Rong4,5; Yan,Hong-Liang4,5; Yan,Tai-Sheng4,5; Xiang,Mao-Sheng3; Zhou,Yu-Tao1,2; Li,Chun-Qian4,5; Zhao,Gang4,5
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| 刊名 | The Astrophysical Journal Supplement Series
 |
| 出版日期 | 2019-12-01 |
| 卷号 | 245期号:2 |
| 关键词 | Late stellar evolution Stellar abundances Late-type giant stars Chemically peculiar stars |
| ISSN号 | 0067-0049 |
| DOI | 10.3847/1538-4365/ab505c |
| 英文摘要 | Abstract Standard stellar evolution model predicts a severe depletion of lithium (Li) abundance during the first dredge up process (FDU). Yet a small fraction of giant stars are still found to preserve a considerable amount of Li in their atmospheres after the FDU. Those giants are usually identified as Li-rich by a widely used criterion, A(Li) > 1.5 dex. A large number of works dedicated to searching for and investigating this minority of the giant family, and the amount of Li-rich giants, has been largely expanded on, especially in the era of big data. In this paper, we present a catalog of Li-rich giants found from the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) survey with Li abundances derived from a template-matching method developed for LAMOST low-resolution spectra. The catalog contains 10,535 Li-rich giants with Li abundances from ～1.5 to ～4.9 dex. We also confirm that the ratio of Li-rich phenomenon among giant stars is about 1%—or more specifically, 1.29%—from our statistically important sample. This is the largest Li-rich giant sample ever reported to date, which significantly exceeds amount of all reported Li-rich giants combined. The catalog will help the community to better understand the Li-rich phenomenon in giant stars. |
| 语种 | 英语 |
| WOS记录号 | IOP:0067-0049-245-2-AB505C |
| 出版者 | The American Astronomical Society |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/28703]  |
| 专题 | 中国科学院国家天文台 |
| 作者单位 | 1.Kavli Institute for Astronomy and Astrophysics, Peking University, Beijing 100871, People’s Republic of China 2.Department of Astronomy, School of Physics, Peking University, Beijing 100871, People’s Republic of China 3.Max-Planck Institute for Astronomy, Konigstuhl, D-69117, Heidelberg, Germany 4.University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China 5.Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100101, People’s Republic of China sjr@bao.ac.cn, hlyan@nao.cas.cn |
| 推荐引用方式 GB/T 7714 | Gao,Qi,Shi,Jian-Rong,Yan,Hong-Liang,et al. Lithium-rich Giants in LAMOST Survey. I. The Catalog[J]. The Astrophysical Journal Supplement Series,2019,245(2). |
| APA | Gao,Qi.,Shi,Jian-Rong.,Yan,Hong-Liang.,Yan,Tai-Sheng.,Xiang,Mao-Sheng.,...&Zhao,Gang.(2019).Lithium-rich Giants in LAMOST Survey. I. The Catalog.The Astrophysical Journal Supplement Series,245(2). |
| MLA | Gao,Qi,et al."Lithium-rich Giants in LAMOST Survey. I. The Catalog".The Astrophysical Journal Supplement Series 245.2(2019). |
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来源：国家天文台
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