Stellar Parameterization of LAMOST M Dwarf Stars
文献类型：期刊论文
| 作者 | Li,Jiadong1,4; Liu,Chao1,4; Zhang,Bo3; Tian,Hao1; Qiu,Dan2,5; Tian,Haijun2,5 |
| 刊名 | The Astrophysical Journal Supplement Series
 |
| 出版日期 | 2021-04-01 |
| 卷号 | 253期号:2 |
| ISSN号 | 0067-0049 |
| 关键词 | M dwarf stars Astronomy data analysis Low mass stars Catalogs |
| DOI | 10.3847/1538-4365/abe1c1 |
| 英文摘要 | Abstract The M dwarf stars are the most common stars in the Galaxy, dominating the population of the Galaxy at faint magnitudes. Precise and accurate stellar parameters for M dwarfs are of crucial importance for many studies. However, the atmospheric parameters of M dwarf stars are difficult to determine. In this paper, we present a catalog of the spectroscopic stellar parameters (Teff and [M/H]) of ～300,000 M dwarf stars observed by both LAMOST and Gaia using the Stellar LAbel Machine (SLAM). We train a SLAM model using LAMOST spectra with APOGEE Data Release 16 labels with 2800 K < Teff < 4500K and ?2 dex < [M/H] < 0.5 dex. The SLAM Teff is in agreement to within ～50 K compared to the previous study determined by APOGEE observations, and the SLAM [M/H] agrees within 0.12 dex compared to the APOGEE observation. We also set up a SLAM model trained by the BT-Settl atmospheric model with random uncertainties (in cross validation) to 60 K and agreeing within ～90 K compared to previous studies. |
| 语种 | 英语 |
| 出版者 | The American Astronomical Society |
| WOS记录号 | IOP:0067-0049-253-2-ABE1C1 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/59197]  |
| 专题 | 中国科学院国家天文台 |
| 通讯作者 | Liu,Chao |
| 作者单位 | 1.Key Laboratory of Space Astronomy and Technology, National Astronomical Observatories, CAS, Beijing 100101, People’s Republic of China liuchao@nao.cas.cn 2.Center of Astronomy and Space Science Research, China Three Gorges University, Yichang 443002, People’s Republic of China 3.Department of Astronomy, Beijing Normal University, Beijing 100875, People’s Republic of China 4.University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China 5.China Three Gorges University, Yichang 443002, People’s Republic of China |
| 推荐引用方式 GB/T 7714 | Li,Jiadong,Liu,Chao,Zhang,Bo,et al. Stellar Parameterization of LAMOST M Dwarf Stars[J]. The Astrophysical Journal Supplement Series,2021,253(2). |
| APA | Li,Jiadong,Liu,Chao,Zhang,Bo,Tian,Hao,Qiu,Dan,&Tian,Haijun.(2021).Stellar Parameterization of LAMOST M Dwarf Stars.The Astrophysical Journal Supplement Series,253(2). |
| MLA | Li,Jiadong,et al."Stellar Parameterization of LAMOST M Dwarf Stars".The Astrophysical Journal Supplement Series 253.2(2021). |
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来源：国家天文台
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