SPCANet: Stellar Parameters and Chemical Abundances Network for LAMOST-II Medium Resolution Survey | |
Wang, Rui12,13; Luo, A-Li10,11,12,13; Chen, Jian-Jun13; Hou, Wen13; Zhang, Shuo12,13; Zhao, Yong-Heng12,13; Li, Xiang-Ru9; Hou, Yong-Hui8,12; LAMOST MRS Collaboration1,2,3,4,5,6,7,10,13 | |
刊名 | ASTROPHYSICAL JOURNAL |
2020-03-01 | |
卷号 | 891期号:1页码:12 |
关键词 | Stellar atmospheres Astronomical methods Spectroscopy |
ISSN号 | 0004-637X |
DOI | 10.3847/1538-4357/ab6dea |
产权排序 | 第9完成单位 |
文献子类 | Article |
英文摘要 | The fundamental stellar atmospheric parameters (T-eff and log g) and 13 chemical abundances are derived for medium-resolution spectroscopy from Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) Medium Resolution Survey (MRS) data sets with a deep-learning method. The neural networks we designed, named SPCANet, precisely map LAMOST MRS spectra to stellar parameters and chemical abundances. The stellar labels derived by SPCANet have precisions of 119 K for T-eff and 0.17 dex for log g. The abundance precision of 11 elements including [C/H], [N/H], [O/H], [Mg/H], [Al/H], [Si/H], [S/H], [Ca/H], [Ti/H], [Cr/H], [Fe/H], and [Ni/H] are 0.06 similar to 0.12 dex, while that of [Cu/H] is 0.19 dex. These precisions can be reached even for spectra with signal-to-noise ratios as low as 10. The results of SPCANet are consistent with those from other surveys such as APOGEE, GALAH, and RAVE, and are also validated with the previous literature values including clusters and field stars. The catalog of the estimated parameters is available at doi:10.12149/101012. |
学科主题 | 天文学 ; 恒星与银河系 ; 恒星天文学 |
URL标识 | 查看原文 |
出版地 | TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND |
资助项目 | National Natural Science Foundation of China[U1931209] ; National Natural Science Foundation of China[U1631131] ; National Natural Science Foundation of China[11973060] ; National Natural Science Foundation of China[11973022] ; Chinese Academy of Sciences[U1931209] ; Chinese Academy of Sciences[U1631131] ; China Scholarship Council ; Key Research Program of Frontier Sciences, CAS[QYZDY-SSW-SLH007] ; National Development and Reform Commission |
WOS关键词 | ATMOSPHERIC PARAMETERS ; SPECTROSCOPIC SURVEY ; SEGUE ; STARS |
WOS研究方向 | Astronomy & Astrophysics |
语种 | 英语 |
出版者 | IOP PUBLISHING LTD |
WOS记录号 | WOS:000518924500001 |
资助机构 | National Natural Science Foundation of China[U1931209, U1631131, 11973060, 11973022] ; Chinese Academy of Sciences[U1931209, U1631131] ; China Scholarship Council ; Key Research Program of Frontier Sciences, CAS[QYZDY-SSW-SLH007] ; National Development and Reform Commission |
内容类型 | 期刊论文 |
源URL | [http://ir.ynao.ac.cn/handle/114a53/22702] |
专题 | 中国科学院云南天文台 |
通讯作者 | Luo, A-Li |
作者单位 | 1.Department of Astronomy and Institute of Theoretical Physics and Astrophysics, Xiamen University, Xiamen 361005, People's Republic of China 2.Department of Physics, Hebei Normal University, Shijiazhuang 050024, People's Republic of China 3.School of Astronomy and Space Science, Nanjing University, Nanjing 210093, People's Republic of China 4.Kavli Institute for Astronomy and Astrophysics, Peking University, Beijing 100871, People's Republic of China 5.Key Laboratory for the Structure and Evolution of Celestial Objects, Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, People's Republic of China 6.Key Laboratory for Research in Galaxies and Cosmology, Shanghai Astronomical Observatory, Chinese Academy of Sciences, Shanghai 200030, People's Republic of China 7.Department of Astronomy, Beijing Normal University, Beijing 100875, People's Republic of China 8.Nanjing Institute of Astronomical Optics, & Technology, National Astronomical Observatories, Chinese Academy of Sciences, Nanjing 210042, People's Republic of China 9.South China Normal University, Guangzhou 510631, People's Republic of China 10.Institute for Astronomical Science and School of Information Management, Dezhou University, Dezhou 253023, People's Republic of China |
推荐引用方式 GB/T 7714 | Wang, Rui,Luo, A-Li,Chen, Jian-Jun,et al. SPCANet: Stellar Parameters and Chemical Abundances Network for LAMOST-II Medium Resolution Survey[J]. ASTROPHYSICAL JOURNAL,2020,891(1):12. |
APA | Wang, Rui.,Luo, A-Li.,Chen, Jian-Jun.,Hou, Wen.,Zhang, Shuo.,...&LAMOST MRS Collaboration.(2020).SPCANet: Stellar Parameters and Chemical Abundances Network for LAMOST-II Medium Resolution Survey.ASTROPHYSICAL JOURNAL,891(1),12. |
MLA | Wang, Rui,et al."SPCANet: Stellar Parameters and Chemical Abundances Network for LAMOST-II Medium Resolution Survey".ASTROPHYSICAL JOURNAL 891.1(2020):12. |
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