Analysis of Stellar Spectra from LAMOST DR5 with Generative Spectrum Networks
文献类型：期刊论文
| 作者 | Wang Rui1,2,3; Luo A-li2,3; Zhang Shuo1,2,3; Hou Wen2,3; Du Bing2,3; Song Yihan2,3; Wu Kefei2,3; Chen Jianjun2,3; Zuo Fang2,3; Qin Li1,2,3 |
| 刊名 | PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC
 |
| 出版日期 | 2019-02-01 |
| 卷号 | 131期号:996页码:13 |
| 关键词 | methods: data analysis techniques: spectroscopic stars: atmospheres |
| ISSN号 | 0004-6280 |
| DOI | 10.1088/1538-3873/aaf25f |
| 英文摘要 | In this study, the fundamental stellar atmospheric parameters (T-eff, log g, [Fe/H], and [alpha/Fe]) were derived for low-resolution spectroscopy from LAMOST DR5 with generative spectrum networks (GSN). This follows the same scheme as a normal artificial neural network with stellar parameters as the input and spectra as the output. The GSN model was effective in producing synthetic spectra after training on the PHOENIX theoretical spectra. In combination with Bayes framework, the application for analysis of LAMOST observed spectra exhibited improved efficiency on the distributed-computing platform, Spark. In addition, the results were examined and validated by a comparison with reference parameters from high-resolution surveys and asteroseismic results. Our results show good consistency with the results from other surveys and catalogs. Our proposed method is reliable with a precision of 80 K for T-eff, 0.14 dex for log g, 0.07 dex for [Fe/H] and 0.168 dex for [alpha/Fe], for spectra with a signal-to-noise (S/N) in g bands (S/N-g) higher than 50. The parameters estimated as a part of this work are available at. http://paperdata.china-vo.org/GSN_parameters/GSN_parameters.csv. |
| WOS关键词 | GENEVA-COPENHAGEN SURVEY ; ATMOSPHERIC PARAMETERS ; MODEL ATMOSPHERES ; SPECTROSCOPIC SURVEY ; SOLAR NEIGHBORHOOD ; STARS ; SEGUE ; GAIA ; PARAMETRIZATION ; PERFORMANCE |
| 资助项目 | National Key Basic Research Program of China[2014CB845700] ; National Natural Science Foundation of China[11390371] ; National Development and Reform Commission |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000455937400001 |
| 出版者 | IOP PUBLISHING LTD |
| 资助机构 | National Key Basic Research Program of China ; National Key Basic Research Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Development and Reform Commission ; National Development and Reform Commission ; National Key Basic Research Program of China ; National Key Basic Research Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Development and Reform Commission ; National Development and Reform Commission ; National Key Basic Research Program of China ; National Key Basic Research Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Development and Reform Commission ; National Development and Reform Commission ; National Key Basic Research Program of China ; National Key Basic Research Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Development and Reform Commission ; National Development and Reform Commission |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/24703]  |
| 专题 | 中国科学院国家天文台 |
| 通讯作者 | Luo A-li |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China 3.Chinese Acad Sci, Natl Astron Observ, Key Lab Opt Astron, Beijing 100012, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang Rui,Luo A-li,Zhang Shuo,et al. Analysis of Stellar Spectra from LAMOST DR5 with Generative Spectrum Networks[J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC,2019,131(996):13. |
| APA | Wang Rui.,Luo A-li.,Zhang Shuo.,Hou Wen.,Du Bing.,...&Lu Yan.(2019).Analysis of Stellar Spectra from LAMOST DR5 with Generative Spectrum Networks.PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC,131(996),13. |
| MLA | Wang Rui,et al."Analysis of Stellar Spectra from LAMOST DR5 with Generative Spectrum Networks".PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC 131.996(2019):13. |
入库方式： OAI收割
来源：国家天文台
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。