An Empirical Template Library for FGK and Late-type A Stars Using LAMOST Observed Spectra
文献类型：期刊论文
| 作者 | Du, Bing1,2; Luo, A-Li1,2; Zuo, F.1,2; Bai, Z-R1; Wang, R.1,2; Song, Y-H1; Hou, W.1; Li, Y-B1; Zhang, J-N1; Guo, Y-X1,2 |
| 刊名 | ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
 |
| 出版日期 | 2019 |
| 卷号 | 240期号:1页码:19 |
| 关键词 | methods: data analysis methods: statistical techniques: spectroscopic |
| ISSN号 | 0067-0049 |
| DOI | 10.3847/1538-4365/aaef3c |
| 英文摘要 | We present an empirical stellar spectra library created using spectra from the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) DR5. This library represents a uniform data set ranging from 3750 through 8500 K in effective temperature (T-eff), from 2.5 through + 1.0 dex in metallicity ([Fe/H]), and from 0 to 5.0 dex in gravity (log g). The spectra in the library have resolutions R similar to 1800, with well-calibrated fluxes and rest-framed wavelengths. Using a large number of red stars observed by LAMOST, we generated denser K-type templates to fill in data missing from current empirical spectral libraries, particularly the late K type. For K giants, we calibrated the spectroscopic surface gravities against the asteroseismic surface gravities. To verify the reliability of the parameters labeled for this library, we performed an internal cross-validation using a chi(2) minimization method to interpolate the parameters of each individual spectrum using the remaining spectra in the library. We obtained precisions of 41 K, 0.11 dex, and 0.05 dex for T-eff, log g, and [Fe/H], respectively, which means the templates are labeled with correct stellar parameters. Through external comparisons, we confirmed that measurements of the stellar parameters through this library can achieve accuracies of approximately 125 K in T-eff, 0.1 dex in [Fe/H] and 0.20 dex in log g without systematic offset. This empirical library is useful for stellar parameter measurements because it has large parameter coverage and full wavelength coverage from 3800 to 8900 angstrom. |
| WOS关键词 | STELLAR ATMOSPHERIC PARAMETERS ; NEWTON-TELESCOPE LIBRARY ; RESOLUTION ; DWARFS ; DR1 |
| 资助项目 | National Key Basic Research Program of China[2014CB845700] ; National Science Foundation of China[11703051] ; National Science Foundation of China[11703053] ; National Science Foundation of China[11390371] ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences[QYZDY-SSW-SLH007] ; National Development and Reform Commission |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000455829100001 |
| 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 Science Foundation of China ; National Science Foundation of China ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; 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 Science Foundation of China ; National Science Foundation of China ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; 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 Science Foundation of China ; National Science Foundation of China ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; 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 Science Foundation of China ; National Science Foundation of China ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; National Development and Reform Commission ; National Development and Reform Commission |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/24661]  |
| 专题 | 中国科学院国家天文台 |
| 通讯作者 | Luo, A-Li |
| 作者单位 | 1.Chinese Acad Sci, Natl Astron Observ, Key Lab Opt Astron, Beijing 100012, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Nanjing Inst Astron Opt & Technol, Natl Astron Observ, Nanjing 210042, Jiangsu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Du, Bing,Luo, A-Li,Zuo, F.,et al. An Empirical Template Library for FGK and Late-type A Stars Using LAMOST Observed Spectra[J]. ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,2019,240(1):19. |
| APA | Du, Bing.,Luo, A-Li.,Zuo, F..,Bai, Z-R.,Wang, R..,...&Zhao, Y-H.(2019).An Empirical Template Library for FGK and Late-type A Stars Using LAMOST Observed Spectra.ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,240(1),19. |
| MLA | Du, Bing,et al."An Empirical Template Library for FGK and Late-type A Stars Using LAMOST Observed Spectra".ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES 240.1(2019):19. |
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来源：国家天文台
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