An Empirical Template Library for FGK and Late-type A Stars Using LAMOST Observed Spectra

doi:10.3847/1538-4365/aaef3c

CORC > 国家天文台 > 中国科学院国家天文台

	An Empirical Template Library for FGK and Late-type A Stars Using LAMOST Observed Spectra
	Du, Bing 1,2; Luo, A-Li 1,2; Zuo, F.1,2; Bai, Z-R 1; Wang, R.1,2; Song, Y-H 1; Hou, W.1; Li, Y-B 1; Zhang, J-N 1; Guo, Y-X 1,2
刊名	ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
	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.
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关键词	STELLAR ATMOSPHERIC PARAMETERS ; NEWTON-TELESCOPE LIBRARY ; RESOLUTION ; DWARFS ; DR1
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000455829100001
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
内容类型	期刊论文
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.