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Estimating Stellar Atmospheric Parameters from the LAMOST DR6 Spectra with SCDD Model
Xiang, Guanjie1; Chen, Jianjun2; Qiu, Bo1; Lu, Yakun1
2021-02-01
Source PublicationPUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC
ISSN0004-6280
Volume133Issue:1020Pages:12
AbstractAccurate and efficient determination of stellar atmospheric parameters (T-eff, logg, [Fe/H]) is essential for large-scale sky survey to conduct Galactic archeology and stellar evolution history. This paper proposes a novel data-driven model based on statistical features and Catboost algorithm (SCDD). The model extracts the statistical features of the spectra by windows, and constructs a nonlinear mapping based on the Catboost algorithm between the spectral features and the stellar parameters. After being trained using LAMOST DR6 spectral data set, the SCDD showed excellent results in the estimation of the stellar parameters. In the condition of that the g-band signal-to-noise ratio (S/Ng) is higher than 100, the root mean square errors (RMSEs) of T-eff, logg, and [Fe/H] are 36 K, 0.077 dex and 0.037 dex, respectively. Compared with the StarNet and Cannon2 models, SCDD performs better in mean absolute error and RMSE, which proves its good fitting ability. In addition, this paper compares the parameters estimated by the SCDD with those of APOGEE. The results are in good agreement, which shows that the model we proposed is reliable.
KeywordFundamental parameters of stars Astronomy data analysis Statistical parallax Surveys
Funding OrganizationJoint Research Fund in Astronomy, National Natural Science Foundation of China ; Joint Research Fund in Astronomy, National Natural Science Foundation of China ; Natural Science Foundation of Hebei ; Natural Science Foundation of Hebei ; National Key R&D Program of China ; National Key R&D 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 ; Joint Research Fund in Astronomy, National Natural Science Foundation of China ; Joint Research Fund in Astronomy, National Natural Science Foundation of China ; Natural Science Foundation of Hebei ; Natural Science Foundation of Hebei ; National Key R&D Program of China ; National Key R&D 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 ; Joint Research Fund in Astronomy, National Natural Science Foundation of China ; Joint Research Fund in Astronomy, National Natural Science Foundation of China ; Natural Science Foundation of Hebei ; Natural Science Foundation of Hebei ; National Key R&D Program of China ; National Key R&D 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 ; Joint Research Fund in Astronomy, National Natural Science Foundation of China ; Joint Research Fund in Astronomy, National Natural Science Foundation of China ; Natural Science Foundation of Hebei ; Natural Science Foundation of Hebei ; National Key R&D Program of China ; National Key R&D 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
DOI10.1088/1538-3873/abd997
Language英语
Funding ProjectJoint Research Fund in Astronomy, National Natural Science Foundation of China[U1931134] ; Natural Science Foundation of Hebei[A2020202001] ; National Key R&D Program of China[2019YFA0405102] ; National Natural Science Foundation of China[11973060] ; National Natural Science Foundation of China[12090044] ; National Development and Reform Commission
Funding OrganizationJoint Research Fund in Astronomy, National Natural Science Foundation of China ; Joint Research Fund in Astronomy, National Natural Science Foundation of China ; Natural Science Foundation of Hebei ; Natural Science Foundation of Hebei ; National Key R&D Program of China ; National Key R&D 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 ; Joint Research Fund in Astronomy, National Natural Science Foundation of China ; Joint Research Fund in Astronomy, National Natural Science Foundation of China ; Natural Science Foundation of Hebei ; Natural Science Foundation of Hebei ; National Key R&D Program of China ; National Key R&D 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 ; Joint Research Fund in Astronomy, National Natural Science Foundation of China ; Joint Research Fund in Astronomy, National Natural Science Foundation of China ; Natural Science Foundation of Hebei ; Natural Science Foundation of Hebei ; National Key R&D Program of China ; National Key R&D 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 ; Joint Research Fund in Astronomy, National Natural Science Foundation of China ; Joint Research Fund in Astronomy, National Natural Science Foundation of China ; Natural Science Foundation of Hebei ; Natural Science Foundation of Hebei ; National Key R&D Program of China ; National Key R&D 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
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000617564900001
PublisherIOP PUBLISHING LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/79499
Collection中国科学院国家天文台
Corresponding AuthorXiang, Guanjie
Affiliation1.Hebei Univ Technol, Sch Elect & Informat Engn, Tianjin 300401, Peoples R China
2.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
Recommended Citation
GB/T 7714
Xiang, Guanjie,Chen, Jianjun,Qiu, Bo,et al. Estimating Stellar Atmospheric Parameters from the LAMOST DR6 Spectra with SCDD Model[J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC,2021,133(1020):12.
APA Xiang, Guanjie,Chen, Jianjun,Qiu, Bo,&Lu, Yakun.(2021).Estimating Stellar Atmospheric Parameters from the LAMOST DR6 Spectra with SCDD Model.PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC,133(1020),12.
MLA Xiang, Guanjie,et al."Estimating Stellar Atmospheric Parameters from the LAMOST DR6 Spectra with SCDD Model".PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC 133.1020(2021):12.
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