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LASPM: the LAMOST stellar parameter pipeline for M-type stars and application to the sixth and seventh data release (DR6 and DR7)
Du, Bing1; Luo, A-Li1,2; Zhang, Shuo3; Kong, Xiao1; Guo, Yan-Xin1; Li, Yin-Bi1,2; Zuo, Fang1,2; Wang, You-Fen1; Chen, Jian-Jun1; Zhao, Yong-Heng1,2
2021-10-01
Source PublicationRESEARCH IN ASTRONOMY AND ASTROPHYSICS
ISSN1674-4527
Volume21Issue:8Pages:12
AbstractThe molecular-rich atmospheres of M type stars complicate our understanding to their atmospheric properties. Recently, great progress has been made in atmospheric modeling of M-type stars, and we take advantage of the updated BT-Settl model grid to develop a pipeline LASPM to measure atmospheric parameters (T (eff), log g, [M/H]) of M-type stars from low-resolution spectra. The pipeline was applied to the sixth and seventh data release (DR6 & DR7) of Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST), which released atmospheric parameters for 610 419 and 680 185 M-type spectra, respectively. The key algorithm is to find the best-matching for templates in the synthetic spectral library for an observed spectrum, and then minimizing chi (2) through a linear combination of five best-matching templates. The intrinsic precisions of the parameters were estimated by using the multiple epoch observations for the same stars, which are 118 K, 0.20 dex, 0.29 dex for T (eff), log g, and [M/H] respectively. The T (eff) and log g are consistent with the spectral and luminosity classifications by LAMOST 1D pipeline, and the loci of giants and dwarfs both on spectral index and color-magnitude diagrams show the validity. The metallicities of LASPM are also checked with the selected members of four open clusters (NGC 2632, Melotte 22, ASCC_16, and ASCC_19), which are consistent without any bias. Comparing the results between LASPM and the APOGEE Stellar Parameter and Chemical Abundance Pipeline (ASPCAP), there is a scatter of 73 K, 0.22 dex, 0.21 dex for T (eff), log g, and [M/H], respectively.
Keywordatmospheric parameters data analysis spectrographs
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Development and Reform Commission ; National Development and Reform Commission ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Development and Reform Commission ; National Development and Reform Commission ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Development and Reform Commission ; National Development and Reform Commission ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Development and Reform Commission ; National Development and Reform Commission
DOI10.1088/1674-4527/21/8/202
WOS KeywordLOW-MASS STARS ; MODEL ATMOSPHERES ; LINE LIST ; SYSTEM ; 3D
Language英语
Funding ProjectNational Natural Science Foundation of China[U1931209] ; National Natural Science Foundation of China[12090044] ; National Key R&D Program of China[2019YFA0405502] ; National Key R&D Program of China[2019YFA0405102] ; National Development and Reform Commission
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Development and Reform Commission ; National Development and Reform Commission ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Development and Reform Commission ; National Development and Reform Commission ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Development and Reform Commission ; National Development and Reform Commission ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Development and Reform Commission ; National Development and Reform Commission
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000711659500001
PublisherNATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/74419
Collection中国科学院国家天文台
Corresponding AuthorLuo, A-Li
Affiliation1.Natl Astron Observ, CAS Key Lab Opt Astron, Beijing 100101, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Peking Univ, Sch Phys, Dept Astron, Beijing 100871, Peoples R China
Recommended Citation
GB/T 7714
Du, Bing,Luo, A-Li,Zhang, Shuo,et al. LASPM: the LAMOST stellar parameter pipeline for M-type stars and application to the sixth and seventh data release (DR6 and DR7)[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2021,21(8):12.
APA Du, Bing.,Luo, A-Li.,Zhang, Shuo.,Kong, Xiao.,Guo, Yan-Xin.,...&Zhao, Yong-Heng.(2021).LASPM: the LAMOST stellar parameter pipeline for M-type stars and application to the sixth and seventh data release (DR6 and DR7).RESEARCH IN ASTRONOMY AND ASTROPHYSICS,21(8),12.
MLA Du, Bing,et al."LASPM: the LAMOST stellar parameter pipeline for M-type stars and application to the sixth and seventh data release (DR6 and DR7)".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 21.8(2021):12.
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