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Mass and age of red giant branch stars observed with LAMOST and Kepler
Wu, Yaqian1; Xiang, Maosheng2; Bi, Shaolan1; Liu, Xiaowei3; Yu, Jie4,5; Hon, Marc6; Sharma, Sanjib4; Li, Tanda2,4,5; Huang, Yang; Liu, Kang1; Zhang, Xianfei1; Li, Yaguang1; Ge, Zhishuai1; Tian, Zhijia; Zhang, Jinghua1; Zhang, Jianwei1
2018-04-01
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
ISSN0035-8711
Volume475Issue:3Pages:3633-3643
AbstractObtaining accurate and precise masses and ages for large numbers of giant stars is of great importance for unraveling the assemblage history of the Galaxy. In this paper, we estimate masses and ages of 6940 red giant branch (RGB) stars with asteroseismic parameters deduced from Kepler photometry and stellar atmospheric parameters derived from LAMOST spectra. The typical uncertainties of mass is a few per cent, and that of age is similar to 20 per cent. The sample stars reveal two separate sequences in the age-[alpha/Fe] relation - a high-alpha sequence with stars older than similar to 8 Gyr and a low-alpha sequence composed of stars with ages ranging from younger than 1 Gyr to older than 11 Gyr. We further investigate the feasibility of deducing ages and masses directly from LAMOST spectra with a machine learning method based on kernel based principal component analysis, taking a sub-sample of these RGB stars as a training data set. We demonstrate that ages thus derived achieve an accuracy of similar to 24 per cent. We also explored the feasibility of estimating ages and masses based on the spectroscopically measured carbon and nitrogen abundances. The results are quite satisfactory and significantly improved compared to the previous studies.
Keywordasteroseismology stars: evolution stars: fundamental parameters
Funding OrganizationNational Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Youth Scholars Program of Beijing Normal University ; Youth Scholars Program of Beijing Normal University ; National Development and Reform Commission ; National Development and Reform Commission ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Youth Scholars Program of Beijing Normal University ; Youth Scholars Program of Beijing Normal University ; National Development and Reform Commission ; National Development and Reform Commission ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Youth Scholars Program of Beijing Normal University ; Youth Scholars Program of Beijing Normal University ; National Development and Reform Commission ; National Development and Reform Commission ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Youth Scholars Program of Beijing Normal University ; Youth Scholars Program of Beijing Normal University ; National Development and Reform Commission ; National Development and Reform Commission
DOI10.1093/mnras/stx3296
WOS KeywordSTELLAR ATMOSPHERIC PARAMETERS ; CHEMICAL EVOLUTION ; SOLAR NEIGHBORHOOD ; COMPONENT ANALYSIS ; TELESCOPE LAMOST ; K2 MISSION ; ASTEROSEISMOLOGY ; OSCILLATIONS ; ABUNDANCES ; ISOCHRONES
Language英语
Funding ProjectNational Natural Science Foundation of China (NSFC)[U1631236] ; Chinese Academy of Sciences (CAS)[U1631236] ; National Natural Science Foundation of China[11273007] ; National Natural Science Foundation of China[10933002] ; Fundamental Research Funds for the Central Universities ; Youth Scholars Program of Beijing Normal University ; National Development and Reform Commission
Funding OrganizationNational Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Youth Scholars Program of Beijing Normal University ; Youth Scholars Program of Beijing Normal University ; National Development and Reform Commission ; National Development and Reform Commission ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Youth Scholars Program of Beijing Normal University ; Youth Scholars Program of Beijing Normal University ; National Development and Reform Commission ; National Development and Reform Commission ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Youth Scholars Program of Beijing Normal University ; Youth Scholars Program of Beijing Normal University ; National Development and Reform Commission ; National Development and Reform Commission ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Youth Scholars Program of Beijing Normal University ; Youth Scholars Program of Beijing Normal University ; National Development and Reform Commission ; National Development and Reform Commission
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000427141900054
PublisherOXFORD UNIV PRESS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/37125
Collection中国科学院国家天文台
Corresponding AuthorWu, Yaqian; Xiang, Maosheng; Bi, Shaolan
Affiliation1.Beijing Normal Univ, Dept Astron, Beijing 100875, Peoples R China
2.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
3.Peking Univ, Dept Astron, Beijing 100871, Peoples R China
4.Univ Sydney, Sch Phys, Sydney, NSW 2000, Australia
5.Aarhus Univ, Dept Phys & Astron, Stellar Astrophys Ctr, Ny Munkegade 120, DK-8000 Aarhus C, Denmark
6.Univ New South Wales, Sch Phys, Sydney, NSW 2052, Australia
Recommended Citation
GB/T 7714
Wu, Yaqian,Xiang, Maosheng,Bi, Shaolan,et al. Mass and age of red giant branch stars observed with LAMOST and Kepler[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2018,475(3):3633-3643.
APA Wu, Yaqian.,Xiang, Maosheng.,Bi, Shaolan.,Liu, Xiaowei.,Yu, Jie.,...&Zhang, Jianwei.(2018).Mass and age of red giant branch stars observed with LAMOST and Kepler.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,475(3),3633-3643.
MLA Wu, Yaqian,et al."Mass and age of red giant branch stars observed with LAMOST and Kepler".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 475.3(2018):3633-3643.
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