NAOC Open IR  > 太阳物理研究部
Stellar parameters of main sequence turn-off star candidates observed with LAMOST and Kepler
Wu, Ya-Qian1; Xiang, Mao-Sheng2; Zhang, Xian-Fei1; Li, Tan-Da2; Bi, Shao-Lan1; Liu, Xiao-Wei3; Fu, Jian-Ning1; Huang, Yang3; Tian, Zhi-Jia3; Liu, Kang1; Ge, Zhi-Shuai1; He, Xin1; Zhang, Jing-Hua1
2017
Source PublicationRESEARCH IN ASTRONOMY AND ASTROPHYSICS
Volume17Issue:1
AbstractMain sequence turn-off (MSTO) stars have advantages as indicators of Galactic evolution since their ages can be robustly estimated from atmospheric panuneters. Hundreds of thousands of MSTO stars have been selected from the LAMOST Galactic survey to study the evolution of the Galaxy, and it is vital to derive accurate stellar parameters. In this work, we select 150 MSTO star candidates from the MSTO star sample of Xiang that have asteroseismic parameters and determine accurate stellar parameters for these stars by combining asteroseismic parameters deduced froth Kepler photometry and atmospheric parameters deduced from LAMOST spectra. With this simple, we examine the age determination as well as the contamination rate of the MSTO star sample. A comparison of age between this work and Xiang shows a mean difference of 0.53 Gyr (7%) and a dispersion of 2.71 Gyr (28%). The results show that 79 of the candidates are MSTO stars, while the others are contaminations from either main sequence or sub-giant stars. The contamination rate for the oldest stars is much higher than that for younger stars. The main cause for the high contamination rate is found to be the relatively large systematic bias in the LAMOST surface gravity estimates.
SubtypeArticle
KeywordStars: Fundamental Parameters Stars: Evolution Stars: Asteroseismology
WOS HeadingsScience & Technology ; Physical Sciences
Funding OrganizationNational Development and Reform Commission ; National Development and Reform Commission ; National Natural Science Foundation of China(11273007 ; National Natural Science Foundation of China(11273007 ; Joint Research Fund in Astronomy under cooperative agreement(U1631236) ; Joint Research Fund in Astronomy under cooperative agreement(U1631236) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; 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 ; 10933002) ; 10933002) ; National Development and Reform Commission ; National Development and Reform Commission ; National Natural Science Foundation of China(11273007 ; National Natural Science Foundation of China(11273007 ; Joint Research Fund in Astronomy under cooperative agreement(U1631236) ; Joint Research Fund in Astronomy under cooperative agreement(U1631236) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; 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 ; 10933002) ; 10933002)
DOI10.1088/1674-4527/17/1/5
WOS KeywordSOLAR-LIKE OSCILLATIONS ; 1ST DATA RELEASE ; RED GIANTS ; ELEMENT DIFFUSION ; EVOLUTION ; ASTEROSEISMOLOGY ; METALLICITY ; ROTATION ; CLUSTERS ; TEMPERATURE
Indexed BySCI
Language英语
Funding OrganizationNational Development and Reform Commission ; National Development and Reform Commission ; National Natural Science Foundation of China(11273007 ; National Natural Science Foundation of China(11273007 ; Joint Research Fund in Astronomy under cooperative agreement(U1631236) ; Joint Research Fund in Astronomy under cooperative agreement(U1631236) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; 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 ; 10933002) ; 10933002) ; National Development and Reform Commission ; National Development and Reform Commission ; National Natural Science Foundation of China(11273007 ; National Natural Science Foundation of China(11273007 ; Joint Research Fund in Astronomy under cooperative agreement(U1631236) ; Joint Research Fund in Astronomy under cooperative agreement(U1631236) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; 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 ; 10933002) ; 10933002)
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000396489000005
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/8260
Collection太阳物理研究部
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
Recommended Citation
GB/T 7714
Wu, Ya-Qian,Xiang, Mao-Sheng,Zhang, Xian-Fei,et al. Stellar parameters of main sequence turn-off star candidates observed with LAMOST and Kepler[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2017,17(1).
APA Wu, Ya-Qian.,Xiang, Mao-Sheng.,Zhang, Xian-Fei.,Li, Tan-Da.,Bi, Shao-Lan.,...&Zhang, Jing-Hua.(2017).Stellar parameters of main sequence turn-off star candidates observed with LAMOST and Kepler.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,17(1).
MLA Wu, Ya-Qian,et al."Stellar parameters of main sequence turn-off star candidates observed with LAMOST and Kepler".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 17.1(2017).
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