NAOC Open IR
Most lithium-rich low-mass evolved stars revealed as red clump stars by asteroseismology and spectroscopy
Yan, Hong-Liang1; Zhou, Yu-Tao1,2,3; Zhang, Xianfei4; Li, Yaguang4,5,6; Gao, Qi1,7; Shi, Jian-Rong1,7; Zhao, Gang1,7; Aoki, Wako8,9; Matsuno, Tadafumi8,9,10; Li, Yan1,11; Xu, Xiao-Dong1; Li, Haining1; Wu, Ya-Qian1; Jin, Meng-Qi4; Mosser, Benoit12; Bi, Shao-Lan4; Fu, Jian-Ning4; Pan, Kaike13; Suda, Takuma14,15; Liu, Yu-Juan1; Zhao, Jing-Kun1; Liang, Xi-Long1,7
2020-10-05
Source PublicationNATURE ASTRONOMY
ISSN2397-3366
Pages10
AbstractAn asteroseismic and spectroscopic analysis of lithium-rich stars improves their classification based on the distributions of lithium, nitrogen and mass, and reveals that most of these evolved stars are red clump rather than red giant branch stars. Lithium has confused scientists for decades at almost every scale of the universe. Lithium-rich giants are peculiar stars with lithium abundances greater than model prediction. A large fraction of lithium-rich low-mass evolved stars are traditionally supposed to be red giant branch (RGB) stars. Recent studies, however, report that red clump (RC) stars are more frequent than RGB stars. Here, we present a uniquely large systematic study that combines direct asteroseismic analysis and spectroscopy of the lithium-rich stars. The majority of lithium-rich stars are confirmed to be RCs, whereas RGBs are a minority. We reveal that the distribution of lithium-rich RGBs declines steeply with increasing lithium abundance, with an upper limit of around 2.6 dex, whereas the lithium abundances of RCs extend to much higher values. We also find that the distributions of mass and nitrogen abundance are notably different between RC and RGB stars. These findings indicate that there is still an unknown process that significantly affects surface chemical composition in low-mass stellar evolution.
Funding OrganizationNational 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 ; Strategic Priority Research Program of the Chinese Academy of Sciences (CAS) ; Strategic Priority Research Program of the Chinese Academy of Sciences (CAS) ; International Partnership Program of the CAS ; International Partnership Program of the CAS ; Youth Innovation Promotion Association of the CAS ; Youth Innovation Promotion Association of the CAS ; Japan Society for the Promotion of Science (JSPS) ; Japan Society for the Promotion of Science (JSPS) ; Mt. Cuba Astronomical Foundation ; Mt. Cuba Astronomical Foundation ; JSPS-CAS joint research programme ; JSPS-CAS joint research programme ; Cultivation Project for LAMOST Scientific Payoff and Research Achievement of CAMS-CAS ; Cultivation Project for LAMOST Scientific Payoff and Research Achievement of CAMS-CAS ; Astronomical Big Data Joint Research Center ; Astronomical Big Data Joint Research Center ; National Astronomical Observatories of the CAS ; National Astronomical Observatories of the CAS ; Alibaba Cloud ; Alibaba Cloud ; National Development and Reform Commission ; National Development and Reform Commission ; 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 ; Strategic Priority Research Program of the Chinese Academy of Sciences (CAS) ; Strategic Priority Research Program of the Chinese Academy of Sciences (CAS) ; International Partnership Program of the CAS ; International Partnership Program of the CAS ; Youth Innovation Promotion Association of the CAS ; Youth Innovation Promotion Association of the CAS ; Japan Society for the Promotion of Science (JSPS) ; Japan Society for the Promotion of Science (JSPS) ; Mt. Cuba Astronomical Foundation ; Mt. Cuba Astronomical Foundation ; JSPS-CAS joint research programme ; JSPS-CAS joint research programme ; Cultivation Project for LAMOST Scientific Payoff and Research Achievement of CAMS-CAS ; Cultivation Project for LAMOST Scientific Payoff and Research Achievement of CAMS-CAS ; Astronomical Big Data Joint Research Center ; Astronomical Big Data Joint Research Center ; National Astronomical Observatories of the CAS ; National Astronomical Observatories of the CAS ; Alibaba Cloud ; Alibaba Cloud ; National Development and Reform Commission ; National Development and Reform Commission ; 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 ; Strategic Priority Research Program of the Chinese Academy of Sciences (CAS) ; Strategic Priority Research Program of the Chinese Academy of Sciences (CAS) ; International Partnership Program of the CAS ; International Partnership Program of the CAS ; Youth Innovation Promotion Association of the CAS ; Youth Innovation Promotion Association of the CAS ; Japan Society for the Promotion of Science (JSPS) ; Japan Society for the Promotion of Science (JSPS) ; Mt. Cuba Astronomical Foundation ; Mt. Cuba Astronomical Foundation ; JSPS-CAS joint research programme ; JSPS-CAS joint research programme ; Cultivation Project for LAMOST Scientific Payoff and Research Achievement of CAMS-CAS ; Cultivation Project for LAMOST Scientific Payoff and Research Achievement of CAMS-CAS ; Astronomical Big Data Joint Research Center ; Astronomical Big Data Joint Research Center ; National Astronomical Observatories of the CAS ; National Astronomical Observatories of the CAS ; Alibaba Cloud ; Alibaba Cloud ; National Development and Reform Commission ; National Development and Reform Commission ; 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 ; Strategic Priority Research Program of the Chinese Academy of Sciences (CAS) ; Strategic Priority Research Program of the Chinese Academy of Sciences (CAS) ; International Partnership Program of the CAS ; International Partnership Program of the CAS ; Youth Innovation Promotion Association of the CAS ; Youth Innovation Promotion Association of the CAS ; Japan Society for the Promotion of Science (JSPS) ; Japan Society for the Promotion of Science (JSPS) ; Mt. Cuba Astronomical Foundation ; Mt. Cuba Astronomical Foundation ; JSPS-CAS joint research programme ; JSPS-CAS joint research programme ; Cultivation Project for LAMOST Scientific Payoff and Research Achievement of CAMS-CAS ; Cultivation Project for LAMOST Scientific Payoff and Research Achievement of CAMS-CAS ; Astronomical Big Data Joint Research Center ; Astronomical Big Data Joint Research Center ; National Astronomical Observatories of the CAS ; National Astronomical Observatories of the CAS ; Alibaba Cloud ; Alibaba Cloud ; National Development and Reform Commission ; National Development and Reform Commission
DOI10.1038/s41550-020-01217-8
WOS KeywordKOLMOGOROV-SMIRNOV TEST ; GIANT BRANCH ; STELLAR EVOLUTION ; R STARS ; OSCILLATIONS ; ABUNDANCE ; ATMOSPHERES ; ENRICHMENT ; SIGNATURES ; ORIGIN
Language英语
Funding ProjectNational Key R&D Program of China[2019YFA0405502] ; National Natural Science Foundation of China[11988101] ; National Natural Science Foundation of China[11833006] ; National Natural Science Foundation of China[11833002] ; National Natural Science Foundation of China[11890694] ; National Natural Science Foundation of China[11973052] ; National Natural Science Foundation of China[11973042] ; National Natural Science Foundation of China[11603037] ; National Natural Science Foundation of China[11973049] ; Strategic Priority Research Program of the Chinese Academy of Sciences (CAS)[XDB34020205] ; International Partnership Program of the CAS[114A32KYSB20160049] ; Youth Innovation Promotion Association of the CAS[2019060] ; Japan Society for the Promotion of Science (JSPS)[18J11326] ; Mt. Cuba Astronomical Foundation ; JSPS-CAS joint research programme ; Cultivation Project for LAMOST Scientific Payoff and Research Achievement of CAMS-CAS ; Astronomical Big Data Joint Research Center ; National Astronomical Observatories of the CAS ; Alibaba Cloud ; National Development and Reform Commission
Funding OrganizationNational 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 ; Strategic Priority Research Program of the Chinese Academy of Sciences (CAS) ; Strategic Priority Research Program of the Chinese Academy of Sciences (CAS) ; International Partnership Program of the CAS ; International Partnership Program of the CAS ; Youth Innovation Promotion Association of the CAS ; Youth Innovation Promotion Association of the CAS ; Japan Society for the Promotion of Science (JSPS) ; Japan Society for the Promotion of Science (JSPS) ; Mt. Cuba Astronomical Foundation ; Mt. Cuba Astronomical Foundation ; JSPS-CAS joint research programme ; JSPS-CAS joint research programme ; Cultivation Project for LAMOST Scientific Payoff and Research Achievement of CAMS-CAS ; Cultivation Project for LAMOST Scientific Payoff and Research Achievement of CAMS-CAS ; Astronomical Big Data Joint Research Center ; Astronomical Big Data Joint Research Center ; National Astronomical Observatories of the CAS ; National Astronomical Observatories of the CAS ; Alibaba Cloud ; Alibaba Cloud ; National Development and Reform Commission ; National Development and Reform Commission ; 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 ; Strategic Priority Research Program of the Chinese Academy of Sciences (CAS) ; Strategic Priority Research Program of the Chinese Academy of Sciences (CAS) ; International Partnership Program of the CAS ; International Partnership Program of the CAS ; Youth Innovation Promotion Association of the CAS ; Youth Innovation Promotion Association of the CAS ; Japan Society for the Promotion of Science (JSPS) ; Japan Society for the Promotion of Science (JSPS) ; Mt. Cuba Astronomical Foundation ; Mt. Cuba Astronomical Foundation ; JSPS-CAS joint research programme ; JSPS-CAS joint research programme ; Cultivation Project for LAMOST Scientific Payoff and Research Achievement of CAMS-CAS ; Cultivation Project for LAMOST Scientific Payoff and Research Achievement of CAMS-CAS ; Astronomical Big Data Joint Research Center ; Astronomical Big Data Joint Research Center ; National Astronomical Observatories of the CAS ; National Astronomical Observatories of the CAS ; Alibaba Cloud ; Alibaba Cloud ; National Development and Reform Commission ; National Development and Reform Commission ; 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 ; Strategic Priority Research Program of the Chinese Academy of Sciences (CAS) ; Strategic Priority Research Program of the Chinese Academy of Sciences (CAS) ; International Partnership Program of the CAS ; International Partnership Program of the CAS ; Youth Innovation Promotion Association of the CAS ; Youth Innovation Promotion Association of the CAS ; Japan Society for the Promotion of Science (JSPS) ; Japan Society for the Promotion of Science (JSPS) ; Mt. Cuba Astronomical Foundation ; Mt. Cuba Astronomical Foundation ; JSPS-CAS joint research programme ; JSPS-CAS joint research programme ; Cultivation Project for LAMOST Scientific Payoff and Research Achievement of CAMS-CAS ; Cultivation Project for LAMOST Scientific Payoff and Research Achievement of CAMS-CAS ; Astronomical Big Data Joint Research Center ; Astronomical Big Data Joint Research Center ; National Astronomical Observatories of the CAS ; National Astronomical Observatories of the CAS ; Alibaba Cloud ; Alibaba Cloud ; National Development and Reform Commission ; National Development and Reform Commission ; 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 ; Strategic Priority Research Program of the Chinese Academy of Sciences (CAS) ; Strategic Priority Research Program of the Chinese Academy of Sciences (CAS) ; International Partnership Program of the CAS ; International Partnership Program of the CAS ; Youth Innovation Promotion Association of the CAS ; Youth Innovation Promotion Association of the CAS ; Japan Society for the Promotion of Science (JSPS) ; Japan Society for the Promotion of Science (JSPS) ; Mt. Cuba Astronomical Foundation ; Mt. Cuba Astronomical Foundation ; JSPS-CAS joint research programme ; JSPS-CAS joint research programme ; Cultivation Project for LAMOST Scientific Payoff and Research Achievement of CAMS-CAS ; Cultivation Project for LAMOST Scientific Payoff and Research Achievement of CAMS-CAS ; Astronomical Big Data Joint Research Center ; Astronomical Big Data Joint Research Center ; National Astronomical Observatories of the CAS ; National Astronomical Observatories of the CAS ; Alibaba Cloud ; Alibaba Cloud ; National Development and Reform Commission ; National Development and Reform Commission
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000575344500001
PublisherNATURE RESEARCH
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/81627
Collection中国科学院国家天文台
Corresponding AuthorShi, Jian-Rong; Zhao, Gang
Affiliation1.Chinese Acad Sci, Key Lab Opt Astron, Natl Astron Observ China, Beijing, Peoples R China
2.Peking Univ, Sch Phys, Dept Astron, Beijing, Peoples R China
3.Peking Univ, Kavli Inst Astron & Astrophys, Beijing, Peoples R China
4.Beijing Normal Univ, Dept Astron, Beijing, Peoples R China
5.Univ Sydney, Sydney Inst Astron SIfA, Sch Phys, Sydney, NSW, Australia
6.Aarhus Univ, Aarhus Ctr, Dept Phys & Astron, Stellar Astrophys Ctr, Aarhus, Denmark
7.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing, Peoples R China
8.Natl Astron Observ Japan, Tokyo, Japan
9.Grad Univ Adv Studies SOKENDAI, Sch Phys Sci, Dept Astron Sci, Tokyo, Japan
10.Univ Groningen, Kapteyn Astron Inst, Groningen, Netherlands
11.Chinese Acad Sci, Yunnan Astron Observ, Kunming, Yunnan, Peoples R China
12.Univ Paris, Sorbonne Univ, Univ PSL, CNRS,LESIA,Observ Paris, Meudon, France
13.New Mexico State Univ, Apache Point Observ, Sunspot, NM USA
14.Open Univ Japan, Chiba, Japan
15.Univ Tokyo, Res Ctr Early Universe, Tokyo, Japan
Recommended Citation
GB/T 7714
Yan, Hong-Liang,Zhou, Yu-Tao,Zhang, Xianfei,et al. Most lithium-rich low-mass evolved stars revealed as red clump stars by asteroseismology and spectroscopy[J]. NATURE ASTRONOMY,2020:10.
APA Yan, Hong-Liang.,Zhou, Yu-Tao.,Zhang, Xianfei.,Li, Yaguang.,Gao, Qi.,...&Liang, Xi-Long.(2020).Most lithium-rich low-mass evolved stars revealed as red clump stars by asteroseismology and spectroscopy.NATURE ASTRONOMY,10.
MLA Yan, Hong-Liang,et al."Most lithium-rich low-mass evolved stars revealed as red clump stars by asteroseismology and spectroscopy".NATURE ASTRONOMY (2020):10.
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