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Meridional Circulation. II. A Unified Mechanism for Lithium Depletion in Solar Analogs and the Lithium Dip in Mid-F Cluster Stars

文献类型：期刊论文

作者Li XF(李雪峰)3; Shi, Jian-Rong1,7; Li Y(李焱)3,4,5,7; Yan, Hong-Liang1,2,7; Zhang, Jing-Hua6
刊名ASTROPHYSICAL JOURNAL
出版日期2025-10-01
卷号991期号:2
ISSN号0004-637X
DOI10.3847/1538-4357/adfdd5
产权排序第1完成单位
文献子类Article
英文摘要The behavior of lithium (Li) in Population I main-sequence stars challenges standard stellar theory. Two phenomena stand out: the solar Li problem, which extends to Li depletion in solar analogs, and the Li dip observed in mid-F stars within open clusters. Building on the meridional-circulation-driven radial mixing framework previously developed to explain Li-enriched red clump stars, we explore its relevance to Li depletion on the main sequence. First, our models reproduce the observed A(Li)-age correlation in solar analogs. Through detailed isochrone analysis, we find good agreement between the simulated and observed A(Li)-Teff relationships within the solar analog parameter space. However, the predicted solar Li abundance (similar to 1.5 dex) is still higher than current solar measurements. Second, our models partially explain the Li dip phenomenon in mid-F cluster stars. The models accurately reproduce Li distributions on the cool side of the Li dip in most clusters and capture the Li behaviors on the hot side observed in systems like the Hyades. However, we identify limitations in the models' ability to fully reproduce the dip morphology, particularly due to the rotation velocity distribution of sample stars in this temperature zone.
学科主题天文学 ; 恒星与银河系
URL标识查看原文
出版地TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
WOS关键词WIYN OPEN CLUSTER ; LOW-MASS STARS ; MAIN-SEQUENCE ; STELLAR EVOLUTION ; CONVECTIVE ENVELOPE ; INTERNAL-ROTATION ; ABUNDANCE GAP ; LI ABUNDANCES ; MIXING LENGTH ; HYADES
资助项目National Basic Science Center Project of China[12288102]; National Natural Science Foundation of China[12503043]; National Natural Science Foundation of China[11973079]; National Natural Science Foundation of China[12133011]; National Natural Science Foundation of China[11973052]; National Natural Science Foundation of China[12022304]; National Natural Science Foundation of China[12090040]; National Natural Science Foundation of China[12090044]; National Natural Science Foundation of China[12173080]; National Natural Science Foundation of China[12273104]; National Natural Science Foundation of China[12373036]; National Key R&D Program of China[2021YFA1600400]; National Key R&D Program of China[2021YFA1600402]; Natural Science Foundation of Yunnan Province[202201AT070158]; Yunnan Fundamental Research Projects[202401AS070045]; Youth Innovation Promotion Association of the CAS; NAOC Nebula Talents Program; NSFC[12103063]; China Postdoctoral Science Foundation[2020M680672]
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:001577917600001
出版者IOP Publishing Ltd
资助机构National Basic Science Center Project of China[12288102] ; National Natural Science Foundation of China[12503043, 11973079, 12133011, 11973052, 12022304, 12090040, 12090044, 12173080, 12273104, 12373036] ; National Key R&D Program of China[2021YFA1600400, 2021YFA1600402] ; Natural Science Foundation of Yunnan Province[202201AT070158] ; Yunnan Fundamental Research Projects[202401AS070045] ; Youth Innovation Promotion Association of the CAS ; NAOC Nebula Talents Program ; NSFC[12103063] ; China Postdoctoral Science Foundation[2020M680672]
版本出版稿
源URL[http://ir.ynao.ac.cn/handle/114a53/28621]  
专题云南天文台_恒星物理研究组
通讯作者Li XF(李雪峰)
作者单位1.CAS Key Laboratory of Optical Astronomy, National Astronomical Observatories, Beijing 100101, People’s Republic of China;
2.Institute for Frontiers in Astronomy and Astrophysics, Beijing Normal University, Beijing 102206, People’s Republic of China;
3.Yunnan Observatories, Chinese Academy of Sciences, P.O. Box110, Kunming 650216, People’s Republic of China; lixuefeng@ynao.ac.cn;
4.Key Laboratory for Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, P.O. Box 110, Kunming 650216, People’s Republic of China;
5.Center for Astronomical Mega-Science, Chinese Academy of Sciences, Beijing 100012, People’s Republic of China;
6.South-Western Institute for Astronomy Research, Yunnan University, Chenggong District, Kunming 650500, People’s Republic of China
7.University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China;
推荐引用方式
GB/T 7714		 Li XF,Shi, Jian-Rong,Li Y,et al. Meridional Circulation. II. A Unified Mechanism for Lithium Depletion in Solar Analogs and the Lithium Dip in Mid-F Cluster Stars[J]. ASTROPHYSICAL JOURNAL,2025,991(2).
APA 李雪峰,Shi, Jian-Rong,李焱,Yan, Hong-Liang,&Zhang, Jing-Hua.(2025).Meridional Circulation. II. A Unified Mechanism for Lithium Depletion in Solar Analogs and the Lithium Dip in Mid-F Cluster Stars.ASTROPHYSICAL JOURNAL,991(2).
MLA 李雪峰,et al."Meridional Circulation. II. A Unified Mechanism for Lithium Depletion in Solar Analogs and the Lithium Dip in Mid-F Cluster Stars".ASTROPHYSICAL JOURNAL 991.2(2025).

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来源：云南天文台

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