Convective mixing: the formation channel of Li-rich giants

doi:10.1093/mnras/stae639

	Convective mixing: the formation channel of Li-rich giants
	Li XF(李雪峰)2,5; Shi, Jian-Rong 3,4; Li Y(李焱)2,5,6,8; Yan, Hong-Liang 1,3,4; Zhang, Jing-Hua 7
刊名	Monthly Notices of the Royal Astronomical Society
	2024-04-01
卷号	529 期号:2 页码:1423-1439
关键词	convection stars: abundances stars: evolution
ISSN号	0035-8711
DOI	10.1093/mnras/stae639
产权排序	第1完成单位
文献子类	Article
英文摘要	Increasing observed data indicate that part of giants has abnormally high lithium (Li) inside their surface, and their proportion is around 1 per cent. Instead of pursuing the feasible mechanisms for extra Li enrichment, we focus on how to inhibit Li depletion from the main-sequence phase of giants. With this in mind, we find that convective mixing is capable of achieving this goal and forming Li-rich giants, which is mainly attributed to the convection model with the convective boundary defined by the Ledoux criterion. Another factor in the formation of Li-rich giants in our convection models is related to the Li abundances of their progenitors. If the Li abundances of the progenitors exceed the meteoritic value (), then the majority of giants will be rich in Li. This is the general pattern of stellar Li abundance evolution without factoring in extra Li depletion. We propose that other Li depletion processes should also be adopted in the future, as they may be the key to the 1 per cent puzzle. © 2024 The Author(s). Published by Oxford University Press on behalf of Royal Astronomical Society.
学科主题	天文学
URL标识	查看原文
出版地	GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
资助项目	National Natural Science Foundation of China[11973079]; National Natural Science Foundation of China[12133011]; National Natural Science Foundation of China[11833006]; 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[2019YFA0405502]; National Key R&D Program of China[2021YFA1600400]; National Key R&D Program of China[2021YFA1600402]; National Basic Science Center Project of China[12288102]; Natural Science Foundation of Yunnan Province[202201AT070158]; Yunnan Fundamental Research Projects[202401AS070045]; Youth Innovation Promotion Association of CAS; NAOC Nebula Talents Program; NSFC[12103063]; China Postdoctoral Science Foundation[2020M680672]
WOS关键词	CARBON-ISOTOPE RATIOS ; RED CLUMP STARS ; LITHIUM ABUNDANCES ; STELLAR EVOLUTION ; THERMOHALINE CONVECTION ; MAIN-SEQUENCE ; PHOTOSPHERIC COMPOSITION ; OPEN CLUSTERS ; GALAH SURVEY ; SOLAR TWINS
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	OXFORD UNIV PRESS
WOS记录号	WOS:001183341100005
资助机构	National Natural Science Foundation of China[11973079, 12133011, 11833006, 11973052, 12022304, 12090040, 12090044, 12173080, 12273104, 12373036] ; National Key R&D Program of China[2019YFA0405502, 2021YFA1600400, 2021YFA1600402] ; National Basic Science Center Project of China[12288102] ; Natural Science Foundation of Yunnan Province[202201AT070158] ; Yunnan Fundamental Research Projects[202401AS070045] ; Youth Innovation Promotion Association of CAS ; NAOC Nebula Talents Program ; NSFC[12103063] ; China Postdoctoral Science Foundation[2020M680672]
内容类型	期刊论文
源URL	[http://ir.ynao.ac.cn/handle/114a53/26562]
专题	云南天文台_恒星物理研究组
作者单位	1.Institute for Frontiers in Astronomy and Astrophysics, Beijing Normal University, Beijing, 102206, China; 2.Yunnan Observatories, Chinese Academy of Sciences, PO Box 110, Kunming, 650216, China; 3.Cas Key Laboratory of Optical Astronomy, National Astronomical Observatories, Beijing, 100101, China; 4.School of Astronomy and Space Science, University of Chinese Academy of Sciences, Beijing, 100049, China; 5.University of Chinese Academy of Sciences, Beijing, 100049, China; 6.Key Laboratory for Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, PO Box 110, Kunming, 650216, China; 7.South-Western Institute for Astronomy Research, Yunnan University, Chenggong District, Kunming, 650500, China 8.Center for Astronomical Mega-Science, Chinese Academy of Sciences, Beijing, 100012, China;
推荐引用方式 GB/T 7714	Li XF,Shi, Jian-Rong,Li Y,et al. Convective mixing: the formation channel of Li-rich giants[J]. Monthly Notices of the Royal Astronomical Society,2024,529(2):1423-1439.
APA	李雪峰,Shi, Jian-Rong,李焱,Yan, Hong-Liang,&Zhang, Jing-Hua.(2024).Convective mixing: the formation channel of Li-rich giants.Monthly Notices of the Royal Astronomical Society,529(2),1423-1439.
MLA	李雪峰,et al."Convective mixing: the formation channel of Li-rich giants".Monthly Notices of the Royal Astronomical Society 529.2(2024):1423-1439.