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Lithium depletion in late-type dwarfs
Xiong, D. R.1; Deng, L.2
2009-06-01
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Volume395Issue:4Pages:2013-2028
AbstractUsing a self-consistent dynamic theory of non-local convection, the atmospheric lithium-abundance depletion values of a series of stellar evolutionary models with M = 0.725-1.5 M(circle dot) are calculated, and the results show that the general observed properties of lithium abundance in lower-main-sequence stars can be reproduced by overshooting mixing and gravitational settling. After a careful study of the mechanisms of lithium depletion in stars, it is concluded that overshooting mixing and microdiffusion induced by gravitational settling and radiative acceleration are the two primary depletion mechanisms: for warm stars with M = 1.1 M(circle dot) (or T(e) = 6100 K) microdiffusion dominates, while it is the other way round for cooler objects with M <= 1 M(circle dot) (or T(e) <= 5800 K).
KeywordConvection Stars: Abundances Stars: Evolution Stars: Late-type Open Clusters And Associations: General
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1111/j.1365-2966.2009.14581.x
WOS KeywordSOLAR-TYPE STARS ; ALPHA-PERSEI CLUSTER ; MAIN-SEQUENCE STARS ; OLD OPEN CLUSTERS ; HYADES-F-STARS ; NONLOCAL CONVECTION ; STELLAR EVOLUTION ; RADIATIVE ACCELERATIONS ; LI ABUNDANCE ; MODELS
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000266112600019
Citation statistics
Cited Times:30[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/15935
Collection院士文集_熊大闰
Affiliation1.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China
2.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
Recommended Citation
GB/T 7714
Xiong, D. R.,Deng, L.. Lithium depletion in late-type dwarfs[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2009,395(4):2013-2028.
APA Xiong, D. R.,&Deng, L..(2009).Lithium depletion in late-type dwarfs.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,395(4),2013-2028.
MLA Xiong, D. R.,et al."Lithium depletion in late-type dwarfs".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 395.4(2009):2013-2028.
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