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Tidally Enhanced Stellar Wind in Binaries as a Second Parameter for the Horizontal Branch Morphology of Globular Clusters
Han ZW(韩占文); Lei ZX(雷振新)
Source PublicationAstronomical Society of the Pacific (ASP) Conference Series - 6th Meeting on Hot Subdwarf Stars and Related Objects
2014-04
Volume481
Pages213-219
Author of SourceVanGrootel, V; Green, EM; Fontaine, G; Charpinet, S
Contribution Rank第1完成单位
Indexed By其他
Conference Name6th Meeting on Hot Subdwarf Stars and Related Objects
Conference Date2013-05-19
Conference PlaceSteward Observatory, University of Arizona, Tucson, Arizona, USA
Conference SponsorSteward Observ; Univ Arizona Fdn
Abstract

Metallicity is the first parameter to influence the horizontal branch morphology of globular clusters. It has been found, however, that some other parameters may also play an important role in affecting the morphology. While the nature of these other important parameters remains unclear, they are believed to be correlated with the mass loss during the red giant stages, from which the horizontal branch stars have descended. Unfortunately, the mass loss during the red giant stages of stellar evolution are poorly understood at present. In this talk, we investigate the physical consequences of tidally-enhanced stellar winds during the evolution of binary stars on enhancing the mass loss of red giant primaries, with accompanying effects for the horizontal branch morphology of globular clusters. In a binary system, the stellar wind of the red giant primary star may be largely enhanced by its companion star. Different separation of the binary system, however, will lead to a different mass loss rate of the primary star. We found that red, blue, and extreme horizontal branch stars are all produced under the effects of tidally-enhanced stellar wind without any additional assumptions on the mass loss dispersion. Furthermore, the horizontal branch morphology is found to be insensitive to the tidal enhancement parameter, B.

Funding ProjectNatural Science Foundation of China[11033008] ; Chinese Academy of Sciences[KJCX2-YW-T24]
Funding OrganizationNatural Science Foundation of China ; Chinese Academy of Sciences
Language英语
Subject Area天文学 ; 天体物理学 ; 恒星与银河系
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeProceedings Paper
PublisherASTRONOMICAL SOC PACIFIC
Publication Place390 ASHTON AVE, SAN FRANCISCO, CA 94112 USA
ISBN978-1-58381-846-6
URL查看原文
Archive Date2014-09-17
WOS IDWOS:000398425600028
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordSubdwarf-b-stars ; Evolution ; Origin ; Planets
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type会议论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/9651
Collection大样本恒星演化研究组
Corresponding AuthorHan ZW(韩占文)
AffiliationKey Laboratory for the Structure and Evolution of Celestial Objects, Yunnan Observatories, Chinese Academy of Sciences, Kunming, 650011, P.R. China
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Corresponding Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Han ZW,Lei ZX. Tidally Enhanced Stellar Wind in Binaries as a Second Parameter for the Horizontal Branch Morphology of Globular Clusters[C]//VanGrootel, V; Green, EM; Fontaine, G; Charpinet, S. 390 ASHTON AVE, SAN FRANCISCO, CA 94112 USA:ASTRONOMICAL SOC PACIFIC,2014:213-219.
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