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Close-in companions to contact binary stars
Qian SB(钱声帮)1,2; Zhu LY(朱俐颖)1,2; M. Zejda3; Z. Mikulášek3; Wang JJ(王晶晶)1,2; Liu NP(刘念平)1,2
Source PublicationEAS Publications Series - Proceedings of the conference “Setting a New Standard in the Analysis of Binary Stars”
2013-02
Volume64
Pages131-134
DOI10.1051/eas/1364018
Author of SourceK. Pavlovski, A. Tkachenko and G. Torres
Contribution Rank第1完成单位
Indexed By其他
Conference NameSetting a New Standard in the Analysis of Binary Stars
Conference DateN/A
Conference PlaceN/A
Abstract

W UMa-type contact binaries are composed of two late-type main-sequence stars, where both components are filling their critical Roche Lobes and sharing a common convective envelope. Their formation and evolution are unsolved problems in stellar astrophysics. This kind of binary systems have the lowest angular momentum and shortest orbital periods among main-sequence binaries. One of the possibilities for their origin is that the angular momentums of binary stars are transferred from the central binaries to close-in companions. In this paper, we will summarize some of our recent progresses on searching for close-in companions to contact binary stars, including the closest stellar companion to a contact binary at an orbital separation of about 0.8 AU. Then, based on the observational properties of those close-in companions, the formation and the evolution of contact binaries will be discussed.

Funding ProjectChinese Natural Science Foundation through a key project[11133007] ; Ministry of Education of the Czech Republic[LH12175]
Funding OrganizationChinese Natural Science Foundation through a key project ; Ministry of Education of the Czech Republic
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
URL查看原文
Archive Date2014-08-12
Citation statistics
Document Type会议论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/9641
Collection双星与变星研究组
中国科学院天体结构与演化重点实验室
Affiliation1.Yunnan Observatories, Chinese Academy of Sciences (CAS), PO Box 110, 650011 Kunming, China
2.Key laboratory of the structure and evolution of celestial objects, Chinese Academy of Sciences, PO Box 110, 650011 Kunming, PR China
3.Department of Theoretical Physics and Astrophysics, Masaryk University, Kotlářská 2, 611 37 Brno, Czech Republic
Recommended Citation
GB/T 7714
Qian SB,Zhu LY,M. Zejda,et al. Close-in companions to contact binary stars[C]//K. Pavlovski, A. Tkachenko and G. Torres,2013:131-134.
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