A model for contact binary systems

doi:10.1088/1009-9271/7/4/10

YNAO OpenIR > 恒星物理研究组

	A model for contact binary systems
	Song HF(宋汉峰)1,2 ; Huang RQ(黄润乾)1 ; Bi SL(毕少兰)1 ; Song, HF (reprint author), Chinese Acad Sci, Yunnan Observ, Natl Astron Observ, Kunming 650011, Peoples R China.
发表期刊	CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS
	2007
卷号	7 期号:4 页码:539-550
DOI	10.1088/1009-9271/7/4/10
产权排序	第1完成单位
收录类别	SCI
关键词	Stars : Binaries Stars : Evolution
摘要	A model for contact binary systems is presented, which incorporates the following special features: a) The energy exchange between the components is based on the understanding that the energy exchange is due to the release of potential, kinetic and thermal energies of the exchanged mass. b) A special form of mass and angular momentum loss occurring in contact binaries is losses via the outer Lagrangian point. c) The effects of spin, orbital rotation and tidal action on the stellar structure as well as the effect of meridian circulation on the mixing of the chemical elements are considered. d) The model is valid not only for low-mass contact binaries but also for high-mass contact binaries. For illustration, we used the model to trace the evolution of a massive binary system consisting of one 12M(circle dot) and one 5M(circle dot) star. The result shows that the start and end of the contact stage fall within the semi-detached phase during which the primary continually transfers mass to the secondary. The time span of the contact stage is short and the mass transfer rate is very large. Therefore, the contact stage can be regarded as a special part of the semi-detached phase with a large mass transfer rate. Both mass loss through the outer Lagrangian point and oscillation between contact and semi-contact states can occur during the contact phase, and the effective temperatures of the primary and the secondary are almost equal.
语种	英语
学科领域	Astronomy & Astrophysics
文章类型	Article
ISSN	1009-9271
URL	查看原文
WOS记录号	WOS:000249365900010
WOS研究方向	Astronomy & Astrophysics
WOS类目	Astronomy & Astrophysics
关键词[WOS]	EVOLUTION ; STARS
引用统计	被引频次：5[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ynao.ac.cn/handle/114a53/5190
专题	恒星物理研究组
通讯作者	Song, HF (reprint author), Chinese Acad Sci, Yunnan Observ, Natl Astron Observ, Kunming 650011, Peoples R China.
作者单位	1.National Astronomical Observatories / Yunnan Observatory, Chinese Academy of Sciences, Kunming 650011 2.Graduate School of Chinese Academy of Sciences, Beijing 100049
第一作者单位	中国科学院云南天文台
推荐引用方式 GB/T 7714	Song HF,Huang RQ,Bi SL,et al. A model for contact binary systems[J]. CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS,2007,7(4):539-550.
APA	Song HF,Huang RQ,Bi SL,&Song, HF .(2007).A model for contact binary systems.CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS,7(4),539-550.
MLA	Song HF,et al."A model for contact binary systems".CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS 7.4(2007):539-550.

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A Model for Contact （259KB）	期刊论文	作者接受稿	开放获取	CC BY-NC-SA	浏览请求全文