Orbital evolution of algol binaries with a circumbinary disk

doi:10.1086/506433

YNAO OpenIR > 双星与变星研究组

	Orbital evolution of algol binaries with a circumbinary disk
	Chen, WC 1; Li, XD 1; Qian SB(钱声帮)2 ; Chen, WC (reprint author), Nanjing Univ, Dept Astron, Nanjing 210093, Peoples R China.
发表期刊	ASTROPHYSICAL JOURNAL
	2006-10-01
卷号	649 期号:2 页码:973-978
DOI	10.1086/506433
产权排序	第2完成单位
收录类别	SCI
关键词	Binaries : Close Circumstellar Matter Stars : Evolution Stars : General Stars : Mass Loss
摘要	It is generally thought that conservative mass transfer in Algol binaries causes their orbits to be wider, so that the less massive star overflows its Roche lobe. The observed decrease in the orbital periods of some Algol binaries suggests orbital angular momentum loss during the binary evolution, and the magnetic braking mechanism is often invoked to explain the observed orbital shrinkage. Here we suggest an alternative explanation, in which a small fraction of the transferred mass forms a circumbinary disk, which extracts orbital angular momentum from the binary through tidal torques. We also perform numerical calculations of the evolution of Algol binaries with typical initial masses and orbital periods. The results indicate that, for reasonable input parameters, the circumbinary disk can significantly influence the orbital evolution, and cause the orbit to shrink on a sufficiently long timescale. Rapid mass transfer in Algol binaries with low mass ratios can also be accounted for in this scenario.
语种	英语
学科领域	Astronomy & Astrophysics
文章类型	Article
ISSN	0004-637X
URL	查看原文
WOS记录号	WOS:000240854200036
WOS研究方向	Astronomy & Astrophysics
WOS类目	Astronomy & Astrophysics
关键词[WOS]	ANGULAR-MOMENTUM LOSS ; LOW-MASS STARS ; X-RAY BINARIES ; CATACLYSMIC VARIABLES ; ABSOLUTE PARAMETERS ; SPECTROSCOPIC ORBIT ; STELLAR EVOLUTION ; MAGNETIC ACTIVITY ; SYSTEMS ; GEMINORUM
引用统计	被引频次：31[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/114a53/5786
专题	双星与变星研究组
通讯作者	Chen, WC (reprint author), Nanjing Univ, Dept Astron, Nanjing 210093, Peoples R China.
作者单位	1.Department of Astronomy, Nanjing University, Nanjing 210093, China 2.National Astronomical Observatories/Yunnan Astronomical Observatory, Chinese Academy of Sciences, P.O. Box 110, Kunming 650011, China
推荐引用方式 GB/T 7714	Chen, WC,Li, XD,Qian SB,et al. Orbital evolution of algol binaries with a circumbinary disk[J]. ASTROPHYSICAL JOURNAL,2006,649(2):973-978.
APA	Chen, WC,Li, XD,Qian SB,&Chen, WC .(2006).Orbital evolution of algol binaries with a circumbinary disk.ASTROPHYSICAL JOURNAL,649(2),973-978.
MLA	Chen, WC,et al."Orbital evolution of algol binaries with a circumbinary disk".ASTROPHYSICAL JOURNAL 649.2(2006):973-978.

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