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Orbital evolution of algol binaries with a circumbinary disk
Chen, WC1; Li, XD1; 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
DOI10.1086/506433
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
ISSN0004-637X
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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
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被引频次:26[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
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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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