Changes in the orbital period of the near-contact binary BF Vir

doi:10.1016/S0275-1062(00)00061-8

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	Changes in the orbital period of the near-contact binary BF Vir
	Qian SB(钱声帮)1 ; Liu QY(刘清耀)1 ; Yang YL(杨毓兰)1 ; Yuan, LL 2; Qian, SB
发表期刊	CHINESE ASTRONOMY AND ASTROPHYSICS
	2000-07
卷号	24 期号:3 页码:331-338
DOI	10.1016/S0275-1062(00)00061-8
产权排序	第1完成单位
收录类别	SCI
关键词	Near-contact Binary Third Body Magnetic Activity Mass And Angular Momentum Losses
摘要	The published moments of light minima of the near-contact binary BF Vir have been compiled and the changes of its orbital period have been analyzed. The results show that the orbital period of this star contains a periodic change of 30 years while it undergoes a secular decrease. A study of the various physical mechanisms of orbital period changes shows that the existence of a third body with mass 0.2811 M. and orbital radius 10.2 AU may be used to interpret the periodic component of the orbital period variations. If this component is caused by the magnetic activity cycle of the secondary component star, then the total luminosity of the binary system should exhibit a cyclic variation with an amplitude of 0.097 L. and the same period as that of the orbital period changes. The secular decrease of the period may be due to the mass and angular momentum losses of the system. BF Vir is a short-period and near-contact binary system. It may evolve into an A-subtype contact binary via secular mass and angular momentum losses.
语种	英语
学科领域	Astronomy & Astrophysics
文章类型	Article
ISSN	0275-1062
URL	查看原文
WOS记录号	WOS:000088821200010
WOS研究方向	Astronomy & Astrophysics
WOS类目	Astronomy & Astrophysics
引用统计	被引频次：9[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/114a53/5743
专题	双星与变星研究组
通讯作者	Qian, SB
作者单位	1.Yunnan Observatory, Chinese Academy of Sciences, Kunming 650011 ROC 2.Bijie Television University, Guizhou Province, Bijie 551700 ROC
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	Qian SB,Liu QY,Yang YL,et al. Changes in the orbital period of the near-contact binary BF Vir[J]. CHINESE ASTRONOMY AND ASTROPHYSICS,2000,24(3):331-338.
APA	Qian SB,Liu QY,Yang YL,Yuan, LL,&Qian, SB.(2000).Changes in the orbital period of the near-contact binary BF Vir.CHINESE ASTRONOMY AND ASTROPHYSICS,24(3),331-338.
MLA	Qian SB,et al."Changes in the orbital period of the near-contact binary BF Vir".CHINESE ASTRONOMY AND ASTROPHYSICS 24.3(2000):331-338.

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