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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, LL2; Qian, SB
发表期刊CHINESE ASTRONOMY AND ASTROPHYSICS
2000-07
卷号24期号:3页码:331-338
DOI10.1016/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
ISSN0275-1062
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WOS记录号WOS:000088821200010
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
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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
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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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