Changes in the orbital period of the near-contact binary BF Vir
文献类型：期刊论文
| 作者 | Qian SB(钱声帮)1 ; Liu QY(刘清耀)1; Yang YL(杨毓兰)1; Yuan, LL2
|
| 刊名 | CHINESE ASTRONOMY AND ASTROPHYSICS
 |
| 出版日期 | 2000-07 |
| 卷号 | 24期号:3页码:331-338 |
| 关键词 | near-contact binary third body magnetic activity mass and angular momentum losses |
| ISSN号 | 0275-1062 |
| 产权排序 | 第一完成单位 |
| 通讯作者 | Qian, SB |
| 英文摘要 | 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. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 学科主题 | Astronomy & Astrophysics |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 收录类别 | SCI |
| 原文出处 | http://www.sciencedirect.com/science/article/pii/S0275106200000618 |
| 语种 | 英语 |
| WOS记录号 | WOS:000088821200010 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/5743]  |
| 专题 | 云南天文台_双星与变星研究组 |
| 作者单位 | 1.Yunnan Observatory, Chinese Academy of Sciences, Kunming 650011 ROC 2.Bijie Television University, Guizhou Province, Bijie 551700 ROC |
| 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.(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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来源：云南天文台
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