BO Vulpeculae: Is the primary surrounded by an accretion disk?
文献类型：期刊论文
| 作者 | Li LF(李立芳)1 ; Jiang DK(姜登凯)1,2; Zhang FH(张奉辉)1
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| 刊名 | NEW ASTRONOMY
 |
| 出版日期 | 2006-04 |
| 卷号 | 11期号:6页码:415-419 |
| ISSN号 | 1384-1076 |
| 关键词 | stars : binaries : close binaries : eclipsing stars : individuals BO Vul stars : activity |
| 通讯作者 | Li, LF (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Observ, POB 110, Kunming 650011, Yunnan, Peoples R China. |
| 产权排序 | 第一完成单位 |
| 英文摘要 | A detailed study of the orbital period of in Algol-type eclipsing binary BO Vulpeculae is presented. Based oil the analysis of the (O-C) curve, we find that, apart from a secular decrease, several sudden jumps have occurred in the orbital period of the system BO Vul. We investigate the physical mechanisms which might underlie the variation in the orbital period of the system BO Vulpeculae, and find that the mass is transferred from the primary to the secondary with it rate of dM(1)/D-1 -2.84 x 10(-9) M-circle dot yr(-1) if the period decrease is only caused by the loss of mass and angular momentum owing to an enhanced stellar wind. It is impossible for 130 Vulpeculae that the mass is transferred from the primary to the secondary because the radius of the primary is much smaller than that of its Roche lobe. This implies that an accretion disk is probably Formed around the primary of BO Vulpeculae, in which the angular momentum in the transferred matter is stored. Therefore, we concluded that the secular decrease in the orbital period of BO Vulpeculae might be caused by the loss of mass and angular momentum from the system via a magnetic stellar wind (MSW) and/or by all accretion disk formed around the primary of 130 Vulpeculae. The sudden jumps in the orbital period of BO Vul might be caused by the instability of the accretion disk or by the structure changes in the convective envelope of the secondary. (c) 2005 Elsevier B.V. All rights reserved. |
| 学科主题 | Astronomy & Astrophysics |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | ORBITAL PERIOD ; BINARY-SYSTEMS |
| 收录类别 | SCI ; EI |
| 原文出处 | http://www.sciencedirect.com/science/article/pii/S1384107605001466 |
| 语种 | 英语 |
| WOS记录号 | WOS:000236602200003 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/5790]  |
| 专题 | 云南天文台_双星与变星研究组 |
| 作者单位 | 1.National Astronomical Observatories/Yunnan Observatory, Chinese Academy of Sciences, Stellar evolution, P.O. Box 110, Kunming, Yunnan Province 650011, PR China 2.Graduate University of Chinese Academy of Science, Beijing 100039 |
| 推荐引用方式 GB/T 7714 | Li LF,Jiang DK,Zhang FH. BO Vulpeculae: Is the primary surrounded by an accretion disk?[J]. NEW ASTRONOMY,2006,11(6):415-419. |
| APA | Li LF,Jiang DK,&Zhang FH.(2006).BO Vulpeculae: Is the primary surrounded by an accretion disk?.NEW ASTRONOMY,11(6),415-419. |
| MLA | Li LF,et al."BO Vulpeculae: Is the primary surrounded by an accretion disk?".NEW ASTRONOMY 11.6(2006):415-419. |
入库方式： OAI收割
来源：云南天文台
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