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BO Vulpeculae: Is the primary surrounded by an accretion disk?
Li LF(李立芳)1; Jiang DK(姜登凯)1,2; Zhang FH(张奉辉)1; Li, LF (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Observ, POB 110, Kunming 650011, Yunnan, Peoples R China.
发表期刊NEW ASTRONOMY
2006-04
卷号11期号:6页码:415-419
DOI10.1016/j.newast.2005.10.006
产权排序第1完成单位
收录类别SCI ; EI
关键词Stars : Binaries : Close Binaries : Eclipsing Stars : Individuals Bo Vul Stars : Activity
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.
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN1384-1076
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归档日期2006-03-06
WOS记录号WOS:000236602200003
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]ORBITAL PERIOD ; BINARY-SYSTEMS
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文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/5790
专题双星与变星研究组
通讯作者Li, LF (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Observ, POB 110, Kunming 650011, Yunnan, Peoples R China.
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
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Li LF,Jiang DK,Zhang FH,et al. 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,&Li, LF .(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.
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