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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.
Source PublicationNEW ASTRONOMY
2006-04
Volume11Issue:6Pages:415-419
DOI10.1016/j.newast.2005.10.006
Contribution Rank第1完成单位
Indexed BySCI ; EI
KeywordStars : Binaries : Close Binaries : Eclipsing Stars : Individuals Bo Vul Stars : Activity
AbstractA 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.
Language英语
Subject AreaAstronomy & Astrophysics
SubtypeArticle
ISSN1384-1076
URL查看原文
Archive Date2006-03-06
WOS IDWOS:000236602200003
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordORBITAL PERIOD ; BINARY-SYSTEMS
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Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/5790
Collection双星与变星研究组
Corresponding AuthorLi, LF (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Observ, POB 110, Kunming 650011, Yunnan, Peoples R China.
Affiliation1.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
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
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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