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First photometric analysis of magnetic activity and orbital period variations for the semi-detached binary BU Vulpeculae
Wang JJ(王晶晶)1,2,3; Zhang B(张斌)1,2,3; Yu, Jing1,2,3; Liu L(刘亮)1,2,3; Tian XM(田晓慢)1,2,3
发表期刊PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN
2018-08-01
卷号70期号:4页码:9
DOI10.1093/pasj/psy064
产权排序第3完成单位
收录类别SCI ; EI
关键词stars: activity stars: binaries: eclipsing stars: evolution stars: solar type
摘要

Four sets of multi-color CCD photometric observations of the close binary BU Vul were carried out for four successive months in 2010. From our observations, there are obvious variations and asymmetry of light curves on the timescale of a month, indicating high-level stellar spot activity on the surface of at least one component. The Wilson-Devinney (2010) program was used to determine the photometric solutions, which suggest that BU Vul is a semi-detached binary with the cool, less massive component filling with the critical Roche lobe. The solutions also reveal that the spots on the primary and the secondary have changed and drifted in 2010 July, August, and September. Based on analysis of the O - C curves of BU Vul, its orbital period shows a cyclic oscillation (T-3 = 22.4 yr, A(3) = 0.0029 d) superimposed on a secular increase. The continuous increase is possibly a result of mass transfer from the less massive component to the more massive one at a rate of dM/dt = -2.95 x 10(-9)M(circle dot) yr(-1). The cyclic variation maybe be caused by the presence of a tertiary companion with extremely low luminosity. Combined with the distortions of the light curve on 2009 November 4, we infer that BU Vul has two additional companions in a quadruple system.

资助项目Science Foundation of China University of Petroleum-Beijing At Karamay[RCYJ2016B-03-006] ; Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences[OP201708]
项目资助者Science Foundation of China University of Petroleum-Beijing At Karamay[RCYJ2016B-03-006] ; Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences[OP201708]
语种英语
学科领域天文学 ; 恒星与银河系 ; 恒星物理学 ; 恒星形成与演化
学科门类理学 ; 理学::天文学
文章类型Article
出版者OXFORD UNIV PRESS
出版地GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
ISSN0004-6264
URL查看原文
WOS记录号WOS:000456069400016
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]ANGULAR-MOMENTUM LOSS ; ALGOL-TYPE BINARIES ; ECLIPSING BINARY ; POSSIBLE MASS ; HIERARCHICAL TRIPLE ; CLOSE BINARIES ; STAR LIGHT ; DELPHINI ; CANCRI
EI入藏号20215211380443
EI主题词Photometry
EI分类号641.3 Mass Transfer - 657.2 Extraterrestrial Physics and Stellar Phenomena - 941.4 Optical Variables Measurements
引用统计
被引频次:5[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/18906
专题双星与变星研究组
中国科学院天体结构与演化重点实验室
通讯作者Wang JJ(王晶晶)
作者单位1.China University of Petroleum–Beijing at Karamay, Anding Road 355, 834000 Karamay, P.R. China
2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650011, P.R. China
3.Yunnan Observatories, Chinese Academy of Sciences, P.O. Box 110, 650216 Kunming, P.R. China
第一作者单位中国科学院云南天文台
通讯作者单位中国科学院云南天文台
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Wang JJ,Zhang B,Yu, Jing,et al. First photometric analysis of magnetic activity and orbital period variations for the semi-detached binary BU Vulpeculae[J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,2018,70(4):9.
APA Wang JJ,Zhang B,Yu, Jing,Liu L,&Tian XM.(2018).First photometric analysis of magnetic activity and orbital period variations for the semi-detached binary BU Vulpeculae.PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,70(4),9.
MLA Wang JJ,et al."First photometric analysis of magnetic activity and orbital period variations for the semi-detached binary BU Vulpeculae".PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN 70.4(2018):9.
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