The active W UMa type binary star V781 Tau revisited
Li, K.1,2; Gao, D. -Y.1; Hu, S. -M.1; Guo, D. -F.1; Jiang, Y. -G.1; Chen, X.1; Gao, DY (reprint author), Shandong Univ, Inst Space Sci, Shandong Prov Key Lab Opt Astron & Solar Terr Env, Weihai 264209, Peoples R China.
发表期刊ASTROPHYSICS AND SPACE SCIENCE
2016-02-01
卷号361期号:2
DOI10.1007/s10509-016-2649-8
收录类别SCI
关键词Stars: Binaries: Close Stars: Binaries: Eclipsing Stars: Individual (V781 Tau)
摘要In this paper, new determined BVRcIc light curves and radial velocities of V781 Tau are presented. By analyzing the light curves and radial velocities simultaneously, we found that V781 Tau is a W-subtype medium contact binary star with a mass ratio of q = 2.207 +/- 0.005 and a contact degree of f = 21.6(+/- 1.0) %. The difference between the two light maxima was explained by a dark spot on the less massive primary component. The change of the orbital period of V781 Tau was also investigated. A secular decrease at a rate of -6.01(+/- 2.28) x 10(-8) d/yr and a cyclic modulation with a period of 44.8 +/- 5.7 yr and an amplitude of 0.0064 +/- 0.0011 day were discovered. The continuous period decrease may be caused by angular momentum loss due to a magnetic stellar wind. The Applegate mechanism failed to explain the cyclic modulation. It is highly possible that the cyclic oscillation is the result of the light travel time effect by a third companion.
项目资助者National Natural Science Foundation of China(11203016, U1431105) ; Natural Science Foundation of Shandong Province(ZR2014AQ019) ; Open Research Program of Key Laboratory for the Structure and Evolution of Celestial Objects(OP201303)
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN0004-640X
URL查看原文
WOS记录号WOS:000370805300017
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]ECLIPSING BINARIES ; LIGHT CURVES ; PERIOD ; SYSTEM ; EVOLUTION
引用统计
文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/9342
专题中国科学院天体结构与演化重点实验室
通讯作者Gao, DY (reprint author), Shandong Univ, Inst Space Sci, Shandong Prov Key Lab Opt Astron & Solar Terr Env, Weihai 264209, Peoples R China.
作者单位1.Shandong Provincial Key Laboratory of Optical Astronomy and Solar-Terrestrial Environment, Institute of Space Sciences, Shandong University, Weihai, 264209, China
2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming, Yunnan, China
推荐引用方式
GB/T 7714
Li, K.,Gao, D. -Y.,Hu, S. -M.,et al. The active W UMa type binary star V781 Tau revisited[J]. ASTROPHYSICS AND SPACE SCIENCE,2016,361(2).
APA Li, K..,Gao, D. -Y..,Hu, S. -M..,Guo, D. -F..,Jiang, Y. -G..,...&Gao, DY .(2016).The active W UMa type binary star V781 Tau revisited.ASTROPHYSICS AND SPACE SCIENCE,361(2).
MLA Li, K.,et al."The active W UMa type binary star V781 Tau revisited".ASTROPHYSICS AND SPACE SCIENCE 361.2(2016).
条目包含的文件
文件名称/大小 文献类型 版本类型 开放类型 使用许可
The active W UMa typ(1117KB)期刊论文作者接受稿开放获取CC BY-NC-SA浏览 请求全文
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Li, K.]的文章
[Gao, D. -Y.]的文章
[Hu, S. -M.]的文章
百度学术
百度学术中相似的文章
[Li, K.]的文章
[Gao, D. -Y.]的文章
[Hu, S. -M.]的文章
必应学术
必应学术中相似的文章
[Li, K.]的文章
[Gao, D. -Y.]的文章
[Hu, S. -M.]的文章
相关权益政策
暂无数据
收藏/分享
文件名: The active W UMa type binary star V781 Tau revisited.pdf
格式: Adobe PDF
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。