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Rapid Light-curve Changes and Probable Flip-flop Activity of the W UMa-type Binary V410 Aur

文献类型：期刊论文

作者Wang, Kun1; Luo, Yangping1; Luo, Changqing3; Deng, Licai3; Zhang, Xiaobin3; Luo, Xia2; Luo,Changqing; Deng,Licai; Zhang,Xiaobin
刊名ASTRONOMICAL JOURNAL
出版日期2017-09-01
卷号154期号:3
关键词Binaries: Eclipsing Stars: Individual (V410 Aur) Stars: Late-type Stars: Starspots
DOI10.3847/1538-3881/aa8325
文献子类Article
英文摘要New photometric observations of a W UMa system, V410 Aur, were carried out over 10 nights from 2014 December 19 to 2015 February 8, from which four sets of light curves were obtained. The light curves show many unusual behavioral features, including changing occultation depths, transit minima, and asymmetric maxima. The four sets of light curves have been separately analyzed with the Wilson-Devinney method. The results suggest a totally eclipsing contact configuration for the system. Over a surprisingly short time span of only 52 days, the dominant spot distortion phase jumped twice between phases 0.0 and 0.5. The light-curve variations can be interpreted by the presence of two cool spots on the massive component. Based on our analysis, it is further suggested that the peculiar behavioral patterns are probably caused by the presence of two permanent, active large spots separated in longitude by about 180 degrees, whose locations remain almost unchanged throughout. Our study demonstrates that the system has been undergoing typical flip-flop activity. We therefore conclude that V410 Aur is a W UMa-type system exhibiting flip-flop activity.
WOS关键词CONTACT BINARIES ; ACTIVITY CYCLES ; URSAE MAJORIS ; ANGULAR-MOMENTUM ; STAR LIGHT ; MASS ; SYSTEMS ; COMPONENTS ; LONGITUDES ; EVOLUTION
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:000407778700003
资助机构National Natural Science Foundation of China(11633005 ; National Natural Science Foundation of China(11633005 ; 11473037 ; 11473037 ; 11373037 ; 11373037 ; 11303021) ; 11303021) ; National Natural Science Foundation of China(11633005 ; National Natural Science Foundation of China(11633005 ; 11473037 ; 11473037 ; 11373037 ; 11373037 ; 11303021) ; 11303021)
源URL[http://ir.bao.ac.cn/handle/114a11/20141]  
专题国家天文台_光学天文研究部
作者单位1.China West Normal Univ, Dept Astron, Nanchong 637002, Peoples R China
2.Beijing Normal Univ, Dept Astron, Beijing 100875, Peoples R China
3.Chinese Acad Sci, Natl Astron Observ, Key Lab Opt Astron, Beijing 100012, Peoples R China
推荐引用方式
GB/T 7714		 Wang, Kun,Luo, Yangping,Luo, Changqing,et al. Rapid Light-curve Changes and Probable Flip-flop Activity of the W UMa-type Binary V410 Aur[J]. ASTRONOMICAL JOURNAL,2017,154(3).
APA Wang, Kun.,Luo, Yangping.,Luo, Changqing.,Deng, Licai.,Zhang, Xiaobin.,...&Zhang,Xiaobin.(2017).Rapid Light-curve Changes and Probable Flip-flop Activity of the W UMa-type Binary V410 Aur.ASTRONOMICAL JOURNAL,154(3).
MLA Wang, Kun,et al."Rapid Light-curve Changes and Probable Flip-flop Activity of the W UMa-type Binary V410 Aur".ASTRONOMICAL JOURNAL 154.3(2017).

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来源：国家天文台

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