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Rapid Light-curve Changes and Probable Flip-flop Activity of the W UMa-type Binary V410 Aur
Luo, Xia1; Wang, Kun2; Zhang, Xiaobin3; Deng, Licai3; Luo, Yangping2; Luo, Changqing3
2017-09-01
Source PublicationASTRONOMICAL JOURNAL
Volume154Issue:3
AbstractNew 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.
SubtypeArticle
KeywordBinaries: Eclipsing Stars: Individual (V410 Aur) Stars: Late-type Stars: Starspots
WOS HeadingsScience & Technology ; Physical Sciences
Funding OrganizationNational 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)
DOI10.3847/1538-3881/aa8325
WOS KeywordCONTACT BINARIES ; ACTIVITY CYCLES ; URSAE MAJORIS ; ANGULAR-MOMENTUM ; STAR LIGHT ; MASS ; SYSTEMS ; COMPONENTS ; LONGITUDES ; EVOLUTION
Indexed BySCI
Language英语
Funding OrganizationNational 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)
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000407778700003
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/20141
Collection光学天文研究部
Affiliation1.Beijing Normal Univ, Dept Astron, Beijing 100875, Peoples R China
2.China West Normal Univ, Dept Astron, Nanchong 637002, Peoples R China
3.Chinese Acad Sci, Natl Astron Observ, Key Lab Opt Astron, Beijing 100012, Peoples R China
Recommended Citation
GB/T 7714
Luo, Xia,Wang, Kun,Zhang, Xiaobin,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 Luo, Xia,Wang, Kun,Zhang, Xiaobin,Deng, Licai,Luo, Yangping,&Luo, Changqing.(2017).Rapid Light-curve Changes and Probable Flip-flop Activity of the W UMa-type Binary V410 Aur.ASTRONOMICAL JOURNAL,154(3).
MLA Luo, Xia,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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