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PHOTOMETRIC PROPERTIES FOR SELECTED ALGOL-TYPE BINARIES. VII. V404 AND WITH MAGNETIC ACTIVITY
Zhang, Li-Yun1,2,3; Yang, Yuan-Gui; Pi, Qing-Feng1,2,3; Zhu, Zhongzhong1,2,3
Source PublicationASTRONOMICAL JOURNAL
2014-03
Volume147Issue:3
DOI10.1088/0004-6256/147/3/66
Indexed BySCI
KeywordBinaries: Eclipsing Stars: Late-type Starspots
Abstract

We present new CCD light curves of the short-period Algol-type eclipsing binary V404 And obtained in 2009-2011. The time-resolving multiple BVRI color light curves of the year 2011 with full phase coverage were analyzed simultaneously using the latest Wilson-Devinney program. We concluded that the configuration of two starspots on the primary is the most reliable explanation for the light curve distortions observed in 2011. Based on the new photometric solution, we further applied the spot model to explain the other light curves, including the previously published R-band light curves. We revealed that the starspots changed on a long timescale in terms of the spot parameters and the differences between Max. I and Max. II. Moreover, the O - C diagram spanning about 15 yr shows an upward parabola, which indicates a secular increase in the orbital period of V404 And. The orbital period increases at a rate of dP/dt = 5.3(0.3) x 10(-7) days yr(-1), which might be interpreted by the angular momentum exchange via magnetic activity.

Funding ProjectNSFC[10978010] ; NSFC[11263001] ; NSFC[U1231102] ; Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences
Funding OrganizationNSFC[10978010, 11263001, U1231102] ; Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences
Language英语
Subject Area天文学 ; 恒星与银河系 ; 恒星天文学
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherIOP PUBLISHING LTD
Publication PlaceTEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
ISSN0004-6256
URL查看原文
WOS IDWOS:000331125600021
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordORBITAL PERIOD MODULATION ; ANGULAR-MOMENTUM LOSS ; EVOLUTIONARY STATUS ; CORONAE-BOREALIS ; CLOSE BINARIES ; RT ANDROMEDAE ; MASS-TRANSFER ; STAR LIGHT ; CATALOG ; HERCULIS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/9436
Collection中国科学院天体结构与演化重点实验室
Corresponding AuthorZhang, Li-Yun
Affiliation1.College of Science/Department of Physics and NAOC-GZU Center for Astronomy, Guizhou University, Guiyang 550025, P.R. China
2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650011, P.R. China
3.School of Physics and Electronic Information, Huaibei Normal University, Huaibei 235000 Anhui Province, P.R. China
Recommended Citation
GB/T 7714
Zhang, Li-Yun,Yang, Yuan-Gui,Pi, Qing-Feng,et al. PHOTOMETRIC PROPERTIES FOR SELECTED ALGOL-TYPE BINARIES. VII. V404 AND WITH MAGNETIC ACTIVITY[J]. ASTRONOMICAL JOURNAL,2014,147(3).
APA Zhang, Li-Yun,Yang, Yuan-Gui,Pi, Qing-Feng,&Zhu, Zhongzhong.(2014).PHOTOMETRIC PROPERTIES FOR SELECTED ALGOL-TYPE BINARIES. VII. V404 AND WITH MAGNETIC ACTIVITY.ASTRONOMICAL JOURNAL,147(3).
MLA Zhang, Li-Yun,et al."PHOTOMETRIC PROPERTIES FOR SELECTED ALGOL-TYPE BINARIES. VII. V404 AND WITH MAGNETIC ACTIVITY".ASTRONOMICAL JOURNAL 147.3(2014).
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