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; Zhang, LY (reprint author), Guizhou Univ, Coll Sci, Dept Phys, Guiyang 550025, Peoples R China.
发表期刊ASTRONOMICAL JOURNAL
2014-03
卷号147期号:3
DOI10.1088/0004-6256/147/3/66
收录类别SCI
关键词Binaries: Eclipsing Stars: Late-type Starspots
摘要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.
项目资助者NSFC(10978010,11263001,U1231102) ; Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN0004-6256
URL查看原文
WOS记录号WOS:000331125600021
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]ORBITAL PERIOD MODULATION ; ANGULAR-MOMENTUM LOSS ; EVOLUTIONARY STATUS ; CORONAE-BOREALIS ; CLOSE BINARIES ; RT ANDROMEDAE ; MASS-TRANSFER ; STAR LIGHT ; CATALOG ; HERCULIS
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被引频次:4[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/114a53/9436
专题中国科学院天体结构与演化重点实验室
通讯作者Zhang, LY (reprint author), Guizhou Univ, Coll Sci, Dept Phys, Guiyang 550025, Peoples R China.
作者单位1.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
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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,&Zhang, LY .(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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