PHOTOMETRIC PROPERTIES FOR SELECTED ALGOL-TYPE BINARIES. VII. V404 AND WITH MAGNETIC ACTIVITY
文献类型：期刊论文
| 作者 | Zhang, Li-Yun1,2,3 ; Yang, Yuan-Gui; Pi, Qing-Feng1,2,3; Zhu, Zhongzhong1,2,3
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| 刊名 | ASTRONOMICAL JOURNAL
 |
| 出版日期 | 2014-03 |
| 卷号 | 147期号:3 |
| 关键词 | binaries: eclipsing stars: late-type starspots |
| ISSN号 | 0004-6256 |
| 通讯作者 | Zhang, LY (reprint author), Guizhou Univ, Coll Sci, Dept Phys, Guiyang 550025, Peoples R China. |
| 英文摘要 | 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. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 学科主题 | Astronomy & Astrophysics |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | 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 |
| 收录类别 | SCI |
| 原文出处 | http://iopscience.iop.org/article/10.1088/0004-6256/147/3/66/meta |
| 语种 | 英语 |
| WOS记录号 | WOS:000331125600021 |
| 公开日期 | 2016-06-01 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/9436]  |
| 专题 | 云南天文台_中国科学院天体结构与演化重点实验室 |
| 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 |
| 推荐引用方式 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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来源：云南天文台
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