1SWASP J200503.05-343726.5: A high mass ratio eclipsing binary near the period limit
文献类型：期刊论文
| 作者 | Zhang B(张斌)1,2,3 ; Qian SB(钱声帮)1,2,3; Zejda, Miloslav4; Zhu LY(朱俐颖)1,2,3; Liu NP(刘念平)1,2
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| 刊名 | NEW ASTRONOMY
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| 出版日期 | 2017-07-01 |
| 卷号 | 54页码:52-55 |
| ISSN号 | 1384-1076 |
| 关键词 | Binary Eclipsing binary Short-period limit Light curves |
| 通讯作者 | Zhang Bin(Chinese Acad Sci, Yunnan Observatories, POB 110, Kunming 650216, Peoples R China) |
| 产权排序 | 第1完成单位 |
| 英文摘要 | First CCD photometric light curves of the eclipsing binary system 1SWASP J200503.05-343726.5 are presented. Our complete light curves in V, R and I bands using the Bessell filter show an out-of-eclipsing distortion, which means that the components of the system may be active. The preliminary photometric solutions with a cool star-spot are derived by using the 2013 version of the Wilson-Devinney (W-D) code. The photometric solutions suggest that 1SWASP J200503.05-343726.5 is a shallow-contact eclipsing binary(f = 9.0%) with a mass ratio of q= 1.0705, which is very high for late-type binary systems near the period limit. The primary component is about 230 K hotter than the secondary component. Based on our new CCD eclipse times, the orbital period change was analyzed. According to 0 C diagram, the orbital period of the 1SWASP 1200503.05-343726.5 shows an increase at a rate of <(P)over dot> = +5.43 x 10(-8) days year(-1). The period increase may be caused by mass transfer from the less massive component to the more massive one. This shallow-contact system may be formed from a detached short-period binary via orbital shrinkage because of dynamical interactions with a third component or by magnetic braking. (C) 2017 Elsevier B.V. All rights reserved. |
| 学科主题 | 天文学 |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | STAR LIGHT CURVES ; CONTACT BINARY ; RADIAL-VELOCITY ; CLOSE BINARIES ; SYSTEM |
| 收录类别 | SCI |
| 原文出处 | http://linkinghub.elsevier.com/retrieve/pii/S1384107616301105 |
| 语种 | 英语 |
| WOS记录号 | WOS:000397369300007 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/10015]  |
| 专题 | 云南天文台_双星与变星研究组 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.Yunnan Observatories, Chinese Academy of Sciences, P.O. Box 110, Kunming 650216, PR China 2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650216, PR China 3.Graduate University of Chinese Academy of Sciences, Beijing, PR China 4.Department of Theoretical Physics and Astrophysics, Masaryk University, Kotlár̆ská 2, Brno 611 37, Czech Republic |
| 推荐引用方式 GB/T 7714 | Zhang B,Qian SB,Zejda, Miloslav,et al. 1SWASP J200503.05-343726.5: A high mass ratio eclipsing binary near the period limit[J]. NEW ASTRONOMY,2017,54:52-55. |
| APA | Zhang B,Qian SB,Zejda, Miloslav,Zhu LY,&Liu NP.(2017).1SWASP J200503.05-343726.5: A high mass ratio eclipsing binary near the period limit.NEW ASTRONOMY,54,52-55. |
| MLA | Zhang B,et al."1SWASP J200503.05-343726.5: A high mass ratio eclipsing binary near the period limit".NEW ASTRONOMY 54(2017):52-55. |
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来源：云南天文台
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