The first photometric analysis of the W-subtype contact binary UCAC4 436-062932 with O'Connell effect
文献类型：期刊论文
| 作者 | Zhou X(周肖)1,2,3 ; Qian SB(钱声帮)1,2,3; Essam, A.4; He JJ(何家佳)1,2; Zhang B(张斌)1,2,3
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| 刊名 | NEW ASTRONOMY
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| 出版日期 | 2016-08-01 |
| 卷号 | 47页码:3-6 |
| 关键词 | Stars: binaries: close Stars: binaries: eclipsing Stars: individual: UCAC4 436-062932 |
| ISSN号 | 1384-1076 |
| 产权排序 | 第一完成单位 |
| 通讯作者 | Zhou, X (reprint author), Chinese Acad Sci, Yunnan Observ, POB 110, Kunming 650216, Peoples R China. |
| 英文摘要 | Two sets of light curves in V, R-c and I-c bands for a newly discovered binary system UCAC4 436-062932 are obtained and analyzed using the Wilson-Devinney (W-D) code. The two sets of light curves get almost consistent results. The determined mass ratio is about q = 2.7 and the less massive component is nearly 250 K hotter than the more massive one. The solutions conclude that UCAC4 436-062932 is a W-subtype shallow contact (with a contact degree of f = 20%) binary system. Since the O'Connell effect appears on one set of the light curves, theories proposed to explain the effect are discussed. We assume that spot model may be the more plausible one to the O'Connell effect appeared on the asymmetric light curves of the binary system UCAC4 436-062932. Therefore, we add a cool spot on the surface of the more massive star (component with lower effective temperature) and get a quite approving results for the light curve fitting. It will provide evidence to support the spot model in the explanatory mechanism of O'Connell effect. (C) 2016 Elsevier B.V. All rights reserved. |
| 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] | LIGHT CURVES ; STARS ; EXPLANATION |
| 收录类别 | SCI |
| 原文出处 | http://www.sciencedirect.com/science/article/pii/S1384107615001645 |
| 语种 | 英语 |
| WOS记录号 | WOS:000374426800002 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/9588]  |
| 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, PO Box 110, Kunming 650216, China 2.Key Laboratory of the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, PO Box 110, Kunming 650216, China 3.Graduate University of the Chinese Academy of Sciences, Yuquan Road 19, Sijingshang Block, Beijing 100049, China 4.National Research Institute of Astronomy and Geophysics, Department of Astronomy, Helwan, Cairo, Egypt |
| 推荐引用方式 GB/T 7714 | Zhou X,Qian SB,Essam, A.,et al. The first photometric analysis of the W-subtype contact binary UCAC4 436-062932 with O'Connell effect[J]. NEW ASTRONOMY,2016,47:3-6. |
| APA | Zhou X,Qian SB,Essam, A.,He JJ,&Zhang B.(2016).The first photometric analysis of the W-subtype contact binary UCAC4 436-062932 with O'Connell effect.NEW ASTRONOMY,47,3-6. |
| MLA | Zhou X,et al."The first photometric analysis of the W-subtype contact binary UCAC4 436-062932 with O'Connell effect".NEW ASTRONOMY 47(2016):3-6. |
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来源：云南天文台
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