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The first photometric analysis of the W-subtype contact binary UCAC4 436-062932 with O'Connell effect
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
发表期刊NEW ASTRONOMY
2016-08-01
卷号47页码:3-6
DOI10.1016/j.newast.2015.12.012
产权排序第1完成单位
收录类别SCI
关键词Stars: Binaries: Close Stars: Binaries: Eclipsing Stars: Individual: Ucac4 436-062932
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.

资助项目Chinese Natural Science Foundation[11133007] ; Chinese Natural Science Foundation[11325315] ; Chinese Natural Science Foundation[11203066] ; Strategic Priority Research Program "The Emergence of Cosmological Structure" of the Chinese Academy of Sciences[XDB09010202] ; Natural Science Foundation of Yunnan Province[2012HC011] ; Science and Technological Development Fund [STDF], Ministry for Scientific Research, Egypt[1335]
项目资助者Chinese Natural Science Foundation[11133007, 11325315, 11203066] ; Strategic Priority Research Program "The Emergence of Cosmological Structure" of the Chinese Academy of Sciences[XDB09010202] ; Natural Science Foundation of Yunnan Province[2012HC011] ; Science and Technological Development Fund [STDF], Ministry for Scientific Research, Egypt[1335]
语种英语
学科领域天文学 ; 天体物理学 ; 实测天体物理学 ; 恒星与银河系 ; 恒星天文学
学科门类理学 ; 理学::天文学
文章类型Article
出版者ELSEVIER SCIENCE BV
出版地PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
ISSN1384-1076
URL查看原文
归档日期2016-04-20
WOS记录号WOS:000374426800002
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]LIGHT CURVES ; STARS ; EXPLANATION
引用统计
被引频次:16[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/114a53/9588
专题双星与变星研究组
中国科学院天体结构与演化重点实验室
通讯作者Zhou X(周肖)
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
第一作者单位中国科学院云南天文台
通讯作者单位中国科学院云南天文台
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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