The first photometric analysis of the W-subtype contact binary UCAC4 436-062932 with O'Connell effect

doi:10.1016/j.newast.2015.12.012

YNAO OpenIR > 双星与变星研究组

	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
DOI	10.1016/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
文章类型	Article
出版者	ELSEVIER SCIENCE BV
出版地	PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
ISSN	1384-1076
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：19[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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