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FIRST PHOTOMETRIC INVESTIGATION OF THE SOLAR-TYPE CONTACT BINARY GSC 1537-1557
Xiang, FY1; Xiao, TY1; Zhang B(张斌)2,3,4; Shi XD(施相东)2,3; Xiang, FY (reprint author), Xiangtan Univ, Dept Phys, Xiangtan 411105, Funan Province, Peoples R China.
发表期刊ASTRONOMICAL JOURNAL
2015-07
卷号150期号:1
DOI10.1088/0004-6256/150/1/9
产权排序第2完成单位
收录类别SCI
关键词Binaries: Close Binaries: Eclipsing Stars: Individual (Gsc 1537-1557)
摘要By analyzing R-c and I-c light curves of the short-period solar-type eclipsing binary GSC 1537-1557 we discovered that it is a shallow contact binary with a degree of contact factor of f = (8.10 +/- 1.79)%. Photometric solutions reveal that GSC 1537-1557 is a W-type system with a mass ratio of q = M-2/M-1 = 2.645 where the less massive component (the primary star) is about 110 K hotter than the more massive one (the secondary star). The asymmetry and variation of the light curves were explained as the activity of spots on the solar-type component stars. By investigating all of the available times of light minima, we found that the observed-calculated (O-C) curve shows a cyclic variation with a small amplitude of 0.00335 days and a period of 8.1 years. The small-amplitude cyclic change in the O - C curve was analyzed for the light-travel time effect via the presence of an extremely cool stellar companion. The mass of the third body was determined to be M-3 sin i' =(0.19 +/- 0.01) M-circle dot when M-1 + M-2 = 1.31 M-circle dot is adopted for GSC 1537-1557. The semimajor axis of the outer obit is a' sin i' =(4.58 +/- 0.33) AU.
项目资助者Chinese Natural Science Foundation [11273022, 11133007, 11325315] ; Program for Changjiang Scholars and Innovative Research Team in University [IRT13093]
语种英语
学科领域Pharmacology & Pharmacy ; Toxicology
文章类型Article
ISSN0004-6256
URL查看原文
WOS记录号WOS:000357744400009
WOS研究方向Pharmacology & Pharmacy ; Toxicology
WOS类目Pharmacology & Pharmacy ; Toxicology
关键词[WOS]URSAE MAJORIS SYSTEMS ; THERMAL RELAXATION OSCILLATION ; 4-COLOR LIGHT CURVES ; HIGH FILL-OUT ; PERIOD CHANGES ; MASS-RATIO ; ECLIPSING BINARY ; SHALLOW CONTACT ; STAR LIGHT ; LEONIS-MINORIS
引用统计
被引频次:2[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/114a53/5916
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Xiang, FY (reprint author), Xiangtan Univ, Dept Phys, Xiangtan 411105, Funan Province, Peoples R China.
作者单位1.Physics Department, Xiangtan University, 411105 Xiangtan, Funan Province, P. R. China
2.Yunnan Observatories, Chinese Academy of Sciences (CAS), P.O. Box 110, 650011 Kunming, P.R. China
3.Key Laboratory of the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, P.O. Box 110, 650011 Kunming, P. R. China
4.University of the Chinese Academy of Sciences, Yuquan Road 19#, Sijingshang Block, 100049 Beijing, P. R. China
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GB/T 7714
Xiang, FY,Xiao, TY,Zhang B,et al. FIRST PHOTOMETRIC INVESTIGATION OF THE SOLAR-TYPE CONTACT BINARY GSC 1537-1557[J]. ASTRONOMICAL JOURNAL,2015,150(1).
APA Xiang, FY,Xiao, TY,Zhang B,Shi XD,&Xiang, FY .(2015).FIRST PHOTOMETRIC INVESTIGATION OF THE SOLAR-TYPE CONTACT BINARY GSC 1537-1557.ASTRONOMICAL JOURNAL,150(1).
MLA Xiang, FY,et al."FIRST PHOTOMETRIC INVESTIGATION OF THE SOLAR-TYPE CONTACT BINARY GSC 1537-1557".ASTRONOMICAL JOURNAL 150.1(2015).
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