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FIRST PHOTOMETRIC INVESTIGATION OF THE SOLAR-TYPE CONTACT BINARY GSC 1537-1557

文献类型：期刊论文

作者Xiang, FY1; Xiao, TY1; Zhang B(张斌)2,3,4; Shi XD(施相东)2,3
刊名ASTRONOMICAL JOURNAL
出版日期2015-07
卷号150期号:1
关键词binaries: close binaries: eclipsing stars: individual (GSC 1537-1557)
ISSN号0004-6256
产权排序第二完成单位
通讯作者Xiang, FY (reprint author), Xiangtan Univ, Dept Phys, Xiangtan 411105, Funan Province, Peoples R China.
英文摘要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.
WOS标题词Science & Technology ; Physical Sciences
学科主题Pharmacology & Pharmacy ; Toxicology
类目[WOS]Pharmacology & Pharmacy ; Toxicology
研究领域[WOS]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
收录类别SCI
原文出处http://iopscience.iop.org/article/10.1088/0004-6256/150/1/9/meta
语种英语
WOS记录号WOS:000357744400009
源URL[http://ir.ynao.ac.cn/handle/114a53/5916]  
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.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
推荐引用方式
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.(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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来源：云南天文台

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