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 | |
发表期刊 | ASTRONOMICAL JOURNAL |
2015-07 | |
卷号 | 150期号:1 |
DOI | 10.1088/0004-6256/150/1/9 |
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. |
资助项目 | Chinese Natural Science Foundation[11273022] ; Chinese Natural Science Foundation[11133007] ; Chinese Natural Science Foundation[11325315] ; Program for Changjiang Scholars and Innovative Research Team in University[IRT13093] |
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 | 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 | IOP PUBLISHING LTD |
出版地 | TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND |
ISSN | 0004-6256 |
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 | |
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 |
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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