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NSVS 01286630: a detached binary with a close-in companion
Zhang B(张斌)1,2,3; Qian SB(钱声帮)1,2,3; Liao WP(廖文萍)1,2,3; Zhu LY(朱俐颖)1,2,3; Dong, Ai-Jun4; Zhi, Qi-Jun4
通讯作者Zhang, Bin(zhangbin@ynao.ac.cn)
发表期刊RESEARCH IN ASTRONOMY AND ASTROPHYSICS
2018-08-01
卷号18期号:9页码:10
DOI10.1088/1674-4527/18/9/116
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 (NSVS 01286630)
摘要New photometric observations of NSVS 01286630 were performed and two sets of fourcolor (B, V, R-c, I-c) light curves (LCs) were obtained. Using the 2013 version of the Wilson-Devinney (W-D) code, we analyzed these data. The photometric solutions reveal that NSVS 01286630 is an active detached eclipsing binary (EB) with a high orbital inclination (nearly 90 degrees). Remarkably, the temperature of the primary component (the hotter star) is higher than the secondary one, but the value of mass ratio q(M-2/M-1) for NSVS 0128663 is more than 1, which can be explained in that the surface of the secondary component of NSVS 01286630 is covered with big cool starspots. Based on our new CCD mid-eclipse times and the data published until now, variations in the mid-eclipse times were reanalyzed in detail using a weighted least-squares method. It is discovered that the (O - C) diagram of the system shows a cyclic oscillation with a period of 3.61 yr and an amplitude of 0.001 d. The cyclic variation may be caused by the light-travel time effect (LTTE) due to the presence of a third companion, whose mass we calculated as M-3 sin(i(3)) = 0. 11M(circle dot). The third body may affect the orbital evolution of the central binary system by transferring angular momentum.
资助项目National Natural Science Foundation of China[11573063] ; National Natural Science Foundation of China[11611530685] ; Key Science Foundation of Yunnan Province[2017FA001] ; Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences
项目资助者National Natural Science Foundation of China ; Key Science Foundation of Yunnan Province ; Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences
语种英语
学科领域天文学
学科门类理学 ; 理学::天文学
文章类型Article
出版者NATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES
ISSN1674-4527
URL查看原文
WOS记录号WOS:000445688500012
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]LOW-MASS STARS ; ORBITAL PERIOD MODULATION ; SKY-VARIABILITY-SURVEY ; ECLIPSING BINARY ; MAGNETIC ACTIVITY ; LIGHT CURVES ; RT LACERTAE ; EVOLUTION ; SYSTEMS ; CYCLES
引用统计
文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/17911
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Zhang B(张斌)
作者单位1.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, China
2.Key Laboratory of the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650216, China
3.University of Chinese Academy of Sciences, Beijing 100049, China
4.School of Physics and Electronic Science, Guizhou Normal University, Guiyang 550001, China
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GB/T 7714
Zhang B,Qian SB,Liao WP,et al. NSVS 01286630: a detached binary with a close-in companion[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2018,18(9):10.
APA Zhang B,Qian SB,Liao WP,Zhu LY,Dong, Ai-Jun,&Zhi, Qi-Jun.(2018).NSVS 01286630: a detached binary with a close-in companion.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,18(9),10.
MLA Zhang B,et al."NSVS 01286630: a detached binary with a close-in companion".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 18.9(2018):10.
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