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Photometric investigation of the K-type extremely shallow contact binary V1799 Orion
Liu NP(刘念平)1,2,3; Qian SB(钱声帮)1,2,3; Liao WP(廖文萍)1,2; He JJ(何家佳)1,2; Zhao EG(赵二刚)1,2; Liu L(刘亮)1,2; Liu, NP (reprint author), Chinese Acad Sci, Yunnan Observ, Kunming 650011, Peoples R China.
发表期刊RESEARCH IN ASTRONOMY AND ASTROPHYSICS
2014-09
卷号14期号:9页码:1157-1165
DOI10.1088/1674-4527/14/9/006
产权排序第1完成单位
收录类别SCI
关键词Binaries: Close Binaries: Eclipsing Stars: Individual (V1799 Ori)
摘要New multi-color light curves of the very short period K-type eclipsing binary V1799 On were obtained and analyzed with the Wilson-Devinney code. The photometric solutions reveal that the system is a W-type shallow-contact binary with a mass ratio of q = 1.335(+/- 0.005) and a degree of contact of about f = 3.5(+/- 1.1)%. In general, the results are in good agreement with what is reported by Samec. Dramatic manifestations of the O'Connell effect that appear in the light curves can be explained well by employing starspots on the binary surface, which confirms that the system is active at present. Several new times of light minimum were obtained. All the available times of light minimum were collected, along with the recalculated and newly obtained values. Applying a least-squares method to the constructed O - C diagram, a new ephemeris is derived for V1799 Ori. The orbital period is found to show a continuous weak increase at a rate of 1.8(+/- 0.6) x 10(-8) d yr(-1). The extremely shallow contact, together with the period increase, suggests that the binary may be at a critical stage predicted by thermal relaxation oscillation theory.
项目资助者National Natural Science Foundation of China [11133007, 11325315]
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN1674-4527
URL查看原文
归档日期2014-08-27
WOS记录号WOS:000342259100006
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]URSAE MAJORIS SYSTEMS ; STAR LIGHT ; CURVES ; EVOLUTION
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/114a53/5897
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Liu, NP (reprint author), Chinese Acad Sci, Yunnan Observ, Kunming 650011, Peoples R China.
作者单位1.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, China
2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650011, China
3.University of Chinese Academy of Sciences, Beijing 100049, China
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GB/T 7714
Liu NP,Qian SB,Liao WP,et al. Photometric investigation of the K-type extremely shallow contact binary V1799 Orion[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2014,14(9):1157-1165.
APA Liu NP.,Qian SB.,Liao WP.,He JJ.,Zhao EG.,...&Liu, NP .(2014).Photometric investigation of the K-type extremely shallow contact binary V1799 Orion.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,14(9),1157-1165.
MLA Liu NP,et al."Photometric investigation of the K-type extremely shallow contact binary V1799 Orion".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 14.9(2014):1157-1165.
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