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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
Source PublicationRESEARCH IN ASTRONOMY AND ASTROPHYSICS
2014-09
Volume14Issue:9Pages:1157-1165
DOI10.1088/1674-4527/14/9/006
Contribution Rank第1完成单位
Indexed BySCI
KeywordBinaries: Close Binaries: Eclipsing Stars: Individual (V1799 Ori)
Abstract

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.

Funding ProjectNational Natural Science Foundation of China[11133007] ; National Natural Science Foundation of China[11325315]
Funding OrganizationNational Natural Science Foundation of China[11133007, 11325315]
Language英语
Subject Area天文学 ; 恒星与银河系 ; 恒星天文学 ; 恒星形成与演化
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherNational Natural Science Foundation of China
Publication Place20A DATUN RD, CHAOYANG, BEIJING, 100012, PEOPLES R CHINA
ISSN1674-4527
URL查看原文
Archive Date2014-08-27
WOS IDWOS:000342259100006
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordURSAE MAJORIS SYSTEMS ; STAR LIGHT ; CURVES ; EVOLUTION
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/5897
Collection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
Corresponding AuthorLiu NP(刘念平)
Affiliation1.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
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Corresponding Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
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 L.(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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