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Orbital Period Investigation of the RS CVn-Type Binary CG Cygni
Shi, Xiao-Min1,2; Xiang, Fu-Yuan1,2; Lu, Ye1,2
Source PublicationPUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN
2012-12-25
Volume64Issue:6
DOI10.1093/pasj/64.6.121
Indexed BySCI
KeywordStars: Binaries: Eclipsing Stars: Binaries: Orbital Period Stars: Individual (Cg Cygni)
Abstract

We collected all minima times of the RS CVn-type binary CG Cyg that we were able to find in the literature and databases. The orbital period variations of the system were examined by analyzing its O - C curves (1) through the weighted least-squares method, and (2) through the first continuous method. It was found that the results obtained from the two methods are different. We compared our results with the former author's work, and drew the orbital-period variation of CO Cyg, which indicates that it undergoes a long-term period increase at a rate of dP/dt = +2.48 x 10(-8) d yr(-1). We discuss the implications of the result regarding the link between the orbital-period variation and the mass transfer of the system.

Funding ProjectChinese Natural Science Foundations[11273022] ; Chinese Natural Science Foundations[10878012] ; Chinese Natural Science Foundations[11173019] ; Chinese Natural Science Foundations[11133007] ; Chinese Natural Science Foundations[10903007] ; Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences ; John Templeton Foundation ; National Astronomical Observatories of Chinese Academy of Sciences
Funding OrganizationChinese Natural Science Foundations[11273022, 10878012, 11173019, 11133007, 10903007] ; Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences ; John Templeton Foundation ; National Astronomical Observatories of Chinese Academy of Sciences
Language英语
Subject Area天文学 ; 恒星与银河系
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherOXFORD UNIV PRESS
Publication PlaceGREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
ISSN0004-6264
URL查看原文
WOS IDWOS:000313147700007
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordTERM STARSPOT ACTIVITY ; CANUM-VENATICORUM STARS ; LIGHT CURVES ; ANDROMEDAE
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/9427
Collection中国科学院天体结构与演化重点实验室
Corresponding AuthorShi, Xiao-Min
Affiliation1.Department of Physics, Xiangtan University, Xiangtan 411105, Hunan Province, China
2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650011, Yunnan Province, China
Recommended Citation
GB/T 7714
Shi, Xiao-Min,Xiang, Fu-Yuan,Lu, Ye. Orbital Period Investigation of the RS CVn-Type Binary CG Cygni[J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,2012,64(6).
APA Shi, Xiao-Min,Xiang, Fu-Yuan,&Lu, Ye.(2012).Orbital Period Investigation of the RS CVn-Type Binary CG Cygni.PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,64(6).
MLA Shi, Xiao-Min,et al."Orbital Period Investigation of the RS CVn-Type Binary CG Cygni".PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN 64.6(2012).
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