Orbital Period Investigation of the RS CVn-Type Binary CG Cygni
Shi, Xiao-Min1,2; Xiang, Fu-Yuan1,2; Lu, Ye1,2; Shi, XM (reprint author), Xiangtan Univ, Dept Phys, Xiangtan 411105, Hunan, Peoples R China.
发表期刊PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN
2012-12-25
卷号64期号:6
DOI10.1093/pasj/64.6.121
收录类别SCI
关键词Stars: Binaries: Eclipsing Stars: Binaries: Orbital Period Stars: Individual (Cg Cygni)
摘要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.
项目资助者Chinese 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
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN0004-6264
URL查看原文
WOS记录号WOS:000313147700007
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]TERM STARSPOT ACTIVITY ; CANUM-VENATICORUM STARS ; LIGHT CURVES ; ANDROMEDAE
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文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/9427
专题中国科学院天体结构与演化重点实验室
通讯作者Shi, XM (reprint author), Xiangtan Univ, Dept Phys, Xiangtan 411105, Hunan, Peoples R China.
作者单位1.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
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Shi, Xiao-Min,Xiang, Fu-Yuan,Lu, Ye,et al. 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,&Shi, XM .(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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