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A period study of the near-contact binary IR Cassiopeiae
Zhu LY(朱俐颖)1,2,4; Qian SB(钱声帮)1,2; Xiang, FY3; Zhu, LY (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Observ, POB 110, Kunming 650011, Peoples R China.
Source PublicationPUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN
2004
Volume56Issue:5Pages:809-811
DOI10.1093/pasj/56.5.809
Contribution Rank第1完成单位
Indexed BySCI
KeywordStars : Binaries : Close Stars : Binaries : Eclipse Stars : Binaries : Individual (Ir Cassiopeiae)
AbstractThe near-contact binary IR Cas was observed in 2003 October. Two new observed times of the primary minimum were derived. All of the available eclipse times, including the new ones, spanning 90 years were analyzed. It was shown that the period change of the system is very complex. A period oscillation with a period of 53.24 years and an amplitude of about 0.0133 days were found, while it undergoes a secular decrease at a rate of dP/dt = -1.18 x 10(-7)(+/- 0.09)dyr(-1). The mechanisms that could explain the period changes and the evolutionary state of the system are discussed.
Language英语
Subject AreaAstronomy & Astrophysics
SubtypeArticle
ISSN0004-6264
URL查看原文
Archive Date2005-03-01
WOS IDWOS:000225043600009
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordORBITAL PERIOD ; CLOSE BINARIES ; MODULATION ; MASS
Citation statistics
Cited Times:16[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/5772
Collection双星与变星研究组
Corresponding AuthorZhu, LY (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Observ, POB 110, Kunming 650011, Peoples R China.
Affiliation1.National Astronomical Observatories/Yunnan Observatory, Chinese Academy of Sciences, P.O. Box 110, 650011 Kunming, P. R. China
2.United Laboratory of Optical Astronomy, Chinese Academy of Sciences (ULOAC), 100012 Beijing, P. R. China
3.Physics Department, Xiangtan University, 411105 Xiangtan, Hunan Province, P. R. China
4.Graduate School of the Chinese Academy of Sciences, P. R. China
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Zhu LY,Qian SB,Xiang, FY,et al. A period study of the near-contact binary IR Cassiopeiae[J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,2004,56(5):809-811.
APA Zhu LY,Qian SB,Xiang, FY,&Zhu, LY .(2004).A period study of the near-contact binary IR Cassiopeiae.PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,56(5),809-811.
MLA Zhu LY,et al."A period study of the near-contact binary IR Cassiopeiae".PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN 56.5(2004):809-811.
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