中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
A period study of the near-contact binary IR Cassiopeiae

文献类型:期刊论文

作者Zhu, LY; Qian, SB; Xiang, FY
刊名PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN
出版日期2004
卷号56期号:5页码:809-811
关键词stars : binaries : close stars : binaries : eclipse stars : binaries : individual (IR Cassiopeiae)
ISSN号0004-6264
英文摘要The 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.
WOS关键词ORBITAL PERIOD ; CLOSE BINARIES ; MODULATION ; MASS
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:000225043600009
出版者ASTRONOMICAL SOC JAPAN
源URL[http://ir.bao.ac.cn/handle/114a11/37448]  
专题中国科学院国家天文台
通讯作者Zhu, LY
作者单位1.Chinese Acad Sci, United Lab Opt Astron, ULOAC, Beijing 100012, Peoples R China
2.Chinese Acad Sci, Natl Astron Observ, Yunnan Observ, Kunming 650011, Peoples R China
3.Xiangtan Univ, Dept Phys, Xiangtan 411105, Hunan Province, Peoples R China
4.Chinese Acad Sci, Grad Sch, Beijing 100864, Peoples R China
推荐引用方式
GB/T 7714
Zhu, LY,Qian, SB,Xiang, FY. 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.(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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来源:国家天文台

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