NAOC Open IR
A period study of the near-contact binary IR Cassiopeiae
Zhu, LY; Qian, SB; Xiang, FY
2004
Source PublicationPUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN
ISSN0004-6264
Volume56Issue:5Pages:809-811
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.
Keywordstars : binaries : close stars : binaries : eclipse stars : binaries : individual (IR Cassiopeiae)
WOS KeywordORBITAL PERIOD ; CLOSE BINARIES ; MODULATION ; MASS
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000225043600009
PublisherASTRONOMICAL SOC JAPAN
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Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/37449
Collection中国科学院国家天文台
Corresponding AuthorZhu, LY
Affiliation1.Chinese Acad Sci, Natl Astron Observ, Yunnan Observ, Kunming 650011, Peoples R China
2.Chinese Acad Sci, United Lab Opt Astron, ULOAC, Beijing 100012, 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
Recommended Citation
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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