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Long-term orbital period variations for EU hydrae
Qian SB(钱声帮)1,2; Boonrucksar, S3; Qian, SB (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
2003
Volume55Issue:2Pages:499-502
DOI10.1093/pasj/55.2.499
Contribution Rank第1完成单位
Indexed BySCI
KeywordStars : Activity Stars : Binaries : Close Stars : Binaries : Eclipsing Stars : Individual (Eu Hydrae) Stars : Mass-loss
AbstractLong-term period variations of an Algol-type eclipsing binary star, EU Hydrae, are presented based on an analysis of its O - C curve. As in the cases of other Algols studied in recent papers by one of the authors (S.-B. Qian), an alternate period change has discovered to superimpose on a secular period decrease (dP/dt = -4.8 x 10(-8) d yr(-1)). By assuming that the alternate variation is cyclic, a period of 26.5 yr and an amplitude of 0.0104 d were determined. A long-term period decrease combined with a semi-detached configuration may indicate that EU Hya is undergoing a secular angular momentum loss. Three possible mechanisms are proposed to explain the alternate period change.
Language英语
Subject AreaAstronomy & Astrophysics
SubtypeArticle
ISSN0004-6264
URL查看原文
Archive Date2003-06-18
WOS IDWOS:000182614100018
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordANGULAR-MOMENTUM LOSS ; ALGOL-TYPE BINARIES ; POSSIBLE MASS ; CLOSE BINARIES ; PERSEI ; MODULATION ; DELPHINI ; CYGNI
Citation statistics
Cited Times:6[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/5767
Collection双星与变星研究组
Corresponding AuthorQian, SB (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.Astronomy Research Unit, Department of Physics, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Qian SB,Boonrucksar, S,Qian, SB . Long-term orbital period variations for EU hydrae[J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,2003,55(2):499-502.
APA Qian SB,Boonrucksar, S,&Qian, SB .(2003).Long-term orbital period variations for EU hydrae.PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,55(2),499-502.
MLA Qian SB,et al."Long-term orbital period variations for EU hydrae".PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN 55.2(2003):499-502.
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