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Detection of a Cyclic Period Change in the W UMa-Type System HT Virginis
Liao WP(廖文萍)1,2,3; Qian SB(钱声帮)1,2,3; Liao, WP (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
2010
Volume62Issue:3Pages:521-524
Contribution Rank第1完成单位
Indexed BySCI
KeywordStars: Binaries: Close Stars: Binaries: Eclipsing Stars: Individuals (Ht Virginis) Stars: Multiple
AbstractHT Vir is a well-known quadruple system with three components visible in the spectra. However, the cyclic variation of the O - C diagram has not been presented until now. To search for a variation in the O - C diagram of HT Vir, we monitored it from 2007 March to 2009 February, and as a result, 7 times of light minimum were obtained. Also, 3 times of light minimum were determined by us with photoelectric data obtained at Mt. Suhora observatory by using three channel photometers attached on the 60-cm Cassegrain telescope (Zola et al. 2005). Based on 56 times of light minimum, we report the discovery of a cyclic variation in the orbital period of HT Vir. It was found that the orbital period of the binary shows a 30.5 yr cyclic change with a semiamplitude of 0.0066 d. The period variation may be caused by a disturbance of component A to the contact system orbit. More times of light minimum with high precision are needed to check the nature of the O - C plot in the future.
Funding OrganizationChinese Natural Science Foundation [10973037, 10903026, 10778718] ; National Key Fundamental Research [2007CB815406] ; Yunnan Natural Science Foundation [2008CD157]
Language英语
Subject AreaAstronomy & Astrophysics
SubtypeArticle
ISSN0004-6264
URL查看原文
Archive Date2010-07-09
WOS IDWOS:000279835200003
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordCLOSE BINARY-SYSTEMS ; ECLIPSING BINARIES ; CONTACT BINARIES ; COMPONENTS ; STARS ; MODULATION ; EVOLUTION ; ALGOL ; VIR
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/5847
Collection双星与变星研究组
中国科学院天体结构与演化重点实验室
Corresponding AuthorLiao, WP (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.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences
3.Graduate School of the CAS, 100049, Beijing, P. R. China
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Liao WP,Qian SB,Liao, WP . Detection of a Cyclic Period Change in the W UMa-Type System HT Virginis[J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,2010,62(3):521-524.
APA Liao WP,Qian SB,&Liao, WP .(2010).Detection of a Cyclic Period Change in the W UMa-Type System HT Virginis.PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,62(3),521-524.
MLA Liao WP,et al."Detection of a Cyclic Period Change in the W UMa-Type System HT Virginis".PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN 62.3(2010):521-524.
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