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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.
发表期刊PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN
2010
卷号62期号:3页码:521-524
产权排序第1完成单位
收录类别SCI
关键词Stars: Binaries: Close Stars: Binaries: Eclipsing Stars: Individuals (Ht Virginis) Stars: Multiple
摘要HT 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.
项目资助者Chinese Natural Science Foundation [10973037, 10903026, 10778718] ; National Key Fundamental Research [2007CB815406] ; Yunnan Natural Science Foundation [2008CD157]
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN0004-6264
URL查看原文
归档日期2010-07-09
WOS记录号WOS:000279835200003
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]CLOSE BINARY-SYSTEMS ; ECLIPSING BINARIES ; CONTACT BINARIES ; COMPONENTS ; STARS ; MODULATION ; EVOLUTION ; ALGOL ; VIR
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被引频次:2[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/5847
专题双星与变星研究组
中国科学院天体结构与演化重点实验室
通讯作者Liao, WP (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Observ, POB 110, Kunming 650011, Peoples R China.
作者单位1.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
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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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