PHOTOMETRIC STUDY OF THE POSSIBLE COOL QUADRUPLE SYSTEM PY VIRGINIS

	PHOTOMETRIC STUDY OF THE POSSIBLE COOL QUADRUPLE SYSTEM PY VIRGINIS
	Zhu LY(朱俐颖)1,2,3 ; Qian SB(钱声帮)1,2,3 ; Liu NP(刘念平)1,2,3 ; Liu L(刘亮)1,2 ; Jiang LQ(江林巧)1,2,3
刊名	ASTRONOMICAL JOURNAL
	2013-02
卷号	145 期号:2 页码:39-
关键词	binaries: close binaries: eclipsing stars: evolution stars: individual (PY Virginis)
ISSN号	0004-6256
通讯作者	Zhu, LY (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Observ, POB 110, Kunming 650011, Peoples R China.
产权排序	第一完成单位
英文摘要	Complete CCD photometric light curves in BV(RI)(c) bands obtained in 2012 for the short-period close binary system PY Virginis are presented. A new photometric analysis with the Wilson-Van Hamme code shows that PY Vir is an A-type marginal contact binary system. The absolute parameters of PY Vir are derived using spectroscopic and photometric solutions. Combining new determined times of minimum light with others published in the literature, the O - C diagram of the binary star is investigated. A periodic variation, with a period of 5.22(+/- 0.05) years and an amplitude of 0.0075(+/- 0.0004) days, was discovered. Since the spectrum of a third component has been detected by Rucinski et al., we consider this cyclic period oscillation to be the result of the light-time effect due to the presence of a third body. This third component may also be a binary itself. Therefore, PY Vir should be a quadruple system composed of two cool-type binary systems. This system is a good astrophysical laboratory to study the formation and evolution of close binaries and multiple systems.
学科主题	Astronomy & Astrophysics
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	BINARY-STAR LIGHT ; SKY AUTOMATED SURVEY ; ECLIPSING BINARY ; PARAMETERS ; CURVES ; EVOLUTION ; ORIGIN ; CANCRI
收录类别	SCI
原文出处	http://iopscience.iop.org/article/10.1088/0004-6256/145/2/39/meta
语种	英语
WOS记录号	WOS:000313571600013
内容类型	期刊论文
源URL	[http://ir.ynao.ac.cn/handle/114a53/5891]
专题	云南天文台_双星与变星研究组云南天文台_中国科学院天体结构与演化重点实验室
作者单位	1.National Astronomical Observatories/Yunnan Observatory, Chinese Academy of Sciences, P.O. Box 110, 650011 Kunming, People's Republic of China 2.Key Laboratory for the Structure and Evolution of Celestial Bodies, Chinese Academy of Sciences, P.O. Box 110, 650011 Kunming, People's Republic of China 3.Physical Sciences Department, Graduate University of the Chinese Academy of Sciences, Yuquan Road 19, Sijingshang Block, 100049 Beijing, People's Republic of China
推荐引用方式 GB/T 7714	Zhu LY,Qian SB,Liu NP,et al. PHOTOMETRIC STUDY OF THE POSSIBLE COOL QUADRUPLE SYSTEM PY VIRGINIS[J]. ASTRONOMICAL JOURNAL,2013,145(2):39-.
APA	Zhu LY,Qian SB,Liu NP,Liu L,&Jiang LQ.(2013).PHOTOMETRIC STUDY OF THE POSSIBLE COOL QUADRUPLE SYSTEM PY VIRGINIS.ASTRONOMICAL JOURNAL,145(2),39-.
MLA	Zhu LY,et al."PHOTOMETRIC STUDY OF THE POSSIBLE COOL QUADRUPLE SYSTEM PY VIRGINIS".ASTRONOMICAL JOURNAL 145.2(2013):39-.