PERIOD CHANGES AND FOUR-COLOR LIGHT CURVES OF THE ACTIVE OVERCONTACT BINARY V396 MONOCEROTIS

	PERIOD CHANGES AND FOUR-COLOR LIGHT CURVES OF THE ACTIVE OVERCONTACT BINARY V396 MONOCEROTIS
	Liu L(刘亮)1,2,3,4 ; Qian SB(钱声帮)1,2,3,4 ; Liao WP(廖文萍)1,2,3,4 ; He JJ(何家佳)1,2,3,4 ; Zhu LY(朱俐颖)1,2,3,4 ; Li LJ(李临甲)1,2,3,4 ; Zhao EG(赵二刚)1,2,3,4
刊名	ASTRONOMICAL JOURNAL
	2011-02
卷号	141 期号:2
关键词	binaries: close binaries: eclipsing stars: evolution stars: individual (V396 Mon)
ISSN号	0004-6256
通讯作者	Liu, L (reprint author), Chinese Acad Sci, Yunnan Observ, Natl Astron Observ, POB 110, Kunming 650011, Peoples R China.
产权排序	第一完成单位
英文摘要	This paper analyzes the first obtained four-color light curves of V396 Mon using the 2003 version of the W-D code. It is confirmed that V396 Mon is a shallow W-type contact binary system with a mass ratio q = 2.554(+/- 0.004) and a degree of contact factor f = 18.9%(+/- 1.2%). A period investigation based on all available data shows that the period of the system includes a long-term decrease (dP/dt = -8.57 x 10(-8) days yr(-1)) and an oscillation (A(3) = 0.0160 day, T-3 = 42.4 yr). They are caused by angular momentum loss and light-time effect, respectively. The suspect third body is possibly a small M-type star (about 0.31 solar mass). Though some observations indicate that this system has strong magnetic activity, by our analysis we found that the Applegate mechanism cannot explain the periodic changes. This binary is an especially important system according to Qian's statistics of contact binaries as its mass ratio lies near the proposed pivot point about which the physical structure of contact binaries supposedly oscillates.
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]	THERMAL RELAXATION OSCILLATION ; MASS-RATIO ; STARS ; SYSTEMS
收录类别	SCI
原文出处	http://iopscience.iop.org/article/10.1088/0004-6256/141/2/44/meta
语种	英语
WOS记录号	WOS:000286186100016
内容类型	期刊论文
源URL	[http://ir.ynao.ac.cn/handle/114a53/5858]
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, China 2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, 650011 Kunming, China 3.United Laboratory of Optical Astronomy, Chinese Academy of Sciences (ULOAC), 100012 Beijing, China 4.Graduate School of the CAS, Beijing, China
推荐引用方式 GB/T 7714	Liu L,Qian SB,Liao WP,et al. PERIOD CHANGES AND FOUR-COLOR LIGHT CURVES OF THE ACTIVE OVERCONTACT BINARY V396 MONOCEROTIS[J]. ASTRONOMICAL JOURNAL,2011,141(2).
APA	Liu L.,Qian SB.,Liao WP.,He JJ.,Zhu LY.,...&Zhao EG.(2011).PERIOD CHANGES AND FOUR-COLOR LIGHT CURVES OF THE ACTIVE OVERCONTACT BINARY V396 MONOCEROTIS.ASTRONOMICAL JOURNAL,141(2).
MLA	Liu L,et al."PERIOD CHANGES AND FOUR-COLOR LIGHT CURVES OF THE ACTIVE OVERCONTACT BINARY V396 MONOCEROTIS".ASTRONOMICAL JOURNAL 141.2(2011).