SS Ari: a shallow-contact close binary system

doi:10.1007/s10509-009-9999-4

YNAO OpenIR > 双星与变星研究组

	SS Ari: a shallow-contact close binary system
	Liu L(刘亮)1,2,3 ; Qian SB(钱声帮)1,2,3 ; He JJ(何家佳)1,2,3 ; Zhang J(张嘉)1,2,3 ; Li LJ(李临甲)1,2,3 ; Liu, L (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Observ, POB 110, Kunming 650011, Peoples R China.
发表期刊	ASTROPHYSICS AND SPACE SCIENCE
	2009-05
卷号	321 期号:1 页码:19-35
DOI	10.1007/s10509-009-9999-4
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 (Ss Ari) Stars: Evolution
摘要	Two CCD epochs of light minimum and a complete R light curve of SS Ari are presented. The light curve obtained in 2007 was analyzed with the 2003 version of the W-D code. It is shown that SS Ari is a shallow contact binary system with a mass ratio q=3.25 and a degree of contact factor f=9.4%(+/- 0.8%). A period investigation based on all available data shows that there may exist two distinct solutions about the assumed third body. One, assuming eccentric orbit of the third body and constant orbital period of the eclipsing pair, results in a massive third body with M (3)=1.73M (aS (TM)) and P (3)=87.0 yr. On the contrary, assuming continuous period changes of the eclipsing pair the orbital period of tertiary is 37.75 yr and its mass is about 0.278M (aS (TM)). Both of the cases suggest the presence of an unseen third component in the system.
项目资助者	Yunnan Natural Science Foundation [2005A0059M] ; Chinese Natural Science Foundation [10573032, 10433030, 10573013, 10778707] ; Ministry of Science and Technology of the Peoples Republic of China [2007CB815406] ; Chinese Academy of Sciences [O8ZKY11001, O8AXB51001]
语种	英语
学科领域	Astronomy & Astrophysics
文章类型	Article
ISSN	0004-640X
URL	查看原文
归档日期	2011-02-23
WOS记录号	WOS:000264831400003
WOS研究方向	Astronomy & Astrophysics
WOS类目	Astronomy & Astrophysics
关键词[WOS]	THERMAL RELAXATION OSCILLATION ; ORBITAL PERIOD CHANGES ; OVERCONTACT BINARIES ; ECLIPSING BINARIES ; LEONIS ; LIGHT ; COMPANION ; ARIETIS
引用统计	被引频次：12[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/114a53/5823
专题	双星与变星研究组
通讯作者	Liu, L (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, People’s Republic of China 2.United Laboratory of Optical Astronomy, Chinese Academy of Sciences (ULOAC), 100012, Beijing, People’s Republic of China 3.Graduate School of the CAS, Beijing, People’s Republic of China
第一作者单位	中国科学院云南天文台
推荐引用方式 GB/T 7714	Liu L,Qian SB,He JJ,et al. SS Ari: a shallow-contact close binary system[J]. ASTROPHYSICS AND SPACE SCIENCE,2009,321(1):19-35.
APA	Liu L,Qian SB,He JJ,Zhang J,Li LJ,&Liu, L .(2009).SS Ari: a shallow-contact close binary system.ASTROPHYSICS AND SPACE SCIENCE,321(1),19-35.
MLA	Liu L,et al."SS Ari: a shallow-contact close binary system".ASTROPHYSICS AND SPACE SCIENCE 321.1(2009):19-35.

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