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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
DOI10.1007/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
ISSN0004-640X
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
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被引频次:3[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
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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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