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RV Piscium: a marginal contact binary system
He JJ(何家佳)1,2,3; Qian SB(钱声帮)1,2,3; He, JJ (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
2009-06
卷号321期号:3-4页码:209-215
DOI10.1007/s10509-009-0030-x
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 Individual (Rv Psc) Stars Evolution
摘要The first complete charge-coupled device (CCD) light curves in B and V bands of the short-period binary system, RV Psc, are presented. It is found that the light curves of RV Psc are symmetric and belong to the EW type rather than the EA type as described in the 4th edition of the GCVS. Photometric solutions were derived by using the 2003 version of the Wilson-Devinney (W-D) method. It is shown that RV Psc is a marginal contact system (f=5.8%+/- 6.6%) with a mass ratio of q=0.5978 +/- 0.0096. The temperature difference between both components is only 17 K. Analysis of the O-C curve suggests that the period of RV Psc shows a long-term continuous decrease at a rate of dP/dt=-5.89x10(-8) days/year. The long-time period decrease, the marginal-contact configuration, and the astrophysical parameters of the binary system, all suggest that it is a newly formed marginal contact binary from a case A mass transfer and will evolve into a normal overcontact binary.
项目资助者Yunnan Natural Science Foundation [2005A0059M] ; Chinese Natural Science [10573032, 10433030] ; National Key Fundamental Research Project [2007CB815406] ; Chinese Academy of Sciences [O8ZKY11001]
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2009-06-02
WOS记录号WOS:000266372200007
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]STARS ; PERIOD
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文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/5822
专题双星与变星研究组
通讯作者He, JJ (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 University of the Chinese Academy of Sciences, 10049, Beijing, People’s Republic of China
推荐引用方式
GB/T 7714
He JJ,Qian SB,He, JJ . RV Piscium: a marginal contact binary system[J]. ASTROPHYSICS AND SPACE SCIENCE,2009,321(3-4):209-215.
APA He JJ,Qian SB,&He, JJ .(2009).RV Piscium: a marginal contact binary system.ASTROPHYSICS AND SPACE SCIENCE,321(3-4),209-215.
MLA He JJ,et al."RV Piscium: a marginal contact binary system".ASTROPHYSICS AND SPACE SCIENCE 321.3-4(2009):209-215.
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