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Revision of the photometric parameters of BS Cassiopeiae
He JJ(何家佳)1,2,3; Qian SB(钱声帮)1,2,3; Zejda, M4; Mikulasek, Z4,5; He, JJ (reprint author), Chinese Acad Sci, Yunnan Observ, Natl Astron Observ, Key Lab Struct & Evolut Celestial Objects, Kunming 650011, Peoples R China.
发表期刊RESEARCH IN ASTRONOMY AND ASTROPHYSICS
2010-06
卷号10期号:6页码:569-576
DOI10.1088/1674-4527/10/6/006
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: Bs Cas
摘要Seven charge-coupled device (CCD) photometric times of light minimum of the overcontact binary BS Cas which were obtained from 2007 August to November and one CCD light curve in the R band which was observed on 2007 September 24 and October 15, are presented. It is found that the light curve of BS Cas has characteristics like a typical EW-type light variation. The light curve obtained by us is symmetric and shows total eclipses, which is very useful for determining photometric parameters with high precision. Photometric solutions were derived by using the 2003 version of the Wilson-Devinney code. It shows that BS Cas is a W-subtype overcontact binary (f = 27.5% +/- 0.4%) with a mass ratio of q = 2.7188 +/- 0.0040. The temperature difference between the two components is 190 K. Analysis of the O-C curve suggests that the period of AE Phe shows a long-term continuous decrease at a rate of dP/dt = -2.45 x 10(-7) d yr(-1). The long-time period decrease can be explained by mass transfer from the primary to the secondary.
项目资助者National Natural Science Foundation of China [10973037, 10903026, 10778718] ; National Key Fundamental Research Project [2007CB815406] ; Yunnan Natural Science Foundation [2008CD157, 2009CD122]
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN1674-4527
URL查看原文
归档日期2010-07-09
WOS记录号WOS:000279087400006
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]ECLIPSING BINARY ; STARS
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文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/5840
专题双星与变星研究组
中国科学院天体结构与演化重点实验室
通讯作者He, JJ (reprint author), Chinese Acad Sci, Yunnan Observ, Natl Astron Observ, Key Lab Struct & Evolut Celestial Objects, Kunming 650011, Peoples R China.
作者单位1.National Astronomical Observatories / Yunnan Observatory, Chinese Academy of Sciences, Kunming 650011, China
2.Graduate University of the Chinese Academy of Sciences, Beijing 100049, China
3.Key Laboratory for the Structure and Evolution of Celestial Objects, National Astronomical Observatories/Yunnan Observatory, Chinese Academy of Sciences, Kunming 650011, China
4.Institute of Theoretical Physics and Astrophysics, Masaryk University, Kotlářská 2, 611 37 Brno, Czech Republic
5.Observatory and Planetarium of J. Palisa, VŠB- Technical University, Ostrava, Czech Republic
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He JJ,Qian SB,Zejda, M,et al. Revision of the photometric parameters of BS Cassiopeiae[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2010,10(6):569-576.
APA He JJ,Qian SB,Zejda, M,Mikulasek, Z,&He, JJ .(2010).Revision of the photometric parameters of BS Cassiopeiae.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,10(6),569-576.
MLA He JJ,et al."Revision of the photometric parameters of BS Cassiopeiae".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 10.6(2010):569-576.
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