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A photometric study of the W UMa-type eclipsing binary system GSC 0445-1993
Yang YG(杨远贵)1,2,3; Qian SB(钱声帮)1,2; Koppelman, MD4; Yang, YG (reprint author), Chinese Acad Sci, Yunnan Observ, Natl Astron Observ, Kunming 650011, Peoples R China.
发表期刊CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS
2005-04
卷号5期号:2页码:137-143
DOI10.1088/1009-9271/5/2/003
产权排序第1完成单位
收录类别SCI
关键词Stars : Binaries : Close Stars : Binaries : Eclipsing Star : Individual : Gsc 0445-1993
摘要Several new light minimum times for the eclipsing binary GSC 0445-1993 have been determined from the observations by Koppelman et al. and the orbital period of this system was revised. A photometric analysis was carried out using the 2003 version of the Wilson-Devinney code. The results reveal that GSC 0445-1993 is a W-type eclipsing binary with a mass ratio of q = 0.323(+/- 0.002) and an over-contact degree of f = 22.8%(+/- 4.2%). A small temperature difference between the components of AT = 135 K and an orbital inclination of i = 65.7 degrees(+/- 0.3 degrees) were obtained. The asymmetry of its light curve (i.e., the O'Connell effect) for this binary star is explained by the presence of a dark spot on the more massive component.
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN1009-9271
URL查看原文
归档日期2005-05-12
WOS记录号WOS:000228645800003
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]LIGHT-CURVE
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文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/5780
专题双星与变星研究组
通讯作者Yang, YG (reprint author), Chinese Acad Sci, Yunnan Observ, Natl Astron Observ, Kunming 650011, Peoples R China.
作者单位1.National Astronomical Observatories /Yunnan Observatory, Chinese Academy of Sciences, Kunming 650011
2.United Laboratory of Optical Astronomy, Chinese Academy of Sciences (ULOAC), Beijing
3.Graduate School of Chinese Academy of Sciences, Beijing 100039
4.Starhouse Observatory, 1523 Valders Ave N, Golden Valley, MN USA
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Yang YG,Qian SB,Koppelman, MD,et al. A photometric study of the W UMa-type eclipsing binary system GSC 0445-1993[J]. CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS,2005,5(2):137-143.
APA Yang YG,Qian SB,Koppelman, MD,&Yang, YG .(2005).A photometric study of the W UMa-type eclipsing binary system GSC 0445-1993.CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS,5(2),137-143.
MLA Yang YG,et al."A photometric study of the W UMa-type eclipsing binary system GSC 0445-1993".CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS 5.2(2005):137-143.
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