Photometric analysis of a blue straggler eclipsing binary in the old open cluster NGC 2141

doi:10.1007/s11433-012-4814-6

YNAO OpenIR > 大样本恒星演化研究组

	Photometric analysis of a blue straggler eclipsing binary in the old open cluster NGC 2141
	Luo YP(罗杨平)1,2,3 ; Wang B(王博)1,2 ; Chen HL(陈海亮)1,2,3 ; Zhang, XB 4; Han ZW(韩占文)1,2 ; Luo, YP (reprint author), Chinese Acad Sci, Yunnan Observ, Natl Astron Observ, Kunming 650011, Peoples R China.
发表期刊	SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
	2012-08
卷号	55 期号:8 页码:1500-1504
DOI	10.1007/s11433-012-4814-6
分类号	P153
产权排序	第1完成单位
收录类别	SCI ; EI
关键词	Open Cluster Eclipsing Binary Blue Straggler Photometry
摘要	To understand the formation mechanism of blue stragglers in open clusters, we conducted a photometric analysis for a blue straggler eclipsing binary in the old open cluster NGC 2141. By using the least square fitting of times of minima, we derived the ephemeris and redetermined the orbital period of this system to be 0.6227 d. We have also done a photometric analysis for light curve with the Wilson-Devinney Code (2003). The photometric solutions reveal a semi-detached binary with the secondary component filling its Roche lobe. The photometric mass ratio M (2)/M (1) (secondary/primary) was determined to be 0.190 +/- 0.002 and the ratio of V-band luminosity L (2)/L (1)(V) is about 0.033 +/- 0.001, which indicates the secondary component is overluminous. Thus, this blue straggler likely results from a substantial mass exchange between these two components.
项目资助者	National Natural Science Foundation of China [11033008, 11103072] ; Chinese Academy of Sciences [KJCX2-YW-T24] ; National Basic Research Program of China [2009CB824800]
语种	英语
学科领域	Physics
文章类型	Article
ISSN	1674-7348
URL	查看原文
归档日期	2012-07-16
WOS记录号	WOS:000306176600025
WOS研究方向	Physics
WOS类目	Physics, Multidisciplinary
关键词[WOS]	MASS-TRANSFER ; LIGHT CURVES ; STAR LIGHT ; EVOLUTION ; MODELS
引用统计	被引频次：1[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/114a53/4526
专题	大样本恒星演化研究组中国科学院天体结构与演化重点实验室
通讯作者	Luo, YP (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, China 2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming, 650011, China 3.Graduate University of Chinese Academy of Sciences, Beijing, 100049, China 4.National Astronomical Observatories, Chinese Academy of Sciences, Beijing, 100012, 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	Luo YP,Wang B,Chen HL,et al. Photometric analysis of a blue straggler eclipsing binary in the old open cluster NGC 2141[J]. SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,2012,55(8):1500-1504.
APA	Luo YP,Wang B,Chen HL,Zhang, XB,Han ZW,&Luo, YP .(2012).Photometric analysis of a blue straggler eclipsing binary in the old open cluster NGC 2141.SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,55(8),1500-1504.
MLA	Luo YP,et al."Photometric analysis of a blue straggler eclipsing binary in the old open cluster NGC 2141".SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY 55.8(2012):1500-1504.

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