AN ECLIPSING BLUE STRAGGLER IN THE GLOBULAR CLUSTER omega CENTAURI

doi:10.1088/0004-6256/144/6/161

YNAO OpenIR > 双星与变星研究组

	AN ECLIPSING BLUE STRAGGLER IN THE GLOBULAR CLUSTER omega CENTAURI
	Li K(李凯)1,2,3 ; Qian SB(钱声帮)1,2,3 ; Kai, L (reprint author), Chinese Acad Sci, Yunnan Observ, Natl Astron Observ, POB 110, Kunming 650011, Peoples R China.
发表期刊	ASTRONOMICAL JOURNAL
	2012-12
卷号	144 期号:6 页码:161-165
DOI	10.1088/0004-6256/144/6/161
产权排序	第1完成单位
收录类别	SCI
关键词	Binaries: Close Binaries: Eclipsing Blue Stragglers Globular Clusters: Individual (Omega Centauri) Stars: Individual (V239)
摘要	omega Centauri is the largest globular cluster in the Milky Way and hence contains the largest number of variable stars within a single cluster. The results of photometric solutions are presented for the EA-type binary V239 in this cluster. According to our analysis, V239 is a typical Algol-type binary. We obtain M = 1.20 +/- 0.10 M-circle dot, R = 1.21 +/- 0.03 R-circle dot, and L = 13.68 +/- 0.63 L-circle dot for the primary component. The secondary component has M = 0.07 +/- 0.02 M-circle dot, R = 0.90 +/- 0.03 R-circle dot, and L = 2.17 +/- 0.14 L-circle dot. The binary system is located in the blue straggler region on the color-magnitude diagram of omega Centauri and the mass of the primary component exceeds the mass of a turnoff star. Therefore, we think that V239 is a blue straggler and that V239 was formed by mass transfer from the present secondary component to the present primary.
项目资助者	Chinese Natural Science Foundation [11133007, 10973037, 10903026, 11103074] ; West Light Foundation of the Chinese Academy of Sciences
语种	英语
学科领域	Astronomy & Astrophysics
文章类型	Article
ISSN	0004-6256
URL	查看原文
归档日期	2012-12-10
WOS记录号	WOS:000311165400004
WOS研究方向	Astronomy & Astrophysics
WOS类目	Astronomy & Astrophysics
关键词[WOS]	EXPERIMENT. VARIABLE-STARS ; MAIN-SEQUENCE ; CCD PHOTOMETRY ; BINARY-SYSTEMS ; MASS-TRANSFER ; LIGHT CURVES ; CATALOG ; ORIGIN ; FIELD ; POPULATION
引用统计	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/114a53/5859
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	Kai, L (reprint author), Chinese Acad Sci, Yunnan Observ, Natl Astron 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, China 2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, 650011 Kunming, China 3.Graduate School of the CAS, 100049 Beijing, 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	Li K,Qian SB,Kai, L . AN ECLIPSING BLUE STRAGGLER IN THE GLOBULAR CLUSTER omega CENTAURI[J]. ASTRONOMICAL JOURNAL,2012,144(6):161-165.
APA	Li K,Qian SB,&Kai, L .(2012).AN ECLIPSING BLUE STRAGGLER IN THE GLOBULAR CLUSTER omega CENTAURI.ASTRONOMICAL JOURNAL,144(6),161-165.
MLA	Li K,et al."AN ECLIPSING BLUE STRAGGLER IN THE GLOBULAR CLUSTER omega CENTAURI".ASTRONOMICAL JOURNAL 144.6(2012):161-165.

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