An Unexpected Detection of Bifurcated Blue Straggler Sequences in the Young Globular Cluster NGC 2173

doi:10.3847/1538-4357/aaad65

	An Unexpected Detection of Bifurcated Blue Straggler Sequences in the Young Globular Cluster NGC 2173
	Li, Chengyuan 1,2; Deng, Licai 2,3; de Grijs, Richard 2,4,5; Jiang DK(姜登凯)6,7,8 ; Xin, Yu3
刊名	ASTROPHYSICAL JOURNAL
	2018-03-20
卷号	856 期号:1
关键词	Blue Stragglers Galaxies: Star Clusters: Individual (Ngc 2173) Hertzsprung-russell And C-m Diagrams Magellanic Clouds Stars: Kinematics And Dynamics
ISSN号	0004-637X
DOI	10.3847/1538-4357/aaad65
产权排序	第6完成单位
文献子类	Article
英文摘要	The bifurcated patterns in the color-magnitude diagrams of blue straggler stars (BSSs) have attracted significant attention. This type of special (but rare) pattern of two distinct blue straggler sequences is commonly interpreted as evidence that cluster core-collapse-driven stellar collisions are an efficient formation mechanism. Here, we report the detection of a bifurcated blue straggler distribution in a young Large Magellanic Cloud cluster, NGC 2173. Because of the cluster's low central stellar number density and its young age, dynamical analysis shows that stellar collisions alone cannot explain the observed BSSs. Therefore, binary evolution is instead the most viable explanation of the origin of these BSSs. However, the reason why binary evolution would render the color-magnitude distribution of BSSs bifurcated remains unclear.
学科主题	天文学 ; 恒星与银河系
URL标识	查看原文
出版地	TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
资助项目	Macquarie Research Fellowship Scheme ; National Natural Science Foundation of China[11373010] ; Macquarie Research Fellowship Scheme ; National Natural Science Foundation of China[11390374] ; Macquarie Research Fellowship Scheme ; National Natural Science Foundation of China[11521303] ; Macquarie Research Fellowship Scheme ; National Natural Science Foundation of China[11573061] ; Macquarie Research Fellowship Scheme ; National Natural Science Foundation of China[11633005] ; Macquarie Research Fellowship Scheme ; National Natural Science Foundation of China[U1631102] ; Macquarie Research Fellowship Scheme ; National Natural Science Foundation of China[11661161016] ; National Key Basic Research Program of China[2014CB845700] ; National Key Research and Development Program of China[2017YFA0402702] ; Natural Science Foundation of Yunnan Province[2015FB190]
WOS关键词	Large-magellanic-cloud ; Star-clusters ; Stellar Collisions ; Mass Function ; Binary ; Parameters ; Luminosity ; Evolution ; Origin ; Lmc
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000428455800011
资助机构	Macquarie Research Fellowship Scheme ; National Natural Science Foundation of China[11373010, 11390374, 11521303, 11573061, 11633005, U1631102, 11661161016] ; National Key Basic Research Program of China[2014CB845700] ; National Key Research and Development Program of China[2017YFA0402702] ; Natural Science Foundation of Yunnan Province[2015FB190]
内容类型	期刊论文
源URL	[http://ir.ynao.ac.cn/handle/114a53/12307]
专题	云南天文台_大样本恒星演化研究组云南天文台_中国科学院天体结构与演化重点实验室
通讯作者	Li, Chengyuan
作者单位	1.Department of Physics and Astronomy, Macquarie University, Balaclava Road, North Ryde, NSW 2109, Australia 2.Department of Astronomy, China West Normal University, Nanchong 637002, People's Republic of China 3.School of Astronomy and Space Science, University of the Chinese Academy of Sciences, 20A Datun Road, Beijing 100012, People's Republic of China 4.Kavli Institute for Astronomy & Astrophysics and Department of Astronomy, Peking University, Yi He Yuan Lu 5, Beijing 100871, People's Republic of China 5.International Space Science Institute–Beijing, 1 Nanertiao, Zhongguancun, Beijing 100190, People's Republic of China 6.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, People's Republic of China 7.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650011, People's Republic of China 8.Center for Astronomical Mega-Science, Chinese Academy of Sciences, Beijing 100012, People's Republic of China
推荐引用方式 GB/T 7714	Li, Chengyuan,Deng, Licai,de Grijs, Richard,et al. An Unexpected Detection of Bifurcated Blue Straggler Sequences in the Young Globular Cluster NGC 2173[J]. ASTROPHYSICAL JOURNAL,2018,856(1).
APA	Li, Chengyuan,Deng, Licai,de Grijs, Richard,Jiang DK,&Xin, Yu.(2018).An Unexpected Detection of Bifurcated Blue Straggler Sequences in the Young Globular Cluster NGC 2173.ASTROPHYSICAL JOURNAL,856(1).
MLA	Li, Chengyuan,et al."An Unexpected Detection of Bifurcated Blue Straggler Sequences in the Young Globular Cluster NGC 2173".ASTROPHYSICAL JOURNAL 856.1(2018).