| An Unexpected Detection of Bifurcated Blue Straggler Sequences in the Young Globular Cluster NGC 2173 | |
Li, Chengyuan1,2; Deng, Licai2,3; de Grijs, Richard2,4,5; Jiang DK(姜登凯)6,7,8 ; Xin, Yu3
| |
| 发表期刊 | ASTROPHYSICAL JOURNAL
 |
| 2018-03-20 | |
| 卷号 | 856期号:1 |
| DOI | 10.3847/1538-4357/aaad65 |
| 产权排序 | 第6完成单位 |
| 收录类别 | SCI |
| 关键词 | Blue Stragglers Galaxies: Star Clusters: Individual (Ngc 2173) Hertzsprung-russell And C-m Diagrams Magellanic Clouds Stars: Kinematics And Dynamics |
| 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. |
| 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] |
| 项目资助者 | 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] |
| 语种 | 英语 |
| 学科领域 | 天文学 ; 恒星与银河系 |
| 文章类型 | Article |
| 出版者 | IOP PUBLISHING LTD |
| 出版地 | TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND |
| ISSN | 0004-637X |
| URL | 查看原文 |
| WOS记录号 | WOS:000428455800011 |
| WOS研究方向 | Astronomy & Astrophysics |
| WOS类目 | Astronomy & Astrophysics |
| 关键词[WOS] | Large-magellanic-cloud ; Star-clusters ; Stellar Collisions ; Mass Function ; Binary ; Parameters ; Luminosity ; Evolution ; Origin ; Lmc |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.ynao.ac.cn/handle/114a53/12307 |
| 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 | 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). |
| 条目包含的文件 | ||||||
| 文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
| An Unexpected Detect（2096KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | 浏览 请求全文 | |
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。
修改评论