| A high-velocity star recently ejected by an intermediate-mass black hole in M15 | |
Huang, Yang1,2; Li QZ(李清政)3 ; Liu, Jifeng2,4,5; Dong XB(董小波)3; Zhang, Huawei6,7; Lu, Youjun1,2; Du, Cuihua1
| |
| 发表期刊 | NATIONAL SCIENCE REVIEW
 |
| 2025-02-10 | |
| 卷号 | 12期号:2 |
| DOI | 10.1093/nsr/nwae347 |
| 产权排序 | 第3完成单位 |
| 收录类别 | SCI |
| 关键词 | intermediate-mass black hole Hills mechanism hypervelocity star globular cluster large-scale survey |
| 摘要 | The existence of intermediate-mass black holes (IMBHs) is crucial for understanding various astrophysical phenomena, yet their existence remains elusive, except for the LIGO-Virgo detection. We report the discovery of a high-velocity star J0731+3717, whose backward trajectory about 21 Myr ago intersected that of globular cluster M15 within the cluster tidal radius. Both its metallicity [Fe/H] and alpha-to-iron abundance ratio [$\alpha$/Fe] are consistent with those of M15. Furthermore, its location falls right on the fiducial sequence of cluster M15 on the color-absolute magnitude diagram, suggesting similar ages. These findings support the notion that J0731+3717 was originally associated with M15 at a confidence level of 'seven nines'. We find that such a high-velocity star ($V_{\rm ej} = 548<^>{+6}_{-5}$ km s$<^>{-1}$) was most likely tidally ejected from as close as one astronomical unit to the center of M15, confirming an IMBH ($\ge 100 M_{\odot }$ with a credibility of 98%) as the exclusive nature of the central unseen mass proposed previously. This paper reports the discovery of a high-velocity star J07 ejected from globular cluster M15 approximately 21 million years ago, providing strong evidence for the presence of an IMBH constrained to within a few AU of the central region of M15. |
| 资助项目 | Strategic Priority Research Program of the Chinese Academy of Sciences[XDB0550103]; National Natural Science Foundation of China[12422303]; National Natural Science Foundation of China[11903027]; National Natural Science Foundation of China[11833006]; National Natural Science Foundation of China[11988101]; National Natural Science Foundation of China[11933004]; National Natural Science Foundation of China[12373013]; National Natural Science Foundation of China[11973001]; National Natural Science Foundation of China[12090040]; National Natural Science Foundation of China[12090044]; National Key R&D Program of China[2023YFA1608303]; National Key R&D Program of China[2019YFA0405503]; National Key R&D Program of China[2019YFA0405504]; New Cornerstone Science Foundation through the New Cornerstone Investigator Program; XPLORER PRIZE |
| 项目资助者 | Strategic Priority Research Program of the Chinese Academy of Sciences[XDB0550103] ; National Natural Science Foundation of China[12422303, 11903027, 11833006, 11988101, 11933004, 12373013, 11973001, 12090040, 12090044] ; National Key R&D Program of China[2023YFA1608303, 2019YFA0405503, 2019YFA0405504] ; New Cornerstone Science Foundation through the New Cornerstone Investigator Program ; XPLORER PRIZE |
| 语种 | 英语 |
| 学科领域 | 天文学 ; 天体物理学 ; 高能天体物理学 ; 星系与宇宙学 |
| 文章类型 | Article |
| 出版者 | OXFORD UNIV PRESS |
| 出版地 | GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND |
| ISSN | 2095-5138 |
| URL | 查看原文 |
| WOS记录号 | WOS:001416682800001 |
| WOS研究方向 | Science & Technology - Other Topics |
| WOS类目 | Multidisciplinary Sciences |
| 关键词[WOS] | GALACTIC GLOBULAR-CLUSTERS ; SPACE-TELESCOPE EVIDENCE ; GAIA EDR3 ; BINARIES ; PULSARS |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 版本 | 出版稿 |
| 条目标识符 | http://ir.ynao.ac.cn/handle/114a53/28125 |
| 专题 | 南方基地 |
| 作者单位 | 1.School of Astronomy and Space Science, University of Chinese Academy of Sciences, Beijing 100049, China; 2.National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China; 3.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, China; 4.New Cornerstone Science Laboratory, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China; 5.Institute for Frontiers in Astronomy and Astrophysics, Beijing Normal University, Beijing 102206, China; 6.Department of Astronomy, School of Physics, Peking University, Beijing 100871, China; 7.Kavli Institute for Astronomy and Astrophysics, Peking University, Beijing 100871, China |
| 推荐引用方式 GB/T 7714 | Huang, Yang,Li QZ,Liu, Jifeng,et al. A high-velocity star recently ejected by an intermediate-mass black hole in M15[J]. NATIONAL SCIENCE REVIEW,2025,12(2). |
| APA | Huang, Yang.,李清政.,Liu, Jifeng.,董小波.,Zhang, Huawei.,...&Du, Cuihua.(2025).A high-velocity star recently ejected by an intermediate-mass black hole in M15.NATIONAL SCIENCE REVIEW,12(2). |
| MLA | Huang, Yang,et al."A high-velocity star recently ejected by an intermediate-mass black hole in M15".NATIONAL SCIENCE REVIEW 12.2(2025). |
| 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 | ||
| A high-velocity star（708KB） | 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