Subclustering and Star Formation Efficiency in Three Protoclusters in the Central Molecular Zone
文献类型：期刊论文
| 作者 | Zhang, Suinan16; Lu, Xing16; Ginsburg, Adam17; Budaiev, Nazar17; Cheng, Yu18; Liu, Hauyu Baobab19,20; Liu, Tie16; Zhang, Qizhou21; Qiu, Keping2,3; Feng, Siyi4 |
| 刊名 | ASTROPHYSICAL JOURNAL LETTERS
 |
| 出版日期 | 2025-03-20 |
| 卷号 | 982期号:1页码:L10 |
| ISSN号 | 2041-8205 |
| DOI | 10.3847/2041-8213/adb30b |
| 产权排序 | 11 |
| 英文摘要 | We present the highest-resolution (similar to 0 .'' 04) Atacama Large Millimeter/submillimeter Array 1.3 mm continuum observations so far of three massive star-forming clumps in the Central Molecular Zone (CMZ), namely 20 km s-1 C1, 20 km s-1 C4, and Sgr C C4, which reveal prevalent compact millimeter emission. We extract the compact emission with astrodendro and identify a total of 199 fragments with a typical size of similar to 370 au, which represent the first sample of candidates of protostellar envelopes and disks and kernels of prestellar cores in these clumps that are likely forming star clusters. Compared with the protoclusters in the Galactic disk, the three protoclusters display a higher level of hierarchical clustering, likely a result of the stronger turbulence in the CMZ clumps. Compared with the mini-starbursts in the CMZ, Sgr B2 M and N, the three protoclusters also show stronger subclustering in conjunction with a lack of massive fragments. The efficiency of high-mass star formation of the three protoclusters is on average 1 order of magnitude lower than that of Sgr B2 M and N, despite a similar overall efficiency of converting gas into stars. The lower efficiency of high-mass star formation in the three protoclusters is likely attributed to hierarchical cluster formation. |
| WOS关键词 | GALACTIC-CENTER ; ALMA OBSERVATIONS ; MASSIVE CLOUDS ; INTERSTELLAR-MEDIUM ; MAGNETIC-FIELDS ; PRESTELLAR CORE ; CLUMPS ; DENSE ; GAS ; FRAGMENTATION |
| 资助项目 | MOST divided by National Key Research and Development Program of China (NKPs)https://doi.org/10.13039/501100012166[2023YFA1608204] ; MOST divided by National Key Research and Development Program of China (NKPs)https://doi.org/10.13039/501100012166[2022YFA1603103] ; National Key R&D Program of China[XDB0800300] ; Strategic Priority Research Program of the Chinese Academy of Sciences (CAS)[12425304] ; Strategic Priority Research Program of the Chinese Academy of Sciences (CAS)[U1731237] ; National Natural Science Foundation of China (NSFC)[23ZR1482100] ; Natural Science Foundation of Shanghai[xbzg-zdsys-202212] ; CAS Light of West China Program[JWST-GO-05365.001-A.] ; CAS Light of West China Program[JP24K17103] ; Space Telescope Science Institute ; JSPS[111-2112-M-110-022-MY3] ; JSPS[113-2112-M-110-022-MY3] ; National Science and Technology Council (NSTC) of Taiwan[12373023] ; National Science and Technology Council (NSTC) of Taiwan[1213308] ; National Science Foundation of China[2018.1.00641] ; ALMA[AAG 2008101] ; ALMA[2206511] ; ALMA[CAREER 2142300] ; NSF[2206512] ; National Science Foundation[80NSSC22K1125] ; National Aeronautics and Space Administration through the Astrophysics Data Analysis Program |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001444788500001 |
| 出版者 | IOP Publishing Ltd |
| 资助机构 | MOST divided by National Key Research and Development Program of China (NKPs)https://doi.org/10.13039/501100012166 ; National Key R&D Program of China ; Strategic Priority Research Program of the Chinese Academy of Sciences (CAS) ; National Natural Science Foundation of China (NSFC) ; Natural Science Foundation of Shanghai ; CAS Light of West China Program ; Space Telescope Science Institute ; JSPS ; National Science and Technology Council (NSTC) of Taiwan ; National Science Foundation of China ; ALMA ; NSF ; National Science Foundation ; National Aeronautics and Space Administration through the Astrophysics Data Analysis Program |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/7519]  |
| 专题 | 恒星形成与演化研究团组 |
| 通讯作者 | Zhang, Suinan |
| 作者单位 | 1.Liverpool John Moores Univ UK, Liverpool L3 5RF, England 2.Nanjing Univ, Sch Astron & Space Sci, 163 Xianlin Ave, Nanjing 210023, Peoples R China 3.Nanjing Univ, Key Lab Modern Astron & Astrophys, Minist Educ, Nanjing 210023, Peoples R China 4.Xiamen Univ, Dept Astron, Zengcuoan West Rd, Xiamen 361005, Peoples R China 5.MIT, Haystack Observ, 99 Millstone Rd, Westford, MA 01886 USA 6.Xinjiang Astron Observ, 150 Sci 1 St, Urumqi, Xinjiang, Peoples R China 7.Univ Chinese Acad Sci, Beijing, Peoples R China 8.Chinese Acad Sci, Key Lab Radio Astron, Urumqi 830011, Peoples R China 9.Xinjiang Key Lab Radio Astrophys, Urumqi 830011, Peoples R China 10.Univ Kansas, Dept Phys & Astron, 1251 Wescoe Hall Dr, Lawrence, KS USA |
| 推荐引用方式 GB/T 7714 | Zhang, Suinan,Lu, Xing,Ginsburg, Adam,et al. Subclustering and Star Formation Efficiency in Three Protoclusters in the Central Molecular Zone[J]. ASTROPHYSICAL JOURNAL LETTERS,2025,982(1):L10. |
| APA | Zhang, Suinan.,Lu, Xing.,Ginsburg, Adam.,Budaiev, Nazar.,Cheng, Yu.,...&Shen, Zhiqiang.(2025).Subclustering and Star Formation Efficiency in Three Protoclusters in the Central Molecular Zone.ASTROPHYSICAL JOURNAL LETTERS,982(1),L10. |
| MLA | Zhang, Suinan,et al."Subclustering and Star Formation Efficiency in Three Protoclusters in the Central Molecular Zone".ASTROPHYSICAL JOURNAL LETTERS 982.1(2025):L10. |
入库方式： OAI收割
来源：新疆天文台
浏览0
下载0
收藏0
其他版本
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。