The ALMA-QUARKS Survey: Hot Molecular Cores Are a Long-standing Phenomenon in the Evolution of Massive Protostars
文献类型：期刊论文
| 作者 | Meng, Dezhao2,3,4; Liu, Tie3,4; Esimbek, Jarken2,3,5; Qin, Sheng-Li26; Garay, Guido1,25; Goldsmith, Paul F.24; Zhou, Jianjun2,3,5; Tang, Xindi2,3,5; Jiao, Wenyu4; Zhang, Yan-Kun4 |
| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 2026-02-01 |
| 卷号 | 997期号:2页码:340 |
| ISSN号 | 0004-637X |
| DOI | 10.3847/1538-4357/ae2602 |
| 产权排序 | 1 |
| 英文摘要 | We present an analysis of the QUARKS survey sample, focusing on protoclusters where hot molecular cores (HMCs; traced by CH3CN (12-11)) and HC/UC H ii regions (traced by H30 alpha/H40 alpha) coexist. Using the high-resolution, high-sensitivity 1.3 mm data from the QUARKS survey, we identify 125 hot molecular fragments (HMFs), which represent the substructures of HMCs at higher resolution. From line integrated intensity maps of CH3CN (123-113) and H30 alpha, we resolve the spatial distribution of HMFs and HC/UC H ii regions. By combining with observations of 12CO (2-1) outflows and 1.3 mm continuum, we classify HMFs into four types: HMFs associated with jetlike outflow, wide-angle outflow, and nondetectable outflow and shell-like HMFs near HC/UC H ii regions. This diversity possibly indicates that the hot core could be a polymorphic and long-standing phenomenon in the evolution of massive protostars. The separation between HMFs and H30 alpha/H40 alpha emission suggests that sequential high-mass star formation within young protoclusters is not likely related to feedback mechanisms. |
| WOS关键词 | H-II REGIONS ; STAR-FORMING REGIONS ; EXTRAORDINARY SOURCES ANALYSIS ; COMPLEX ORGANIC-MOLECULES ; LINE SURVEY ; ORION-KL ; HERSCHEL OBSERVATIONS ; 3-MILLIMETER OBSERVATIONS ; CHEMICAL EVOLUTION ; EARLY PHASES |
| 资助项目 | MOST divided by National Key Research and Development Program of China (NKPs)[2022YFA1603100] |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001674900100001 |
| 出版者 | IOP Publishing Ltd |
| 资助机构 | MOST divided by National Key Research and Development Program of China (NKPs) |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/8514]  |
| 专题 | 恒星形成与演化研究团组 |
| 通讯作者 | Meng, Dezhao; Liu, Tie; Esimbek, Jarken |
| 作者单位 | 1.Univ Chile, Dept Astron, Santiago 7591245, Chile 2.Chinese Acad Sci, State Key Lab Radio Astron & Technol, Xinjiang Astron Observ, 150 Sci 1-St, Urumqi 830011, Xinjiang, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100080, Peoples R China 4.Chinese Acad Sci, State Key Lab Radio Astron & Technol, Shanghai Astron Observ, 80 Nandan Rd, Shanghai 200030, Peoples R China 5.Xinjiang Key Lab Radio Astrophys, Urumqi 830011, Peoples R China 6.Univ Sci & Technol Korea UST, 217 Gajeong-Ro, Daejeon 34113, South Korea 7.Korea Astron & Space Sci Inst, 776 Daedeokdaero, Daejeon 34055, South Korea 8.Univ Tokyo, Sch Sci, Dept Astron, 7-3-1 Hongo,Bunkyo-Ku, Tokyo 1130033, Japan 9.Sun Yat Sen Univ, Sch Phys & Astron, 2 Daxue Rd, Zhuhai, Guangdong, Peoples R China 10.Univ Oslo, Inst Theoret Astrophys, POB 1029 Blindern, N-0315 Oslo, Norway |
| 推荐引用方式 GB/T 7714 | Meng, Dezhao,Liu, Tie,Esimbek, Jarken,et al. The ALMA-QUARKS Survey: Hot Molecular Cores Are a Long-standing Phenomenon in the Evolution of Massive Protostars[J]. ASTROPHYSICAL JOURNAL,2026,997(2):340. |
| APA | Meng, Dezhao.,Liu, Tie.,Esimbek, Jarken.,Qin, Sheng-Li.,Garay, Guido.,...&Ma, Yingxiu.(2026).The ALMA-QUARKS Survey: Hot Molecular Cores Are a Long-standing Phenomenon in the Evolution of Massive Protostars.ASTROPHYSICAL JOURNAL,997(2),340. |
| MLA | Meng, Dezhao,et al."The ALMA-QUARKS Survey: Hot Molecular Cores Are a Long-standing Phenomenon in the Evolution of Massive Protostars".ASTROPHYSICAL JOURNAL 997.2(2026):340. |
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