Direct Observational Evidence of Multi-epoch Massive Star Formation in G24.47+0.49
文献类型：期刊论文
| 作者 | Saha, Anindya24; Tej, Anandmayee24; Liu, Hong-Li23; Liu, Tie21,22; Garay, Guido20; Goldsmith, Paul F.19; Lee, Chang Won17,18; He JH(何金华)15,16,20 ; Juvela, Mika14; Bronfman, Leonardo20
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| 刊名 | ASTROPHYSICAL JOURNAL LETTERS
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| 出版日期 | 2024-08-01 |
| 卷号 | 970期号:2 |
| ISSN号 | 2041-8205 |
| DOI | 10.3847/2041-8213/ad6144 |
| 产权排序 | 第9完成单位 |
| 文献子类 | Article |
| 英文摘要 | Using new continuum and molecular line data from the Atacama Large Millimeter/submillimeter Array Three-millimeter Observations of Massive Star-forming Regions (ATOMS) survey and archival Very Large Array, 4.86 GHz data, we present direct observational evidence of hierarchical triggering relating three epochs of massive star formation in a ringlike H ii region, G24.47+0.49. We find from radio flux analysis that it is excited by a massive star(s) of spectral type O8.5V-O8V from the first epoch of star formation. The swept-up ionized ring structure shows evidence of secondary collapse, and within this ring, a burst of massive star formation is observed in different evolutionary phases, which constitutes the second epoch. ATOMS spectral line (e.g., HCO+(1-0)) observations reveal an outer concentric molecular gas ring expanding at a velocity of similar to 9 km s-1, constituting the direct and unambiguous detection of an expanding molecular ring. It harbors twelve dense molecular cores with surface mass density greater than 0.05 g cm-2, a threshold typical of massive star formation. Half of them are found to be subvirial and thus in gravitational collapse making them the third epoch of potential massive star-forming sites. |
| 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 |
| WOS关键词 | H-II REGIONS ; ALMA 3-MILLIMETER OBSERVATIONS ; RESOLUTION RADIO-CONTINUUM ; COMPACT HII-REGIONS ; FORMING REGIONS ; MOLECULAR CLOUDS ; COMPLETE SAMPLE ; ULTRACOMPACT ; ATLASGAL ; DUST |
| 资助项目 | National Key R&D Program of China[2022YFA1603101]; National Natural Science Foundation of China (NSFC)[12073061]; National Natural Science Foundation of China (NSFC)[12122307]; National Natural Science Foundation of China (NSFC)[12103045]; Yunnan Fundamental Research Project[202301AT070118]; Yunnan Fundamental Research Project[202401AS070121]; Xingdian Talent Support Plan-Youth Project; Chinese Academy of Sciences[114231KYSB20200009]; Xinjiang Uygur Autonomous Region[FB210003]; National Aeronautics and Space Administration[80NM0018D0004]; Chinese Academy of Sciences (CAS); CAS South America Center for Astronomy (CASSACA) in Santiago, Chile; ALMA[348342]; Research Council of Finland; NSF (USA)[150551]; South African Department of Science and Innovation's National Research Foundation; NINS (Japan)[2019.1.00685]; ASIAA (Taiwan); KASI (Republic of Korea); ESO; NAOJ |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001279958300001 |
| 出版者 | IOP Publishing Ltd |
| 资助机构 | National Key R&D Program of China[2022YFA1603101] ; National Natural Science Foundation of China (NSFC)[12073061, 12122307, 12103045] ; Yunnan Fundamental Research Project[202301AT070118, 202401AS070121] ; Xingdian Talent Support Plan-Youth Project ; Chinese Academy of Sciences[114231KYSB20200009] ; Xinjiang Uygur Autonomous Region[FB210003] ; National Aeronautics and Space Administration[80NM0018D0004] ; Chinese Academy of Sciences (CAS) ; CAS South America Center for Astronomy (CASSACA) in Santiago, Chile ; ALMA[348342] ; Research Council of Finland ; NSF (USA)[150551] ; South African Department of Science and Innovation's National Research Foundation ; NINS (Japan)[2019.1.00685] ; ASIAA (Taiwan) ; KASI (Republic of Korea) ; ESO ; NAOJ |
| 版本 | 出版稿 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/27512]  |
| 专题 | 云南天文台_其他 |
| 作者单位 | 1.University of Debrecen, Institute of Physics, H-4026, Debrecen, Bem ter 18, Hungary 2.Institute of Physics and Astronomy, Eötvös Lorànd University, Pázmány Péter sétány 1/A, H-1117 Budapest, Hungary; 3.I. Physikalisches Institut, Universität zu Köln, Zülpicher Str. 77, D-50937 Köln, Germany; 4.Department of Astronomy, School of Physics, Peking University, Beijing, 100871, People's Republic of China; 5.Kavli Institute for Astronomy and Astrophysics, Peking University, Beijing 100871, People's Republic of China; 6.Physical Research Laboratory, Navrangpura, Ahmedabad 380009, India; 7.Department of Physics and Astronomy, Faculty of Physical Sciences, University of Nigeria, Carver Building, 1 University Road, Nsukka 410001, Nigeria; 8.Department of Mathematical Sciences, University of South Africa, Cnr Christian de Wet Rd and Pioneer Avenue, Florida Park, 1709, Roodepoort, South Africa; 9.Max Planck Institute for Astronomy, Königstuhl 17, D-69117 Heidelberg, Germany; 10.Astronomical Science Program, The Graduate University for Advanced Studies, SOKENDAI, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan; |
| 推荐引用方式 GB/T 7714 | Saha, Anindya,Tej, Anandmayee,Liu, Hong-Li,et al. Direct Observational Evidence of Multi-epoch Massive Star Formation in G24.47+0.49[J]. ASTROPHYSICAL JOURNAL LETTERS,2024,970(2). |
| APA | Saha, Anindya.,Tej, Anandmayee.,Liu, Hong-Li.,Liu, Tie.,Garay, Guido.,...&Tóth, L. Viktor.(2024).Direct Observational Evidence of Multi-epoch Massive Star Formation in G24.47+0.49.ASTROPHYSICAL JOURNAL LETTERS,970(2). |
| MLA | Saha, Anindya,et al."Direct Observational Evidence of Multi-epoch Massive Star Formation in G24.47+0.49".ASTROPHYSICAL JOURNAL LETTERS 970.2(2024). |
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来源：云南天文台
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