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ATOMS: ALMA three-millimetre observations of massive star-forming regions-XVII. High-mass star-formation through a large-scale collapse in IRAS 15394-5358

文献类型：期刊论文

作者Das, Swagat R21; Merello, Manuel21; Bronfman, Leonardo21; Liu, Tie20; Garay, Guido19,21; Stutz, Amelia18; Mardones, Diego21; Zhou, Jian-Wen17; Sanhueza, Patricio14,15,16; Liu, Hong-Li13
刊名MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
出版日期2024-10-23
卷号534期号:4页码:3832-3852
关键词stars: formation stars: kinematics and dynamics ISM: clouds ISM: individual objects: IRAS 15394-5358
ISSN号0035-8711
DOI10.1093/mnras/stae2275
产权排序第16完成单位
文献子类Article
英文摘要Hub-filament systems are considered as natural sites for high-mass star formation. Kinematic analysis of the surroundings of hub-filaments is essential to better understand high-mass star formation within such systems. In this work, we present a detailed study of the massive Galactic protocluster IRAS 15394-5358, using continuum and molecular line data from the ALMA three-millimetre observations of massive star-forming regions (ATOMS) survey. The 3 mm dust continuum map reveals the fragmentation of the massive (M=843 M-circle dot) clump into six cores. The core C-1A is the largest (radius = 0.04 pc), the most massive (M=157 M-circle dot), and lies within the dense central region, along with two smaller cores (M=7 and 3 M-circle dot). The fragmentation process is consistent with the thermal Jeans fragmentation mechanism and virial analysis shows that all the cores have small virial parameter values (alpha(vir)<<2), suggesting that the cores are gravitationally bound. The mass versus radius relation indicates that three cores can potentially form at least a single massive star. The integrated intensity map of (HCO+)-C-13 shows that the massive clump is associated with a hub-filament system, where the central hub is linked with four filaments. A sharp velocity gradient is observed towards the hub, suggesting a global collapse where the filaments are actively feeding the hub. We discuss the role of global collapse and the possible driving mechanisms for the massive star formation activity in the protocluster.
学科主题天文学 ; 恒星与银河系
URL标识查看原文
出版地GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
WOS关键词FILAMENTARY MOLECULAR CLOUDS ; GALACTIC PLANE SURVEY ; HIERARCHICAL FRAGMENTATION ; HOT CORES ; TEMPERATURE STRUCTURE ; JEANS FRAGMENTATION ; UNIVERSAL NURSERY ; ACCRETION FLOWS ; COMPLETE SAMPLE ; MAGNETIC-FIELD
资助项目Fondecyt Postdoctoral fellowship[3220162]; ANID BASAL project[FB210003]; Fondecyt Regular[1220610]; Yunnan Fundamental Research Project[202301AT070118]; Yunnan Fundamental Research Project[202401AS070121]; UNAM-PAPIIT[IG100223]; Sistema Nacional de Investigadores of CONAHCyT; CONAHCyT[86372]; Chinese Academy of Sciences (CAS); Research Council of Finland[348342]; Research Council of Finland[2019.1.00685]; JSPS[JP22H01271]; JSPS[JP23H01221]
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:001340463100008
出版者OXFORD UNIV PRESS
资助机构Fondecyt Postdoctoral fellowship[3220162] ; ANID BASAL project[FB210003] ; Fondecyt Regular[1220610] ; Yunnan Fundamental Research Project[202301AT070118, 202401AS070121] ; UNAM-PAPIIT[IG100223] ; Sistema Nacional de Investigadores of CONAHCyT ; CONAHCyT[86372] ; Chinese Academy of Sciences (CAS) ; Research Council of Finland[348342] ; Research Council of Finland[2019.1.00685] ; JSPS[JP22H01271, JP23H01221]
版本出版稿
源URL[http://ir.ynao.ac.cn/handle/114a53/27664]  
专题云南天文台_其他
作者单位1.Institute of Physics and Astronomy, Eotvos Lorand University, Pazmany Peter setany 1/A, H-1117 Budapest, Hungary
2.Korea Astronomy and Space Science Institute, 776 Daedeokdaero, Yuseong-gu, Daejeon 34055, Republic of Korea;
3.Department of Physics, University of Helsinki, PO Box 64, FI-00014 Helsinki, Finland;
4.SOFIA Science Centre, USRA, NASA Ames Research Centre, MS-12, N232, Moffett Field, CA 94035, USA;
5.Max Planck Institute of Astronomy, Königstuhl 17, D-69117 Heidelberg, Germany;
6.Yunnan Observatories, Chinese Academy of Sciences, 396 Yang-fangwang, Guandu District, Kunming 650216, P. R. China;
7.Physical Research Laboratory, Navrangpura, Ahmedabad 380 009, India;
8.S. N. Bose National Centre for Basic Sciences, Block-JD, Sector-III, Salt Lake City, Kolkata 700106, India;
9.Department of Astronomy, School of Physics, Peking University, Beijing 100871, P. R. China;
10.Kavli Institute for Astronomy and Astrophysics, Peking University, Beijing 100871, P. R. China;
推荐引用方式
GB/T 7714		 Das, Swagat R,Merello, Manuel,Bronfman, Leonardo,et al. ATOMS: ALMA three-millimetre observations of massive star-forming regions-XVII. High-mass star-formation through a large-scale collapse in IRAS 15394-5358[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2024,534(4):3832-3852.
APA Das, Swagat R.,Merello, Manuel.,Bronfman, Leonardo.,Liu, Tie.,Garay, Guido.,...&Toth, L Viktor.(2024).ATOMS: ALMA three-millimetre observations of massive star-forming regions-XVII. High-mass star-formation through a large-scale collapse in IRAS 15394-5358.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,534(4),3832-3852.
MLA Das, Swagat R,et al."ATOMS: ALMA three-millimetre observations of massive star-forming regions-XVII. High-mass star-formation through a large-scale collapse in IRAS 15394-5358".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 534.4(2024):3832-3852.

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