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The ALMA-QUARKS Survey. III. Clump-to-core Fragmentation and Searches for High-mass Starless Cores

文献类型：期刊论文

作者Yang, Dongting12; Liu, Hong-Li12; Liu, Tie11; Liu, Xunchuan11; Xu, Fengwei10,13; Qin, Sheng-Li12; Tej, Anandmayee8; Garay, Guido6,7; Zhu, Lei6; Mai, Xiaofeng5,11
刊名ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
出版日期2025-09-01
卷号280期号:1页码:33
ISSN号0067-0049
DOI10.3847/1538-4365/adf847
产权排序17
英文摘要The Querying Underlying mechanisms of massive star formation with ALMA-Resolved gas Kinematics and Structures (QUARKS) survey observed 139 infrared-bright (IR-bright) massive protoclusters at 1.3 mm wavelength with the Atacama Large Millimeter/submillimeter Array (ALMA). This study investigates clump-to-core fragmentation and searches for candidate high-mass starless cores within IR-bright clumps using combined ALMA 12 m (C-2) and Atacama Compact Array 7 m data, providing similar to 1 '' (similar to 0.02 pc at 3.7 kpc) resolution and similar to 0.6 mJy beam-1 continuum sensitivity (similar to 0.3 M circle dot at 30 K). We identified 1562 compact cores from 1.3 mm continuum emission using getsf. Observed linear core separations (lambda obs) are significantly less than the thermal Jeans length (lambda J), with the lambda obs/lambda J ratios peaking at similar to 0.2. This indicates that thermal Jeans fragmentation has taken place within the IR-bright protocluster clumps studied here. The observed low ratio of lambda obs/lambda J << 1 could be the result of evolving core separation or hierarchical fragmentation. Based on associated signatures of star formation (e.g., outflows and ionized gas), we classified cores into three categories: 127 starless, 971 warm, and 464 evolved cores. Two starless cores have masses exceeding 16 M circle dot, and represent high-mass candidates. The scarcity of such candidates suggests that competitive accretion-type models could be more applicable than turbulent core accretion-type models in high-mass star formation within these IR-bright protocluster clumps.
WOS关键词THERMAL JEANS FRAGMENTATION ; FORMING REGIONS MAGMAR ; 3-MILLIMETER OBSERVATIONS ; MAGNETIC-FIELDS ; DENSE CORES ; HIERARCHICAL FRAGMENTATION ; HOT CORES ; SPATIAL-DISTRIBUTION ; INITIAL CONDITIONS ; II. FRAGMENTATION
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)[12033005] ; Yunnan Fundamental Research Project[202301AT070118] ; Yunnan Fundamental Research Project[202401AS070121] ; Xingdian Talent Support Plan-Youth Project ; Scientific Research Fund Project of Yunnan Education Department[2025Y0106] ; Scientific Research Fund Project of Yunnan Education Department[KC-24248416] ; PIFI program of Chinese Academy of Sciences[2025PG0009] ; Tianchi Talent Program of Xinjiang Uygur Autonomous Region ; CPSF[2022M723278] ; Japan Society for the Promotion of Science (JSPS)[JP22H01271] ; Japan Society for the Promotion of Science (JSPS)[JP23H01221] ; Fondecyt Regular[1220610] ; ANID BASAL project ; National Natural Science Foundation of China[12373026] ; Leading Innovation and Entrepreneurship Team of Zhejiang Province of China[2023R01008] ; China Postdoctoral Science Foundation[2023TQ0330] ; Fondecyt Postdoctoral fellowship[3220162] ; JSPS KAKENHI[21H01142] ; JSPS KAKENHI[24K17096] ; JSPS KAKENHI[24H00252] ; JSPS KAKENHI[FB210003] ; UNAM-PAPIIT[IG100223] ; Sistema Nacional de Investigadores of SECIHTI ; SECIHTI[86372] ; S. N. Bose National Centre for Basic Sciences under the Department of Science and Technology, Govt. of India ; CSIR-HRDG, Govt. of India ; National Aeronautics and Space Administration ; CAS-ANID project[CAS220003]
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:001562736400001
出版者IOP Publishing Ltd
资助机构National Key R&D Program of China ; National Natural Science Foundation of China (NSFC) ; Yunnan Fundamental Research Project ; Xingdian Talent Support Plan-Youth Project ; Scientific Research Fund Project of Yunnan Education Department ; PIFI program of Chinese Academy of Sciences ; Tianchi Talent Program of Xinjiang Uygur Autonomous Region ; CPSF ; Japan Society for the Promotion of Science (JSPS) ; Fondecyt Regular ; ANID BASAL project ; National Natural Science Foundation of China ; Leading Innovation and Entrepreneurship Team of Zhejiang Province of China ; China Postdoctoral Science Foundation ; Fondecyt Postdoctoral fellowship ; JSPS KAKENHI ; UNAM-PAPIIT ; Sistema Nacional de Investigadores of SECIHTI ; SECIHTI ; S. N. Bose National Centre for Basic Sciences under the Department of Science and Technology, Govt. of India ; CSIR-HRDG, Govt. of India ; National Aeronautics and Space Administration ; CAS-ANID project
源URL[http://ir.xao.ac.cn/handle/45760611-7/8110]  
专题恒星形成与演化研究团组
通讯作者Yang, Dongting; Liu, Hong-Li; Liu, Tie; Liu, Xunchuan; Xu, Fengwei
作者单位1.Inst Univ France, Paris, France
2.Max Planck Inst Astron, Konigstuhl 17, D-69117 Heidelberg, Germany
3.Univ Nigeria, Fac Phys Sci, Dept Phys & Astron, Carver Bldg,1 Univ Rd, Nsukka 410001, Nigeria
4.Univ South Africa, Dept Math Sci, Cnr Christian de Wet Rd & Pioneer Ave, ZA-1709 Florida Pk, Roodepoort, South Africa
5.Univ Chinese Acad Sci, Sch Astron & Space Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China
6.Chinese Acad Sci, South Amer Ctr Astron, Natl Astron Observ, Beijing 100101, Peoples R China
7.Univ Chile, Dept Astron, Casilla 36-D, Santiago, Chile
8.Indian Inst Space Sci & Technol, Thiruvananthapuram 695547, Kerala, India
9.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China
10.Peking Univ, Kavli Inst Astron & Astrophys, 5 Yiheyuan Rd, Beijing 100871, Peoples R China
推荐引用方式
GB/T 7714		 Yang, Dongting,Liu, Hong-Li,Liu, Tie,et al. The ALMA-QUARKS Survey. III. Clump-to-core Fragmentation and Searches for High-mass Starless Cores[J]. ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,2025,280(1):33.
APA Yang, Dongting.,Liu, Hong-Li.,Liu, Tie.,Liu, Xunchuan.,Xu, Fengwei.,...&Chibueze, James O..(2025).The ALMA-QUARKS Survey. III. Clump-to-core Fragmentation and Searches for High-mass Starless Cores.ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,280(1),33.
MLA Yang, Dongting,et al."The ALMA-QUARKS Survey. III. Clump-to-core Fragmentation and Searches for High-mass Starless Cores".ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES 280.1(2025):33.

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