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Coevolution of Giant Molecular Clouds, Filaments, and Clumps as a Function of the Dense Gas Mass Fraction

文献类型：期刊论文

作者Zhang, Wenjun2,3; Zhou, Jianjun2,4,5; Esimbek, Jarken2,4,5; Baan, Willem2,6; Tang, Xindi2,3,4,5; Li, Dalei2,3,5; He, Yuxin2,3,5; Wu, Gang2,7; Zhou, Dongdong2; Ma, Yingxiu2
刊名ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
出版日期2024-11-01
卷号275期号:1页码:7
ISSN号0067-0049
DOI10.3847/1538-4365/ad7828
产权排序1
英文摘要We investigate the evolutionary dynamics with archival continuum and line data of 27 giant molecular clouds (GMCs) in the Milky Way, focusing on their influence on star formation. Examining the dense gas mass fraction (DGMF) among the GMCs, we categorize them into low-DGMF (DGMF < 20%), medium-DGMF (20% < DGMF < 60%), and high-DGMF (60% < DGMF) groups. The analysis uncovers systematic trends in the free-fall time, virial parameter, surface density, star formation rate (SFR), SFR per unit area (Sigma SFR), and star formation efficiency for dense gas as the DGMF increases within GMCs. We identified 362 filaments and 3623 clumps within the GMCs. Increasing DGMF correlates with higher proportions of star-forming clumps and clumps capable of forming massive stars. Clump properties such as hydrogen number density and surface density increase with DGMF, while the mass and radius decrease. The dust temperature and virial parameters show no significant variation with DGMF. We also observe convergence in the hydrogen number density and dust temperature between star-forming and starless clumps with rising DGMF. Filaments are found to be spatially associated with clumps capable of forming high-mass stars, with those on filaments exhibiting greater mass, radius, hydrogen number density, surface density, and velocity dispersion. Moreover, filaments hosting clumps capable of forming high-mass stars demonstrate larger mass, length, and line mass. In summary, this comprehensive analysis of GMCs, filaments, and clumps supports the notion of a multiscale coevolution process. From GMCs to filaments and subsequently to clumps, the DGMF emerges as a valuable tracer for understanding the evolutionary trajectory of GMCs and the processes governing their development.
WOS关键词STAR-FORMING REGIONS ; INFRARED-DARK CLOUDS ; PHYSICAL-PROPERTIES ; HI-GAL ; GRAVITATIONAL COLLAPSE ; VELOCITY-COHERENT ; FORMATION RATES ; SPIRAL ARMS ; TURBULENCE ; IDENTIFICATION
资助项目MOST divided by National Key Research and Development Program of China (NKPs)https://doi.org/10.13039/501100012166[2023YFA1608002] ; National Key R&D Program of China[12373029] ; National Natural Science Foundation of China (NSFC)[12173075] ; National Natural Science Foundation of China (NSFC)[12103082] ; NSFC[2022D01E06] ; NSFC[2022D01A359] ; NSFC[2022D01A362] ; NSFC[2023D01A11] ; Natural Science Foundation of Xinjiang Uygur Autonomous Region[2022TSYCLJ0005] ; Tianshan Talent Program of Xinjiang Uygur Autonomous Region ; Xinjiang Uygur Autonomous Region[2020-XBQNXZ-017] ; Xinjiang Uygur Autonomous Region[2021-XBQNXZ-028] ; Xinjiang Uygur Autonomous Region[2022-XBJCTD-003] ; Xinjiang Uygur Autonomous Region[xbzg-zdsys-202212] ; Chinese Academy of Sciences (CAS) Light of West China Program[2022E01050] ; Regional Collaborative Innovation Project of XinJiang Uyghur Autonomous Region[AP13067768] ; Science Committee of the Ministry of Science and Higher Education of the Republic of Kazakhstan[2023VMA0030] ; Chinese Academy of Sciences President International Fellowship Initiative
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:001346608400001
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 ; National Natural Science Foundation of China (NSFC) ; NSFC ; Natural Science Foundation of Xinjiang Uygur Autonomous Region ; Tianshan Talent Program of Xinjiang Uygur Autonomous Region ; Xinjiang Uygur Autonomous Region ; Chinese Academy of Sciences (CAS) Light of West China Program ; Regional Collaborative Innovation Project of XinJiang Uyghur Autonomous Region ; Science Committee of the Ministry of Science and Higher Education of the Republic of Kazakhstan ; Chinese Academy of Sciences President International Fellowship Initiative
源URL[http://ir.xao.ac.cn/handle/45760611-7/7126]  
专题研究单元未命名
恒星形成与演化研究团组
通讯作者Zhou, Jianjun; Esimbek, Jarken
作者单位1.Al Farabi Kazakh Natl Univ, Fac Phys & Technol, Alma Ata 050040, Kazakhstan
2.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Chinese Acad Sci, Key Lab Radio Astron & Technol, A20 Datun Rd, Beijing 100101, Peoples R China
5.Xinjiang Key Lab Radio Astrophys, Urumqi 830011, Peoples R China
6.ASTRON, Netherlands Inst Radio Astron, NL-7991 PD Dwingeloo, Netherlands
7.Max Planck Inst Radioastron, Hugel 69, D-53121 Bonn, Germany
8.Handan Univ, Coll Math & Phys, 530 Xueyuan Rd, Handan 056005, Peoples R China
9.Nazarbayev Univ, Energet Cosmos Lab, Astana 010000, Kazakhstan
推荐引用方式
GB/T 7714		 Zhang, Wenjun,Zhou, Jianjun,Esimbek, Jarken,et al. Coevolution of Giant Molecular Clouds, Filaments, and Clumps as a Function of the Dense Gas Mass Fraction[J]. ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,2024,275(1):7.
APA Zhang, Wenjun.,Zhou, Jianjun.,Esimbek, Jarken.,Baan, Willem.,Tang, Xindi.,...&Komesh, Toktarkhan.(2024).Coevolution of Giant Molecular Clouds, Filaments, and Clumps as a Function of the Dense Gas Mass Fraction.ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,275(1),7.
MLA Zhang, Wenjun,et al."Coevolution of Giant Molecular Clouds, Filaments, and Clumps as a Function of the Dense Gas Mass Fraction".ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES 275.1(2024):7.

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来源：新疆天文台

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