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Magnetic Fields in the Central Molecular Zone Influenced by Feedback and Weakly Correlated with Star Formation

文献类型：期刊论文

作者Lu, Xing1; Liu, Junhao9,10; Pillai, Thushara10; Zhang, Qizhou1; Liu, Tie1,3; Gu, Qilao1; Hasegawa, Tetsuo10; Li, Pak Shing1; Tang, Xindi1,2; Hatchfield, H. Perry1,2
刊名ASTROPHYSICAL JOURNAL
出版日期2024-02-01
卷号962期号:1页码:39
ISSN号0004-637X
DOI10.3847/1538-4357/ad1395
产权排序7
英文摘要Magnetic fields of molecular clouds in the central molecular zone (CMZ) have been relatively under-observed at sub-parsec resolution. Here, we report JCMT/POL2 observations of polarized dust emission in the CMZ, which reveal magnetic field structures in dense gas at similar to 0.5 pc resolution. The 11 molecular clouds in our sample include two in the western part of the CMZ (Sgr C and a farside cloud candidate), four around the Galactic longitude 0 (the 50 km s-1 cloud, CO 0.02-0.02, the Stone, and the Sticks and Straw among the Three Little Pigs), and five along the Dust Ridge (G0.253+0.016, clouds b, c, d, and e/f), for each of which we estimate the magnetic field strength using the angular dispersion function method. The morphologies of magnetic fields in the clouds suggest potential imprints of feedback from expanding H ii regions and young massive star clusters. A moderate correlation between the total viral parameter versus the star formation rate (SFR) and the dense gas fraction of the clouds is found. A weak correlation between the mass-to-flux ratio and the SFR, and a weak anticorrelation between the magnetic field and the dense gas fraction are also found. Comparisons between magnetic fields and other dynamic components in clouds suggest a more dominant role of self-gravity and turbulence in determining the dynamical states of the clouds and affecting star formation at the studied scales.
WOS关键词JCMT BISTRO SURVEY ; H II REGIONS ; GALACTIC-CENTER ; FORMATION RATES ; ALMA OBSERVATIONS ; CLOUD EVOLUTION ; MASSIVE CLOUDS ; POLARIZATION ; GAS ; DYNAMICS
资助项目National Key R&D Program of China[2022YFA1603101] ; Natural Science Foundation of Shanghai[23ZR1482100] ; National Natural Science Foundation of China (NSFC)[12273090] ; National Natural Science Foundation of China (NSFC)[12322305] ; National Natural Science Foundation of China (NSFC)[12073061] ; National Natural Science Foundation of China (NSFC)[12122307] ; Chinese Academy of Sciences (CAS) Light of West China Program[xbzg-zdsys-202212] ; KAKENHI of JSPS[JP23H01221] ; National Science Foundation[2206512] ; Chinese Academy of Sciences[114231KYSB20200009] ; Chinese Academy of Sciences[XDB09000000] ; Shanghai Pujiang Program[20PJ1415500] ; Science and Technology Facilities Council of the United Kingdom
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:001156880000001
出版者IOP Publishing Ltd
资助机构National Key R&D Program of China ; Natural Science Foundation of Shanghai ; National Natural Science Foundation of China (NSFC) ; Chinese Academy of Sciences (CAS) Light of West China Program ; KAKENHI of JSPS ; National Science Foundation ; Chinese Academy of Sciences ; Shanghai Pujiang Program ; Science and Technology Facilities Council of the United Kingdom
源URL[http://ir.xao.ac.cn/handle/45760611-7/5772]  
专题恒星形成与演化研究团组
通讯作者Lu, Xing; Liu, Junhao
作者单位1.Chinese Acad Sci, Shanghai Astron Observ, 80 Nandan Rd, Shanghai 200030, Peoples R China
2.Univ Chinese Acad Sci, Sch Astron & Space Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Key Lab Radio Astron & Technol, A20 Datun Rd, Beijing 100101, Peoples R China
4.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China
5.Ctr Astrophys, Harvard & Smithsonian, 60 Garden St, Cambridge, MA 02138 USA
6.MIT, Haystack Observ, 99 Millstone Rd, Westford, MA 01886 USA
7.CALTECH, Jet Prop Lab, 4800 Oak Grove Dr, Pasadena, CA 91109 USA
8.Univ Connecticut, Dept Phys, 196A Auditorium Rd,Unit 3046, Storrs, CT 06269 USA
9.East Asian Observ, 660 N Aohoku Pl,Univ Pk, Hilo, HI 96720 USA
10.Natl Astron Observ Japan, 2-21-1 Osawa,Mitaka Ku, Tokyo 1818588, Japan
推荐引用方式
GB/T 7714		 Lu, Xing,Liu, Junhao,Pillai, Thushara,et al. Magnetic Fields in the Central Molecular Zone Influenced by Feedback and Weakly Correlated with Star Formation[J]. ASTROPHYSICAL JOURNAL,2024,962(1):39.
APA Lu, Xing.,Liu, Junhao.,Pillai, Thushara.,Zhang, Qizhou.,Liu, Tie.,...&Shen, Zhiqiang.(2024).Magnetic Fields in the Central Molecular Zone Influenced by Feedback and Weakly Correlated with Star Formation.ASTROPHYSICAL JOURNAL,962(1),39.
MLA Lu, Xing,et al."Magnetic Fields in the Central Molecular Zone Influenced by Feedback and Weakly Correlated with Star Formation".ASTROPHYSICAL JOURNAL 962.1(2024):39.

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