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| ALMA observations of massive clouds in the central molecular zone: slim filaments tracing parsec-scale shocks | |
Yang, Kai1,2,3; Lu, Xing4; Zhang, Yichen1; Liu, Xunchuan4; Ginsburg, Adam5; Liu, Hauyu Baobab6,7; Cheng, Yu8; Feng, Siyi9; Liu, Tie4; Zhang, Qizhou10; Mills, Elisabeth A. C.11; Walker, Daniel L.12; Inutsuka, Shu-ichiro13; Battersby, Cara14; Longmore, Steven N.15,16; Tang, Xindi17,18,19,20 ; Kauffmann, Jens21; Gu, Qilao4; Li, Shanghuo2,3; Luo, Qiuyi4; Kruijssen, J. M. Diederik16,22; Pillai, Thushara21; Qiao, Hai-Hua4,23,24; Qiu, Keping2,3; Shen, Zhiqiang4
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| 2025-02-04 | |
| Source Publication | ASTRONOMY & ASTROPHYSICS
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| ISSN | 0004-6361 |
| Volume | 694Pages:A86 |
| Contribution Rank | 17 |
| Abstract | The central molecular zone (CMZ) of our Galaxy exhibits widespread emission from SiO and various complex organic molecules (COMs), yet the exact origin of such emission is uncertain. Here we report the discovery of a unique class of long (>0.5 pc) and narrow (<0.03 pc) filaments in the emission of SiO 5-4 and eight additional molecular lines, including several COMs, in our ALMA 1.3 mm spectral line observations toward two massive molecular clouds in the CMZ, which we name as slim filaments. However, these filaments are not detected in the 1.3 mm continuum at the 5 sigma level. Their line-of-sight velocities are coherent and inconsistent with being outflows. The column densities and relative abundances of the detected molecules are statistically similar to those in protostellar outflows but different from those in dense cores within the same clouds. Turbulent pressure in these filaments dominates over self gravity and leads to hydrostatic inequilibrium, indicating that they are a different class of objects than the dense gas filaments in dynamical equilibrium ubiquitously found in nearby molecular clouds. We argue that these newly detected slim filaments are associated with parsec-scale shocks, likely arising from dynamic interactions between shock waves and molecular clouds. The dissipation of the slim filaments may replenish SiO and COMs in the interstellar medium and lead to their widespread emission in the CMZ. |
| Keyword | stars: formation ISM: clouds ISM: kinematics and dynamics ISM: molecules Galaxy: center |
| DOI | 10.1051/0004-6361/202453191 |
| Indexed By | SCI |
| Language | 英语 |
| WOS Keyword | STAR-FORMATION RATES ; GALACTIC-CENTER ; SIO EMISSION ; ORGANIC-MOLECULES ; VELOCITY SHOCKS ; OUTFLOW ; FRAGMENTATION ; METHANOL ; GAS ; PC |
| Funding Project | National Key Research and Development Program of Chinahttp://dx.doi.org/10.13039/501100012166[2022YFA1603100] ; National Key R&D Program of China[XDB0800300] ; Strategic Priority Research Program of the Chinese Academy of Sciences (CAS)[2024379] ; Shanghai Post-doctoral Excellence Program[12273090] ; Shanghai Post-doctoral Excellence Program[12322305] ; National Natural Science Foundation of China (NSFC)[23ZR1482100] ; Natural Science Foundation of Shanghai[xbzg-zdsys-202212] ; CAS Light of West China Program ; Yangyang Development Fund[111-2112-M- 110-022-MY3] ; Yangyang Development Fund[113-2112-M-110-022-MY3] ; National Science and Technology Council (NSTC) of Taiwan[1813765] ; National Science and Technology Council (NSTC) of Taiwan[2115428] ; National Science and Technology Council (NSTC) of Taiwan[2206509] ; National Science and Technology Council (NSTC) of Taiwan[CAREER 2339670] ; National Science Foundation[714907] ; European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme via the ERC Starting Grant MUSTANG ; Decentralized Autonomous Organization[12373023] ; Decentralized Autonomous Organization[12133008] ; National Science Foundation of China[AAG 2008101] ; National Science Foundation of China[2206511] ; National Science Foundation of China[CAREER 2142300] ; NSF ; Youth Innovation Promotion Association CAS[11903038] ; NSFC[XDB1070301] ; NSFC[XDB1070302] ; Strategic Priority Research Program of the Chinese Academy of Sciences[2016.1.00875] ; ALMA ; Astropy (Astropy Collaboration) |
| WOS Research Area | Astronomy & Astrophysics |
| WOS Subject | Astronomy & Astrophysics |
| WOS ID | WOS:001414753300025 |
| Publisher | EDP SCIENCES S A |
| Funding Organization | National Key Research and Development Program of Chinahttp://dx.doi.org/10.13039/501100012166 ; National Key R&D Program of China ; Strategic Priority Research Program of the Chinese Academy of Sciences (CAS) ; Shanghai Post-doctoral Excellence Program ; National Natural Science Foundation of China (NSFC) ; Natural Science Foundation of Shanghai ; CAS Light of West China Program ; Yangyang Development Fund ; National Science and Technology Council (NSTC) of Taiwan ; National Science Foundation ; European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme via the ERC Starting Grant MUSTANG ; Decentralized Autonomous Organization ; National Science Foundation of China ; NSF ; Youth Innovation Promotion Association CAS ; NSFC ; Strategic Priority Research Program of the Chinese Academy of Sciences ; ALMA ; Astropy (Astropy Collaboration) |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.xao.ac.cn/handle/45760611-7/7440 |
| Collection | 射电天文研究室_恒星形成与演化研究团组 |
| Corresponding Author | Yang, Kai; Lu, Xing; Zhang, Yichen |
| Affiliation | 1.Shanghai Jiao Tong Univ, Sch Phys & Astron, Dept Astron, 800 Dongchuan Rd, Minhang 200240, Shanghai, Peoples R China 2.Nanjing Univ, Sch Astron & Space Sci, 163 Xianlin Ave, Nanjing 210023, Peoples R China 3.Nanjing Univ, Key Lab Modern Astron & Astrophys, Minist Educ, Nanjing 210023, Peoples R China 4.Chinese Acad Sci, Shanghai Astron Observ, 80 Nandan Rd, Shanghai 200030, Peoples R China 5.Univ Florida, Dept Astron, POB 112055, Gainesville, FL 32611 USA 6.Natl Sun Yat Sen Univ, Dept Phys, 70 Lien Hai Rd, Kaohsiung 80424, Taiwan 7.Natl Taiwan Normal Univ, Ctr Astron & Gravitat, Taipei 116, Taiwan 8.Natl Astron Observ Japan, 2-21-1 Osawa, Mitaka, Tokyo 1818588, Japan 9.Xiamen Univ, Dept Astron, Zengcuoan West Rd, Xiamen 361005, Peoples R China 10.Ctr Astrophys Harvard & Smithsonian, 60 Garden St, Cambridge, MA 02138 USA 11.Univ Kansas, Dept Phys & Astron, 1251 Wescoe Hall Dr, Lawrence, KS 66045 USA 12.Univ Manchester, UK ALMA Reg Ctr Node, Jodrell Bank Ctr Astrophys, Manchester M13 9PL, England 13.Nagoya Univ, Grad Sch Sci, Dept Phys, Furo Cho,Chikusa Ku, Nagoya 4648602, Japan 14.Univ Connecticut, Dept Phys, 196A Auditorium Rd, Storrs, CT 06269 USA 15.Liverpool John Moores Univ, Astrophys Res Inst, IC2,Liverpool Sci Pk,146 Brownlow Hill, Liverpool L3 5RF, England 16.Cosm Origins Life COOL Res DAO, Munich, Germany 17.Xinjiang Astron Observ, 150 Sci 1-St, Urumqi 830011, Xinjiang, Peoples R China 18.Univ Chinese Acad Sci, Beijing 100080, Peoples R China 19.Chinese Acad Sci, Key Lab Radio Astron, Urumqi 830011, Peoples R China 20.Xinjiang Key Lab Radio Astrophys, Urumqi 830011, Peoples R China 21.MIT, Haystack Observ, 99 Millstone Rd, Westford, MA 01886 USA 22.Tech Univ Munich, Chair Remote Sensing Technol, Sch Engn & Design, Dept Aerosp & Geodesy, Arcisstr 21, D-80333 Munich, Germany 23.Chinese Acad Sci, Natl Time Serv Ctr, Xian 710600, Shaanxi, Peoples R China 24.Chinese Acad Sci, Key Lab Time Reference & Applicat, Beijing, Peoples R China |
| Recommended Citation GB/T 7714 | Yang, Kai,Lu, Xing,Zhang, Yichen,et al. ALMA observations of massive clouds in the central molecular zone: slim filaments tracing parsec-scale shocks[J]. ASTRONOMY & ASTROPHYSICS,2025,694:A86. |
| APA | Yang, Kai.,Lu, Xing.,Zhang, Yichen.,Liu, Xunchuan.,Ginsburg, Adam.,...&Shen, Zhiqiang.(2025).ALMA observations of massive clouds in the central molecular zone: slim filaments tracing parsec-scale shocks.ASTRONOMY & ASTROPHYSICS,694,A86. |
| MLA | Yang, Kai,et al."ALMA observations of massive clouds in the central molecular zone: slim filaments tracing parsec-scale shocks".ASTRONOMY & ASTROPHYSICS 694(2025):A86. |
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| Yang-2025-ALMA obser（24208KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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