A Holistic Perspective on the Dynamics of G035.39-00.33: The Interplay between Gas and Magnetic Fields
Liu, Tie1,2; Li, Pak Shing3; Juvela, Mika4; Kim, Kee-Tae1; Evans, Neal J., II1,5; Di Francesco, James6,7; Liu, Sheng-Yuan8; Yuan, Jinghua9; Tatematsu, Ken'ichi10; Zhang, Qizhou11; Ward-Thompson, Derek12; Fuller, Gary13; Goldsmith, Paul F.14; Koch, P. M.8; Sanhueza, Patricio10; Ristorcelli, I.15; Kang, Sung-ju1; Chen, Huei-Ru17; Hirano, N.8; Wu, Yuefang18; Sokolov, Vlas19; Lee, Chang Won1,20; White, Glenn J.21,22; Wang, Ke23; Eden, David24; Li, Di25; Thompson, Mark26; Pattle, Kate M.17; Soam, Archana1; Nasedkin, Evert27; Kim, Jongsoo1; Kim, Gwanjeong; Lai, Shih-Ping17; Park, Geumsook1; Qiu, Keping28; Zhang, Chuan-Peng9; Alina, Dana29; Eswaraiah, Chakali17; Falgarone, Edith30; Fich, Michel27; Greaves, Jane31; Gu, Q. -L.32; Kwon, Woojin1; Li, Hua-bai32; Malinen, Johanna33; Montier, Ludovic; Parsons, Harriet2; Qin, Sheng-Li34,35; Rawlings, Mark G.2; Ren, Zhi-Yuan9; Tang, Mengyao34,35; Tang, Y. -W.; Toth, L. V.36; Wang, Jiawei17; Wouterloot, Jan2; Yi, H. -W.37; Zhang, H. -W.18
Corresponding AuthorLiu, Tie(
AbstractMagnetic field plays a crucial role in shaping molecular clouds and regulating star formation, yet the complete information on the magnetic field is not well constrained owing to the limitations in observations. We study the magnetic field in the massive infrared dark cloud G035.39-00.33 from dust continuum polarization observations at 850 mu m with SCUBA-2/POL-2 at JCMT for the first time. The magnetic field tends to be perpendicular to the densest part of the main filament (F-M), whereas it has a less defined relative orientation in the rest of the structure, where it tends to be parallel to some diffuse regions. A mean plane-of-the-sky magnetic field strength of similar to 50 mu G for F-M is obtained using the Davis-Chandrasekhar-Fermi method. Based on (CO)-C-13 (1-0) line observations, we suggest a formation scenario of F-M due to large-scale (similar to 10 pc) cloud-cloud collision. Using additional NH3 line data, we estimate that F-M will be gravitationally unstable if it is only supported by thermal pressure and turbulence. The northern part of F-M, however, can be stabilized by a modest additional support from the local magnetic field. The middle and southern parts of F-M are likely unstable even if the magnetic field support is taken into account. We claim that the clumps in F-M may be supported by turbulence and magnetic fields against gravitational collapse. Finally, we identified for the first time a massive (similar to 200 M-circle dot, collapsing starless clump candidate, "c8," in G035.39-00.33. The magnetic field surrounding "c8" is likely pinched, hinting at an accretion flow along the filament.
KeywordISM: clouds ISM: magnetic fields stars: formation
Indexed BySCI
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000434264500005
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Document Type期刊论文
Corresponding AuthorLiu, Tie
Affiliation1.Korea Astron & Space Sci Inst, 776 Daedeokdaero, Daejeon 34055, South Korea
2.East Asian Observ, 660 N Aohoku Pl, Hilo, HI 96720 USA
3.Univ Calif Berkeley, Astron Dept, Berkeley, CA 94720 USA
4.Univ Helsinki, Dept Phys, POB 64, FI-00014 Helsinki, Finland
5.Univ Texas Austin, Dept Astron, 2515 Speedway,Stop C1400, Austin, TX 78712 USA
6.NRC Herzberg Astron & Astrophys, 5071 West Saanich Rd, Victoria, BC V9E 2E7, Canada
7.Univ Victoria, Dept Phys & Astron, Victoria, BC V8P 5C2, Canada
8.Acad Sinica, Inst Astron & Astrophys, NTU, 11F Astron Math Bldg,1 Sec 4,Roosevelt Rd, Taipei 10617, Taiwan
9.Chinese Acad Sci, Natl Astron Observat, Beijing 100012, Peoples R China
10.Natl Inst Nat Sci, Natl Astron Observ Japan, 2-21-1 Osawa, Mitaka, Tokyo 1818588, Japan
11.Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA
12.Univ Cent Lancashire, Jeremiah Horrocks Inst Math Phys & Astron, Preston PR1 2HE, Lancs, England
13.Univ Manchester, Sch Phys & Astron, Jodrell Bank Ctr Astrophys, UK ALMA Reg Ctr Node, Oxford Rd, Manchester M13 9PL, Lancs, England
14.CALTECH, Jet Prop Lab, 4800 Oak Grove Dr, Pasadena, CA 91109 USA
15.Univ Toulouse, CNRS, UPS, CNES,IRAP, Toulouse, France
16.Natl Tsing Hua Univ, Inst Astron, Hsinchu, Taiwan
17.Natl Tsing Hua Univ, Dept Phys, Hsinchu, Taiwan
18.Peking Univ, Dept Astron, Beijing 100871, Peoples R China
19.Max Planck Inst Extraterrestrial Phys, Gissenbachstr 1, D-85748 Garching, Germany
20.Korea Univ Sci & Technol, 217 Gajeong Ro, Daejeon 34113, South Korea
21.Open Univ, Dept Phys & Astron, Walton Hall, Milton Keynes MK7 6AA, Bucks, England
22.Chilton, RAL Space, STFC Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England
23.European Southern Observ, Karl Schwarzschild Str 2, D-85748 Garching, Germany
24.Liverpool John Moores Univ, Astrophys Res Inst, IC2,Liverpool Sci Pk,146 Brownlow Hill, Liverpool L3 5RF, Merseyside, England
25.Chinese Acad Sci, Key Lab Radio Astron, Nanjing 210008, Jiangsu, Peoples R China
26.Univ Hertfordshire, Sch Phys Astron & Math, Ctr Astrophys Res, Coll Lane, Hatfield AL10 9AB, Herts, England
27.Univ Waterloo, Dept Phys & Astron, Waterloo, ON N2L 3G1, Canada
28.Nanjing Univ, Sch Astron & Space Sci, Nanjing 210023, Jiangsu, Peoples R China
29.Nazarbayev Univ, Sch Sci & Technol, Dept Phys, Astana 010000, Kazakhstan
30.Univ Paris 06, Sorbonne Univ, PSL Res Univ, LERMA,Observat Paris,CNRS,UPMC,Ecole Normale Supe, F-75005 Paris, France
31.Cardiff Univ, Sch Phys & Astron, Cardiff CF24 3AA, S Glam, Wales
32.Chinese Univ Hong Kong, Dept Phys, Hong Kong, Hong Kong, Peoples R China
33.Univ Cologne, Inst Phys 1, Zulpicher Str 77, D-50937 Cologne, Germany
34.Yunnan Univ, Dept Astron, Kunming 650091, Yunnan, Peoples R China
35.Key Lab Astroparticle Phys, Kunming 650091, Yunnan, Peoples R China
36.Eotvos Lorand Univ, Dept Astron, Pazmany Peter Setany 1-A, H-1117 Budapest, Hungary
37.Kyung Hee Univ, Sch Space Res, Yongin 17104, Gyeonggi Do, South Korea
Recommended Citation
GB/T 7714
Liu, Tie,Li, Pak Shing,Juvela, Mika,et al. A Holistic Perspective on the Dynamics of G035.39-00.33: The Interplay between Gas and Magnetic Fields[J]. ASTROPHYSICAL JOURNAL,2018,859(2):20.
APA Liu, Tie.,Li, Pak Shing.,Juvela, Mika.,Kim, Kee-Tae.,Evans, Neal J., II.,...&Zhang, H. -W..(2018).A Holistic Perspective on the Dynamics of G035.39-00.33: The Interplay between Gas and Magnetic Fields.ASTROPHYSICAL JOURNAL,859(2),20.
MLA Liu, Tie,et al."A Holistic Perspective on the Dynamics of G035.39-00.33: The Interplay between Gas and Magnetic Fields".ASTROPHYSICAL JOURNAL 859.2(2018):20.
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