Liu, Tie ORCID: 0000-0002-5286-2564, Li, Pak Shing ORCID: 0000-0001-8077-7095, Juvela, Mika ORCID: 0000-0002-5809-4834, Kim, Kee-Tae ORCID: 0000-0003-2412-7092, Evans, Neal J., II, Di Francesco, James, Liu, Sheng-Yuan ORCID: 0000-0003-4603-7119, Yuan, Jinghua ORCID: 0000-0001-8060-3538, Tatematsu, Ken'ichi, Zhang, Qizhou ORCID: 0000-0003-2384-6589, Ward-Thompson, Derek ORCID: 0000-0003-1140-2761, Fuller, Gary ORCID: 0000-0001-8509-1818, Goldsmith, Paul F., Koch, P. M., Sanhueza, Patricio, Ristorcelli, I., Kang, Sung-ju, Chen, Huei-Ru, Hirano, N., Wu, Yuefang, Sokolov, Vlas ORCID: 0000-0002-5327-4289, Lee, Chang Won, White, Glenn J., Wang, Ke, Eden, David ORCID: 0000-0002-5881-3229, Li, Di ORCID: 0000-0003-3010-7661, Thompson, Mark, Pattle, Kate M., Soam, Archana, Nasedkin, Evert, Kim, Jongsoo, Kim, Gwanjeong, Lai, Shih-Ping, Park, Geumsook ORCID: 0000-0001-8467-3736, Qiu, Keping, Zhang, Chuan-Peng, Alina, Dana ORCID: 0000-0001-5403-356X, Eswaraiah, Chakali, Falgarone, Edith, Fich, Michel, Greaves, Jane, Gu, Q. -L., Kwon, Woojin, Li, Hua-bai, Malinen, Johanna, Montier, Ludovic, Parsons, Harriet, Qin, Sheng-Li, Rawlings, Mark G., Ren, Zhi-Yuan, Tang, Mengyao, Tang, Y. -W., Toth, L. V., Wang, Jiawei, Wouterloot, Jan, Yi, H. -W. and Zhang, H. -W. (2018). A Holistic Perspective on the Dynamics of G035.39-00.33: The Interplay between Gas and Magnetic Fields. Astrophys. J., 859 (2). BRISTOL: IOP PUBLISHING LTD. ISSN 1538-4357

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Abstract

Magnetic 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.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Liu, TieUNSPECIFIEDorcid.org/0000-0002-5286-2564UNSPECIFIED
Li, Pak ShingUNSPECIFIEDorcid.org/0000-0001-8077-7095UNSPECIFIED
Juvela, MikaUNSPECIFIEDorcid.org/0000-0002-5809-4834UNSPECIFIED
Kim, Kee-TaeUNSPECIFIEDorcid.org/0000-0003-2412-7092UNSPECIFIED
Evans, Neal J., IIUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Di Francesco, JamesUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Liu, Sheng-YuanUNSPECIFIEDorcid.org/0000-0003-4603-7119UNSPECIFIED
Yuan, JinghuaUNSPECIFIEDorcid.org/0000-0001-8060-3538UNSPECIFIED
Tatematsu, Ken'ichiUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Zhang, QizhouUNSPECIFIEDorcid.org/0000-0003-2384-6589UNSPECIFIED
Ward-Thompson, DerekUNSPECIFIEDorcid.org/0000-0003-1140-2761UNSPECIFIED
Fuller, GaryUNSPECIFIEDorcid.org/0000-0001-8509-1818UNSPECIFIED
Goldsmith, Paul F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Koch, P. M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Sanhueza, PatricioUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Ristorcelli, I.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kang, Sung-juUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Chen, Huei-RuUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Hirano, N.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Wu, YuefangUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Sokolov, VlasUNSPECIFIEDorcid.org/0000-0002-5327-4289UNSPECIFIED
Lee, Chang WonUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
White, Glenn J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Wang, KeUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Eden, DavidUNSPECIFIEDorcid.org/0000-0002-5881-3229UNSPECIFIED
Li, DiUNSPECIFIEDorcid.org/0000-0003-3010-7661UNSPECIFIED
Thompson, MarkUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Pattle, Kate M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Soam, ArchanaUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Nasedkin, EvertUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kim, JongsooUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kim, GwanjeongUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Lai, Shih-PingUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Park, GeumsookUNSPECIFIEDorcid.org/0000-0001-8467-3736UNSPECIFIED
Qiu, KepingUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Zhang, Chuan-PengUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Alina, DanaUNSPECIFIEDorcid.org/0000-0001-5403-356XUNSPECIFIED
Eswaraiah, ChakaliUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Falgarone, EdithUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Fich, MichelUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Greaves, JaneUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Gu, Q. -L.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kwon, WoojinUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Li, Hua-baiUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Malinen, JohannaUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Montier, LudovicUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Parsons, HarrietUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Qin, Sheng-LiUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Rawlings, Mark G.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Ren, Zhi-YuanUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Tang, MengyaoUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Tang, Y. -W.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Toth, L. V.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Wang, JiaweiUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Wouterloot, JanUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Yi, H. -W.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Zhang, H. -W.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
URN: urn:nbn:de:hbz:38-183235
DOI: 10.3847/1538-4357/aac025
Journal or Publication Title: Astrophys. J.
Volume: 859
Number: 2
Date: 2018
Publisher: IOP PUBLISHING LTD
Place of Publication: BRISTOL
ISSN: 1538-4357
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
CLUMP IDENTIFICATION; MOLECULAR CLOUDS; DUST EMISSION; FRAGMENTATION; SCUBA-2; POLARIZATION; SIMULATIONS; KINEMATICS; TURBULENT; ACCRETIONMultiple languages
Astronomy & AstrophysicsMultiple languages
Refereed: Yes
URI: http://kups.ub.uni-koeln.de/id/eprint/18323

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