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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
earth and planetary sciences
Dust polarized emission observations of NGC 6334: BISTRO reveals the details of the complex but organized magnetic field structure of the high-mass star-forming hub-filament network
Astronomy and Astrophysics, Volume 647, Article A78, Year 2021
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Description
Context. Molecular filaments and hubs have received special attention recently thanks to new studies showing their key role in star formation. While the (column) density and velocity structures of both filaments and hubs have been carefully studied, their magnetic field (B-field) properties have yet to be characterized. Consequently, the role of B-fields in the formation and evolution of hub-filament systems is not well constrained. Aims. We aim to understand the role of the B-field and its interplay with turbulence and gravity in the dynamical evolution of the NGC 6334 filament network that harbours cluster-forming hubs and high-mass star formation. Methods. We present new observations of the dust polarized emission at 850 μm toward the 2 pc × 10 pc map of NGC 6334 at a spatial resolution of 0.09 pc obtained with the James Clerk Maxwell Telescope (JCMT) as part of the B-field In STar-forming Region Observations (BISTRO) survey. We study the distribution and dispersion of the polarized intensity (PI), the polarization fraction (PF), and the plane-of-The-sky B-field angle (χB_POS) toward the whole region, along the 10 pc-long ridge and along the sub-filaments connected to the ridge and the hubs. We derived the power spectra of the intensity and χBPOS along the ridge crest and compared them with the results obtained from simulated filaments. Results. The observations span 3 orders of magnitude in Stokes I and PI and 2 orders of magnitude in PF (from 0.2 to 20%). A large scatter in PI and PF is observed for a given value of I. Our analyses show a complex B-field structure when observed over the whole region ( 10 pc); however, at smaller scales (1 pc), χBPOS varies coherently along the crests of the filament network. The observed power spectrum of χBPOS can be well represented with a power law function with a slope of-1.33 ± 0.23, which is 20% shallower than that of I. We find that this result is compatible with the properties of simulated filaments and may indicate the physical processes at play in the formation and evolution of star-forming filaments. Along the sub-filaments, χBPOS rotates frombeing mostly perpendicular or randomly oriented with respect to the crests to mostly parallel as the sub-filaments merge with the ridge and hubs. This variation of the B-field structure along the sub-filaments may be tracing local velocity flows of infalling matter in the ridge and hubs. Our analysis also suggests a variation in the energy balance along the crests of these sub-filaments, from magnetically critical or supercritical at their far ends to magnetically subcritical near the ridge and hubs. We also detect an increase in PF toward the high-column density (NH2 â 1023 cm-2) star cluster-forming hubs. These latter large PF values may be explained by the increase in grain alignment efficiency due to stellar radiation from the newborn stars, combined with an ordered B-field structure. Conclusions. These observational results reveal for the first time the characteristics of the small-scale (down to 0.1 pc) B-field structure of a 10 pc-long hub-filament system. Our analyses show variations in the polarization properties along the sub-filaments that may be tracing the evolution of their physical properties during their interaction with the ridge and hubs. We also detect an impact of feedback from young high-mass stars on the local B-field structure and the polarization properties, which could put constraints on possible models for dust grain alignment and provide important hints as to the interplay between the star formation activity and interstellar B-fields. © ESO 2021.
Authors & Co-Authors
Arzoumanian, Doris
Portugal, Porto
Instituto de Astrofísica e Ciências do Espaço
Japan, Nagoya
Nagoya University
Furuya, Ray S.
Japan, Tokushima
Tokushima University
Hasegawa, Tetsuo
Japan, Mitaka
National Institutes of Natural Sciences - National Astronomical Observatory of Japan
Tahani, Mehrnoosh
Canada, Ottawa
National Research Council Canada
Sadavoy, Sarah I.
Canada, Kingston
Queen’s University
Hull, Charles L.H.
Japan, Mitaka
National Institutes of Natural Sciences - National Astronomical Observatory of Japan
Chile, Santiago
Atacama Large Millimeter-submillimeter Array
Johnstone, Doug I.
Canada, Ottawa
National Research Council Canada
Canada, Victoria
University of Victoria
Koch, Patrick Michel
Taiwan, Taipei
Academia Sinica, Institute of Astronomy and Astrophysics
Inutsuka, Shu Ichiro
Japan, Nagoya
Nagoya University
Doi, Yasuo
Japan, Tokyo
The University of Tokyo
Hoang, Thiem C.
South Korea, Daejeon
Korea Astronomy and Space Science Institute
South Korea, Daejeon
University of Science and Technology Ust
Onaka, Takashi
Japan, Ome
Meisei University
Japan, Tokyo
The University of Tokyo
Iwasaki, Kazunari
Japan, Mitaka
National Institutes of Natural Sciences - National Astronomical Observatory of Japan
Shimajiri, Yoshito
Japan, Mitaka
National Institutes of Natural Sciences - National Astronomical Observatory of Japan
Inoue, Tsuyohshi
Japan, Nagoya
Nagoya University
Peretto, Nicolas
United Kingdom, Cardiff
Cardiff University
Ándré, Philippe J.
France, Gif-sur-yvette
Commissariat a L'energie Atomique et Aux Energies Alternatives
Bastien, Pierre
Canada, Montreal
University of Montreal
Berry, David S.
United States, Hilo
East Asian Observatory
Chen, Hueiru Ru Vivien
Taiwan, Taipei
Academia Sinica, Institute of Astronomy and Astrophysics
Taiwan, Hsinchu
National Tsing Hua University
Di Francesco, James D.
Canada, Ottawa
National Research Council Canada
Canada, Victoria
University of Victoria
Eswaraiah, Chakali
China, Beijing
Chinese Academy of Sciences
Fanciullo, Lapo
Taiwan, Taipei
Academia Sinica, Institute of Astronomy and Astrophysics
Fissel, Laura M.
Canada, Kingston
Queen’s University
Hwang, Jihye
South Korea, Daejeon
Korea Astronomy and Space Science Institute
South Korea, Daejeon
University of Science and Technology Ust
Kang, Jihyun
South Korea, Daejeon
Korea Astronomy and Space Science Institute
Kim, Gwanjeong
Japan, Minato
National Institutes of Natural Sciences
Kim, Kee-tae
South Korea, Daejeon
Korea Astronomy and Space Science Institute
South Korea, Daejeon
University of Science and Technology Ust
Kirchschlager, Florian
United Kingdom, London
University College London
Kwon, Woojin
South Korea, Seoul
Seoul National University
Lee, Chang-won
South Korea, Daejeon
Korea Astronomy and Space Science Institute
South Korea, Daejeon
University of Science and Technology Ust
Liu, Hongli
China, Kunming
Yunnan University
Chile, Biobio
Universidad de Concepcion
Lyo, A. Ran
South Korea, Daejeon
Korea Astronomy and Space Science Institute
Pattle, Kate M.
Ireland, Galway
University of Galway
Soam, Archana
United States, Moffett Field
Nasa Ames Research Center
Tang, Xindi
China, Beijing
Chinese Academy of Sciences
Whitworth, Anthony Peter
United Kingdom, Cardiff
Cardiff University
Ching, Taochung
China, Beijing
Chinese Academy of Sciences
Coude, Simon
United States, Moffett Field
Nasa Ames Research Center
Wang, Jia Wei
Taiwan, Taipei
Academia Sinica, Institute of Astronomy and Astrophysics
Ward-Thompson, Derek
United Kingdom, Preston
University of Central Lancashire
Lai, Shihping
Taiwan, Taipei
Academia Sinica, Institute of Astronomy and Astrophysics
Taiwan, Hsinchu
National Tsing Hua University
Qiu, Keping
China, Nanjing
Nanjing University
China, Beijing
Ministry of Education of the People's Republic of China
Bourke, Tyler L.
United Kingdom, Macclesfield
Ska Organisation, uk
United Kingdom, Manchester
The University of Manchester
Byun, Do-young
South Korea, Daejeon
Korea Astronomy and Space Science Institute
South Korea, Daejeon
University of Science and Technology Ust
Chen, Michael Chun Yuan
Canada, Victoria
University of Victoria
Chen, Zhiwei
China, Beijing
Chinese Academy of Sciences
Chen, Wenping
Taiwan, Taoyuan
National Central University
Cho, Jungyeon
South Korea, Daejeon
Chungnam National University
Choi, Yunhee
South Korea, Daejeon
Korea Astronomy and Space Science Institute
Choi, Minho
South Korea, Daejeon
Korea Astronomy and Space Science Institute
Chrysostomou, Antonio C.
United Kingdom, Macclesfield
Ska Organisation, uk
United Kingdom, Hatfield
University of Hertfordshire
Chung, Eun Jung
South Korea, Daejeon
Chungnam National University
Dai, Sophia Yu
China, Beijing
Chinese Academy of Sciences
Diep, Pham Ngoc
Viet Nam, Hanoi
Vietnam Academy of Science and Technology
Duan, Haoyuan
Taiwan, Hsinchu
National Tsing Hua University
Duan, Yan
China, Beijing
Chinese Academy of Sciences
Eden, David J.
United Kingdom, Liverpool
Liverpool John Moores University
Fiege, Jason D.
Canada, Winnipeg
University of Manitoba
Franzmann, Erica
Canada, Winnipeg
University of Manitoba
Friberg, Per
United States, Hilo
East Asian Observatory
Fuller, Gary A.
United Kingdom, Manchester
The University of Manchester
Gledhill, Tim M.
United Kingdom, Hatfield
University of Hertfordshire
Graves, Sarah F.
United States, Hilo
East Asian Observatory
Greaves, Jane S.
United Kingdom, Cardiff
Cardiff University
Griffin, Matthew J.
United Kingdom, Cardiff
Cardiff University
Gu, Qilao
Hong Kong, Hong Kong
Chinese University of Hong Kong
Han, Ilseung
South Korea, Daejeon
Korea Astronomy and Space Science Institute
South Korea, Daejeon
University of Science and Technology Ust
Hatchell, Jennifer
United Kingdom, Exeter
University of Exeter
Hayashi, Saeko S.
Japan, Mitaka
National Institutes of Natural Sciences - National Astronomical Observatory of Japan
Houde, Martin
Canada, London
Western University
Jeong, Il-gyo
South Korea, Daejeon
Korea Astronomy and Space Science Institute
Kang, Miju
South Korea, Daejeon
Korea Astronomy and Space Science Institute
Kang, Sung-ju
South Korea, Daejeon
Korea Astronomy and Space Science Institute
Kataoka, Akimasa
Japan, Mitaka
National Institutes of Natural Sciences - National Astronomical Observatory of Japan
Kawabata, Koji S.
Japan, Higashihiroshima
Hiroshima University
Kemper, F.
Taiwan, Taipei
Academia Sinica, Institute of Astronomy and Astrophysics
Germany, Garching Bei Munchen
European Southern Observatory
Kim, Miryang
South Korea, Daejeon
Korea Astronomy and Space Science Institute
Kim, K. H.
South Korea, Daejeon
Korea Astronomy and Space Science Institute
Kim, Jongsoo
South Korea, Daejeon
Korea Astronomy and Space Science Institute
South Korea, Daejeon
University of Science and Technology Ust
Kim, Shinyoung
South Korea, Daejeon
Korea Astronomy and Space Science Institute
South Korea, Daejeon
University of Science and Technology Ust
Kirk, Jason M.
United Kingdom, Preston
University of Central Lancashire
Kobayashi, Masato I.N.
Japan, Sendai
Tohoku University
Könyves, Vera
United Kingdom, Preston
University of Central Lancashire
Kusune, Takayoshi
Japan, Mitaka
National Institutes of Natural Sciences - National Astronomical Observatory of Japan
Kwon, Jungmi
Japan, Tokyo
The University of Tokyo
Lacaille, Kevin M.
Canada, Hamilton
Mcmaster University
Canada, Halifax
Dalhousie University
Law, Chiyan
Hong Kong, Hong Kong
Chinese University of Hong Kong
Sweden, Gothenburg
Chalmers University of Technology
Lee, Chinfei
Taiwan, Taipei
Academia Sinica, Institute of Astronomy and Astrophysics
Lee, Yong-hee
United States, Hilo
East Asian Observatory
South Korea, Seoul
Kyung Hee University
Lee, Sang-sung
South Korea, Daejeon
Korea Astronomy and Space Science Institute
South Korea, Daejeon
University of Science and Technology Ust
Lee, Hyung-mok
South Korea, Daejeon
Chungnam National University
Lee, Jeong Eun
South Korea, Seoul
Kyung Hee University
Li, Huabai
Hong Kong, Hong Kong
Chinese University of Hong Kong
Li, D. H.
China, Beijing
Chinese Academy of Sciences
Li, Dalei
China, Beijing
Chinese Academy of Sciences
Liu, Junhao
China, Nanjing
Nanjing University
China, Beijing
Ministry of Education of the People's Republic of China
Liu, Tie
China, Beijing
Chinese Academy of Sciences
Liu, Shengyuan
Taiwan, Taipei
Academia Sinica, Institute of Astronomy and Astrophysics
Lu, Xing
Japan, Mitaka
National Institutes of Natural Sciences - National Astronomical Observatory of Japan
Mairs, Steve
United States, Hilo
East Asian Observatory
Matsumura, Masafumi
Japan, Takamatsu
Kagawa University
Matthews, Brenda C.
Canada, Ottawa
National Research Council Canada
Canada, Victoria
University of Victoria
Schieven, Gerald M.
Canada, Ottawa
National Research Council Canada
Nagata, Tetsuya
Japan, Kyoto
Kyoto University
Nakamura, Fumitaka
Japan, Mitaka
National Institutes of Natural Sciences - National Astronomical Observatory of Japan
Japan, Hayama
The Graduate University for Advanced Studies
Nakanishi, Hiroyuki
Japan, Kagoshima
Kagoshima University
Ohashi, Nagayoshi
Japan, Mitaka
National Institutes of Natural Sciences - National Astronomical Observatory of Japan
Park, G.
South Korea, Daejeon
Korea Astronomy and Space Science Institute
Parsons, Harriet A.L.
United States, Hilo
East Asian Observatory
Pyo, Tae-soo
Japan, Mitaka
National Institutes of Natural Sciences - National Astronomical Observatory of Japan
Japan, Hayama
The Graduate University for Advanced Studies
Qian, Lei
China, Beijing
Chinese Academy of Sciences
Rao, Ramprasad
Taiwan, Taipei
Academia Sinica, Institute of Astronomy and Astrophysics
Rawlings, Jonathan M.C.
United Kingdom, London
University College London
Rawlings, Mark G.
United States, Hilo
East Asian Observatory
Rigby, Andrew J.
United Kingdom, Cardiff
Cardiff University
Scaife, Anna M.M.
United Kingdom, Manchester
The University of Manchester
Seta, Masumichi
Japan, Nishinomiya
Kwansei Gakuin University
Shinnaga, Hiroko
Japan, Kagoshima
Kagoshima University
Tamura, Motohide
Japan, Mitaka
National Institutes of Natural Sciences - National Astronomical Observatory of Japan
Japan, Tokyo
The University of Tokyo
Japan, Mitaka
National Institutes of Natural Sciences - Astrobiology Center
Tang, Yawen
Taiwan, Taipei
Academia Sinica, Institute of Astronomy and Astrophysics
Tomisaka, Kohji
Japan, Mitaka
National Institutes of Natural Sciences - National Astronomical Observatory of Japan
Japan, Hayama
The Graduate University for Advanced Studies
Tram, Le Ngoc
Viet Nam, Hanoi
Vietnam Academy of Science and Technology
Viti, Serena
United Kingdom, London
University College London
Wang, Hongchi
China, Beijing
Chinese Academy of Sciences
Xie, Jinjin
China, Beijing
Chinese Academy of Sciences
Yen, Hsiwei
Taiwan, Taipei
Academia Sinica, Institute of Astronomy and Astrophysics
Yuan, Jinghua
China, Beijing
Chinese Academy of Sciences
Yun, Hyeong-sik
South Korea, Seoul
Kyung Hee University
Zenko, Tetsuya
Japan, Kyoto
Kyoto University
Zhang, Guoyin
China, Beijing
Chinese Academy of Sciences
Zhang, Chuanpeng
China, Beijing
Chinese Academy of Sciences
Zhou, Jianjun
China, Beijing
Chinese Academy of Sciences
Zhu, Lei
China, Beijing
Chinese Academy of Sciences
de Looze, Ilse
United Kingdom, London
University College London
Dowell, Charles Darren
United States, Pasadena
Jet Propulsion Laboratory
Eyres, Stewart
United Kingdom, Pontypridd
University of South Wales
Friesen, Rachel K.
United States, Charlottesville
National Radio Astronomy Observatory
Robitaille, Jean Franćois
France, Saint Martin D'heres
Institut de Planétologie et D’astrophysique de Grenoble Ipag
Statistics
Citations: 39
Authors: 139
Affiliations: 61
Identifiers
Doi:
10.1051/0004-6361/202038624
ISSN:
00046361
Research Areas
Cancer
Environmental
Study Design
Cross Sectional Study
Study Approach
Quantitative