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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
earth and planetary sciences
Magnetic Fields toward Ophiuchus-B Derived from SCUBA-2 Polarization Measurements
Astrophysical Journal, Volume 861, No. 1, Article 65, Year 2018
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Description
We present the results of dust emission polarization measurements of Ophiuchus-B (Oph-B) carried out using the Submillimetre Common-User Bolometer Array 2 (SCUBA-2) camera with its associated polarimeter (POL-2) on the James Clerk Maxwell Telescope in Hawaii. This work is part of the B-fields in Star-forming Region Observations survey initiated to understand the role of magnetic fields in star formation for nearby star-forming molecular clouds. We present a first look at the geometry and strength of magnetic fields in Oph-B. The field geometry is traced over ∼0.2 pc, with clear detection of both of the sub-clumps of Oph-B. The field pattern appears significantly disordered in sub-clump Oph-B1. The field geometry in Oph-B2 is more ordered, with a tendency to be along the major axis of the clump, parallel to the filamentary structure within which it lies. The degree of polarization decreases systematically toward the dense core material in the two sub-clumps. The field lines in the lower density material along the periphery are smoothly joined to the large-scale magnetic fields probed by NIR polarization observations. We estimated a magnetic field strength of 630 ± 410 μG in the Oph-B2 sub-clump using a Davis-Chandrasekhar-Fermi analysis. With this magnetic field strength, we find a mass-to-flux ratio λ = 1.6 ± 1.1, which suggests that the Oph-B2 clump is slightly magnetically supercritical. © 2018. The American Astronomical Society. All rights reserved.
Authors & Co-Authors
Soam, Archana
South Korea, Daejeon
Korea Astronomy and Space Science Institute
Pattle, Kate M.
United Kingdom, Preston
University of Central Lancashire
Japan, Minato
National Institutes of Natural Sciences
Taiwan, Hsinchu
National Tsing Hua University
Ward-Thompson, Derek
United Kingdom, Preston
University of Central Lancashire
Lee, Chang-won
South Korea, Daejeon
Korea Astronomy and Space Science Institute
South Korea, Daejeon
University of Science and Technology Ust
Sadavoy, Sarah I.
United States, Cambridge
Harvard-smithsonian Center for Astrophysics
Koch, Patrick Michel
Taiwan, Nankang
Academia Sinica Taiwan
Kim, Gwanjeong
South Korea, Daejeon
Korea Astronomy and Space Science Institute
South Korea, Daejeon
University of Science and Technology Ust
Japan, Mitaka
National Institutes of Natural Sciences - National Astronomical Observatory of Japan
Kwon, Jungmi
Japan, Chofu
Japan Aerospace Exploration Agency
Kwon, Woojin
South Korea, Daejeon
Korea Astronomy and Space Science Institute
South Korea, Daejeon
University of Science and Technology Ust
Arzoumanian, Doris
Japan, Nagoya
Nagoya University
Berry, David S.
United States, Hilo
East Asian Observatory
Hoang, Thiem C.
South Korea, Daejeon
Korea Astronomy and Space Science Institute
South Korea, Daejeon
University of Science and Technology Ust
Tamura, Motohide
Japan, Minato
National Institutes of Natural Sciences
Japan, Tokyo
The University of Tokyo
Japan, Mitaka
National Institutes of Natural Sciences - Astrobiology Center
Lee, Sang-sung
South Korea, Daejeon
Korea Astronomy and Space Science Institute
South Korea, Daejeon
University of Science and Technology Ust
Liu, Tie
South Korea, Daejeon
Korea Astronomy and Space Science Institute
United States, Hilo
East Asian Observatory
Kim, Kee-tae
South Korea, Daejeon
Korea Astronomy and Space Science Institute
Johnstone, Doug I.
Canada, Ottawa
National Research Council Canada
Canada, Victoria
University of Victoria
Nakamura, Fumitaka
Japan, Mitaka
National Institutes of Natural Sciences - National Astronomical Observatory of Japan
Japan, Hayama
The Graduate University for Advanced Studies
Lyo, A. Ran
South Korea, Daejeon
Korea Astronomy and Space Science Institute
Onaka, Takashi
Japan, Tokyo
The University of Tokyo
Kim, Jongsoo
South Korea, Daejeon
Korea Astronomy and Space Science Institute
South Korea, Daejeon
University of Science and Technology Ust
Furuya, Ray S.
Japan, Tokushima
Tokushima University
Hasegawa, Tetsuo
Japan, Minato
National Institutes of Natural Sciences
Lai, Shihping
Taiwan, Hsinchu
National Tsing Hua University
Taiwan, Nankang
Academia Sinica Taiwan
Bastien, Pierre
Canada, Montreal
University of Montreal
Chung, Eun Jung
South Korea, Daejeon
Korea Astronomy and Space Science Institute
Kim, Shinyoung
South Korea, Daejeon
Korea Astronomy and Space Science Institute
South Korea, Daejeon
University of Science and Technology Ust
Parsons, Harriet A.L.
United States, Hilo
East Asian Observatory
Rawlings, Mark G.
United States, Hilo
East Asian Observatory
Mairs, Steve
United States, Hilo
East Asian Observatory
Graves, Sarah F.
United States, Hilo
East Asian Observatory
Robitaille, Jean Franćois
United Kingdom, Manchester
The University of Manchester
Liu, Hongli
Hong Kong, Hong Kong
Chinese University of Hong Kong
Whitworth, Anthony Peter
United Kingdom, Cardiff
Cardiff University
Eswaraiah, Chakali
Taiwan, Hsinchu
National Tsing Hua University
Rao, Ramprasad
Taiwan, Nankang
Academia Sinica Taiwan
Houde, Martin
Canada, London
Western University
Kang, Jihyun
South Korea, Daejeon
Korea Astronomy and Space Science Institute
Doi, Yasuo
Japan, Tokyo
The University of Tokyo
Choi, Minho
South Korea, Daejeon
Korea Astronomy and Space Science Institute
Kang, Miju
South Korea, Daejeon
Korea Astronomy and Space Science Institute
Coude, Simon
Canada, Montreal
University of Montreal
Li, Huabai
Hong Kong, Hong Kong
Chinese University of Hong Kong
Matsumura, Masafumi
Japan, Takamatsu
Kagawa University
Matthews, Brenda C.
Canada, Ottawa
National Research Council Canada
Canada, Victoria
University of Victoria
Di Francesco, James D.
Canada, Ottawa
National Research Council Canada
Canada, Victoria
University of Victoria
Kawabata, Koji S.
Japan, Higashihiroshima
Hiroshima University
Inutsuka, Shu Ichiro
Japan, Nagoya
Nagoya University
Qiu, Keping
China, Nanjing
Nanjing University
China, Beijing
Ministry of Education of the People's Republic of China
Franzmann, Erica
Canada, Winnipeg
University of Manitoba
Friberg, Per
United States, Hilo
East Asian Observatory
Greaves, Jane S.
United Kingdom, Cardiff
Cardiff University
Kirk, Jason M.
United Kingdom, Preston
University of Central Lancashire
Li, D. H.
China, Beijing
Chinese Academy of Sciences
Shinnaga, Hiroko
Japan, Kagoshima
Kagoshima University
Byun, Do-young
South Korea, Daejeon
Korea Astronomy and Space Science Institute
South Korea, Daejeon
University of Science and Technology Ust
Chen, Hueiru Ru Vivien
Taiwan, Hsinchu
National Tsing Hua University
Taiwan, Nankang
Academia Sinica Taiwan
Chen, Michael Chun Yuan
Canada, Victoria
University of Victoria
Chen, Wenping
Taiwan, Taoyuan
National Central University
Ching, Taochung
China, Beijing
Chinese Academy of Sciences
Cho, Jungyeon
South Korea, Daejeon
Chungnam National University
Chrysostomou, Antonio C.
United Kingdom, Hatfield
University of Hertfordshire
Drabek-Maunder, Emily
United Kingdom, Cardiff
Cardiff University
Eyres, Stewart
United Kingdom, Preston
University of Central Lancashire
Fiege, Jason D.
Canada, Winnipeg
University of Manitoba
Friesen, Rachel K.
United States, Charlottesville
National Radio Astronomy Observatory
Fuller, Gary A.
United Kingdom, Manchester
The University of Manchester
Gledhill, Tim M.
United Kingdom, Hatfield
University of Hertfordshire
Griffin, Matthew J.
United Kingdom, Cardiff
Cardiff University
Gu, Qilao
Hong Kong, Hong Kong
Chinese University of Hong Kong
Hatchell, Jennifer H.
United Kingdom, Exeter
University of Exeter
Holland, Wayne S.
United Kingdom, Edinburgh
Uk Astronomy Technology Centre
United Kingdom, Edinburgh
The University of Edinburgh
Inoue, Tsuyohshi
Japan, Nagoya
Nagoya University
Iwasaki, Kazunari
Japan, Kyoto
Doshisha University
Jeong, Il-gyo
South Korea, Daejeon
Korea Astronomy and Space Science Institute
Kang, Sung-ju
South Korea, Daejeon
Korea Astronomy and Space Science Institute
Kemper, F.
Taiwan, Nankang
Academia Sinica Taiwan
Kim, K. H.
South Korea, Gongju
Kongju National University
Kim, Miryang
South Korea, Daejeon
Korea Astronomy and Space Science Institute
Lacaille, Kevin M.
Canada, Hamilton
Mcmaster University
Canada, Halifax
Dalhousie University
Lee, Jeong Eun
South Korea, Seoul
Kyung Hee University
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, Shengyuan
Taiwan, Nankang
Academia Sinica Taiwan
Schieven, Gerald M.
Canada, Ottawa
National Research Council Canada
Nakanishi, Hiroyuki
Japan, Kagoshima
Kagoshima University
Ohashi, Nagayoshi
Japan, Mitaka
National Institutes of Natural Sciences - National Astronomical Observatory of Japan
Peretto, Nicolas
United Kingdom, Cardiff
Cardiff University
Pyo, Tae-soo
Japan, Hayama
The Graduate University for Advanced Studies
Japan, Mitaka
National Institutes of Natural Sciences - National Astronomical Observatory of Japan
Qian, Lei
China, Beijing
Chinese Academy of Sciences
Rigby, Andrew J.
United Kingdom, Cardiff
Cardiff University
Scaife, Anna M.M.
United Kingdom, Manchester
The University of Manchester
Tang, Yawen
Taiwan, Nankang
Academia Sinica Taiwan
Tomisaka, Kohji
Japan, Mitaka
National Institutes of Natural Sciences - National Astronomical Observatory of Japan
Japan, Hayama
The Graduate University for Advanced Studies
Wang, Hongchi
China, Beijing
Chinese Academy of Sciences
Wang, Jia Wei
Taiwan, Hsinchu
National Tsing Hua University
Yen, Hsiwei
Taiwan, Nankang
Academia Sinica Taiwan
Germany, Garching Bei Munchen
European Southern Observatory
Yuan, Jinghua
China, Beijing
Chinese Academy of Sciences
Zhang, Chuanpeng
China, Beijing
Chinese Academy of Sciences
Zhang, Guoyin
China, Beijing
Chinese Academy of Sciences
Zhou, Jianjun
China, Beijing
Chinese Academy of Sciences
Zhu, Lei
China, Beijing
Chinese Academy of Sciences
Ándré, Philippe J.
France, Gif-sur-yvette
Institut de Recherche Sur Les Lois Fondamentales de L'univers
Dowell, Charles Darren
United States, Pasadena
Jet Propulsion Laboratory
Kataoka, Akimasa
Japan, Mitaka
National Institutes of Natural Sciences - National Astronomical Observatory of Japan
Kobayashi, Masato I.N.
Japan, Nagoya
Nagoya University
Nagata, Tetsuya
Japan, Kyoto
Kyoto University
Seta, Masumichi
Japan, Nishinomiya
Kwansei Gakuin University
Hwang, Jihye
South Korea, Daejeon
Korea Astronomy and Space Science Institute
South Korea, Daejeon
University of Science and Technology Ust
Han, Ilseung
South Korea, Daejeon
Korea Astronomy and Space Science Institute
South Korea, Daejeon
University of Science and Technology Ust
Lee, Hyeseung
South Korea, Daejeon
Chungnam National University
Zenko, Tetsuya
Japan, Kyoto
Kyoto University
Statistics
Citations: 47
Authors: 112
Affiliations: 51
Identifiers
Doi:
10.3847/1538-4357/aac4a6
ISSN:
0004637X
Research Areas
Environmental
Study Design
Cross Sectional Study
Study Approach
Quantitative