PMO OpenIR
Magnetic Fields toward Ophiuchus-B Derived from SCUBA-2 Polarization Measurements
Soam,Archana1; Pattle,Kate2,3,4; Ward-Thompson,Derek2; Lee,Chang Won1,5; Sadavoy,Sarah6; Koch,Patrick M.7; Kim,Gwanjeong1,5,8; Kwon,Jungmi9; Kwon,Woojin1,5; Arzoumanian,Doris10; Berry,David11; Hoang,Thiem1,5; Tamura,Motohide3,12,13; Lee,Sang-Sung1,5; Liu,Tie1,11; Kim,Kee-Tae1; Johnstone,Doug14,15; Nakamura,Fumitaka16,17; Lyo,A-Ran1; Onaka,Takashi12; Kim,Jongsoo1,5; Furuya,Ray S.18,19; Hasegawa,Tetsuo3; Lai,Shih-Ping4,7; Bastien,Pierre20; Chung,Eun Jung1; Kim,Shinyoung1,5; Parsons,Harriet11; Rawlings,Mark G.11; Mairs,Steve11; Graves,Sarah F.11; Robitaille,Jean-Franois21; Liu,Hong-Li22; Whitworth,Anthony P.23; Eswaraiah,Chakali4; Rao,Ramprasad7; Yoo,Hyunju24; Houde,Martin25; Kang,Ji-hyun1; Doi,Yasuo26; Choi,Minho1; Kang,Miju1; Coudé,Simon20; Li,Hua-bai22; Matsumura,Masafumi27; Matthews,Brenda C.14,15; Pon,Andy25; Francesco,James Di14,15; Hayashi,Saeko S.28; Kawabata,Koji S.29,30,31; Inutsuka,Shu-ichiro10; Qiu,Keping32,33; Franzmann,Erica34; Friberg,Per11; Greaves,Jane S.23; Kirk,Jason M.2; Li,Di35; Shinnaga,Hiroko36; Loo,Sven van37; Aso,Yusuke12; Byun,Do-Young1,5; Chen,Huei-Ru4,7; Chen,Mike C.-Y.15; Chen,Wen Ping38; Ching,Tao-Chung35,39; Cho,Jungyeon24; Chrysostomou,Antonio40; Drabek-Maunder,Emily23; Eyres,Stewart P. S.2; Fiege,Jason34; Friesen,Rachel K.41; Fuller,Gary21; Gledhill,Tim40; Griffin,Matt J.23; Gu,Qilao22; Hatchell,Jennifer42; Holland,Wayne43,44; Inoue,Tsuyoshi10; Iwasaki,Kazunari45; Jeong,Il-Gyo1; Kang,Sung-ju1; Kemper,Francisca7; Kim,Kyoung Hee46; Kim,Mi-Ryang1; Lacaille,Kevin M.47,48; Lee,Jeong-Eun49; Li,Dalei50; Liu,Junhao32,33; Liu,Sheng-Yuan7; Moriarty-Schieven,Gerald H.14; Nakanishi,Hiroyuki36; Ohashi,Nagayoshi28; Peretto,Nicolas23; Pyo,Tae-Soo17,28; Qian,Lei35; Retter,Brendan23; Richer,John51,52; Rigby,Andrew23; Savini,Giorgio53; Scaife,Anna M. M.21; Tang,Ya-Wen7; Tomisaka,Kohji16,17; Wang,Hongchi54; Wang,Jia-Wei4; Yen,Hsi-Wei7,55; Yuan,Jinghua39; Zhang,Chuan-Peng35,39; Zhang,Guoyin35; Zhou,Jianjun50; Zhu,Lei35; André,Philippe56; Dowell,C. Darren57; Falle,Sam58; Tsukamoto,Yusuke36; Kanamori,Yoshihiro26; Kataoka,Akimasa16; Kobayashi,Masato I. N.10; Nagata,Tetsuya59; Saito,Hiro60; Seta,Masumichi61; Hwang,Jihye1,5; Han,Ilseung1,5; Lee,Hyeseung24; Zenko,Tetsuya59
2018-07-03
Source PublicationThe Astrophysical Journal
ISSN0004-637X
Volume861Issue:1
AbstractAbstract 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.
KeywordISM: individual objects (Ophiuchus) ISM: structure polarization radio continuum: ISM stars: formation
DOI10.3847/1538-4357/aac4a6
Language英语
WOS IDIOP:0004-637X-861-1-aac4a6
PublisherThe American Astronomical Society
Citation statistics
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/23451
Collection中国科学院紫金山天文台
Affiliation1.Korea Astronomy and Space Science Institute, 776 Daedeokdae-ro, Yuseong-gu, Daejeon 34055, Republic of Korea; archanasoam.bhu@gmail.com
2.Jeremiah Horrocks Institute, University of Central Lancashire, Preston PR1 2HE, UK
3.National Astronomical Observatory of Japan, National Institutes of Natural Sciences, Osawa, Mitaka, Tokyo 181-8588, Japan
4.Institute of Astronomy and Department of Physics, National Tsing Hua University, Hsinchu 30013, Taiwan
5.Korea University of Science and Technology, 217 Gajang-ro, Yuseong-gu, Daejeon 34113, Republic of Korea
6.Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA
7.Academia Sinica Institute of Astronomy and Astrophysics, P.O. Box 23-141, Taipei 10617, Taiwan
8.Nobeyama Radio Observatory (NRO), National Astronomical Observatory of Japan (NAOJ), Japan
9.Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, 3-1-1 Yoshinodai, Chuo-ku, Sagamihara, Kanagawa 252-5210, Japan
10.Department of Physics, Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8602, Japan
11.East Asian Observatory, 660 N. A‘ohōkū Place, University Park, Hilo, HI 96720, USA
12.Department of Astronomy, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
13.Astrobiology Center, National Institutes of Natural Sciences, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan
14.NRC Herzberg Astronomy and Astrophysics, 5071 West Saanich Road, Victoria, BC V9E 2E7, Canada
15.Department of Physics and Astronomy, University of Victoria, Victoria, BC V8P 1A1, Canada
16.Division of Theoretical Astronomy, National Astronomical Observatory of Japan, Mitaka, Tokyo 181-8588, Japan
17.SOKENDAI (The Graduate University for Advanced Studies), Hayama, Kanagawa 240-0193, Japan
18.Tokushima University, Minami Jousanajima-machi 1-1, Tokushima 770-8502, Japan
19.Institute of Liberal Arts and Sciences Tokushima University, Minami Jousanajima-machi 1-1, Tokushima 770-8502, Japan
20.Centre de recherche en astrophysique du Québec & département de physique, Université de Montréal, C.P. 6128, Succ. Centre-ville, Montréal, QC, H3C 3J7, Canada
21.Jodrell Bank Centre for Astrophysics, School of Physics and Astronomy, University of Manchester, Oxford Road, Manchester, M13 9PL, UK
22.Department of Physics, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong
23.School of Physics and Astronomy, Cardiff University, The Parade, Cardiff, CF24 3AA, UK
24.Department of Astronomy and Space Science, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Republic of Korea
25.Department of Physics and Astronomy, The University of Western Ontario, 1151 Richmond Street, London N6A 3K7, Canada
26.Department of Earth Science and Astronomy, Graduate School of Arts and Sciences, The University of Tokyo, 3-8-1 Komaba, Meguro, Tokyo 153-8902, Japan
27.Kagawa University, Saiwai-cho 1-1, Takamatsu, Kagawa, 760-8522, Japan
28.Subaru Telescope, National Astronomical Observatory of Japan, 650 N. A‘ohōkū Place, Hilo, HI 96720, USA
29.Hiroshima Astrophysical Science Center, Hiroshima University, Kagamiyama 1-3-1, Higashi-Hiroshima, Hiroshima 739-8526, Japan
30.Department of Physics, Hiroshima University, Kagamiyama 1-3-1, Higashi-Hiroshima, Hiroshima 739-8526, Japan
31.Core Research for Energetic Universe (CORE-U), Hiroshima University, Kagamiyama 1-3-1, Higashi-Hiroshima, Hiroshima 739-8526, Japan
32.School of Astronomy and Space Science, Nanjing University, 163 Xianlin Avenue, Nanjing 210023, People's Republic of China
33.Key Laboratory of Modern Astronomy and Astrophysics (Nanjing University), Ministry of Education, Nanjing 210023, People's Republic of China
34.Department of Physics and Astronomy, The University of Manitoba, Winnipeg, Manitoba R3T2N2, Canada
35.CAS Key Laboratory of FAST, National Astronomical Observatories, Chinese Academy of Sciences, People's Republic of China
36.Department of Physics and Astronomy, Graduate School of Science and Engineering, Kagoshima University, 1-21-35 Korimoto, Kagoshima, Kagoshima 890-0065, Japan
37.School of Physics and Astronomy, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, UK
38.Institute of Astronomy, National Central University, Chung-Li 32054, Taiwan
39.National Astronomical Observatories, Chinese Academy of Sciences, A20 Datun Road, Chaoyang District, Beijing 100012, People's Republic of China
40.School of Physics, Astronomy & Mathematics, University of Hertfordshire, College Lane, Hatfield, Hertfordshire AL10 9AB, UK
41.National Radio Astronomy Observatory, 520 Edgemont Road, Charlottesville, VA 22903, USA
42.Physics and Astronomy, University of Exeter, Stocker Road, Exeter EX4 4QL, UK
43.UK Astronomy Technology Centre, Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ, UK
44.Institute for Astronomy, University of Edinburgh, Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ, UK
45.Department of Environmental Systems Science, Doshisha University, Tatara, Miyakodani 1-3, Kyotanabe, Kyoto 610-0394, Japan
46.Department of Earth Science Education, Kongju National University, 56 Gongjudaehak-ro, Gongju-si, Chungcheongnam-do 32588, Republic of Korea
47.Department of Physics and Astronomy, McMaster University, Hamilton, ON L8S 4M1 Canada
48.Department of Physics and Atmospheric Science, Dalhousie University, Halifax B3H 4R2, Canada
49.School of Space Research, Kyung Hee University, 1732 Deogyeong-daero, Giheung-gu, Yongin-si, Gyeonggi-do 17104, Republic of Korea
50.Xinjiang Astronomical Observatory, Chinese Academy of Sciences, 150 Science 1-Street, Urumqi 830011, Xinjiang, People's Republic of China
51.Astrophysics Group, Cavendish Laboratory, J. J. Thomson Avenue, Cambridge CB3 0HE, UK
52.Kavli Institute for Cosmology, Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge, CB3 0HA, UK
53.OSL, Physics & Astronomy Dept., University College London, WC1E 6BT London, UK
54.Purple Mountain Observatory, Chinese Academy of Sciences, 2 West Beijing Road, 210008 Nanjing, People's Republic of China
55.European Southern Observatory (ESO), Karl-Schwarzschild-Strae 2, D-85748 Garching, Germany
56.Laboratoire AIM CEA/DSM-CNRS-Universit Paris Diderot, IRFU/Service dAstrophysique, CEA Saclay, F-91191 Gif-sur-Yvette, France
57.Jet Propulsion Laboratory, M/S 169-506, 4800 Oak Grove Drive, Pasadena, CA 91109, USA
58.Department of Applied Mathematics, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, UK
59.Department of Astronomy, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan
60.Department of Astronomy and Earth Sciences, Tokyo Gakugei University, Koganei, Tokyo 184-8501, Japan
61.Department of Physics, School of Science and Technology, Kwansei Gakuin University, 2-1 Gakuen, Sanda, Hyogo 669-1337, Japan
Recommended Citation
GB/T 7714
Soam,Archana,Pattle,Kate,Ward-Thompson,Derek,et al. Magnetic Fields toward Ophiuchus-B Derived from SCUBA-2 Polarization Measurements[J]. The Astrophysical Journal,2018,861(1).
APA Soam,Archana.,Pattle,Kate.,Ward-Thompson,Derek.,Lee,Chang Won.,Sadavoy,Sarah.,...&Zenko,Tetsuya.(2018).Magnetic Fields toward Ophiuchus-B Derived from SCUBA-2 Polarization Measurements.The Astrophysical Journal,861(1).
MLA Soam,Archana,et al."Magnetic Fields toward Ophiuchus-B Derived from SCUBA-2 Polarization Measurements".The Astrophysical Journal 861.1(2018).
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