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The JCMT BISTRO Survey: The Magnetic Field in the Starless Core ρ Ophiuchus C
Liu,Junhao1,2,3; Qiu,Keping1,2; Berry,David4; Di Francesco,James5,6; Bastien,Pierre7,8; Koch,Patrick M.9; Furuya,Ray S.10,11; Kim,Kee-Tae12; Coudé,Simon8,13; Lee,Chang Won12,14; Soam,Archana12,13; Eswaraiah,Chakali15; Li,Di16,17; Hwang,Jihye12,14; Lyo,A-Ran12,14; Pattle,Kate15; Hasegawa,Tetsuo19; Kwon,Woojin12,14; Lai,Shih-Ping9,15; Ward-Thompson,Derek20; Ching,Tao-Chung16,18; Chen,Zhiwei21; Gu,Qilao22; Li,Dalei23; Li,Hua-bai22; Liu,Hong-Li22; Qian,Lei16; Wang,Hongchi21; Yuan,Jinghua18; Zhang,Chuan-Peng16,18; Zhang,Guoyin16; Zhang,Ya-Peng22; Zhou,Jianjun23; Zhu,Lei16; André,Philippe24; Arzoumanian,Doris25; Aso,Yusuke26; Byun,Do-Young12,14; Chen,Michael Chun-Yuan6; Chen,Huei-Ru Vivien15; Chen,Wen Ping27; Cho,Jungyeon28; Choi,Minho12; Chrysostomou,Antonio29; Chung,Eun Jung12; Doi,Yasuo30; Drabek-Maunder,Emily31; Dowell,C. Darren32; Eyres,Stewart P. S.20; Falle,Sam33; Fanciullo,Lapo9; Fiege,Jason34; Franzmann,Erica34; Friberg,Per4; Friesen,Rachel K.35; Fuller,Gary36; Gledhill,Tim29; Graves,Sarah F.4; Greaves,Jane S.31; Griffin,Matt J.31; Han,Ilseung12,14; Hatchell,Jennifer37; Hayashi,Saeko S.38; Hoang,Thiem12,14; Holland,Wayne39,40; Houde,Martin41; Inoue,Tsuyoshi25; Inutsuka,Shu-ichiro25; Iwasaki,Kazunari42; Jeong,Il-Gyo12; Johnstone,Doug5,6; Kanamori,Yoshihiro30; Kang,Ji-hyun12; Kang,Miju12; Kang,Sung-ju12; Kataoka,Akimasa43; Kawabata,Koji S.44,45,46; Kemper,Francisca9; Kim,Gwanjeong12,14,47; Kim,Jongsoo12,14; Kim,Kyoung Hee48; Kim,Mi-Ryang12; Kim,Shinyoung12,14; Kirk,Jason M.20; Kobayashi,Masato I. N.25; Kusune,Takayoshi25; Kwon,Jungmi49; Lacaille,Kevin M.50,51; Lee,Chin-Fei9,52; Lee,Jeong-Eun53; Lee,Hyeseung28; Lee,Sang-Sung12,14; Liu,Sheng-Yuan9; Liu,Tie4,12; van Loo,Sven54; Mairs,Steve4; Matsumura,Masafumi55; Matthews,Brenda C.5,6; Moriarty-Schieven,Gerald H.5; Nagata,Tetsuya56; Nakamura,Fumitaka43,57; Nakanishi,Hiroyuki58; Ohashi,Nagayoshi38; Onaka,Takashi26; Parker,Josh20; Parsons,Harriet4; Pascale,Enzo31; Peretto,Nicolas31; Pon,Andy41; Pyo,Tae-Soo38,57; Rao,Ramprasad9; Rawlings,Mark G.4; Retter,Brendan31; Richer,John59,60; Rigby,Andrew31; Robitaille,Jean-Fran?ois36; Sadavoy,Sarah3; Saito,Hiro61; Savini,Giorgio62; Scaife,Anna M. M.36; Seta,Masumichi63; Shinnaga,Hiroko64; Tamura,Motohide19,26,65; Tang,Ya-Wen9; Tomisaka,Kohji43,57; Tsukamoto,Yusuke64; Wang,Jia-Wei15; Whitworth,Anthony P.31; Yen,Hsi-Wei9,66; Yoo,Hyunju12; Zenko,Tetsuya56
2019-05-22
Source PublicationThe Astrophysical Journal
ISSN0004-637X
Volume877Issue:1
AbstractAbstract We report 850?μm dust polarization observations of a low-mass (~12 M⊙) starless core in the ρ Ophiuchus cloud, Ophiuchus C, made with the POL-2 instrument on the James Clerk Maxwell Telescope (JCMT) as part of the JCMT B-fields In STar-forming Region Observations survey. We detect an ordered magnetic field projected on the plane of the sky in the starless core. The magnetic field across the ~0.1?pc core shows a predominant northeast–southwest orientation centering between ~40° and ~100°, indicating that the field in the core is well aligned with the magnetic field in lower-density regions of the cloud probed by near-infrared observations and also the cloud-scale magnetic field traced by Planck observations. The polarization percentage (P) decreases with increasing total intensity (I), with a power-law index of ?1.03?±?0.05. We estimate the plane-of-sky field strength (Bpos) using modified Davis–Chandrasekhar–Fermi methods based on structure function (SF), autocorrelation function (ACF), and unsharp masking (UM) analyses. We find that the estimates from the SF, ACF, and UM methods yield strengths of 103?±?46 μG, 136?±?69 μG, and 213?±?115 μG, respectively. Our calculations suggest that the Ophiuchus C core is near magnetically critical or slightly magnetically supercritical (i.e., unstable to collapse). The total magnetic energy calculated from the SF method is comparable to the turbulent energy in Ophiuchus C, while the ACF method and the UM method only set upper limits for the total magnetic energy because of large uncertainties.
KeywordISM: individual objects (Ophiuchus) magnetic fields polarization stars: formation
DOI10.3847/1538-4357/ab0958
Language英语
WOS IDIOP:0004-637X-877-1-ab0958
PublisherThe American Astronomical Society
Citation statistics
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/26729
Collection中国科学院紫金山天文台
Affiliation1.School of Astronomy and Space Science, Nanjing University, 163 Xianlin Avenue, Nanjing 210023, People’s Republic of China; kpqiu@nju.edu.cn
2.Key Laboratory of Modern Astronomy and Astrophysics (Nanjing University), Ministry of Education, Nanjing 210023, People’s Republic of China
3.Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA
4.East Asian Observatory, 660 N. A‘ohōkū Place, University Park, Hilo, HI 96720, USA
5.NRC Herzberg Astronomy and Astrophysics, 5071 West Saanich Road, Victoria, BC V9E 2E7, Canada
6.Department of Physics and Astronomy, University of Victoria, Victoria, BC V8P 1A1, Canada
7.Institut de Recherche sur les Exoplanètes (iREx), Université de Montréal, Département de Physique, C.P. 6128 Succ. Centre-ville, Montréal, QC, H3C 3J7, Canada
8.Centre de Recherche en Astrophysique du Québec (CRAQ), Université de Montréal, Département de Physique, C.P. 6128 Succ. Centre-ville, Montréal, QC, H3C 3J7, Canada
9.Academia Sinica Institute of Astronomy and Astrophysics, P.O. Box 23-141, Taipei 10617, Taiwan
10.Tokushima University, Minami Jousanajima-machi 1-1, Tokushima 770-8502, Japan
11.Institute of Liberal Arts and Sciences Tokushima University, Minami Jousanajima-machi 1-1, Tokushima 770-8502, Japan
12.Korea Astronomy and Space Science Institute (KASI), 776 Daedeokdae-ro, Yuseong-gu, Daejeon 34055, Republic of Korea
13.SOFIA Science Center, Universities Space Research Association, NASA Ames Research Center, M.S. N232-12, Moffett Field, CA 94035, USA
14.University of Science and Technology, Korea (UST), 217 Gajeong-ro, Yuseong-gu, Daejeon 34113, Republic of Korea
15.Institute of Astronomy and Department of Physics, National Tsing Hua University, Hsinchu 30013, Taiwan
16.CAS Key Laboratory of FAST, National Astronomical Observatories of China (NAOC), Chinese Academy of Sciences, People’s Republic of China
17.University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
18.National Astronomical Observatories, Chinese Academy of Sciences, A20 Datun Road, Chaoyang District, Beijing 100012, People’s Republic of China
19.National Astronomical Observatory of Japan, National Institutes of Natural Sciences, Osawa, Mitaka, Tokyo 181-8588, Japan
20.Jeremiah Horrocks Institute, University of Central Lancashire, Preston PR1 2HE, UK
21.Purple Mountain Observatory, Chinese Academy of Sciences, 2 West Beijing Road, 210008 Nanjing, People’s Republic of China
22.Department of Physics, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong
23.Xinjiang Astronomical Observatory, Chinese Academy of Sciences, 150 Science 1-Street, Urumqi 830011, Xinjiang, People’s Republic of China
24.Laboratoire AIM CEA/DSM-CNRS-Universit Paris Diderot, IRFU/Service dAstrophysique, CEA Saclay, F-91191 Gif-sur-Yvette, France
25.Department of Physics, Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8602, Japan
26.Department of Astronomy, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
27.Institute of Astronomy, National Central University, Chung-Li 32054, Taiwan
28.Department of Astronomy and Space Science, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Republic of Korea
29.School of Physics, Astronomy & Mathematics, University of Hertfordshire, College Lane, Hatfield, Hertfordshire AL10 9AB, UK
30.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
31.School of Physics and Astronomy, Cardiff University, The Parade, Cardiff, CF24 3AA, UK
32.Jet Propulsion Laboratory, M/S 169-506, 4800 Oak Grove Drive, Pasadena, CA 91109, USA
33.Department of Applied Mathematics, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, UK
34.Department of Physics and Astronomy, The University of Manitoba, Winnipeg, Manitoba R3T2N2, Canada
35.National Radio Astronomy Observatory, 520 Edgemont Road, Charlottesville, VA 22903, USA
36.Jodrell Bank Centre for Astrophysics, School of Physics and Astronomy, University of Manchester, Oxford Road, Manchester, M13 9PL, UK
37.Physics and Astronomy, University of Exeter, Stocker Road, Exeter EX4 4QL, UK
38.Subaru Telescope, National Astronomical Observatory of Japan, 650 N. A’ohōkū Place, University Park, Hilo, HI 96720, USA
39.UK Astronomy Technology Centre, Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ, UK
40.Institute for Astronomy, University of Edinburgh, Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ, UK
41.Department of Physics and Astronomy, The University of Western Ontario, 1151 Richmond Street, London N6A 3K7, Canada
42.Department of Environmental Systems Science, Doshisha University, Tatara, Miyakodani 1-3, Kyotanabe, Kyoto 610-0394, Japan
43.Division of Theoretical Astronomy, National Astronomical Observatory of Japan, Mitaka, Tokyo 181-8588, Japan
44.Hiroshima Astrophysical Science Center, Hiroshima University, Kagamiyama 1-3-1, Higashi-Hiroshima, Hiroshima 739-8526, Japan
45.Department of Physics, Hiroshima University, Kagamiyama 1-3-1, Higashi-Hiroshima, Hiroshima 739-8526, Japan
46.Core Research for Energetic Universe (CORE-U), Hiroshima University, Kagamiyama 1-3-1, Higashi-Hiroshima, Hiroshima 739-8526, Japan
47.Nobeyama Radio Observatory (NRO), National Astronomical Observatory of Japan (NAOJ), Japan
48.Department of Earth Science Education, Kongju National University, 56 Gongjudaehak-ro, Gongju-si, Chungcheongnam-do 32588, Republic of Korea
49.Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, 3-1-1 Yoshinodai, Chuo-ku, Sagamihara, Kanagawa 252-5210, Japan
50.Department of Physics and Astronomy, McMaster University, Hamilton, ON L8S 4M1, Canada
51.Department of Physics and Atmospheric Science, Dalhousie University, Halifax B3H 4R2, Canada
52.Graduate Institute of Astronomy and Astrophysics, National Taiwan University, No. 1, Sec. 4, Roosevelt Road, Taipei 10617, Taiwan
53.School of Space Research, Kyung Hee University, 1732 Deogyeong-daero, Giheung-gu, Yongin-si, Gyeonggi-do 17104, Republic of Korea
54.School of Physics and Astronomy, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, UK
55.Kagawa University, Saiwai-cho 1-1, Takamatsu, Kagawa, 760-8522, Japan
56.Department of Astronomy, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan
57.SOKENDAI (The Graduate University for Advanced Studies), Hayama, Kanagawa 240-0193, Japan
58.Department of Physics and Astronomy, Graduate School of Science and Engineering, Kagoshima University, 1-21-35 Korimoto, Kagoshima, Kagoshima 890-0065, Japan
59.Astrophysics Group, Cavendish Laboratory, J. J. Thomson Avenue, Cambridge CB3 0HE, UK
60.Kavli Institute for Cosmology, Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge, CB3 0HA, UK
61.Department of Astronomy and Earth Sciences, Tokyo Gakugei University, Koganei, Tokyo 184-8501, Japan
62.OSL, Physics & Astronomy Dept., University College London, WC1E 6BT London, UK
63.Department of Physics, School of Science and Technology, Kwansei Gakuin University, 2-1 Gakuen, Sanda, Hyogo 669-1337, Japan
64.Department of Physics and Astronomy, Graduate School of Science and Engineering, Kagoshima University, 1-21-35 Korimoto, Kagoshima, Kagoshima 890-0065, Japan
65.Astrobiology Center, National Institutes of Natural Sciences, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan
66.European Southern Observatory (ESO), Karl-Schwarzschild-Strasse 2, D-85748 Garching, Germany
Recommended Citation
GB/T 7714
Liu,Junhao,Qiu,Keping,Berry,David,et al. The JCMT BISTRO Survey: The Magnetic Field in the Starless Core ρ Ophiuchus C[J]. The Astrophysical Journal,2019,877(1).
APA Liu,Junhao.,Qiu,Keping.,Berry,David.,Di Francesco,James.,Bastien,Pierre.,...&Zenko,Tetsuya.(2019).The JCMT BISTRO Survey: The Magnetic Field in the Starless Core ρ Ophiuchus C.The Astrophysical Journal,877(1).
MLA Liu,Junhao,et al."The JCMT BISTRO Survey: The Magnetic Field in the Starless Core ρ Ophiuchus C".The Astrophysical Journal 877.1(2019).
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