NAOC Open IR
Observations of Magnetic Fields Surrounding LkHα 101 Taken by the BISTRO Survey with JCMT-POL-2
Ngoc,Nguyen Bich1; Diep,Pham Ngoc1; Parsons,Harriet2; Pattle,Kate3; Hoang,Thiem4,5; Ward-Thompson,Derek6; Tram,Le Ngoc7; Hull,Charles L. H.8,9; Tahani,Mehrnoosh10; Furuya,Ray11; Bastien,Pierre12; Qiu,Keping13; Hasegawa,Tetsuo14; Kwon,Woojin15; Doi,Yasuo16; Lai,Shih-Ping17,18; Coudé,Simon19; Berry,David2; Ching,Tao-Chung20,21; Hwang,Jihye4,5; Soam,Archana19; Wang,Jia-Wei18; Arzoumanian,Doris22; Bourke,Tyler L.23,24; Byun,Do-Young4,5; Chen,Huei-Ru Vivien17,18; Chen,Zhiwei25; Chen,Wen Ping26; Chen,Mike27; Cho,Jungyeon28; Choi,Yunhee4; Choi,Minho4; Chrysostomou,Antonio29; Chung,Eun Jung28; Dai,Sophia21; Francesco,James Di27,30; Duan,Yan21; Duan,Hao-Yuan17; Eden,David31; Eswaraiah,Chakali20,21; Fanciullo,Lapo18; Fiege,Jason32; Fissel,Laura M.33; Franzmann,Erica32; Friberg,Per34; Friesen,Rachel34; Fuller,Gary35; Gledhill,Tim29; Graves,Sarah2; Greaves,Jane36; Griffin,Matt36; Gu,Qilao37; Han,Ilseung4,5; Hatchell,Jennifer38; Hayashi,Saeko39; Houde,Martin40; Inoue,Tsuyoshi41; Inutsuka,Shu-ichiro41; Iwasaki,Kazunari42; Jeong,Il-Gyo4; Johnstone,Doug27,30; Kang,Ji-hyun4; Kang,Sung-ju4; Kang,Miju4; Kataoka,Akimasa43; Kawabata,Koji44,45,46; Kemper,Francisca18,47; Kim,Kee-Tae4,5; Kim,Jongsoo4,5; Pyo,Tae-Soo39,48; Qian,Lei20; Rao,Ramprasad18; Rawlings,Mark2; Rawlings,Jonathan49; Retter,Brendan36; Richer,John50,51; Rigby,Andrew36; Sadavoy,Sarah33; Saito,Hiro52; Savini,Giorgio53; Scaife,Anna35; Seta,Masumichi54; Kim,Gwanjeong55; Kim,Shinyoung4,5; Kim,Kyoung Hee4; Kim,Mi-Ryang4; Kirchschlager,Florian49; Kirk,Jason6; Kobayashi,Masato I. N.56; Koch,Patrick M.18; Konyves,Vera6; Kusune,Takayoshi14; Kwon,Jungmi57; Lacaille,Kevin58,59; Law,Chi-Yan37,60; Lee,Sang-Sung4,5; Lee,Yong-Hee61; Lee,Chin-Fei18; Lee,Jeong-Eun61; Lee,Hyeseung28; Lee,Chang Won4,5; Li,Di62,63; Li,Hua-bai37; Li,Dalei64; Liu,Hong-Li65,66; Liu,Junhao13,67; Liu,Tie68; Liu,Sheng-Yuan18; Lu,Xing69; Lyo,A-Ran4; Mairs,Steve70; Matsumura,Masafumi70; Matthews,Brenda27,30; Moriarty-Schieven,Gerald30; Nagata,Tetsuya71; Nakamura,Fumitaka43,48; Nakanishi,Hiroyuki72; Ohashi,Nagayoshi39; Onaka,Takashi57,73; Park,Geumsook4; Peretto,Nicolas36; Shimajiri,Yoshito14; Shinnaga,Hiroko72; Tamura,Motohide14,57,74; Tang,Ya-Wen18; Tang,Xindi75; Tomisaka,Kohji43,48; Tsukamoto,Yusuke72; Viti,Serena76; Wang,Hongchi77; Whitworth,Anthony36; Xie,Jinjin21; Yen,Hsi-Wei18; Yoo,Hyunju4; Yuan,Jinghua21; Yun,Hyeong-Sik61; Zenko,Tetsuya71; Zhang,Yapeng37; Zhang,Chuan-Peng20,21; Zhang,Guoyin20; Zhou,Jianjun64; Zhu,Lei20; Looze,Ilse de76; André,Philippe78; Dowell,C. Darren79; Eyres,Stewart80; Falle,Sam81; Robitaille,Jean-Fran?ois82; van Loo,Sven83
2021-02-01
Source PublicationThe Astrophysical Journal
ISSN0004-637X
Volume908Issue:1
AbstractAbstract We report the first high spatial resolution measurement of magnetic fields surrounding LkHα 101, part of the Auriga–California molecular cloud. The observations were taken with the POL-2 polarimeter on the James Clerk Maxwell Telescope within the framework of the B-fields In Star-forming Region Observations (BISTRO) survey. Observed polarization of thermal dust emission at 850 μm is found to be mostly associated with the redshifted gas component of the cloud. The magnetic field displays a relatively complex morphology. Two variants of the Davis–Chandrasekhar–Fermi method, unsharp masking and structure function, are used to calculate the strength of magnetic fields in the plane of the sky, yielding a similar result of BPOS?~?115 μG. The mass-to-magnetic-flux ratio in critical value units, λ?~?0.3, is the smallest among the values obtained for other regions surveyed by POL-2. This implies that the LkHα 101 region is subcritical, and the magnetic field is strong enough to prevent gravitational collapse. The inferred δB/B0?~?0.3 implies that the large-scale component of the magnetic field dominates the turbulent one. The variation of the polarization fraction with total emission intensity can be fitted by a power law with an index of α?=?0.82?±?0.03, which lies in the range previously reported for molecular clouds. We find that the polarization fraction decreases rapidly with proximity to the only early B star (LkHα 101) in the region. Magnetic field tangling and the joint effect of grain alignment and rotational disruption by radiative torques can potentially explain such a decreasing trend.
KeywordInterstellar magnetic fields Molecular clouds Star formation
DOI10.3847/1538-4357/abd0fc
Language英语
WOS IDIOP:0004-637X-908-1-abd0fc
PublisherThe American Astronomical Society
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/60470
Collection中国科学院国家天文台
Corresponding AuthorDiep,Pham Ngoc
Affiliation1.Vietnam National Space Center, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Hanoi, Vietnam; pndiep@vnsc.org.vn
2.East Asian Observatory, 660 N. A’ohōkū Place, University Park, Hilo, HI 96720, USA
3.National University of Ireland Galway, University Road, Galway, H91 TK33, Ireland
4.Korea Astronomy and Space Science Institute, 776 Daedeokdae-ro, Yuseong-gu, Daejeon 34055, Republic of Korea
5.University of Science and Technology, Korea, 217 Gajeong-ro, Yuseong-gu, Daejeon 34113, Republic of Korea
6.Jeremiah Horrocks Institute, University of Central Lancashire, Preston PR1 2HE, UK
7.University of Science and Technology of Hanoi, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Hanoi, Vietnam
8.National Astronomical Observatory of Japan, NAOJ Chile, Alonso de Córdova 3788, Office 61B, 7630422, Vitacura, Santiago, Chile
9.Joint ALMA Observatory, Alonso de Córdova 3107, Vitacura, Santiago, Chile
10.Dominion Radio Astrophysical Observatory, Herzberg Astronomy and Astrophysics Research Centre, National Research Council Canada, P.O. Box 248, Penticton, BC V2A 6J9 Canada
11.Institute of Liberal Arts and Sciences Tokushima University, Minami Jousanajima-machi 1-1, Tokushima 770-8502, Japan
12.Centre de recherche en astrophysique du Québec & département de physique, Université de Montréal, 1375, Avenue Thérèse-Lavoie-Roux, Montréal, QC, H2V 0B3, Canada
13.School of Astronomy and Space Science, Nanjing University, 163 Xianlin Avenue, Nanjing 210023, People’s Republic of China
14.National Astronomical Observatory of Japan, National Institutes of Natural Sciences, Osawa, Mitaka, Tokyo 181-8588, Japan
15.Department of Earth Science Education, Seoul National University (SNU), 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
16.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
17.Institute of Astronomy and Department of Physics, National Tsing Hua University, Hsinchu 30013, Taiwan
18.Academia Sinica Institute of Astronomy and Astrophysics, No.1, Sec. 4., Roosevelt Road, Taipei 10617, Taiwan
19.SOFIA Science Center, Universities Space Research Association, NASA Ames Research Center, Moffett Field, California 94035, USA
20.CAS Key Laboratory of FAST, National Astronomical Observatories, Chinese Academy of Sciences, People’s Republic of China
21.National Astronomical Observatories, Chinese Academy of Sciences, A20 Datun Road, Chaoyang District, Beijing 100012, People’s Republic of China
22.Instituto de Astrofísica e Ciências do Espa?o, Universidade do Porto, CAUP, Rua das Estrelas, PT4150-762 Porto, Portugal
23.SKA Organisation, Jodrell Bank, Lower Withington, Macclesfield, SK11 9FT, UK
24.Jodrell Bank Centre for Astrophysics, School of Physics and Astronomy, University of Manchester, Manchester, M13 9PL, UK
25.Purple Mountain Observatory and Key Laboratory of Radio Astronomy, Chinese Academy of Sciences, 10 Yuanhua Road, Nanjing 210023, China
26.Institute of Astronomy, National Central University, Zhongli 32001, Taiwan
27.Department of Physics and Astronomy, University of Victoria, Victoria, BC V8W 2Y2, Canada
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.NRC Herzberg Astronomy and Astrophysics, 5071 West Saanich Road, Victoria, BC V9E 2E7, Canada
31.Astrophysics Research Institute, Liverpool John Moores University, IC2, Liverpool Science Park, 146 Brownlow Hill, Liverpool, L3 5RF, UK
32.Department of Physics and Astronomy, The University of Manitoba, Winnipeg, Manitoba R3T2N2, Canada
33.Department for Physics, Engineering Physics and Astrophysics, Queen’s University, Kingston, ON, K7L 3N6, Canada
34.National Radio Astronomy Observatory, 520 Edgemont Road, Charlottesville, VA 22903, USA
35.Jodrell Bank Centre for Astrophysics, School of Physics and Astronomy, University of Manchester, Oxford Road, Manchester, M13 9PL, UK
36.School of Physics and Astronomy, Cardiff University, The Parade, Cardiff, CF24 3AA, UK
37.Department of Physics, The Chinese University of Hong Kong, Shatin, N. T., Hong Kong, People's Republic of China
38.Physics and Astronomy, University of Exeter, Stocker Road, Exeter EX4 4QL, UK
39.Subaru Telescope, National Astronomical Observatory of Japan, 650 N. A’ohōkū Place, Hilo, HI 96720, USA
40.Department of Physics and Astronomy, The University of Western Ontario, 1151 Richmond Street, London N6A 3K7, Canada
41.Department of Physics, Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8602, Japan
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.European Southern Observatory, Karl-Schwarzschild-Str. 2, D-85748 Garching, Germany
48.SOKENDAI (The Graduate University for Advanced Studies), Hayama, Kanagawa 240-0193, Japan
49.Department of Physics and Astronomy, University College London, WC1E 6BT London, UK
50.Astrophysics Group, Cavendish Laboratory, J.J. Thomson Avenue, Cambridge CB3 0HE, UK
51.Kavli Institute for Cosmology, Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge, CB3 0HA, UK
52.Faculty of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8577, Japan
53.OSL, Physics & Astronomy Department, University College London, WC1E 6BT London, UK
54.Department of Physics, School of Science and Technology, Kwansei Gakuin University, 2-1 Gakuen, Sanda, Hyogo 669-1337, Japan
55.Nobeyama Radio Observatory, National Astronomical Observatory of Japan, National Institutes of Natural Sciences, Nobeyama, Minamimaki, Minamisaku, Nagano 384-1305, Japan
56.Astronomical Institute, Graduate School of Science, Tohoku University, Aoba-ku, Sendai, Miyagi 980-8578, Japan
57.Department of Astronomy, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
58.Department of Physics and Astronomy, McMaster University, Hamilton, ON L8S 4M1, Canada
59.Department of Physics and Atmospheric Science, Dalhousie University, Halifax B3H 4R2, Canada
60.Department of Space, Earth & Environment, Chalmers University of Technology, SE-412 96 Gothenburg, Sweden
61.School of Space Research, Kyung Hee University, 1732 Deogyeong-daero, Giheung-gu, Yongin-si, Gyeonggi-do 17104, Republic of Korea
62.University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
63.NAOC-UKZN Computational Astrophysics Centre, University of KwaZulu-Natal, Durban 4000, South Africa
64.Xinjiang Astronomical Observatory, Chinese Academy of Sciences, 150 Science 1-Street, Urumqi 830011, Xinjiang, People’s Republic of China
65.Departamento de Astronomía, Universidad de Concepcíon, Av. Esteban Iturra s/n, Distrito Universitario, 160-C, Chile
66.Department of Astronomy, Yunnan University, Kunming, 650091, People’s Republic of China
67.Key Laboratory of Modern Astronomy and Astrophysics (Nanjing University), Ministry of Education, Nanjing 210023, People’s Republic of China
68.Key Laboratory for Research in Galaxies and Cosmology, Shanghai Astronomical Observatory, Chinese Academy of Sciences, 80 Nandan Road, Shanghai 200030, People’s Republic of China
69.National Astronomical Observatory of Japan, Mitaka, Tokyo 181-8588, Japan
70.Faculty of Education & Center for Educational Development and Support, Kagawa University, Saiwai-cho 1-1, Takamatsu, Kagawa, 760-8522, Japan
71.Department of Astronomy, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan
72.Department of Physics and Astronomy, Graduate School of Science and Engineering, Kagoshima University, 1-21-35 Korimoto, Kagoshima, Kagoshima 890-0065, Japan
73.Department of Physics, Faculty of Science and Engineering, Meisei University, 2-1-1 Hodokubo, Hino, Tokyo 1191-8506, Japan
74.Astrobiology Center, National Institutes of Natural Sciences, 2-21-1 Osawa, Mitaka, Tokyo 81-8588, Japan
75.Xinjiang Astronomical Observatory, Chinese Academy of Sciences, 830011 Urumqi, People’s Republic of China
76.Physics & Astronomy Dept., University College London, WC1E 6BT London, UK
77.Purple Mountain Observatory, Chinese Academy of Sciences, 2 West Beijing Road, 210008 Nanjing, People’s Republic of China
78.Laboratoire AIM CEA/DSM-CNRS-Université Paris Diderot, IRFU/Service d’Astrophysique, CEA Saclay, F-91191 Gif-sur-Yvette, France
79.Jet Propulsion Laboratory, M/S 169-506, 4800 Oak Grove Drive, Pasadena, CA 91109, USA
80.University of South Wales, Pontypridd, CF37 1DL, UK
81.Department of Applied Mathematics, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, UK
82.Univ. Grenoble Alpes, CNRS, IPAG, F-38000 Grenoble, France
83.School of Physics and Astronomy, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, UK
Recommended Citation
GB/T 7714
Ngoc,Nguyen Bich,Diep,Pham Ngoc,Parsons,Harriet,et al. Observations of Magnetic Fields Surrounding LkHα 101 Taken by the BISTRO Survey with JCMT-POL-2[J]. The Astrophysical Journal,2021,908(1).
APA Ngoc,Nguyen Bich.,Diep,Pham Ngoc.,Parsons,Harriet.,Pattle,Kate.,Hoang,Thiem.,...&van Loo,Sven.(2021).Observations of Magnetic Fields Surrounding LkHα 101 Taken by the BISTRO Survey with JCMT-POL-2.The Astrophysical Journal,908(1).
MLA Ngoc,Nguyen Bich,et al."Observations of Magnetic Fields Surrounding LkHα 101 Taken by the BISTRO Survey with JCMT-POL-2".The Astrophysical Journal 908.1(2021).
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