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The JCMT BISTRO Survey: The Magnetic Field of the Barnard 1 Star-forming Region

文献类型：期刊论文

作者Zhu, Lei38; Zhou, Jianjun16; Zhang, Guoyin38; Zhang, Chuan-Peng38; Zenko, Tetsuya11; Yuan, Jinghua38; Yoo, Hyunju37; Yen, Hsi-Wei1,50; Whitworth, Anthony P.64; Wang, Jia-Wei51
刊名ASTROPHYSICAL JOURNAL
出版日期2019-06-01
卷号877期号:2页码:17
ISSN号0004-637X
关键词ISM: clouds ISM: individual objects (Barnard 1) ISM: magnetic fields polarization stars: formation submillimeter: ISM
DOI10.3847/1538-4357/ab1b23
通讯作者Coude, Simon(scoude@sofia.usra.edu)
英文摘要We present the POL-2 850 mu m linear polarization map of the Barnard 1 clump in the Perseus molecular cloud complex from the B-fields In STar-forming Region Observations survey at the James Clerk Maxwell Telescope. We find a trend of decreasing polarization fraction as a function of total intensity, which we link to depolarization effects toward higher-density regions of the cloud. We then use the polarization data at 850 mu m to infer the planeof-sky orientation of the large-scale magnetic field in Barnard 1. This magnetic field runs north-south across most of the cloud, with the exception of B 1-c, where it turns more east-west. From the dispersion of polarization angles, we calculate a turbulence correlation length of 5.0 +/- 2.'' 5 (1500 au) and a turbulent-to-total magnetic energy ratio of 0.5 +/- 0.3 inside the cloud. We combine this turbulent-to-total magnetic energy ratio with observations of NH 3 molecular lines from the Green Bank Ammonia Survey to estimate the strength of the plane-of-sky component of the magnetic field through the Davis-Chandrasekhar-Fermi method. With a plane-of-sky amplitude of 120 +/- 60 mu G and a criticality criterion lambda(c) = 3.0 +/- 1.5, we find that Barnard 1 is a supercritical molecular cloud with a magnetic field nearly dominated by its turbulent component.
WOS关键词GOULD BELT SURVEY ; RADIATIVE TORQUES ; INTERSTELLAR GRAINS ; MOLECULAR CLOUDS ; POLARIZATION MEASUREMENTS ; INFRARED POLARIMETRY ; LINEAR-POLARIZATION ; H2O MASERS ; SCUBA-2 ; ALIGNMENT
资助项目Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Science, ICT & Future Planning[NRF-2015R1C1A1A01052160] ; Basic Science Research Program through the National Research Foundation of Korea[NRF-2016R1C1B2013642] ; Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Education, Science and Technology[NRF-2016R1A2B4012593] ; National Key R&D Program of China[2017YFA0402600] ; National Key R&D Program of China[2017YFA0402700] ; National Natural Science Foundation of China (NSFC)[U1731237] ; National Natural Science Foundation of China (NSFC)[11473011] ; National Natural Science Foundation of China (NSFC)[11590781] ; National Natural Science Foundation of China (NSFC)[11629302] ; National Natural Science Foundation of China (NSFC)[11725313] ; National Aeronautics and Space Administration[NNA17BF53C] ; Science and Technology Facilities Council of the United Kingdom ; Canada Foundation for Innovation ; Canadian Space Agency ; East Asian Observatory
WOS研究方向Astronomy & Astrophysics
语种英语
出版者IOP PUBLISHING LTD
WOS记录号WOS:000469801600006
资助机构Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Science, ICT & Future Planning ; Basic Science Research Program through the National Research Foundation of Korea ; Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Education, Science and Technology ; National Key R&D Program of China ; National Natural Science Foundation of China (NSFC) ; National Aeronautics and Space Administration ; Science and Technology Facilities Council of the United Kingdom ; Canada Foundation for Innovation ; Canadian Space Agency ; East Asian Observatory
源URL[http://ir.xao.ac.cn/handle/45760611-7/2780]  
专题恒星形成与演化研究团组
通讯作者Coude, Simon
作者单位1.European Southern Observ ESO, Karl Schwarzschild Str 2, D-85748 Garching, Germany
2.Chinese Acad Sci, Purple Mt Observ, 2 West Beijing Rd, Nanjing 210008, Jiangsu, Peoples R China
3.Kwansei Gakuin Univ, Sch Sci & Technol, Dept Phys, 2-1 Gakuen, Sanda, Hyogo 6691337, Japan
4.UCL, Phys & Astron Dept, OSL, London WC1E 6BT, England
5.Tokyo Gakugei Univ, Dept Astron & Earth Sci, Koganei, Tokyo 1848501, Japan
6.Univ Grenoble Alpes, CNRS, IPAG, F-38000 Grenoble, France
7.Univ Cambridge, Kavli Inst Cosmol, Inst Astron, Madingley Rd, Cambridge CB3 0HA, England
8.Cavendish Lab, Astrophys Grp, J J Thomson Ave, Cambridge CB3 0HE, England
9.Kagoshima Univ, 1-21-35 Korimoto, Kagoshima, Kagoshima 8900065, Japan
10.Grad Univ Adv Studies, SOKENDAI, Hayama, Kanagawa 2400193, Japan
推荐引用方式
GB/T 7714		 Zhu, Lei,Zhou, Jianjun,Zhang, Guoyin,et al. The JCMT BISTRO Survey: The Magnetic Field of the Barnard 1 Star-forming Region[J]. ASTROPHYSICAL JOURNAL,2019,877(2):17.
APA Zhu, Lei.,Zhou, Jianjun.,Zhang, Guoyin.,Zhang, Chuan-Peng.,Zenko, Tetsuya.,...&Coude, Simon.(2019).The JCMT BISTRO Survey: The Magnetic Field of the Barnard 1 Star-forming Region.ASTROPHYSICAL JOURNAL,877(2),17.
MLA Zhu, Lei,et al."The JCMT BISTRO Survey: The Magnetic Field of the Barnard 1 Star-forming Region".ASTROPHYSICAL JOURNAL 877.2(2019):17.

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