The JCMT BISTRO Survey: An 850/450 mu m Polarization Study of NGC 2071IR in Orion B
文献类型：期刊论文
| 作者 | Lyo, A-Ran84; Kim, Jongsoo83,84; Sadavoy, Sarah82; Johnstone, Doug80,81; Berry, David79; Pattle, Kate78; Kwon, Woojin76,77; Bastien, Pierre74,75; Onaka, Takashi72,73; Di Francesco, James80,81 |
| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 2021-09-01 |
| 卷号 | 918期号:2页码:17 |
| ISSN号 | 0004-637X |
| DOI | 10.3847/1538-4357/ac0ce9 |
| 通讯作者 | Lyo, A-Ran() |
| 英文摘要 | We present the results of simultaneous 450 mu m and 850 mu m polarization observations toward the massive star-forming region NGC 2071IR, a target of the BISTRO (B-fields in STar-forming Region Observations) Survey, using the POL-2 polarimeter and SCUBA-2 camera mounted on the James Clerk Maxwell Telescope. We find a pinched magnetic field morphology in the central dense core region, which could be due to a rotating toroidal disklike structure and a bipolar outflow originating from the central young stellar object IRS 3. Using the modified Davis-Chandrasekhar-Fermi method, we obtain a plane-of-sky magnetic field strength of 563 +/- 421 mu G in the central similar to 0.12 pc region from 850 mu m polarization data. The corresponding magnetic energy density of 2.04 x 10(-8) erg cm(-3) is comparable to the turbulent and gravitational energy densities in the region. We find that the magnetic field direction is very well aligned with the whole of the IRS 3 bipolar outflow structure. We find that the median value of polarization fractions is 3.0% at 450 mu m in the central 3 ' region, which is larger than the median value of 1.2% at 850 mu m. The trend could be due to the better alignment of warmer dust in the strong radiation environment. We also find that polarization fractions decrease with intensity at both wavelengths, with slopes, determined by fitting a Rician noise model of 0.59 +/- 0.03 at 450 mu m and 0.36 +/- 0.04 at 850 mu m, respectively. We think that the shallow slope at 850 mu m is due to grain alignment at the center being assisted by strong radiation from the central young stellar objects. |
| WOS关键词 | FAR-INFRARED POLARIZATION ; FORMING MOLECULAR CLOUDS ; GOULD BELT SURVEY ; MAGNETIC-FIELDS ; SUBMILLIMETER POLARIZATION ; IMAGING POLARIMETRY ; BIPOLAR OUTFLOW ; STAR-FORMATION ; SCUBA-2 ; CORES |
| 资助项目 | National Key R&D Program of China[2017YFA0402700] ; National Key R&D Program of China[2017YFA0402600] ; Science and Technology Facilities Council of the United Kingdom ; universities in the United Kingdom, Canada, and Ireland ; Canada Foundation for Innovation ; National Research Council of Canada ; Natural Sciences and Engineering Research Council of Canada (NSERC) ; NSF[AST-1715876] ; Seoul National University ; Ministry of Science and Technology of Taiwan[MoST107-2119-M-001-031-MY3] ; Academia Sinica[AS-IA-106-M03] ; NAOJ Fellowship ; JSPS KAKENHI[18K13586] ; JSPS KAKENHI[20K14527] ; Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Education, Science and Technology[NRF-2019R1A2C1010851] ; Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Education[NRF-2020R1A6A3A01100208] ; National Natural Science Foundation of China (NSFC)[U1731237] |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| 出版者 | IOP PUBLISHING LTD |
| WOS记录号 | WOS:000695703000001 |
| 资助机构 | National Key R&D Program of China ; Science and Technology Facilities Council of the United Kingdom ; universities in the United Kingdom, Canada, and Ireland ; Canada Foundation for Innovation ; National Research Council of Canada ; Natural Sciences and Engineering Research Council of Canada (NSERC) ; NSF ; Seoul National University ; Ministry of Science and Technology of Taiwan ; Academia Sinica ; NAOJ Fellowship ; JSPS KAKENHI ; Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Education, Science and Technology ; Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Education ; National Natural Science Foundation of China (NSFC) |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/4267]  |
| 专题 | 研究单元未命名 |
| 通讯作者 | Lyo, A-Ran |
| 作者单位 | 1.Univ Leeds, Sch Phys & Astron, Woodhouse Lane, Leeds LS2 9JT, W Yorkshire, England 2.Univ Grenoble Alpes, IPAG, CNRS, F-38000 Grenoble, France 3.Univ Leeds, Dept Appl Math, Woodhouse Lane, Leeds LS2 9JT, W Yorkshire, England 4.Beijing Normal Univ, Dept Astron, Beijing 100875, Peoples R China 5.UCL, Phys & Astron Dept, London WC1E 6BT, England 6.Univ Sci & Technol Hanoi, Vietnam Acad Sci & Technol, 18 Hoang Quoc Viet, Hanoi, Vietnam 7.Natl Res Council Canada, Herzberg Astron & Astrophys Res Ctr, Dominion Radio Astrophys Observ, POB 248, Penticton, BC V2A 6J9, Canada 8.Kwansei Gakuin Univ, Sch Sci & Technol, Dept Phys, 2-1 Gakuen, Sanda, Hyogo 6691337, Japan 9.UCL, Phys & Astron Dept, OSL, London WC1E 6BT, England 10.Univ Tsukuba, Fac Pure & Appl Sci, 1-1-1 Tennodai, Tsukuba, Ibaraki 3058577, Japan |
| 推荐引用方式 GB/T 7714 | Lyo, A-Ran,Kim, Jongsoo,Sadavoy, Sarah,et al. The JCMT BISTRO Survey: An 850/450 mu m Polarization Study of NGC 2071IR in Orion B[J]. ASTROPHYSICAL JOURNAL,2021,918(2):17. |
| APA | Lyo, A-Ran.,Kim, Jongsoo.,Sadavoy, Sarah.,Johnstone, Doug.,Berry, David.,...&van Loo, Sven.(2021).The JCMT BISTRO Survey: An 850/450 mu m Polarization Study of NGC 2071IR in Orion B.ASTROPHYSICAL JOURNAL,918(2),17. |
| MLA | Lyo, A-Ran,et al."The JCMT BISTRO Survey: An 850/450 mu m Polarization Study of NGC 2071IR in Orion B".ASTROPHYSICAL JOURNAL 918.2(2021):17. |
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