The JCMT BISTRO-2 Survey: Magnetic Fields of the Massive DR21 Filament
文献类型：期刊论文
| 作者 | Ching, Tao-Chung3,52; Qiu, Keping50,51; Li, Di48,49,52; Ren, Zhiyuan52; Lai, Shih-Ping46,47; Berry, David45; Pattle, Kate44; Furuya, Ray42,43; Ward-Thompson, Derek41; Johnstone, Doug39,40 |
| 刊名 | Astrophysical Journal
 |
| 出版日期 | 2022-12-22 |
| 卷号 | 941期号:2页码:21122 |
| ISSN号 | 0004-637X |
| 关键词 | far-infrared polarimetry star-forming regions gould belt survey mu-m polarization molecular cloud submillimeter polarization dust emission scuba-2 1st herschel Astronomy & Astrophysics |
| DOI | 10.3847/1538-4357/ac9dfb |
| 产权排序 | 37 |
| 文献子类 | Article |
| 英文摘要 | We present 850 mu m dust polarization observations of the massive DR21 filament from the B-fields In STar-forming Region Observations (BISTRO) survey, using the POL-2 polarimeter and the SCUBA-2 camera on the James Clerk Maxwell Telescope. We detect ordered magnetic fields perpendicular to the parsec-scale ridge of the DR21 main filament. In the subfilaments, the magnetic fields are mainly parallel to the filamentary structures and smoothly connect to the magnetic fields of the main filament. We compare the POL-2 and Planck dust polarization observations to study the magnetic field structures of the DR21 filament on 0.1-10 pc scales. The magnetic fields revealed in the Planck data are well-aligned with those of the POL-2 data, indicating a smooth variation of magnetic fields from large to small scales. The plane-of-sky magnetic field strengths derived from angular dispersion functions of dust polarization are 0.6-1.0 mG in the DR21 filament and similar to 0.1 mG in the surrounding ambient gas. The mass-to-flux ratios are found to be magnetically supercritical in the filament and slightly subcritical to nearly critical in the ambient gas. The alignment between column density structures and magnetic fields changes from random alignment in the low-density ambient gas probed by Planck to mostly perpendicular in the high-density main filament probed by James Clerk Maxwell Telescope. The magnetic field structures of the DR21 filament are in agreement with MHD simulations of a strongly magnetized medium, suggesting that magnetic fields play an important role in shaping the DR21 main filament and subfilaments. |
| 语种 | 英语 |
| WOS记录号 | WOS:000928208700001 |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/5128]  |
| 专题 | 恒星形成与演化研究团组 |
| 作者单位 | 1.Univ. Grenoble Alpes, CNRS, IPAG, F-38000 Grenoble, France; 2.Institut d’Estudis Espacials de Catalunya (IEEC), E-08034 Barcelona, Spain; 3.Research Center for Intelligent Computing Platforms, Zhejiang Lab, Hangzhou 311100, Peopleʼs Republic of China; chingtaochung@gmail.com; 4.Astronomical Institute, Graduate School of Science, Tohoku University, Aoba-ku, Sendai, Miyagi 980-8578, Japan; 5.Department of Physics and Astronomy, McMaster University, Hamilton, ON L8S 4M1, Canada; 6.Department of Physics and Atmospheric Science, Dalhousie University, Halifax B3H 4R2, Canada; 7.Department of Physics, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong; 8.Department of Space, Earth & Environment, Chalmers University of Technology, SE-412 96 Gothenburg, Sweden; 9.School of Space Research, Kyung Hee University, 1732 Deogyeong-daero, Giheung-gu, Yongin-si, Gyeonggi-do 17104, Republic of Korea; 10.Faculty of Education & Center for Educational Development and Support, Kagawa University, Saiwai-cho 1-1, Takamatsu, Kagawa, 760-8522, Japan; |
| 推荐引用方式 GB/T 7714 | Ching, Tao-Chung,Qiu, Keping,Li, Di,et al. The JCMT BISTRO-2 Survey: Magnetic Fields of the Massive DR21 Filament[J]. Astrophysical Journal,2022,941(2):21122. |
| APA | Ching, Tao-Chung.,Qiu, Keping.,Li, Di.,Ren, Zhiyuan.,Lai, Shih-Ping.,...&van Loo, Sven.(2022).The JCMT BISTRO-2 Survey: Magnetic Fields of the Massive DR21 Filament.Astrophysical Journal,941(2),21122. |
| MLA | Ching, Tao-Chung,et al."The JCMT BISTRO-2 Survey: Magnetic Fields of the Massive DR21 Filament".Astrophysical Journal 941.2(2022):21122. |
入库方式： OAI收割
来源：新疆天文台
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。