The JCMT BISTRO-2 survey: magnetic fields of the massive DR21 filament

Ching, Tao-Chung, Qiu, Keping, Li, Di, Ren, Zhiyuan, Lai, Shih-Ping, Berry, David, Pattle, Kate, Furuya, Ray, Ward-Thompson, Derek ORCID: https://orcid.org/0000-0003-1140-2761, Johnstone, Doug, Koch, Patrick M., Lee, Chang Won, Hoang, Thiem, Hasegawa, Tetsuo, Kwon, Woojin, Bastien, Pierre, Eswaraiah, Chakali, Wang, Jia-Wei, Kim, Kyoung Hee, Hwang, Jihye, Soam, Archana, Lyo, A-Ran, Liu, Junhao, Le Gouellec, Valentin J. M., Arzoumanian, Doris, Whitworth, Anthony ORCID: https://orcid.org/0000-0002-1178-5486, Francesco, James Di, Poidevin, Frédérick, Liu, Tie, Coudé, Simon, Tahani, Mehrnoosh, Liu, Hong-Li, Onaka, Takashi, Li, Dalei, Tamura, Motohide, Chen, Zhiwei, Tang, Xindi, Kirchschlager, Florian, Bourke, Tyler L., Byun, Do-Young, Chen, Mike, Chen, Huei-Ru Vivien, Chen, Wen Ping, Cho, Jungyeon, Choi, Yunhee, Choi, Youngwoo, Choi, Minho, Chrysostomou, Antonio, Chung, Eun Jung, Dai, Y. Sophia, Diep, Pham Ngoc, Doi, Yasuo, Duan, Yan, Duan, Hao-Yuan, Eden, David, Fanciullo, Lapo, Fiege, Jason, Fissel, Laura M., Franzmann, Erica, Friberg, Per, Friesen, Rachel, Fuller, Gary, Gledhill, Tim, Graves, Sarah, Greaves, Jane ORCID: https://orcid.org/0000-0002-3133-413X, Griffin, Matt ORCID: https://orcid.org/0000-0002-0033-177X, Gu, Qilao, Han, Ilseung, Hayashi, Saeko, Houde, Martin, Hull, Charles L. H., Inoue, Tsuyoshi, Inutsuka, Shu-ichiro, Iwasaki, Kazunari, Jeong, Il-Gyo, Könyves, Vera, Kang, Ji-hyun, Kang, Miju, Karoly, Janik, Kataoka, Akimasa, Kawabata, Koji, Kemper, Francisca, Kim, Jongsoo, Kim, Mi-Ryang, Kim, Shinyoung, Kim, Hyosung, Kim, Kee-Tae, Kim, Gwanjeong, Kirk, Jason, Kobayashi, Masato I. N., Kusune, Takayoshi, Kwon, Jungmi, Lacaille, Kevin, Law, Chi-Yan, Lee, Sang-Sung, Lee, Hyeseung, Lee, Jeong-Eun, Lee, Chin-Fei, Lee, Yong-Hee, Li, Guangxing, Li, Hua-bai, Lin, Sheng-Jun, Liu, Sheng-Yuan, Lu, Xing, Mairs, Steve, Matsumura, Masafumi, Matthews, Brenda, Moriarty-Schieven, Gerald, Nagata, Tetsuya, Nakamura, Fumitaka, Nakanishi, Hiroyuki, Ngoc, Nguyen Bich, Ohashi, Nagayoshi, Park, Geumsook, Parsons, Harriet, Peretto, Nicolas ORCID: https://orcid.org/0000-0002-6893-602X, Priestley, Felix, Pyo, Tae-Soo, Qian, Lei, Rao, Ramprasad, Rawlings, Mark, Rawlings, Jonathan, Retter, Brendan, Richer, John, Rigby, Andrew, Sadavoy, Sarah, Saito, Hiro, Savini, Giorgio, Seta, Masumichi, Shimajiri, Yoshito, Shinnaga, Hiroko, Tang, Ya-Wen, Tomisaka, Kohji, Tram, Le Ngoc, Tsukamoto, Yusuke, Viti, Serena, Wang, Hongchi, Wu, Jintai, Xie, Jinjin, Yang, Meng-Zhe, Yen, Hsi-Wei, Yoo, Hyunju, Yuan, Jinghua, Yun, Hyeong-Sik, Zenko, Tetsuya, Zhang, Chuan-Peng, Zhang, Yapeng, Zhang, Guoyin, Zhou, Jianjun, Zhu, Lei, de Looze, Ilse, André, Philippe, Dowell, C. Darren, Eyres, Stewart, Falle, Sam, Robitaille, Jean-François and van Loo, Sven 2022. The JCMT BISTRO-2 survey: magnetic fields of the massive DR21 filament. Astrophysical Journal 941 , 122. 10.3847/1538-4357/ac9dfb

PDF - Published Version Available under License Creative Commons Attribution. Download (3MB)

Abstract

We present 850 μm 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 ∼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.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Physics and Astronomy
Additional Information:	License information from Publisher: LICENSE 1: URL: http://creativecommons.org/licenses/by/4.0/, Type: cc-by
Publisher:	American Astronomical Society
ISSN:	0004-637X
Date of First Compliant Deposit:	22 December 2022
Date of Acceptance:	25 October 2022
Last Modified:	07 May 2023 05:15
URI:	https://orca.cardiff.ac.uk/id/eprint/155108

Actions (repository staff only)

Edit Item