A Tale of Three: Magnetic Fields along the Orion Integral-shaped Filament as Revealed by the JCMT BISTRO Survey

作者：Jintai Wu, Keping Qiu, F. Poidevin, Pierre Bastien, Junhao Liu, Tao-Chung Ching, Tyler L. Bourke, D. Ward–Thompson, Kate Pattle, Doug Johnstone, Patrick M. Koch, D. Arzoumanian, Chang Won Lee, Lapo Fanciullo, Takashi Onaka, Jihye Hwang, Valentin J. M. Le Gouellec, Archana Soam, Motohide Tamura, Mehrnoosh Tahani, Chakali Eswaraiah, Hua-bai Li, David Berry, Ray S. Furuya, Simon Coudé, Woojin Kwon, Sheng-Jun Lin, Jia-Wei Wang, Tetsuo Hasegawa, S. Lai, Do‐Young Byun, Zhiwei Chen, Huei-Ru Vivien Chen, Wen-Ping Chen, Mike Chen, Jungyeon Cho, Young-Woo Choi, Yunhee Choi, Minho Choi, Antonio Chrysostomou, Eun Jung Chung, Sophia Dai, James Di Francesco, Pham Ngoc Diep, Yasuo Doi, Hao-Yuan Duan, Yan Duan, David Eden, Jason Fiege, Laura M. Fissel, Erica Franzmann, Per Friberg, Rachel Friesen, G. A. Fuller, T. M. Gledhill, Sarah Graves, J. S. Greaves, Matt Griffin, Qilao Gu, Ilseung Han, Saeko S. Hayashi, Thiem Hoang, Martin Houde, Tsuyoshi Inoue, Shu‐ichiro Inutsuka, K. Iwasaki, Il-Gyo Jeong, V. Könyves, Ji‐hyun Kang, Miju Kang, Janik Karoly, Akimasa Kataoka, Koji S. Kawabata, Shinyoung Kim, Mi-Ryang Kim, Kyoung Hee Kim, Kee‐Tae Kim, Jongsoo Kim, Hyosung Kim, Gwanjeong Kim, Florian Kirchschlager, J. M. Kirk, Masato I. N. Kobayashi, Takayoshi Kusune, Jungmi Kwon, Kevin Lacaille, Chi-Yan Law, Hyeseung Lee, Chin‐Fei Lee, Sang-Sung Lee, Jeong‐Eun Lee, Dalei Li, Di Li, Guang-Xing Li, Sheng‐Yuan Liu, Tie Liu, Hongli Liu, Xing Lu, A-Ran Lyo, Steve Mairs, M. Matsumura, Brenda C. Matthews, G. H. Moriarty‐Schieven, Tetsuya Nagata, Fumitaka Nakamura, Hiroyuki Nakanishi, Nguyen Bich Ngoc, Nagayoshi Ohashi, Geumsook Park, Harriet Parsons, N. Peretto, F D Priestley, Tae‐Soo Pyo, Lei Qian, Ramprasad Rao, J. M. C. Rawlings, Mark G. Rawlings, Brendan Retter, John Richer, A. J. Rigby, Sarah Sadavoy, Hiro Saito, G. Savini, Masumichi Seta, Ekta Sharma, Yoshito Shimajiri, Hiroko Shinnaga, Ya‐Wen Tang, Xindi Tang, D. Hoang, Kohji Tomisaka, Le Ngoc Tram, Yusuke Tsukamoto, S. Viti, Hongchi Wang, A. P. Whitworth, Jinjin Xie, Meng-Zhe Yang, Hsi-Wei Yen, Hyunju Yoo, Jinghua Yuan, Hyeong-Sik Yun, Tetsuya Zenko, Guoyin Zhang, Chuan-Peng Zhang, Yapeng Zhang, Jianjun Zhou, Lei Zhu, Ilse De Looze, P. André, C. D. Dowell, S. P. S. Eyres, S. A. E. G. Falle, Jean‐François Robitaille, S. Van Loo · 发表于：The Astrophysical Journal Letters · 年份：2024 · DOI：10.3847/2041-8213/ad93d2 · 被引用次数：6 · 研究领域：Astrophysics and Star Formation Studies、Stellar, planetary, and galactic studies、Astro and Planetary Science

Abstract As part of the B -fields In Star-forming Region Observations survey, we present James Clerk Maxwell Telescope (JCMT) 850 μ m polarimetric observations toward the Orion integral-shaped filament (ISF) that covers three portions known as OMC-1, OMC-2, and OMC-3. The magnetic field threading the ISF seen in the JCMT POL-2 map appears as a tale of three: pinched for OMC-1, twisted for OMC-2, and nearly uniform for OMC-3. A multiscale analysis shows that the magnetic field structure in OMC-3 is very consistent at all the scales, whereas the field structure in OMC-2 shows no correlation across different scales. In OMC-1, the field retains its mean orientation from large to small scales but shows some deviations at small scales. Histograms of relative orientations between the magnetic field and filaments reveal a bimodal distribution for OMC-1, a relatively random distribution for OMC-2, and a distribution with a predominant peak at 90 ∘ for OMC-3. Furthermore, the magnetic fields in OMC-1 and OMC-3 both appear to be aligned perpendicular to the fibers, which are denser structures within the filament, but the field in OMC-2 is aligned along with the fibers. All these suggest that gravity, turbulence, and magnetic field are each playing a leading role in OMC-1, 2, and 3, respectively. While OMC-2 and 3 have almost the same gas mass, density, and nonthermal velocity dispersion, there are on average younger and fewer young stellar objects in OMC-3, providing evidence that a str...