The JCMT BISTRO Survey: Revealing the Diverse Magnetic Field Morphologies in Taurus Dense Cores with Sensitive Submillimeter Polarimetry
Authors: Eswaraiah Chakali , Li Di , Furuya Ray S. , Hasegawa Tetsuo , Ward-Thompson Derek , Qiu Keping , Ohashi Nagayoshi , Pattle Kate , Sadavoy Sarah , Hull Charles L. H. , Berry David , Doi Yasuo , Ching Tao-Chung , Lai Shih-Ping , Wang Jia-Wei , Koch Patrick M. , Kwon Jungmi , Kwon Woojin , Bastien Pierre , Arzoumanian Doris , Coudé Simon , Soam Archana , Fanciullo Lapo , Yen Hsi-Wei , Liu Junhao , Hoang Thiem , Ping Chen Wen , Shimajiri Yoshito , Liu Tie , Chen Zhiwei , Li Hua-bai , Lyo A-Ran , Hwang Jihye , Johnstone Doug , Rao Ramprasad , Bich Ngoc Nguyen , Ngoc Diep Pham , Mairs Steve , Parsons Harriet , Tamura Motohide , Tahani Mehrnoosh , Vivien Chen Huei-Ru , Nakamura Fumitaka , Shinnaga Hiroko , Tang Ya-Wen , Cho Jungyeon , Won Lee Chang , Inutsuka Shu-ichiro , Inoue Tsuyoshi , Iwasaki Kazunari , Qian Lei , Xie Jinjin , Li Dalei , Liu Hong-Li , Zhang Chuan-Peng , Chen Mike , Zhang Guoyin , Zhu Lei , Zhou Jianjun , André Philippe , Liu Sheng-Yuan , Yuan Jinghua , Lu Xing , Peretto Nicolas , Bourke Tyler L. , Byun Do-Young , Dai Sophia , Duan Yan , Duan Hao-Yuan , Eden David , Matthews Brenda , Fiege Jason , Fissel Laura M. , Kim Kee-Tae , Lee Chin-Fei , Kim Jongsoo , Pyo Tae-Soo , Choi Yunhee , Choi Minho , Chrysostomou Antonio , Jung Chung Eun , Ngoc Tram Le , Franzmann Erica , Friberg Per , Friesen Rachel , Fuller Gary , Gledhill Tim , Graves Sarah , Greaves Jane , Griffin Matt , Gu Qilao , Han Ilseung , Hatchell Jennifer , Hayashi Saeko , Houde Martin , Kawabata Koji , Jeong Il-Gyo , Kang Ji-hyun , Kang Sung-ju , Kang Miju , Kataoka Akimasa , Kemper Francisca , Rawlings Mark , Rawlings Jonathan , Retter Brendan , Richer John , Rigby Andrew , Saito Hiro , Savini Giorgio , Scaife Anna , Seta Masumichi , Kim Gwanjeong , Hee Kim Kyoung , Kim Mi-Ryang , Kirchschlager Florian , Kirk Jason , Kobayashi Masato I. N. , Konyves Vera , Kusune Takayoshi , Lacaille Kevin , Law Chi-Yan , Lee Sang-Sung , Lee Yong-Hee , Matsumura Masafumi , Moriarty-Schieven Gerald , Nagata Tetsuya , Nakanishi Hiroyuki , Onaka Takashi , Park Geumsook , Tang Xindi , Tomisaka Kohji , Tsukamoto Yusuke , Viti Serena , Wang Hongchi , Whitworth Anthony , Yoo Hyunju , Yun Hyeong-Sik , Zenko Tetsuya , Zhang Yapeng , de Looze Ilse , Dowell C. Darren , Eyres Stewart , Falle Sam , Robitaille Jean-François , van Loo Sven 
Published: May 2021

Abstract
We have obtained sensitive dust continuum polarization observations at 850 μm in the B213 region of Taurus using POL-2 on SCUBA-2 at the James Clerk Maxwell Telescope as part of the B-fields in STar-forming Region Observations (BISTRO) survey. These observations allow us to probe magnetic field (B-field) at high spatial resolution (∼2000 au or ∼0.01 pc at 140 pc) in two protostellar cores (K04166 and K04169) and one prestellar core (Miz-8b) that lie within the B213 filament. Using the Davis–Chandrasekhar–Fermi method, we estimate the B-field strengths in K04166, K04169, and Miz-8b to be 38 ± 14, 44 ± 16, and 12 ± 5 μG, respectively. These cores show distinct mean B-field orientations. The B-field in K04166 is well ordered and aligned parallel to the orientations of the core minor axis, outflows, core rotation axis, and large-scale uniform B-field, in accordance with magnetically regulated star formation via ambipolar diffusion taking place in K04166. The B-field in K04169 is found to be ordered but oriented nearly perpendicular to the core minor axis and large-scale B-field and not well correlated with other axes. In contrast, Miz-8b exhibits a disordered B-field that shows no preferred alignment with the core minor axis or large-scale field. We found that only one core, K04166, retains a memory of the large-scale uniform B-field. The other two cores, K04169 and Miz-8b, are decoupled from the large-scale field. Such a complex B-field configuration could be caused by gas inflow onto the filament, even in the presence of a substantial magnetic flux.