학술논문
The JCMT BISTRO Survey: Revealing the Diverse Magnetic Field Morphologies in Taurus Dense Cores with Sensitive Submillimeter Polarimetry
Document Type
Author
Eswaraiah, Chakali; Li, D.; Furuya, Ray S.; Hasegawa, Tetsuo; Ward-Thompson, D.; Qiu, Keping; Ohashi, Nagayoshi; Pattle, Kate; Sadavoy, S. I.; 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; Chen, Wen Ping; Shimajiri, Yoshito; Liu, Tie; Chen, Zhiwei; Li, Hua-Bai; Lyo, A.; Hwang, Jihye; Rao, R.; Bich Ngoc, Nguyen; Diep, Pham Ngoc; Mairs, Steve; Parsons, Harriet; Tamura, Motohide; Tahani, M.; Chen, Huei-Ru Vivien; Nakamura, Fumitaka; Shinnaga, H.; 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, Michael Chun-Yuan; Zhang, Guoyin; Zhu, Lei; Zhou, Jianjun; André, P.; Liu, Sheng-Yuan; Yuan, Jinghua; Lu, X.; Peretto, Nicolas; Bourke, T. L.; Byun, Do Young; Dai, Sophia; Duan, Yan; Duan, Hao-Yuan; Eden, D. J.; Matthews, B. C.; Fiege, J.; Fissel, Laura M.; Kim, Kee-Tae; Lee, Chin-Fei; Kim, Jongsoo; Pyo, Tae-Soo; Choi, Yunhee; Choi, Minho; Chrysostomou, A.; Chung, Eun Jung; Ngoc Tram, Le; Franzmann, Erica; Friberg, P.; Friesen, R.; Fuller, G. A.; Gledhill, T.; Graves, Sarah F.; Greaves, Jane; Griffin, Matt; Gu, Qilao; Han, Ilseung; Hatchell, Jennifer; Hayashi, Saeko; Johnstone, D.; Kawabata, Koji S.; Jeong, Il-Gyo; Kang, Ji-hyun; Kang, Sung-Ju; Kang, Miju; Kataoka, Akimasa; Kemper, F.; Rawlings, M.G.; Rawlings, J. M.C.; Retter, Brendan; Richer, John; Rigby, Andrew; Saito, Hiro; Savini, Giorgio; Scaife, A. M. M.; Seta, Masumichi; Kim, Gwanjeong; Kim, Kyoung Hee; Kim, Mi-Ryang; Kirchschlager, F.; Kirk, J.; Kobayashi, Masato I. N.; Konyves, Vera; Kusune, Takayoshi; Lacaille, Kevin; Law, Chi Yan, 1990; Lee, Sang Sung; Lee, Yong-Hee; Matsumura, Masafumi; Moriarty-Schieven, Gerald H.; Nagata, Tetsuya; Nakanishi, Hiroyuki; Onaka, Takashi; Park, Geumsook; Tang, X. D.; Tomisaka, Kohji; Tsukamoto, Yusuke; Viti, Serena; Wang, Hongchi; Whitworth, Anthony; Yoo, Hyunju; Yun, Hyeong-Sik; Zenko, Tetsuya; Zhang, Yapeng; De Looze, I.; Dowell, C. D.; Eyres, S.; Robitaille, Jean-François; Van Loo, Sven
Source
Astrophysical Journal Letters. 912(2)
Subject
Language
English
ISSN
2041-8213
2041-8205
2041-8205
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.