The JCMT BISTRO Survey: Revealing the diverse magnetic field morphologies in Taurus dense cores with sensitive sub-millimeter polarimetry
Author
BISTRO
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
Chen, Wen Ping
Shimajiri, Yoshito
Liu, Tie
Chen, Zhiwei
Li, Hua-bai
Lyo, A-Ran
Hwang, Jihye
Johnstone, Doug
Rao, Ramprasad
Ngoc, Nguyen Bich
Diep, Pham Ngoc
Mairs, Steve
Parsons, Harriet
Tamura, Motohide
Tahani, Mehrnoosh
Chen, Huei-Ru Vivien
Nakamura, Fumitaka
Shinnaga, Hiroko
Tang, Ya-Wen
Cho, Jungyeon
Lee, Chang Won
Inutsuka, Shu-ichiro
Chrysostomou, Antonio
Gledhill, Tim
Attention
2299/26390
Abstract
We have obtained sensitive dust continuum polarization observations at 850 $\mu$m in the B213 region of Taurus using POL-2 on SCUBA-2 at the James Clerk Maxwell Telescope (JCMT), as part of the BISTRO (B-fields in STar-forming Region Observations) survey. These observations allow us to probe magnetic field (B-field) at high spatial resolution ($\sim$2000 au or $\sim$0.01 pc at 140 pc) in two protostellar cores (K04166 and K04169) and one prestellar core (Miz-8b) that lie within the B213 filament. Using the Davis-Chandrasekhar-Fermi method, we estimate the B-field strengths in K04166, K04169, and Miz-8b to be 38$\pm$14 $\mu$G, 44$\pm$16 $\mu$G, and 12$\pm$5 $\mu$G, respectively. These cores show distinct mean B-field orientations. 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. 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 disordered B-field which show 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.