University of Hertfordshire

From the same journal

From the same journal

  • BISTRO
  • Chakali Eswaraiah
  • Di Li
  • Ray S. Furuya
  • Tetsuo Hasegawa
  • Derek Ward-Thompson
  • Keping Qiu
  • Nagayoshi Ohashi
  • Kate Pattle
  • Sarah Sadavoy
  • Charles L. H. Hull
  • David Berry
  • Yasuo Doi
  • Tao-Chung Ching
  • Shih-Ping Lai
  • Jia-Wei Wang
  • Patrick M. Koch
  • Jungmi Kwon
  • Woojin Kwon
  • Pierre Bastien
  • Doris Arzoumanian
  • Simon Coudé
  • Archana Soam
  • Lapo Fanciullo
  • Hsi-Wei Yen
  • Junhao Liu
  • Thiem Hoang
  • Wen Ping Chen
  • Yoshito Shimajiri
  • Tie Liu
  • Zhiwei Chen
  • Hua-bai Li
  • A-Ran Lyo
  • Jihye Hwang
  • Doug Johnstone
  • Ramprasad Rao
  • Nguyen Bich Ngoc
  • Pham Ngoc Diep
  • Steve Mairs
  • Harriet Parsons
  • Motohide Tamura
  • Mehrnoosh Tahani
  • Huei-Ru Vivien Chen
  • Fumitaka Nakamura
  • Hiroko Shinnaga
  • Ya-Wen Tang
  • Jungyeon Cho
  • Chang Won Lee
  • Shu-ichiro Inutsuka
  • Antonio Chrysostomou
  • Tim Gledhill
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Original languageEnglish
JournalAstrophysical Journal Letters
Publication statusAccepted/In press - 4 Mar 2021

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.

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