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.

我们使用詹姆斯克拉克麦克斯韦望远镜的 SCUBA-2 上的 POL-2 获得了金牛座 B213 区域850微米的敏感尘埃连续偏振观测，作为恒星形成区域观测 (BISTRO) 调查中B场的一部分。这些观测使我们能够以高空间分辨率（~2000 au 或~0.01 pc at 140 pc）探测位于其中的两个原恒星核心（K04166 和 K04169）和一个前恒星核心（Miz-8b）中的磁场（B场）。 B213 灯丝。使用 Davis-Chandrasekhar-Fermi 方法，我们估计K04166、K04169 和 Miz-8b 中的B 场强度分别为 38 14、44 16 和 12 5 μ G。这些核心显示不同的平均B-场方向。K04166 中的B场有序排列，平行于核心短轴、外流、核心旋转轴和大规模均匀B 场的方向，这与K04166 中发生的双极扩散磁调节恒星形成一致. 发现 K04169 中的B场是有序的，但方向几乎垂直于核心短轴和大尺度B 场，并且与其他轴没有很好的相关性。相比之下，Miz-8b 表现出无序的B 场，表明与核心短轴或大尺度场没有优先对齐。我们发现只有一个核 K04166 保留了大规模均匀B的记忆-场地。另外两个核心，K04169和Miz-8b，与大规模领域解耦。这种复杂的B 场配置可能是由气体流入灯丝引起的，即使在存在大量磁通量的情况下也是如此。