期刊
ASTROPHYSICAL JOURNAL LETTERS
卷 912, 期 2, 页码 -出版社
IOP Publishing Ltd
DOI: 10.3847/2041-8213/abeb1c
关键词
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资金
- National Natural Science Foundation of China (NSFC) [11988101, 11725313, U1931117, U1731237]
- International Partnership Program of Chinese Academy of Sciences [114A11KYSB20160008]
- Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Education, Science and Technology [NRF-2019R1A2C1010851]
- Ministry of Science and Technology (MOST) in Taiwan [MOST 109-2112-M-001-051]
- NAOJ Fellowship
- JSPS KAKENHI [18K13586, 20K14527]
- New Faculty Startup Fund from Seoul National University
- National Research Council of Canada
- NSF [1715876]
- center for Women In Science, Engineering and Technology (WISET) - Ministry of Science and ICT (MSIT) [WISET-2019-288, WISET-2020-247]
- Vietnam National Foundation for Science and Technology Development (NAFOSTED) [103.99-2019.368]
- [MOST 108-2112-M-001-004-MY2]
- Direct For Mathematical & Physical Scien
- Division Of Astronomical Sciences [1715876] Funding Source: National Science Foundation
Sensitive dust continuum polarization observations at 850 μm in the B213 region of Taurus were obtained 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. The observations allowed for probing of the magnetic field (B-field) at high spatial resolution in two protostellar cores (K04166 and K04169) and one prestellar core (Miz-8b) within the B213 filament, revealing distinct mean B-field orientations for each core.
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 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 (similar to 2000 au or similar to 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 mu G, 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.
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