Panel a: near-IR polarization segments plotted over a ~20′× 20′ R-band DSS image of the field containing [OMK2002]18. A 10% polarization segment is drawn for reference in the lower left corner. Only the segments with P∕σp ≥ 3 are plotted. Panel b: sub-mm polarization segments of [OMK2002]18, plotted over a 20″ × 20″ grid. Contours correspond to JCMT/SCUBA 850 μm dust continuum emissions from 0.05 to 0.25 Jy beam−1, with intervals of 0.05 Jy beam−1 (Matthews et al. 2009; ©AAS, reproduced with permission). Only segments with P∕σp ≥ 2 are plotted. The near-IR polarization is strong and well ordered, indicating dominant magnetic fields on scales of 104 –105 au (~ 0.05–0.5pc) in the western region of the globule.
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