Fig. 9

Upper panel: column density distribution of molecular hydrogen for a prestellar core extracted from the StarFormat database. Black and white contours show 30, 50, 70, and 95 per cent of the H2 column density peak and of the 850-μm dust emission (Stokes I) peak, respectively. The scale bar to the right gives N(H2) in logarithmic scale. Lower panel: polarisation map for the core depicted in the upper panel (rmodel = 2.8 × 104 AU). The scale bar to the right gives Ip in Jy/( beam) and it refers to the coloured map which has been debiased for values below 3σ. Magenta contours show 30, 50, 70, and 95 per cent of the 850-μm dust emission (Stokes I) peak; white vectors show the direction of the magnetic field. The synthesised beam is shown in the lower left corner.
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