Blowups from the NIR-derived column density map of the Musca cloud (Fig. 2). The contours start at NH = 1.5 × 1021 cm-2 and the step is 1.5 × 1021 cm-2. The lowest contour is drawn with a dotted line. The dashed lines in the Center region indicate the 1.6 pc velocity-coherent filament whose radial structure is modeled in Sect. 3.2. The numbered signs refer to the fragments identified within the cloud (see Sect. 3.1).
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