Fig. 7
Maps of the dust opacity derived from the comparison of the NIR extinction maps and SED fits with a fixed value of the spectral index, β = 2.0. The values are given for 250 μm and relative to the total ISM mass. The contours are drawn starting with the value of 0.05 cm2 g-1 and with a step of 0.02 cm2 g-1 (PCC550) or 0.03 cm2 g-1 (PCC288 and PCC249).
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