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Fig. 3


Comparison of the DustEM output parameters for the H ii regions in our sample using a 4 Myr star cluster ISRF and a Mathis ISRF. Top left: scale factor of the ISRF intensity, top right: YVSG, bottom left: YBG, and bottom right: YPAH. The continuous line corresponds to the linear fit to the data and the dashed line is the one-to-one relation. The colour code corresponds to the morphology of the region classified in Paper I: blue circles are filled regions, green squares mixed ones, and red triangles shells or clear shells.

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