Fig. 10.
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Scatter plot of the observed polarisation fraction PF as a function of gas column density in NGC253. Band 4 data are shown on top panel, Band 7 in the bottom panel. The black line shows the trend derived from a fit to our data (see Eq. (8)). The yellow stars in the bottom panel indicate values computed at the location of the 14 SSCs (see Fig. 4).
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