PDRs4All - XIX. The evolution of the PAH ionisation and PAH size distribution across the Orion Bar

Open Access

Fig. 11

Correlation between the I_3.3/I_11.2 PAH size proxy and $\bar{N_{C}}$ $Mathematical equation: $\overline{{N}_{C}}$$ deduced from pyPAHdb modelling for the five key physical regions. Equidistant contours are drawn up to 3 sigma from the mean value in each template region. Contour labels indicate pixel density, i.e. points per I_3.3/I_11.2 per $\bar{N_{C}}$ $Mathematical equation: $\overline{{N}_{C}}$$ . Region means within 3 standard errors of the mean uncertainty are shown.

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