Fig. 8
G0, nH, and G0 ∕nH according to distances to the star for the model. G0 is the average of G0 values between 25 and 75% of the total emission at 3.3 μm seen by the observer (Fig. 7, top panel). Idem for nH (middle panel) and G0/nH (bottom panel). The width of the line is for the standard dispersion of the values. 1∕d2 (dotted black line) is also plotted in the top panel.
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