Toward a robust physical and chemical characterization of heterogeneous lines of sight: The case of the Horsehead nebula

Open Access

Fig. H.3

Joint histograms of the column densities, their abundances, or their ratios as a function of the visual extinction for the studied species. The dashed vertical lines mark the G₀/A_V values at 1.5, 4.75, and 15 ISRF/ mag. The remainder of the figure layout is identical to Fig. 14.

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