Backlighting young stellar objects in the Central Molecular Zone - An ensemble-averaged abundance structure of methanol ices

Open Access

Fig. 7

Methanol-ice column densities against foreground extinction estimates ( $A_{K}^{M I R}$ $Mathematical equation: $\akmid$$ and A^*_K in the top and middle panels) and water-ice column densities (bottom panel). The solid line in the top and middle panels shows the empirical relation for local clouds from Whittet et al. (2011), shifted horizontally by the average CMZ foreground extinction (∆A_K = 2.2 mag).

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