Fig. 6
Left panels: temperature (gray) and density (blue) profiles for the IRAS2A envelope from Kristensen et al. (2012) (top), and the corresponding H2O (light blue), CO (blue), and HCO+ (purple) abundances predicted by the GRAINOBLE model (bottom). The dashed green line shows the empirically inferred abundance profile for H13CO+ (scaled down by a factor 100). Right panels: as left panels, but with the temperature increased by a factor 2.2. The vertical dotted lines indicate the H2 O and CO snowlines.
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