Fig. 10
Download original image
Evolution of the average deuterium fractionation ratios NH2D/pNH3 and NHD2/NH2D according to the chemistry model. The labelling is the same as in Fig. 5. In the top panel, the shaded area indicates the ratio derived from observations towards H-MM1, where the fractional pNH3 abundance has been determined by Pineda et al. (2022). In the bottom panel, the “observed” ratios include both H-MM1 and Oph D.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.