Open Access

Fig. 4


D/H abundance ratios of ammonia (left column), (middle column), and water (right column), at a medium density of n(H2) = 104 cm−3 (top row), n(H2) = 105 cm−3 (middle row), and n(H2) = 106 cm−3 (bottom row). The abundances represent sums over the spin states where applicable. Solid lines represent the FS model, while dashed lines represent the PH model.

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.