Open Access

Fig. 4

image

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.

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