Fig. 9

Elemental ratios of carbon, oxygen and nitrogen in gas and ice as a function of radius, at six timesteps: 0.1, 0.5, 1, 2, 5 and 7 Myr. Panel a: C/O ratios. Panel b: C/H ratios. Panel c: O/H ratios. Panel d: N/H ratios. Gas profiles are dashed, ice profiles are solid. The y-axes have different scales, in particular in panel a the y-axis is linear. The grey boxes indicate the radial regions that the iceline of a volatile move over during the evolution.
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