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Fig. 3
Time evolution of the gas phase abundance of H2O relative to all gas for disc #1 (Σ0 = 95.8 g cm-2, acore = 46 AU, γ = 0.9). The plot is shown for CO/H2O = 0.2 and without irradiation. Note that the 100 000 yr curve is set to zero since H2O has disappeared from the disc by this time.
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