Fig. 4

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Resulting temperatures and chemical concentrations as a function of vertical hydrogen column density N〈H〉, for radial distances 1 au, 10 au, and 100 au, from left to right. The top row shows the gas and dust temperatures, the second row the main hydrogen species, the third row the oxygen chemistry, and the last row the carbon chemistry. Only a few selected species are plotted. In each part of the figure, the various dashed and dotted lines correspond to the mixing parameter αmix, as explained in the legends.
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