Efficiency of radial transport of ices in protoplanetary disks probed with infrared observations: the case of CO2

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Fig. 8

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2D CO₂ abundance distribution from the model with an abundance floor of 10⁻⁹. Black and white lines show the regions where 25% and 75% of the emission of respectively ¹² CO ₂ and ¹³ CO₂ is emitted from. The ¹³CO₂ emission is more concentrated around the region with the abundance enhancement.

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