Late gas released in the young Kuiper belt could have significantly contributed to the carbon enrichment of the atmospheres of Neptune and Uranus

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Fig. 2

Estimations of the contribution of late gas to the atmospheric [C/H] ratios for Jupiter (J), Saturn (S), Uranus (U), and Neptune (N) calculated from the observed [C/H] and [S/H] (see Section 3.1.1). The crosses show the mean values and the bars show the uncertainties. We note that the minimal values go to zero.

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