An analogous plot to Figure 3 in the paper, which shows oxygen ion-by-ion cooling and photo-heating, but here for the 7 carbon ions in solar abundance gas. See the caption in the paper, or for the analogous primordial plot on this website for a description. Slight deviations of very low ionisation fractions for low ions below T=10⁴ K cause slight deviations at low temperatures versus CLOUDY. Elsewhere the agreement with CLOUDY is excellent.

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