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Fig. 17

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Spectral fits for the determination of С in the C2 band (top panel), of the 12C to 13C ratio (middle panel), and of N in the CN band (bottom panel). Black lines represent the observational spectrum of HD 76396, blue lines represent the best modelled spectrum with abundances given in the legends, and green and red dotted lines represent modelled spectra with other abundances.

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