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Fig. 2


Upper panel: dependence of the minimisation parameter S computed for different line lists on the carbon abundance in the atmosphere of Arcturus. The adopted carbon abundance is shown above the correspondent curve. Lower panel: best fit to the observed spectrum computed with log N(C) = − 3.78 and 12C/13C = 10. Spectral ranges containing artefacts which were missed by minimisation procedure are marked by thick blue lines.

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