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Fig. B.2

image

NLTE carbon abundance in HD 140283 from C i 9062.48 Å line (upper left panel) and NLTE oxygen abundance from the red O i triplet: 7771.94 Å (upper right panel), 7774.16 Å, and 7775.39 Å (lower panel) lines. Observations (blue circles) are compared with synthetic spectra computed with the adopted abundances (red solid lines).

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