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Fig. 7
AL 3-6: tentative fit to this low S/N spectrum, showing that it is compatible with a high CNO abundance. Blue and black lines: same observed spectrum normalized in two different ways. Red and cyan lines: synthetic spectra computed with [C/Fe] = 0.7 (red), 0.8 (cyan), [N/Fe] = +1.0, [O/Fe] = +0.8.
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