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Fig. 1
The CH feature near 4310 Å. The observed spectrum of G 24-25 is shown as bold dots. The solid line shows the synthetic spectrum corresponding to [C/Fe] = 1.05. The dot-dashed and dashed lines, corresponding to Δ[C/Fe] = ±0.07, are shown to illustrate the sensitivity of line strengths to variations in the carbon abundance.
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