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Fig. 3.
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Variation in [Mg/Fe] test. Top: spectral window of the Mg I line at 4571 Å. Bottom: spectral window of the Mg I line at 4703 Å. The best-fit model is in blue, the solar value of [Mg/Fe] is in red, the enhanced [Mg/Fe] abundance is in green, and the observed spectrum is in grey.
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