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Fig. 1


Stellar abundances of Mg, Si, O, and C as function of [Fe/H] for the stars in our sample. The stellar abundances have been observed in the GALAH survey (Buder et al. 2018). The error bars are the mean deviations of the observations. The data is given in Table A.1. Sulfur (not shown) scales in the same way as silicon (Chen et al. 2002).

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