Fig. 5.
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Difference between the output metallicities [Fe/H] computed assuming [α/Fe] = 0.08 and literature spectroscopic estimates for each GC, as provided by Harris (1996). The scatter around the mean value is 0.07 dex. Error bars are given by the sum in quadrature between our uncertainties and those by Harris (1996), and amount to ∼0.1 dex.
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