Fig. 1
Spectroscopic metallicities reported for the FGK GBS in the literature between 1948 to 2012, as retrieved from the PASTEL database (Soubiran et al. 2010). Black circles: all measurements. Red circles: only those measurements where Teff and log g reported by those works agreed within 100 K and 0.5 dex with the fundamental values considered by us (see Table 1).
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