Histogram of our metallicities in black with a mean of [Fe/H] = 0.11 and a standard deviation of 0.15. The red histogram shows the metallicities of the Galactic centre giants of Cunha et al. (2007). For comparison we show the field of Rich et al. (2007) located at (l,b) = (0°,− 1°) in magenta, the field at (0°, − 1.75°) in green (Rich et al. 2012), and the field at (1°, − 2.65°) in blue (Rich et al. 2012).
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