... stars

Based on observations collected at the German-Spanish Astronomical Center, Calar Alto (CAHA H01-2.2-002) and at the European Southern Observatory, Chile (ESO 67.D-0086).

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... [Fe/H]

As usual, [Fe/H] = $\log(N_{\rm Fe}/N_{\rm H})_\star -\log(N_{\rm Fe}/N_{\rm H})_\odot$.

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