... (HERES)

Based on observations carried out at the European Southern Observatory, Paranal, Chile. Proposal number (170.D-0010).

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...

Table 2 and Appendix A are only available in electronic form at http://www.edpsciences.org

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... [Fe/H]

We use the standard notations ${\rm A/B} = N_{\rm A}/N_{\rm B}$ and ${\rm [A/B]} = \log ( N_{\rm A} / N_{\rm B} )_\star - \log (N_{\rm A} / N_{\rm B})_{\odot}$ where $N_{\rm X}$ are number densities.

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