Spectrographs used for this paper with their spectral resolution, wavelength coverage, and mean S/N from the spectra used.
|Spectrograph||Resolution||Spectral range||Mean S/N|
|HARPS||115 000||378−691 nm||642|
|UVES||110 000||480−1100 nm||212|
|ESPaDOnS||81 000||370−1050 nm||775|
|FIES||67 000||370−730 nm||763|
|FEROS||48 000||350−920 nm||208|
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