Based on
observations collected at the La Silla Observatory, ESO (Chile),
with the CORALIE spectrograph at the 1.2-m
Euler Swiss telescope and with the FEROS spectrograph
at the 1.52-m and 2.2-m ESO telescopes, at the Paranal Observatory, ESO (Chile), using the UVES spectrograph
at the VLT/UT2 Kueyen telescope, and with the UES and SARG spectrographs at the 4-m William
Hershel Telescope (WHT) and at the 3.5-m TNG telescope, respectively, both
at La Palma (Canary Islands).