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2 Data

High-quality data of the Hubble Deep Field South (HDF-S) quasar J2233-606 ( $z_{\rm em} = 2.238$, $B \simeq 17.5$) were obtained during the commissioning of the UVES on the VLT 8.2 m Kueyen telescope at Paranal (Chile) in October 1999. The resolving power at which the spectra were recorded in the spectral range $\lambda\lambda = 3050{-}10\,000$ Å was $R \simeq 45\,000$, corresponding to velocity resolution of $FWHM \simeq 6.7$ km s-1.

The data reduction and the identification of metal absorption-line systems in the J2233-606 spectrum are reported in Cristiani & D'Odorico (2000). In our study we also used the J2233-606 echelle spectrum ( $R \simeq 30\,000$, $\lambda\lambda~2275-3118$ Å) obtained with the HST/STIS (Savaglio 1998).


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