... five

Full Tables 1 and 2 are only available in electronic form at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsweb.u-strasbg.fr/cgi-bin/qcat?J/A+A/478/701

.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.

...$\alpha$ emission

This criterion minimizes the likelihood that the DLA absorption is physically associated with the quasar. A study of the DLA systems closer than 3000 km s^-1 to the Ly $\alpha$ emission is presented in a separate work (Prochaska et al. 2007a).

.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.

... list

The complete list of DLA systems of the DR5 including quasars with $z_{\rm e} > 3.5$ can be found at the web page http://www.ucolick.org/~xavier/SDSSDLA

.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.

... systems

This number is consistent with estimates of the number of intervening DLA systems at $z_{\rm a} \leq 2.2$ not detectable in Ly $\alpha$, but potentially detectable as metal systems.

.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.

...$\alpha$ absorption

A similar procedure was adopted by Ellison et al. (2005) to correct for the flux suppression due to Ly $\alpha$ absorption in the B band. Here we consider the flux suppression due to all the lines of the Lyman series that overlap the SDSS g band.

.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.

... value

Mean value of the most accurate measurements of $A_{\rm V}$ and dust column density  $\widehat{N}_{\rm Fe}$ for the DLA systems in Table 3 by Vladilo et al. (2006); the same value matches well the interstellar trend between $\widehat{N}_{\rm Fe}$ and $A_{\rm V}$ (see Fig. 4 in the same paper).

.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.

... investigations

The recent result $\langle E(B-V) \rangle / \langle N_{\rm Zn} \rangle \simeq 4.1$ $\times$ 10^-15 mag cm², found by Menard et al. (2007) in Mg II systems, yields the same value of $\langle s_{\rm V}^{\rm Fe}\rangle$, assuming that the Zn/Fe ratio is solar and $f_{\rm Fe} \simeq 0.65$.

.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.

... quasars

See web address
http://www.blackwellpublishing.com/products/journals/suppmat/MNR/MNR8374/mnr8374TableS1.txt

.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.