Fig. 8
Metallicity as a function of H I column density of the dusty QSO-DLAs. The colored symbols show the specific selection of the background quasars (see Fig. 7). Overplotted is again the Boissé et al. (1998) line corresponding to logN(HX) = 20.5, shown together with the dashed lines representing metal column densities of log N(HX) = 21.0, 21.5, and 22.0, respectively.
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