Open Access
Fig. 8.
Metallicity vs. H I column density for the sample of ESDLAs (homogeneous, blue) and GRB-DLAs (red). Filled symbols represent the systems with firm detection of strong H2 lines (log N(H2)≥18.3). The dashed line shows the constant total metal column density corresponding to log N(Zn II) = 13.15 from Boissé et al. (1998).
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