Fig. 11

Reddening of the background QSOs with detected C i absorption versus N(H i) of the C i absorbers. Symbol conventions are the same as in Fig. 10. The solid curve shows the relation observed in the local ISM where E(B−V) /N(H)= 1.63 × 10-22 mag atoms-1 cm2 (Gudennavar et al. 2012). The dotted curve illustrates a reddening per hydrogen atom ten times higher than that. The dashed curves correspond to the observations of the Magellanic Clouds (Gordon et al. 2003). The long-dashed curve shows the relation derived for typical DLAs at zabs ≈ 2.8 (e.g., Vladilo et al. 2008; Khare et al. 2012).
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