Fig. 8.
Top: we estimate the relation (black line) between the metallicity and IRX of our Low-zZ galaxies (black filled dots) 12+log10 (O/H) = 0.2829 × log10 (IRX) + 7.8155. The dashed red line is the relation for starburst galaxies from Heckman et al. (1998) and the two blue dots are two objects from Pannella et al. (2015) at z ∼ 3.3. Bottom: from the derived relation between IRX and 12+log10(O/H) for the Low-zZ sample (blue dashed histogramme), we estimate the metallicity of the Hi-z LBG sample (red filled histogramme).
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