Dust-depletion sequence of the host of GRB 161023A and the three main components resolved. The relative abundances are [Zn/Fe] = 0.7 for the total host system and 0.52, 0.6 and 1.34 for components I, II and IV respectively. As comparison, we show dust-depletion patterns from fitting DLA absorption systems (see De Cia et al. 2016). In the bottom panel we plot the dust-corrected metallicities (see also Table 4).
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