Fig. 17.
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Objects colour-coded by redshift. AGNs are shown as crosses, and GELDAs are upside-down Ys. This figure shows that GELDAs (both z ⩾ 8.8 in red and z < 8.8 in blue) have lower metal masses than the rest of the sample. This would support the hypothesis that the origin of dust grains in these objects might not be due to ISM growth.
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