Fig. 7
The mid- and near-IR colours of the AGN and galaxies in the XSS extragalactic sample. Top panel: WISE W2 − W3 versus W3 − W4 two-colour diagram. Bottom panel: 2MASS J − H versus H − K two-colour diagram. In both cases, the XSS AGN are shown as crosses (black) and the galaxies as circles (blue). For comparison, the XSS sources categorized as stars are shown as asterisks (red).
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