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Fig. 3.
Left panel: Spitzer IRAC AGN selection of (Stern et al. 2005). Right panel: WISE 3 band colour–colour diagram. Overplotted are the AGN selection criteria of Stern et al. (2012) (dash-dotted line), Mateos et al. (2012) (solid line) and Jarrett et al. (2011) (dotted line)
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