Fig. 6.
Top panel: hardness ratio diagram for the AGN sample. The dashed line defines the spectral classification criterion in HR3 vs. HR2 by Sturm et al. (2013a) to identify AGN. Bottom panel: hardness ratio diagram, as in the top figure but in different energy bands. The solid wedge and the dashed line define the selection criteria for highly obscured AGN in Brightman & Nandra (2012).
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