Fig. 1.
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IRAC color–color diagram of the MIR sources. The small gray dots represent all IRAC sources selected in the COSMOS. The region bounded by dashed red lines marks the MIR-AGN selection region of Donley et al. (2012). The sources within this region are classified as MIR-selected AGNs. The color bar and overlaid contours trace the number density gradient across the diagram.
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