Fig. 7

Left panel: log(S8.0/S4.5) vs. log(S5.8/S3.6) diagram. Right panel: (3.6−4.5 μm) vs (5.8−8.0 μm) diagram. Black solid lines show the limits adopted by Stern et al. (2005) and Lacy et al. (2007) in the left and right panels, respectively. The triangles show the galaxies with broad emission lines in their optical spectra, while the open circles show the galaxies with detection of a X-ray counterpart.
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