2−10 keV luminosity versus the 12 μm luminosity, both on logarithmic scales for Compton-thin (left), Compton-thick (middle), and the full sample after Compton-thickness correction (right). The typical error for these measurements is shown as a cross in the top left corner of the right panel. The continuous-red and dashed-green lines show the best fit correlations for AGN and SBs, respectively, reported by Asmus et al. (2011). The long-dashed blue line shows the linear fit to the full sample. Grey arrows mark objects with reported upper limits on the X-ray luminosity. Small double arrows in the middle panel show the expected locus if the real intrinsic 2−10 keV luminosity is 10−70 times higher than estimated.