Plots of X-ray (upper panel: 0.5–2 keV; lower panel: 2–10 keV) versus infrared luminosity. The X-ray luminosity has been corrected only for Galactic absorption. The X-ray selected AGN are marked with filled squares. The typical error bars are indicated. For objects that are not detected, the 95 per cent upper limits are indicated by arrows. When multiple components are resolved in a single system, their luminosities are computed separately (Table 3). The decomposition of the infrared luminosity in individual objects is described in Appendix A. There is a moderate correlation, with a correlation coefficient of  ~ 0.6 for both plots.