AGN contamination. Fraction of the AGN contribution to the total IR luminosity (f_AGN = L_IR, AGN/L_IR) as a function of the IR luminosity from the star-forming component of the SED fitting (L_IR, SFR). The blue points show the objects with a line emission or an upper limit (Flag ≥ 0) and a good model of the SED. Red solid circles indicate mid-IR selected AGN. Red empty circles indicate Chandra 2–10 keV detections with L_{2−10 keV} ≥ 10⁴² erg s⁻¹. Horizontal red arrows indicate sources with unreliable estimates of L_IR, SFR due to the strong AGN contamination.