X-ray to optical flux ratio (X/O) vs. R−K (Vega) colour magnitude plot. Open circles represent all the data points from the XMM-COSMOS survey, red and blue filled circles represent the spectroscopically confirmed narrow line and broad line AGNs, respectively. In green are the AGNs with detected outflows published in Brusa et al. (2015a) and Perna et al. (2015b). Data points in starred cyan represent the objects from this paper. Clearly, we are exploring a different region of the plane with our sample.