Detectability of AGN signatures at different stellar masses. Left: stellar mass as a function of the IR luminosity attributed to the AGN emission L_IR,  AGN. The symbols represent our sample at z ∼ 1.2 and are color coded according to f_AGN as in previous figures. Empty blue circles indicate X-ray detections. Arrows mark the floor of f_AGN = 1% adopted in this work. A similar picture is offered when using L_{2 − 10 keV} as a proxy for the AGN emission in lieu of L_IR,  AGN. Right: stellar masses from the standard stellar population synthesis modeling (Muzzin et al. 2013; Laigle et al. 2016) compared with results obtained by following Circosta et al. (2018). Symbols and colors are the same as in the left panel.