Redshift distributions of zCOSMOS extragalactic objects in the redshift range examined (0.65 < z < 1.50). Top panel: parent galaxy sample. Middle panel: narrow-emission-line galaxies with [Ne v] detection. Lower panel: broad-line AGN selected from the zCOSMOS survey (empty histogram); the hatched histogram shows the [Ne v]-detected objects. The vertical dashed line marks the upper redshift limit at z = 1.2.