Abstract
Here we discuss possibility that a disk emission is present in the Broad Emission Lines (BELs) of Active Galactic Nuclei (AGN), even if they have only broad single-peaked lines. We introduce a two-component model assuming that two regions contribute to the BELs: a disk emission and an emission region with isotropic velocity field. Then we simulate the line profiles and compare them with observed ones. We found that the disk emission may be present in the broad single peaked lines, but the disk contribution tends to be smaller than 70% of the total line flux and the disk inclination seems to be smaller than 20°.
