We have analyzed optical spectra of 473 X-ray and 235 optically selected AGNs , to study their emission line properties .
We present results of an analysis of the H _ { \beta } linewidths .
We find that the linewidth distribution of quasars is shifted towards higher velocities ( < v > =4300 km s ^ { -1 } ) compared to the distribution of Sy 1s ( < v > =3000 km s ^ { -1 } ) .
There are no Narrow Line Quasars , i.e .
there are no AGNs with quasar luminosities and FWHM ( H _ { \beta } ) < 2000 km s ^ { -1 } .
NLSy1s comprise 20–30 % of the AGN population at faint absolute magnitudes ( M _ { B } > -22 ) , irrespective of the selection method .
In the RASS sample we find \Gamma [ 0.1-2.4 keV ] < 3.3 .
The \Gamma vs. FWHM ( H _ { \beta } ) distribution for Sy 1 galaxies is consistent with previous work .
For QSOs the spectral index also flattens with increasing FWHM ( H _ { \beta } ) , but they have larger linewidths than Seyfert 1s .