your ID: 0172 First Name: Dragana Last Name: Ilic Affiliation: Department of Astronomy, Faculty of Mathematics, University of Belgrade Title: Physical properties of the Broad Line Region Authors: D. Ilic, G. La Mura, L. C. Popovic, A. I. Shapovalova, S. Ciroi, V. H. Chavushyan, P. Rafanelli, A. N. Burenkov, A. Marcado Topic: 5 Session: oral Abstract: We have applied the Boltzmann-Plot method to the Balmer lines intensities to estimate the electron temperature in the BLR. We have studied the Balmer lines of a sample of 90 AGN from SDSS database, as well as the time variability of the same lines of NGC 5548 and NGC 4151. (2) Poster Title: Emitting gas regions in Mrk 493: An extensive Fe II line emission region Authors: L.C. Popovic, A. Smirnova, D. Ilic, A. Moiseev, J. Kovacevic, V. Afanasiev Abstract: We present an analysis of the 3D spectra of Mrk 493, a Sy 1 nucleus, observed with integral-field spectrograph MPFS of the SAO RAS 6-m telescope. We found that there is strong Fe II emission in an extensive region around Sy 1 nucleus (around 4''x4'' around the nucleus). Moreover, we fitted the Fe II and H-beta lines in this region in order to compare the kinematical parameters of the Balmer and Fe II line emitting region. Also we have created intensity maps and velocity fields in different emission lines of the ionizing gas as well as velocity fields of star. Diagnostic diagrams have been made in order to define what was a source of gas ionization (active nuclei, hot young stars or shock waves).