Multicolour Optical Surface Brightness Profiles Decomposition of the   Seyfert Galaxies III Zw 2, Mrk 506 and Mrk 509
  We present the results of the UBVRcIc surface brightness profiles decomposition of the Seyfert galaxies III Zw 2, Mrk 506 and Mrk 509. The profiles were modelled as a sum of a Gaussian, a Sersic law and an exponent. A Ferrers bar and a Gaussian ring were added to the model profiles of III Zw 2 and Mrk 506, respectively. The parameters and the total magnitudes of the structural components were derived. 
L. Slavcheva-Mihova, B. Mihov, G. Petrov, V. Kopchev