Markarian galaxies in UV and multiwavelength studies

Abstract

The UV properties of 1152 Markarian galaxies have been investigated based on GALEX data. These objects have been investigated also in other available wavelengths using multi-wavelength data from X-ray to radio. Using our classification for activity types for 779 Markarian galaxies based on SDSS spectroscopy, we have investigated these objects on the GALEX, 2MASS and WISE color-magnitude and color-color diagrams by the location of objects of different activity types and have revealed a number of loci. UV contours overplotted on the optical images revealed additional structures, particularly spiral arms of a number of Markarian galaxies. UV (FUV and NUV) and optical absolute magnitudes and luminosities have been calculated showing graduate transition from AGN to Composites, HIIs and Absorption line galaxies from (average $M$ ) $-17.56^{m}$ to $-15.20^{m}$ in FUV, from $-18.07^{m}$ to $-15.71^{m}$ in NUV and from AGN to Composites, Absorption line galaxies and HII from $-21.14^{m}$ to $-19.42^{m}$ in optical wavelengths and from (average $L$ ) $7\times10^{9}$ to $4 \times 10^{8}$ in FUV, from $1\times 10^{10}$ to $5\times10^{8}$ in NUV and from AGN to Composites, Absorption line galaxies and HII from $7\times10^{10}$ to $1\times10^{10}$ in optical wavelengths.