Recent results of studies of IR galaxies

Infrared galaxies are among the most important extragalactic objects for studying the formation and evolution of galaxies, star formation and SFR in galaxies, morphology, interacting and merging galaxies, variety of types of active galaxies (many Seyferts, LINERs, Starbursts and Composites), the luminosity function of galaxies (at higher redshifts), radiation mechanisms / energy sources, cosmological role of active galaxies, interrelationship between Starburst, AGN and interaction/merging phenomena, etc. We have carried out several studies of IR galaxies, including their revelation by optical identifications of IR sources and creation of Byurakan-IR Galaxies (BIG) sample of 1179 galaxies, redshift survey, study of pairs and multiples among the BIG objects, compilation of a IRAS PSC/FSC Combined Catalogue of 345,163 IR sources and distinguishing extragalactic objects among them, study of IR luminosities and IR/opt flux ratios, search and discovery of 114 ULIRGs and HLIRGs in the mentioned sample, their activity types from SDSS, morphology and X-ray, UV, optical and radio properties of IR galaxies, study of SEDs of IR galaxies by 17 photometric measurements from 1.25µ to 160µ range using 2MASS, WISE, IRAS and AKARI IRC and FIS catalogues