Bibcode
                                    
                            DOI
                                    
                            Rudy, R. J.; Levan, P. D.; Rodriguez-Espinosa, J. M.
    Referencia bibliográfica
                                    Astronomical Journal, vol. 87, Apr. 1982, p. 598-601. NSF-supported research.
Fecha de publicación:
    
                        4
            
                        1982
            
  Revista
                                    
                            Número de citas
                                    43
                            Número de citas referidas
                                    43
                            Descripción
                                    Thirty Seyfert galaxies have been studied for bright sources. The
photometry is reported and three of the more unusual galaxies (Mrk 705,
Mrk 817, and Mrk 1095) are individually discussed. It is confirmed that
infrared emission in excess of the stellar contribution is commonplace
in Seyfert galaxies. Attention is drawn to the J-K colors of the
galaxies which are generally redder for the Type I Seyferts than the
Type II's. This can be explained either thermally or nonthermally.