An Optical and UV Investigation of the IRAS Seyfert Galaxy 1319-164

Abstract

We present optical and UV spectroscopy, and optical-imaging observations of the bright IR-selected Seyfert galaxy 1319 - 164. We find that the nucleus is reddened by E_B-V_ = 0.3 mag, both in the lines and continuum. The galaxy is large and contains little, if any, spiral structure. There are low-brightness structures at about 5" from the nucleus, and we find the emission-line region is offset from the continuum by 0.17", or ~50 pc. The UV and optical emission-line profiles show substantial blueward asymmetries, and linewidths are consistent with a type 2 Seyfert galaxy. C IV λ1550, however, appears to have a broad component (full width at half-maximum ~6000 km s^-1^) which is offset some 600 km s^-1^ to the red with respect to the narrowline component. The UV-optical line ratios are similar to other high- ionization Seyfert 2 galaxies, except that the reddening-corrected Lyα/ Hβ ratio is less than case B. Nitrogen apppears unusually strong in the emission-line spectrum as well. We discuss the peculiarities of the system and whether it represents a large new subgroup of AGN.