Spatially Resolved Near-Infrared Spectroscopy of the Seyfert 2 Galaxies Markarian 1066, NGC 2110, NGC 4388, and Markarian 3

We present near-infrared spectra with resolutions of lambda/dlambda~1200 inthe emission lines of Pa-beta, [FeII] (1.2567um), Br-gamma, and H2 v=1-0S(1) ofthe nuclei and circumnuclear regions of the four Seyfert 2 galaxies Mk 1066,NGC 2110, NGC 4388, and Mk 3. All of these galaxies show strong near-infraredline emission that is detected at radii several times the spatial resolution,corresponding to projected physical scales of 0.07 to 0.7 kpc. Velocitygradients are detected in these nuclei, as are spatial variations in lineprofiles and flux ratios. We compare the spatial and velocity distribution ofthe line emission to previously observed optical line and radio emission. Theevidence indicates that the [FeII] emission is associated with the Seyfertactivity in the galaxies. Our data are consistent with X-ray heating beingresponsible for most of the [FeII] emission, although differences in [FeII] andPa-beta line profiles associated with radio emission suggests that the [FeII]emission is enhanced by fast shocks associated with radio outflows. The H2emission is not as strongly associated with outflows or ionization cones as isthe emission in other lines, but rather appears to be primarily associated withthe disk of the galaxy.Comment: 35 pages, 24 figure