HST imaging of nearby CSOs: obscuration and nuclear structures
Stocke, J. T.; Conway, J. E.; Reynolds, C.; Perlman, E. S.; Begelman, M.
United States, Sweden
Abstract
We present 3-band HST imaging of three nearby ( z<0.1) compact symmetric objects: 4C31.04, 1946+708 and 1146+596 (NGC 3894). These objects were chosen for HST observation on the basis of detected HI and molecular line absorption. The images show large amounts of obscuration in each source, well distributed throughout the host galaxies, but somewhat concentrated in the nuclear regions. All three also show evidence of nuclear structures which resemble disks or tori. We discuss the possible association of the nuclear structures and obscuration with their radio structures, and compare with other HST observations of GPS, CSS and large-scale radio galaxies.