| dc.description.abstract | We have carried out a statistical study of a large sample of radio galaxies in order to
understand how frequently we can detect nuclear optical jets, circum-nuclear dust disks,
dust lanes, or dust filaments, and to further find out what the relationships are between the
existence of dust features and their radio properties. A total of 46 nearby radio galaxies
are selected based on their HST/WFPC2 observations, from which radio jets have been
detected but without known optical jets. Galaxy model subtractions did not reveal any
prominent optical features in or near the nuclei for the sample galaxies. However, among
these galaxies, 22 (48%) reveal dark features such as dust disks, lanes, or even filaments.
In several sample galaxies, we confirm the main morphological results published by previous
authors; while in others, such as in PKS2152-69, we present our new findings of
dust features. We also discuss the dust properties along with their radio properties. Further
study will be conducted in order to learn more about the physics and the relationships
between nuclear dust and the ambient medium. | en_US |