Mathematics – Logic
Scientific paper
Jul 1995
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995hst..prop.5957s&link_type=abstract
HST Proposal ID #5957
Mathematics
Logic
Hst Proposal Id #5957 Agn
Scientific paper
Radio galaxies are an important class of extragalactic objects: they represent one of the most energetic astrophysical phenomena; they may be used as probes of their environments; and they are unique probes of the early Universe. The size scales and brightness levels which HST can measure are ideally suited to the study of optical emission associated with the host galaxies of radio sources and anomalies such as jets and tidal debris. In Cycle 4 we began a PC continuum snapshot survey of the 3CR catalog to address the following: What are the host galaxy morphologies --- are there differences between FR-I and FR-II sources, nuclear cusps, tidal tails? How common are optical jets? Do optical continuum and radio structures align and is there detailed morphological correspondence? How common are dust-lanes and nuclear dust-discs, what is their orientation and morphology? Here we request time to continue/complete our broad-band survey and to extend it to OII Lambda 3727 observations of the strong emission line objects with z < 1.4 using the ramp filters. These observations will map the distribution of circumnuclear ionized gas, identify where jets and gas interact, and find gas disks, filaments and tidal tails. The images will provide unique information about radio galaxies and their evolving environments, and the project will produce an extremely valuable archival database on one of the most studied samples in history and a major resource for the astronomical community.
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