Computer Science
Scientific paper
Jul 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996hst..prop.6360s&link_type=abstract
HST Proposal ID #6360
Computer Science
Hst Proposal Id #6360 Agn
Scientific paper
We propose to obtain WFPC2 SNAPSHOT observations of an unique sample of radio-loud IRAS galaxies to investigate the role of galaxy mergers and starbursts in the triggering or fuelling of radio AGN. Ground-based observations have shown that our sample contains a significant class of compact objects which are intermediate between ultraluminous starburst galaxies and quasars in their luminosities and spectroscopic properties. These post-starburst AGN {PSAGN} are characterized by both strong Balmer absorption lines and high-ionization emission lines. Therefore this sample is well suited to studying the elusive missing link between starburst galaxies and AGN. The superior spatial resolution of HST will be used to discern high surface brightness structures in the PSAGN to determine the incidence, scale sizes, morphologies and luminosities of double galaxy nuclei, `hotspot' HII regions in stellar bars, circumnuclear disks, rings, and tidal arms. The images also should reveal any optical features associated with extended radio source components such as aligned optical knots or jets. The snapshot data will become publicly available immediately.
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