Other
Scientific paper
Jul 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002hst..prop.9531g&link_type=abstract
HST Proposal ID #9531
Other
Hst Proposal Id #9531 Agn/Quasars
Scientific paper
The phenomena associated with active galactic nuclei are generally thought to arise from the accretion of material onto a supermassive black hole. Bursts of star formation may also be required to account for certain properties. In support of this picture, recent studies have shown that circumnuclear starbursts are probably the source of the unpolarized ``featureless continuum'' of Seyfert galaxies. Seyfert nuclei reside in very dusty environments, however, and therefore optical/UV studies are not always the best suited for studying compact starbursts surrounding the AGN. We propose to analyze a survey of 41 Seyfert nuclei and other active galactic nuclei for which the archive holds multifilter NICMOS images. We will employ a rigorous and tested image decomposition algorithm to separate the relative contributions of the active nucleus {point source} and nuclear starburst or star cluster {extended emission}. We show that NICMOS color analysis can provide unique constraints on the size, age, and bolometric contribution of a nuclear starburst within the central tens of parsecs of nearby AGNs. To the best of our knowledge, this proposed effort will be the first to examine systematically the starburst-AGN connection on such compact scales {i.e., size comparable to or smaller than the NLR} that might be relevant for fueling and unification.
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