Computer Science
Scientific paper
Jul 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004hst..prop10117o&link_type=abstract
HST Proposal ID #10117
Computer Science
Hst Proposal Id #10117 Agn/Quasars
Scientific paper
We will carry out a STIS/NUV-MAMA snapshot imaging survey of the most compact powerful radio galaxies, the Gigahertz Peaked Spectrum {GPS} sources and Compact Steep Spectrum {CSS} sources. These objects are as powerful as the large radio doubles but are much smaller {and younger} and are crucial to our understanding not only of how radio-loud active galactic nuclei {AGN} form and evolve, but also what role they play in the evolution of galaxies. A very direct and robust way to address these issues is by high resolution imaging of the host galaxies of these sources in the UV. This has never been done before for a sample of these very compact sources, since previous HST/UV imaging programs have focussed on the larger radio galaxies. The UV emission can provide crucial information about any recent star formation that may have occurred as a result of ongoing accretion, mergers, interactions, or triggering by the radio source. By comparing the starburst properties of GPS, CSS, and large scale radio sources, we will be able to constrain the evolution of massive star formation as a function of the relative age of the radio source. {Note, due to the failure of STIS, these observations will be carried out using the ACS/HRC}.
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