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S.E. Ridgway (JHU), M.D. Lacy (IGPP,LLNL)
Study of the host galaxies and environments of high redshift AGN is proving a valuable complementary probe of current theories of how galaxies form and evolve. By observing the hosts of such objects, we can study high-z galaxies without pre-selecting for unusual star-forming properties. It is important, however, to understand how the strength of the AGN may affect the properties of the hosts. One measure of the effect the radio source may have on the host galaxy is the alignment seen between the rest-frame ultraviolet morphology of the host and the radio structure in high-redshift radio galaxies, the so-called ``alignment effect''. We discuss here the results of an HST optical and ground-based near-infrared imaging study of a sample of z ~1 low-radio-luminosity galaxies and quasars. We have resolved the host galaxies around the quasars, and we compare the properties of these radio source hosts, including magnitude, scale size and degree of ``alignment effect'', to those of the highly radio luminous 3C sources at similar redshifts.