AAS 196th Meeting, June 2000
Session 51. Galaxy Evolution and Populations/Clusters
Display, Thursday, June 8, 2000, 9:20am-4:00pm, Empire Hall South

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[51.06] HST/STIS Far-UV Continuum and Lyman-Alpha Imaging of Radio Galaxies in Cooling Flow Clusters

A. M. Koekemoer, C. P. O'Dea, S. A. Baum (STScI), A. Laor (Technion)

We present detailed HST/STIS imaging of the Lyman-alpha and continuum emission associated with the hosts of radio galaxies in strong cooling-flow clusters. The origin and emission mechanisms of this gas is of great interest, as it is a tracer not only of cool gas in the centers of these clusters but also gives valuable information about recent star-formation that has been occurring. The emission also traces interactions between the radio source and ambient gas, thereby allowing a direct investigation of the effect of the surrounding gas upon the evolution of the radio source, together with the overall role played by the radio source in the long-term energetics of the cooling-flow nebula.

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