WARM AND HOT GASES IN AND AROUND CLUSTER GALAXIES

We propose a pilot joint XMMNewton/HST observing program to study both warm and hot gases in two opticallyselected galaxy clusters at z0.10.2. Eachcluster has a UVbright background QSO projected within the expected strong accretion shock. We will measure the luminosity, temperature,and morphology of the hot gas component and observe UV absorption lines of the O VI doublet and other ion transitions of the clusters. These lines are sensitive to the thermal, kinetic, and chemical properties of warm gas, associated with the halos of individual galaxies and the intracluster medium. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]