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Session 37 - Clusters of Galaxies - X-Rays.
Display session, Tuesday, January 14
Metropolitan Ballroom,

[37.05] Temperature Distribution of Distant Galaxy Clusters From ASCA Data

K. J. Rines (Rice U.), E. Churazov, M. Gilfanov (IKI), R. H. Donnelly, W. Forman (SAO), J. Plummer (Washington State U.)

Clusters of galaxies are important cosmological probes. Since they are dynamically young, it is possible that evolution could be observed between a redshift of z \sim 0.3 to the present. We have used ASCA data to determine temperatures for a sample of clusters at redshifts of z \sim 0.3 and higher. The resulting distribution of temperatures is consistent with the distribution of temperatures obtained from analysis of nearby clusters. This suggests that cluster temperatures do not evolve significantly up to a redshift of z \sim 0.3. We discuss the implications of these observations for some current models of cluster formation and evolution.

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