Morphological Transformation of Red Sequence Galaxies in High Redshift Galaxy Clusters

Pierluigi Cerulo (Swinburne University of Technology)

I present the results of a detailed analysis of the morphological properties of red sequence galaxies in a X-ray detected cluster at redshift z=0.98. Overall, the red sequence is dominated by elliptical and S0 galaxies. The fraction of S0s decreases at faint luminosities, where disc-dominated systems tend to become more frequent. From the comparison with a sample of local galaxy clusters, I discuss possible scenarios for the evolution of galaxies of different morphologies. I finally show the ongoing application of the analysis developed for this cluster to a sample of galaxy clusters at 0.8

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