HST + Keck Study of Disk Systems in Galaxy Cluster Cl0024+16 at Redshift z = 0.39

Details HST + Keck Study of Disk Systems in Galaxy Cluster Cl0024+16 at Redshift z = 0.39 HST + Keck Study of Disk Systems in Galaxy Cluster Cl0024+16 at Redshift z = 0.39

Jul 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001hst..prop.9206k&link_type=abstract

HST Proposal ID #9206

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Hst Proposal Id #9206 Cosmology

Scientific paper

For over twenty years, distant galaxy clusters have been a key arena for galaxy evolution studies. Despite enormous strides, our understanding of the physical mechanisms that drive distant cluster evolution remain largely theoretical and untested. Infall of groups, merging, ``harassment'', quenching of star formation, starbursts, and ram-pressure stripping all remain viable ideas. Virtually all of these mechanisms involve disks and gas. Therefore, in contrast to recent studies that focus on spheroids, we believe a more promising approach to track these physical processes would be detailed studies of cluster disk systems. This archive proposal asks support to launch a two-pronged attack to analyze an ideal, rich data set -- and one that is already in hand. One prong exploits deep B and I HST imaging of Cl 0024+1654 at z 0.39. The other prong complements the HST data with very high quality Keck spectra of over 80 sources within the HST WFPC2 field. With both data sets, we will answer two questions that highlight the physical processes which affect cluster disk evolution: {1} How do the structures, ages, and age distribution of S0 disks compare to S0 bulges at z 0.4? {2} How does the Tully-Fisher relation and M/L of cluster disk systems differ from those in the field, and what properties of the cluster galaxies correlate with these deviations?

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