Morphology and Photometry of Galaxies in Optically Selected High Redshift Clusters

Details Morphology and Photometry of Galaxies in Optically Selected High Redshift Clusters Morphology and Photometry of Galaxies in Optically Selected High Redshift Clusters

Jul 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996hst..prop.6581p&link_type=abstract

HST Proposal ID #6581

Mathematics

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Hst Proposal Id #6581 Galaxies &Amp, Clusters

Scientific paper

We are requesting deep, broad-band red WFPC2 images of eight distant clusters {0.55 < z less 1.1} to analyze the morphological characteristics of the cluster members. The high angular resolution imagery of HST, combined with our extensive ground based u,v,B,g,V,R,I,z photometry and spectroscopy, will allow the measurement of the morphological fractions in distant clusters as functions of redshift, color, spectral features, galaxy density, and global cluster properties such as core radius and ellipticity. We will study the spectral and rest-frame UV properties of the cluster galaxies as a function of morphological type in order to constrain the evolution of structural parameters of the cluster galaxies, the origin of the morphological segregation of galaxies, and the epoch of galaxy and cluster formation. The cluster sample has been selected objectively from large area optical/near IR ground based surveys. The proposal team has committed a significant amount of time on ground based telescopes for on-going spectroscopic data acquisition that will compliment the HST observations. We have developed and tested algorithms for performing objective measurements of galaxy morphology that will be applied to the data.

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