Mathematics – Logic
Scientific paper
Jul 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991hst..prop.2373d&link_type=abstract
HST Proposal ID #2373
Mathematics
Logic
Hst Proposal Id #2373
Scientific paper
Our program is intended to study galaxy evolution through the investigation of galaxy morphology as a function of lookback time. The development of disks and bulges, the role of mergers, interactions, and other environmental influences, are expected to be visible over the range 0 < z < 1 as judged by the spectrophotometric evolution already observed over this redshift The approved Cycle I version of this two year program called for imaging with the Wide Field Camera 5 fields in four rich clusters of galaxies at z = 0.35 - 0.55 for which extensive photometry and spectroscopy already exist. The fields included a wide range of environments from the dense cores of clusters to isolated field galaxies. These data were to be used to classify images according to traditional morphological categories and will be used to determine quantitative measures of surface brightness distributions and bulge-to-disk ratios. Due to the SA of the HST optical system, the new goal is to image a single field in one color for three times the exposure (10 hours total) in order to assess the feasibility of these goals with the present performance of the system.
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