Mathematics – Logic
Scientific paper
Jul 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999hst..prop.8385d&link_type=abstract
HST Proposal ID #8385
Mathematics
Logic
Hst Proposal Id #8385 Distant Galaxies
Scientific paper
The Hubble Deep Field provided a high-quality, public data set for identifying galaxies at 2 < z < 4.5 using the ``Lyman break'' technique. These data have been used to derive the global evolution of cosmic star formation and to study the morphological and photometric properties of star forming, high redshift galaxies. HST-selected Lyman break galaxies probe lower luminosities than do ground-based samples, defining the faint end of the high redshift luminosity function and enabling studies of clustering segregation, an important test of biased galaxy formation theory. However, with only a single survey field {the HDF}, small number and small volume statistics fundamentally limit many conclusions which can be drawn about this population. Here we propose to carry out a uniform analysis of Lyman break galaxies from five separate fields: the HDF-South and North, plus three additional public data sets with deep WFPC2 imaging through three or more HDF filters. We will reduce the new fields, distribute the images to the community, define a uniform catalog of HST- selected Lyman break objects, and use them to study {1} the luminosity function, {2} global UV luminosity density, {3} clustering segregation, and {4} morphological ``families'' of Lyman break galaxies. Such data will greatly enhance the statistical robustness of previous conclusions, and test whether or not the original HDF represents a fair sample of the Universe.
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