Redshifts in the Hubble Deep Field South
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2003
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Abstract
We present a catalog of 97 spectroscopic redshifts of z < 1 galaxies in the Hubble Deep Field South (HDF-S) and its flanking fields (FFs). In the HDF-S proper we observed approximately half the galaxies brighter than I-814(AB) = 24 and obtained redshifts for 76% of them. Targets in our HDF-S sample were pre-selected to be at z < 1 based on photometric redshifts, while in the FFs a simple magnitude cut was used. The photometric redshift preselection in the HDF-S resulted in a spectroscopic success rate that is significantly higher than in the FFs, where no preselection was applied. The rms precision of our redshift measurements, determined from repeat observations, is deltaz = 0.0003. We present the photometry and redshifts for the 97 objects for which we secured spectroscopic redshifts and describe the basic properties of this sample.
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catalogs, cosmology : observations, galaxies : distances and redshifts, galaxies : photometry