Physics
Scientific paper
Jul 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999hst..prop.8162l&link_type=abstract
HST Proposal ID #8162
Physics
Hst Proposal Id #8162 Distant Galaxies
Scientific paper
Deep surveys in the sub-mm waveband are revealing a population of very luminous dusty galaxies at high redshifts, 0.5 < z < 3, which are; {a} as a population, producing stars at a rate as large or larger than the optically selected galaxy population at high redshifts and thus presumably producing a substantial {and perhaps dominant} fraction of all stars that have ever been produced; and {b} doing so, individually, in systems with bolometric luminosities {i.e. star-formation rates} that are very much larger than typically seen in the optically-selected population. Together, these suggest that the sub-mm sources represent a major phase of galaxy evolution that is not represented in the optically-selected samples. We are ed in a major study of this population using SCUBA on the JCMT. Existing HST images are playing a crucial role in this work - both in revealing disturbed morphologies of the identifications and in simply identifying the optically faintest sources. But at present our HST images only cover a modest fraction our two main survey areas, limiting the number of sub-mm sources that can be identified and studied in detail. We propose to observe additional fields in our survey areas to overcome this limitation.
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