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A Radio Perspective on Star-Formation in Distant Galaxies
Determination of the epoch dependent star-formation rate of field galaxies is
one of the principal goals of modern observational cosmology. Deep radio
surveys, sensitive to starbursts out to 1-2, may hold the key to
understanding the evolution of the starburst phenonemon unhindered by the
effects of dust. Using deep, high resolution radio observations of the Hubble
Deep Field, we show that the Jy radio emission from field galaxies at
is primarily starburst in origin. In addition, we have discovered
a population of optically faint, possibly obscured systems that are candidate
high- protogalaxies. At least one of these radio sources is identified with
a sub-mm detection.Comment: 4 pages, 3 figs., paper presented at Maryland October Astrophysics
Conference, 'Before the Dark Ages: When the Galaxies were Young
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