Revealing the Obscured Universes Through Deep Radio Observations

Details Revealing the Obscured Universes Through Deep Radio Observations Revealing the Obscured Universes Through Deep Radio Observations

Dec 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...21114101s&link_type=abstract

American Astronomical Society, AAS Meeting #211, #141.01; Bulletin of the American Astronomical Society, Vol. 39, p.991

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Scientific paper

Using a variety of discrimination methods we have separated 500 radio sources from a very deep (4sigma=30uJy) radio survey into star forming galaxies and AGN. Hence we are able to reproduce the faint source counts by type for the first time. As expected we find a trend of an increasing contribution from star forming galaxies with decreasing flux density, with star forming galaxies accounting for 2/3 of sources at the faintest flux densities. Using the star forming galaxies we are able to derive the star formation rate density up to z=3 and find it consistent with results derived from other wavelengths. We study two subsets of the faint radio populations. Firstly, we examine HyLIRGs (i.e. starbursts with SFR 1000Msun/yr equivalent to L_IR 10^13Lsun) lying at 1.5

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