A very deep IRAS survey. III - VLA observations

Astronomy and Astrophysics – Astronomy

Scientific paper

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Infrared Sources (Astronomy), Sky Surveys (Astronomy), Starburst Galaxies, Very Large Array (Vla), Infrared Astronomy Satellite, Luminosity, Radiant Flux Density, Radio Emission, Spectral Line Width, Spiral Galaxies

Scientific paper

The 60-micron fluxes and positions of sources (primarily starburst galaxies) found in a deep IRAS survey by Hacking and Houck (1987) are compared with 1.49 HGz maps made by the Very Large Array. The radio results are consistent with radio measurements of brighter IRAS galaxies and provide evidence that infrared cirrus does not contaminate the 60-micron sample. The flux-independent ratio of infrared to radio flux densities implies that the 1.4 GHz luminosity function for spiral galaxies is evolving at less than (1 + z) to the power of 4 relative to the 60-micron luminosity function.

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