ELAIS : A deep survey with the ISO satellite

We used a deep VLA radio survey (5 sigma limit of 0.135 mJy at 1.4 GHz) in the same region of the sky that have been surveyed over the wavelength range 6.7 - 175 microns with ISO (as part of the European Large Area ISO Survey, ELAIS) to study the radio far-infrared correlation to a flux density deeper than that reached by IRAS. The radio far-infrared correlation is expected to extend below the IRAS flux level since the majority of the sub-mJy radio sources have been identified with the faint blue galaxies with spectra similar to those of star forming objects.