A millimetre survey of starburst dominated ultraluminous infrared galaxies at z∼ 2

We present millimetre observations of a sample of 12 high redshift ultraluminous infrared galaxies (ULIRGs) in the Extended Growth Strip (EGS). These objects were initially selected on the basis of their observed mid‐IR colours (0.0 3σ) with a mean 1200� m flux of = 1.6 ± 0.1 mJy. Our millimetre photometry, combined with existing far‐IR photometry from the Far‐IR Deep Extragalactic Legacy (FIDEL) Survey and accurate spectroscopic redshifts, places constraints both sides of the thermal dust peak. This allows us to estimate the dust properties, including the far‐IR luminosity, dust tempera ture, and dust mass. We find that our sample is similar to other high‐z and intermediate‐z ULIRGs, and local systems, but has a different dust selection function than submillimeter‐sel ected galaxies. Finally, we use existing 20cm radio continuum imaging to test the far‐IR/radio correlation at high redshift. We find that our sample is consistent with the local relation, imply ing little evolution. Furthermore, this suggests that our sample selection method is efficient at ide ntifying ultraluminous, starburst‐ dominated systems within a very narrow redshift range centered at z � 2.