Ultraluminous Infrared Galaxies at 1.5<z<3 occupy dark matter haloes of mass ~6x10^13 solar masses

We present measurements of the spatial clustering of ultraluminous infrared galaxies in two redshift intervals, 1.5 1. Adopting plausible models for the growth of DM haloes with redshift, then the haloes hosting the 2<z<3 sample will likely host the richest clusters of galaxies at z=0, whereas the haloes hosting the 1.5<z<2.0 sample will likely host poor to rich clusters at z=0.