Description
High redshift radio galaxies (HzRGs) provide unique diagnostic tools about the conditions in the early Universe. While large samples of radio galaxies (RGs) at low redshift (z <1) are available and their properties have been studied in great detail, our knowledge of high redshift RGs is extremely limited: only a few tens of RGs are known. We recently started a project to select HzRGs candidates applying the dropout color technique. We selected flux-limited radio sources from the extragalactic GLEAM catalogue and we searched for the optical counterparts of the radio emission imaged at high resolution in the VLASS survey. We selected u-dropout radio galaxies candidates (z~ 3) from The Kilo-Degree Survey (KiDS) and g-drop candidates (z~4) from the Hyper Suprime-Cam Subaru Strategic Program survey (HSC-SSP). We have already obtained observational time at the 3.6 meters New Technology Telescope (NTT) to spectroscopically confirm the u-dropout selected candidates.
