Johan Richard (CRAL): 4MOST
I will present the current design and plans for the 4MOST facility, focusing on the Cosmology Redshift Survey. 4MOST is a major new wide-field high-multiplex spectroscopic survey facility under development for the VISTA telescope of ESO, which will start operating in 2022. The goal of the 4MOST Cosmology Redshift Survey is to study the nature of gravity and dark energy, responsible for the structure formation in the Universe and its expansion, respectively. To this end, it will map the three-dimensional matter distribution in the Southern Galactic sky. We aim at performing precise measurements of baryonic acoustic oscillations (BAO) and redshift space distortions (RSD) from the three-dimensional distributions of galaxies with an unprecedented accuracy at redshifts up to about z=1. In particular the objectives are to measure redshifts for up to 10 million Bright Galaxies, Luminous Red Galaxies, Emission Line Galaxies and quasars. Most importantly, 4MOST will be a unique spectroscopic capability in the southern hemisphere, giving strong synergies with ongoing and future weak-lensing, CMB and radio surveys, as well as LSST.