The MeerKAT Fornax Survey

The MeerKAT Fornax Survey maps the distribution and kinematics of atomic neutral hydrogen gas (HI) in nearby galaxy cluster using telescope. 12 deg^2 survey footprint covers central region out to ~ Rvir stretches 2 towards south west include NGC 1316 group. HI column density sensitivity (3 sigma over 25 km/s) ranges from 5e+19/cm^2 at a resolution 10" (~ 1 kpc 20 Mpc distance Fornax) down 1e+18/cm^2 1' 6 kpc), slightly below this level lowest 100" 10 kpc). mass 50 is 6e+5 Msun. velocity 1.4 km/s. In paper we describe design data processing, present sample six galaxies with long, one-sided, star-less tails (of which only one was previously known) radially oriented within measurable internal gradients. We argue that joint properties represent first unambiguous evidence ram pressure shaping cluster. disturbed optical morphology all host supports idea consist initially pulled galaxies' stellar body by tidal forces. Ram then able further displace weakly bound give their direction, length gradient.