The Influence of Ram Pressure on the Evolution of Tidal Dwarf Galaxies
  The formation mechanism of tidal dwarf galaxies means they are expected to
contain little or no dark matter. As such, they might be expected to be very
sensitive to their environment. We investigate the impact of ram pressure on
tidal dwarf galaxies in a parameter study, varying dwarf galaxy properties and
ram pressures. We submit model tidal dwarf galaxies to wind-tunnel style tests
using a toy ram pressure model. The effects of ram pressure are found to be
substantial. If tidal dwarf galaxies have their gas stripped, they may be
completely destroyed. Ram pressure drag causes acceleration of our dwarf galaxy
models, and this further enhances stellar losses. The dragging can also cause
stars to lie in a low surface brightness stellar stream that points in the
opposite direction to the stripped gas, in a manner distinctive from tidal
streams. We investigate the effects of ram pressure on surface density
profiles, the dynamics of the stars, and discuss the consequences for dynamical
mass measurements.
