Gas-rich galaxy merger
= Gas-rich galaxy merger
= Wet galaxy merger
{synonym}
A <gas-rich galaxy merger> involves a substantial reservoir of gas capable of <radiative cooling>. Dissipation and gravitational torques permit gas inflow and enhanced <star formation>, unlike the nearly collisionless <stellar evolution> in a <dry galaxy merger>. A surviving or replenished gas reservoir can subsequently form a <galactic disk>.