Self-Consistent Evolution of Ring Galaxies

Ring galaxies are commonly known as objects where a burst of star formation was triggered by a close encounter with an intruder, maybe a satellite galaxy. BVRI CCD observations of five ring galaxies have been performed. Here we present the results of a self-consistent approach to reproduce their observed morphology and spectral energy distribution using updated $N$--body simulations and evolutionary population synthesis models extending from UV to far--IR wavelengths. Some suggestions about the evolutionary properties of these starburst galaxies are then derived.