We present high-resolution optical and near-infrared HST observations of two adjacent regions in the fossil starburst region in M82 , M82 B1 and B2 .
The presence of both the active and the fossil starburst in M82 provides a unique physical environment to study the stellar and dynamical evolution of star cluster systems . The cluster population in B2 is more heavily affected by internal extinction than that in B1 , amounting to an excess extinction in B2 of A _ { V, { excess } } \simeq 1.1 \pm 0.3 mag .
Preliminary age estimates date the cluster population in the fossil starburst between \sim 2 \times 10 ^ { 8 } and \sim 10 ^ { 9 } years .
The radial luminosity profiles of the brightest clusters are more closely approximated by power laws than by a Gaussian model , in particular in their wings , which favors a slow star formation scenario .