Beta pictoris and other solar systems

Planetary systems come in a bewildering variety of shapes and sizes. In add ition to the exoplanetary systems with giant planets, found in surveys of s tellar radial velocity variations, an overlapping class of dusty disk-conta ining solar systems exists. The disks include large quantities of meteoroid s and dust, and a varying complement of gas. Their solid material represent s 'replenished' dust born in the collisions/sublimation of planetesimals pe rturbed by planets. We present several such systems, including HR 4796A, HD 141569, HD 100546, and the prototypical replenished disk of Beta Pictoris. We discuss the composition, physical processing, and migration of dust in the disks, their evolutionary status, and the evidence of embedded planets.