In recent years there has been a radical shift in the theoretical modelling of small-body and planet formation. Particles with stopping times comparable to their orbital times, often called “pebbles” (although they range from centimeters to meters in size), interact with gaseous protoplanetary disks in very special ways. This allows them to possibly not only directly produce the planetesimal building blocks of planetary systems, but also later accrete on to these planetesimals and potentially solve the long standing problem of giant planet core formation. In this talk I will review these recent developments and discuss the promises, and problems, of using pebbles to solve many problems in the formation of our own, and other, planetary systems.
Published on April 10, 2014
Speaker:Katherine Kretke (Southwest Research Institute, Boulder, CO)