Extrasolar Planets in Disks

Planets strongly influence structure in nearby circumstellar disks. Dynamical models might be used to infer the presence of an undetected planet through this interaction. This technique is complimentary to radial velocity and transit techniques as we can probe for planets in outer extrasolar systems and in young systems. Our work includes also constraints on planetary embryos in disks where they lack gaps or clearings and an estimate for the total number of giant planets residing in debris disks with central clearings.
Our group has proposed models for 3 planets, outer planets in the Fomalhaut, CoKuTau/4 system (now ruled out) and Epislon Eridani systems (model now obsolete). An object in the Fomalhaut system was discovered but it might not be a planet.