S. Raymond (CNRS, Laboratoire d'Astrophysique de Bordeaux, Floirac, France),
E. Kokubo (National Astronomical Observatory of Japan),
A. Morbidelli (Observatoire de la Cote d'Azur, Nice, France),
R. Morishima (University of California, Los Angeles, United States),
K. Walsh (Southwest Research Institute, Boulder, United States)

We review the state of the field of terrestrial planet formation with the goal of understanding the formation of the inner Solar System and low-mass exoplanets. We review the dynamics and timescales of accretion from planetesimals to planetary embryos and from embryos to terrestrial planets. We discuss radial mixing and water delivery, planetary spins and the importance of parameters regarding the disk and embryo propertis. Next we connect accretion models to exoplanets. We first review models for the growth of hot Super Earths by in situ accretion or inward migration. We show how terrestrial planet formation is altered in systems with gas giants, in particular by the mechanisms of giant planet migration and dynamical instabilities. Standard models of terrestrial accretion fail to reproduce the inner Solar System, and we show how the "Grand Tack" model solves this problem using ideas first developed to explain the giant exoplanets. Finally, we discuss the key ingredients missing in the current generation of simulations.

back to the program