ES-07-0017

Giant planets demographics

Anne-Marie LAGRANGE

Giant planets play a major role in the building of multiple planetary systems. Knowing their demographics is therefore important to test and understand their overall impact on planetary systems formation and architecture. It is also important to test their formation processes.

Radial distributions of giant planets have been derived from large radial velocity (RV) and high contrast imaging (HCI) surveys in the recent years. They cover complementary domains in terms of semi-major axis.

We highlight a few limitations and biases associated with each of these radial distributions, and question the validity range of these distributions. We also discuss the extent to which both results can be merged in a single analysis.

We finally discuss possible ways to overcome these limitations.