Better constraints on parameters: stability studies

                          Stalport M., Delisle J.B., S√©gransan D. & Udry S. 

In multi-planetary systems, a precise estimate of the parameters (mass and orbital elements) of the planets can be crucial. In my poster, I will present a method aiming at reducing the uncertainty of each parameter in a coherent way, using a bayesian framework and stability concepts. The central idea of the procedure asserts that sets of parameters leading to unstable orbits are not realistic. Indeed, the probability of observing the system in such configurations is very small. Therefore, we exclude these sets from the possible solutions, which considerably refines the parameter space. Some exciting results will be discussed.

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