CCA Seminar Series: Sean Raymond

Date & Time

Title: Building a diversity of planetary systems
Abstract: The past decade of exoplanet observations has confirmed one of humanity’s (and all teenagers’) worst fears: we are weird. Even though Jupiter is the only SolarSystem planet likely to be detected with present-day technology, the SolarSystem is quantifiably unusual among exoplanet systems at the ~1% level.Instead, at least half of main sequence stars host close-in “super-Earths”,and ~10% have Jupiters on non-Jupiter-like orbits. In this talkI will present the latest thinking in how the Solar System fits in a larger context of planetary system formation. I will use dynamical simulations of planet formation in different contexts to explain the diversity of observed planetary systems, and to understand the key bifurcation points that lead to that diversity. I will propose that Jupiter is likely to blame for our SolarSystem’s weirdness.

If you are interested in attending, please contact at least 24 hrs in advance to be added to the guest list.

About the Speaker

Sean Raymond is an astronomer at the Laboratoire d’Astrophysique de Bordeaux in Bordeaux, France. His research focuses on the formation and orbital evolution of planets both in the Solar System and extra-solar planetary systems.

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