Philippe Thébault Paris Observatory Planet formation in binaries

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Outline I Introduction - exoplanets in binaries - orbital stability II Planet formation: the different stages that can go wrong - disc truncation / grain condensation - embryo formation III Planetesimal accretion IV Light at the end of the tunnel?

Text of Philippe Thébault Paris Observatory Planet formation in binaries

Philippe Thbault Paris Observatory Planet formation in binaries Planet formation in binaries why bother? a majority of stars in multiple systems >80 detected exoplanets in binaries testbed for planet-formation scenarios Outline I Introduction - exoplanets in binaries - orbital stability II Planet formation: the different stages that can go wrong - disc truncation / grain condensation - embryo formation III Planetesimal accretion IV Light at the end of the tunnel? ~80 planets in binaries (Desidera & Barbieri, 2007) Exoplanets in Binaries (Raghavan et al., 2006) Gliese 86 HD 41004A Cephei Exoplanets in Binaries ~23% of detected extrasolar planets in multiple systems But... (Raghavan et al., 2006, Desidera&Barbieri, 2007) Exoplanets in Binaries ~2-3% ( 4-5 systems ) in close binaries with a b