Title: Is HD 106906b an ejected planet? Investigating the peculiar architecture of a circumbinary environment

Abstract: HD 106906 b is a 13 ± 2 MJ exoplanet identified in 2014 by direct imaging and located at a projected separation 
of 730 AU from its host star. An asymmetric belt of debris was recently resolved around the central star, and 
complementary observations revealed that the latter is in fact a pair of intermediate-mass stars. Given its present 
configuration and the multiple observations gathered so far, the HD 106906 system represents a unique test-bed for the 
formation and dynamical evolution models of exotic planetary systems! The poster presents a tentative scenario where 
the planet first forms close-in before being ejected via resonant interaction with the central binary, and furthermore 
stabilizes at large distance possibly thanks to a fly-by. Our approach was both semi-analytical and numerical. This 
allowed us to derive probability estimates of the proposed scenario. We finally demonstrated that the current shape of the 
disk does not constraint drastically the formation scenario, but suggests that the planet orbit is eccentric.