| Abstract: | We now know of over 6000 confirmed exoplanets thanks to a large number of surveys. In particular, the Kepler, K2, and TESS missions dominate the number of discovered planets. Interestingly, a large fraction of these planets are in multi-transiting architectures with closely-packed compact orbits. On one hand, the compact nature of the orbits increases the chance for dynamical instabilities. On the other hand, the multi-transiting nature which requires very low mutual orbital inclinations led people to think that dynamical instabilities may not have played an important role for these systems. Recently, several studies have indicated that the separations between orbits in known multiplanet systems may indicate past dynamical morphing. We show that indeed, dynamical instabilities previously more compact systems with higher number of planets not only can simultaneously explain all observed distributions of exoplanet properties, many correlations between these properties naturally emerge as a result of such instabilities without any input from formation theories. Our results thus suggest that most observed trends in the multis may not have been acquired by birth, but by nurture through a variety of dynamical processes after birth. In my presentation I will talk about the various dynamical processes that may have shaped the orbital architectures of these multiplanet systems. |
