= Clément Baruteau
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<Clément Baruteau> studies the gravitational interaction between <planets> and their surrounding <protoplanetary disks>. He led a review of how those interactions alter planetary <orbits> during the formation of planetary systems.
The key comparison is between the <time> over which a <planet>'s <orbital elements> change and the lifetime of the <protoplanetary disk>. If the former is short, <planetary migration> can substantially reshape the system before the <gas> disappears. Predicting that change requires a model of the disk's physical structure, because the gravitational forces depend on the disk's response to the <planet>.<Planet-Disc Interactions and Early Evolution of Planetary Systems by Clément Baruteau and others>[Abstract: strong planet–disk forces, orbital evolution times and dependence on disk structure]{ref}
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