Planet Formation: Connecting Exoplanetary Properties to the Evolution of Protoplanetary Disks

Wednesday, 14. October 2015, 16:00 - 17:30
Location Library

Ralph Pudritz (McMaster U, Hamilton, Canada) - Planet Formation:  Connecting Exoplanetary Properties to the Evolution of Protoplanetary Disks

 

With over two thousand confirmed exoplanets known,  distinct planetary populations
that bear little resemblance to the Solar System can be discerned. Among these are
Hot Jupiters orbiting at the relative orbit of Mercury,  warm and more massive Jupiters
at 1 AU, and the dominant population of SuperEarths one to ten times the mass of the
Earth  in close-in orbits.   The characterization of planetary properties
as well as the first steps in measuring planetary  atmospheres are moving forward rapidly
with the discovery of a wide range in densities  of the SuperEarth population in particular.
In this talk I will review and address these two outstanding questions in the field.
I will then show how the evolution of protostellar disks and in particular
the existence of inhomogeneities in them (eg. ice lines) act as planet traps that stamp unique
orbital  and chemical properties on forming planets.  By following the evolution of disk chemistry, one
can
determine the materials out of which planets are built as they move through their host
disks, thereby connecting planetary chemistry and dynamics with protoplanetary disk evolution.

 



: Ralph Pudritz