Gas dynamics and chemistry around an embedded planet

The chemical properties of exoplanets are inherited from their natal protoplanetary disk. In models that compute the link between disks and planets one generally assumes that the chemical state of the material is unchanged as it flows from the disk to the planet. However the gas is heated as it falls deeper into the planet's gravitational potential, potentially leading to a drastic change in its chemical makeup between the hot circumplanetary disk and the much colder protoplanetary disk. In this talk I will present recent work post-processing a hydrodynamic simulation with a chemical kinetic model to demonstrate the chemical processing of the gas as it flows from the cold (~ 40 K) protoplanetary disk to the hot (~ 200-800 K) circumplanetary disk. The large change in temperature releases all of the available volatiles into the gas phase which could change the rate at which elements like carbon and oxygen are transported to the atmosphere of giant planets. In addition the warm temperatures allow for unique chemistry to occur in the circumplanetary environment which could differentiate it from the protoplanetary disk observationally.