Institute for Advanced Study Informal Astrophysics Seminar

I will discuss two cases where models of protoplanetary discs developed for astrophysical application can help understand problems in cosmochemistry. In the first I will show how accretion bursts through the gravo-magnetic limit cycle can control the D/H ratio in water. The bursts can thermally process a large fraction of water in the disc allowing isotopic exchange with Hydrogen at high temperatures. This processed water can then be transported to small radii by advection and larger radii by diffusion. Allowing the observed D/H water ratio distribution in the solar system to be qualitatively explained. Secondly, I will discuss models which aim to investigate the transport of the components of meteorites, using the constrains on the chemical composition of these components we can track the time and location of formation.