Seminar by Ugo Lebreuilly (CEA Saclay)
Dust evolution from star-forming environments to protoplanetary disks
Abstract
Dust is a key component of the interstellar medium (ISM). It plays a major role in radiative transfer processes, the interaction between neutral gas and magnetic fields, chemical processes, and, of course, planet formation. In the ISM, dust dynamics can differ significantly from those of the gas, leading to variations in dust concentration. In addition, dust grains can stick together or fragment through collisions, which also alters their size distribution. In this talk, I will first present our state-of-the-art methods for modeling gas and dust dynamics and our recent efforts to model dust-dust sticking and fragmentation. Then, I will present simulations of dust evolution in various environments, such as molecular clouds, collapsing dense cores, and newly formed protoplanetary disks.