Abstract

Invited Talk - Plenary

Thursday, 12 September 2024, 09:30   (Aula 1&2 / virtual plenum)

Protostars and protoplanetary disks with JWST: probing the material that builds planets

Ewine van Dishoeck
Leiden Observatory, the Netherlands; MPI for Extraterrestrial Physics, Garching

Understanding how stars and planets form requires observations at long wavelengths in order to penetrate their dusty natal clouds. Thanks to its high sensitivity and resolution, Webb is a major step forward in studying the physical and chemical structure of embedded protostars and disks. This talk will present an overview of recent results on gaseous and icy molecules, most notably from the MIRI guaranteed time programs JOYS and MINDS. Water, CO2 and a variety of organic species are detected. Together with related ALMA data, they point to a rich chemistry with a varying composition and C/O ratio that may be linked to stellar mass and to the physical structure of the planet-forming zones of disks.