Speaker
Description
Interstellar dust grains may cycle through several clouds throughout their lifetime. These clouds can have different densities and the grains encounter various environments which may alter the properties of the grains. JWST enables us to observe dust in the nearby (<3 kpc) diffuse interstellar medium in unprecedented detail. By making use of background stars, we can observe the extinction of stellar light by dust grains which may reveal grain properties of the dust, such as the chemical composition, structure and size of the dust grains. In this talk I will present the Webb Investigation of Silicates, Carbons and Ices (WISCI) project in which we study dust along the line of sight of twelve OB stars in the Milky Way, using JWST MIRI and NIRCam (GO cycle 1 program id 2183), HST STIS (cycle 30 program id 17078) and VLT XSHOOTER spectroscopy. The wavelength coverage, sensitivity, and spectral resolution of JWST at near- and mid-infrared wavelengths in combination with HST and VLT observations enables a detailed multiwavelength study of the dust along these twelve sightlines. In this talk I will present the first exciting results from tis study.
