High redshift JWST predictions from IllustrisTNG: Dust modelling and galaxy luminosity functions

Understand

The James Webb Space Telescop (JWST) promises to revolutionise our understanding of the early Universe, and contrasting its upcoming observations with predictions of the $\Lambda$CDM model requires detailed theoretical forecasts.

• Here, we exploit the large dynamic range of the IllustrisTNG simulation suite, TNG50, TNG100, and TNG300, to derive multi-band galaxy luminosity functions from $z=2$ to $z=10$.
• We put particular emphasis on the exploration of different dust attenuation models to determine galaxy luminosity functions for the rest-frame ultraviolet (UV), and apparent wide NIRCam bands.
• Our most detailed dust model is based on continuum Monte Carlo radiative transfer calculations employing observationally calibrated dust properties.