ERC Starting Grant · 2025
Early Giants in Context: How could Galaxies Grow so Rapidly in the First Billion Years?
The James Webb Space Telescope (JWST) has revealed that galaxies in the first billion years of the Universe are maturing surprisingly fast. Massive galaxies outnumber predictions, appear to have high stellar mass densities, host massive black holes and in some cases disky morphologies. Understanding this rapid assembly is crucial: the abundance of early massive galaxies would pose a major challenge for current galaxy formation models in the ΛCDM framework. However, these results remain contentious, as they are primarily based on broad-band photometric samples, interpreted with stellar population models that were calibrated in the local Universe. The masses, nature and space density of the…
From the public funding record at EU CORDIS. Describes the funded project, not the reviews below.