Unveiling the sources of reionisation with NIRCam — Charlotte Simmonds (Universidad de Chile)

The Epoch of Reionisation (EoR) describes one of the major phase changes in the Universe, in which it went from being neutral to being transparent to ionising radiation around z~5-6. Understanding the sources responsible for this transition is one of the major outstanding problems in observational astronomy. In this talk I will present the work I have led in an effort to unveil the sources of reionisation, based on NIRCam deep imaging of thousands of galaxies at z~3-9 from the JADES collaboration. By combining observational methods and SED-fitting, we are able to shed light on the type of galaxies responsible for ionising the Universe, finding that galaxies with low (but not necessarily the lowest) stellar masses are likely dominating the ionising budget of the Universe at the EoR.

Horarios: 24 Mar 2026

Publicado por: Gijs Mulders