MATs (Monday Afternoon Talks)
3:00pm – Will Roper
Massive Compact Galaxies in the Epoch of Reionisation – This can’t be right… A tale of confusion, surprise and compact galaxies
Massive galaxies in the early universe are thought to be highly compact, an assertion which the first Webb observations have only strengthened. Indeed, in the First Light And Reionisation Epoch Simulations (FLARES) we find massive compact galaxy populations in agreement with both legacy Hubble observations and contemporary Webb observations. However, we also find negatively sloped intrinsic UV size-luminosity and size-mass relations at odds with intuition. In this talk I will show that, despite the oddity of these relations, they are in agreement with observations after forward modelling and driven by robust physical mechanisms.
Host: Josh Burrow