Astro Seminar
The evolution of the Hubble Sequence with the James Webb Space Telescope, Euclid and Herschel
Speaker: Stephen Eales (Cardiff)
Date: Wednesday 4 February 2026
Time: 14:00
Venue: N3.28
The launch of the James Webb Space Telescope and Euclid has meant that it is now possible to follow the morphological evolution of the Hubble Sequence from when it emerged at z~4 (a recent JWST result). I will describe work using submillimetre observations to investigate the evolution of the gas and dust-obscured star formation in galaxies of different morphological types over the last 12 billion years. I show that the high star-formation rates in massive galaxies of all morphological types at 2 \le z \le 4 implies that the morphological transformation of galaxies occurred before the quenching of the star-formation, whereas quenching of the star-formation in massive disk galaxies at 1 \le z \le 2 must have occurred more quickly. I will also present the first estimates of the mean dust density in the universe over the redshift range 0 \le z \le 12 and show that it can be explained by a remarkably simple chemical-evolution model.