Dr. Angelo George

I am a postdoctoral fellow at the Academia Sinica Institute of Astronomy and Astrophysics (ASIAA) in Taipei, where I study the evolution of galaxies. My research traces how galaxies grow, change shape, and shut down their star formation across the last seven billion years, with a particular focus on how a galaxy’s environment — the difference between living inside a massive cluster and drifting through the field — shapes that history.

Most of my work combines deep imaging from observatories like Subaru, CFHT, HST, JWST, Magellan, and ALMA, with profile-fitting tools such as GALFIT and SourceXtractor++, running at scale on parallel HPC. By measuring galaxy sizes simultaneously in the rest-frame UV (where young stars dominate) and in the optical (which traces the bulk of the stellar mass), I disentangle inside-out growth from genuine structural transformation.

At ASIAA, I am working on four projects in parallel: characterising galaxy quenching with the KILOGAS survey, probing variations of the stellar initial mass function (IMF) using JWST and the Subaru Prime Focus Spectrograph (PFS), disentangling the effects of various physical processes in the galaxy size–mass plane using IllustrisTNG simulations, and modelling the star-forming main sequence in the TNG Universe.

In Summer 2026 I am mentoring two undergraduate researchers — Brian Sng (Durham University) and Cheng-Te Chung (National Tsing Hua University) — as part of the ASIAA Summer Student Program, on galaxy size evolution and the radial distribution of star formation in cosmological simulations.

Before moving to Taipei I completed my PhD (2025) and MSc (2020) at Saint Mary’s University in Halifax, Canada, advised by Drs. Ivana Damjanov and Marcin Sawicki, and a BSc in Physics with Honours from Goa University in India.

Outside of astronomy I’m a nature enthusiast — happiest with a camera, a paintbrush, or my hands in a garden.