[Astro] Astronomy Seminar today

[Alfonso Aragon-Salamanca]

Hi all,

This is a reminder that we have a seminar today from our visitor (and former Nottingham PhD student) Professor Yara Jaffe, who will be visiting the group until Friday the 11th.

The seminar will be at 15:45 in A113,  followed by wine and cheese as usual.

The title and abstract can be found below.

Best wishes,

Alfonso

Environmental quenching of galaxies across the cosmic web

>From a galaxy's perspective, its environment evolves continuously over cosmic time, as it migrates from low- to high-density regions along the cosmic web. In this talk, I will review our current understanding of how such environmental changes shape galaxy evolution, focusing on both gravitational interactions between galaxies and hydrodynamical processes involving the surrounding intragroup or intracluster medium. I will highlight recent discoveries of galaxies caught in the act of transformation, most notably the striking "jellyfish" galaxies, which are undergoing dramatic gas stripping due to intense ram-pressure.

A key challenge in this field is disentangling the cumulative impact of different environmental mechanisms, especially considering that galaxies may be "pre-processed" in groups and filaments before falling into massive clusters. To address this complexity, we are leading the CHANCES survey, a major 4MOST program designed to systematically explore galaxy transformation across a wide range of environments and redshifts. I will present some early results and discuss future perspectives.

Alfonso Aragón-Salamanca
Professor of Astronomy

School of Physics and Astronomy
University of Nottingham
Room B106b, Centre for Astronomy and Particle Theory
University Park
Nottingham, NG7 2RD, UK

+44 (0) 115 95 16230 | alfonso.aragon at nottingham.ac.uk<mailto:alfonso.aragon at nottingham.ac.uk>
URL: http://nottingham.ac.uk/physics/people/alfonso.aragon
General teaching enquiries physics-teaching at nottingham.ac.uk<mailto:physics-teaching at nottingham.ac.uk>




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