[Astro] [CAPT] Astronomy Seminar 9/7/2025

[Jesse Golden-Marx]

Hi Everyone,
      Good Morning!  For those of your here this week, we just wanted to remind you about this week's seminar from Dr. Yara Jaffe, who will be visiting the department from the Wednesday the 9th to Friday the 11th.  The seminar will be at 15:45 in A113 on Wednesday.  Followed by wine and cheese as usual.

The title and abstract can be found below.

Cheers,
Jesse and Luke

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.


Jesse Golden-Marx, Ph.D.
Senior Research Associate

Centre for Astronomy & Particle Theory
School of Physics & Astronomy
University of Nottingham
University Park, Nottingham, UK
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