[Astro] [CAPT] CAPT Weekly Bulletin (w/c 19-01-26)

[Ella Batchelor (staff)]

Tuesdays at 11am, CAPT Foyer – Astro Coffee

Tuesdays at 11.30am, A113 CAPT – Astronomy Journal Club
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Wednesday 21st January at 3.45pm, C4 Physics – Astronomy Weekly Seminar

Prof Rita Tojeiro (St Andrews)
Breaking down the galaxy-halo connection

In the current standard model of structure and galaxy formation, the evolution of galaxies and halos are intrinsically linked. Understanding the galaxy-halo connection is therefore needed for a holistic view of extragalactic astronomy, testing structure formation theories, or inferring cosmological parameters from galaxy surveys. As such, modelling it has been a major effort of the extragalactic and cosmology community for decades. Drawing on my group’s recent work in observations and in simulations, I will consider how to break down the galaxy-halo connection in different physical and time scales. I will focus on the relationship between halo assembly and star-formation histories, stochasticity, and the cosmic web, with the goal of developing new ways in which to test models of the galaxy-halo connection with current and forthcoming surveys.

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Thursday 22nd January at 1pm, A113 CAPT – Astronomy Lunch Talk

Harry Gully

Euclid Q1: The evolution of the ICL fraction



The intracluster light (ICL) fraction and its evolution with redshift can provide constraints on the dominant mechanisms of ICL production. I will present measurements of ICL fractions for a sample of galaxy clusters spanning 0.2 < z < 1.6. Our results show that significant ICL is already in place at z > 1, and there is no clear evidence for evolution in the ICL fraction across this redshift range. This suggests that a significant portion of ICL formation occurs early during cluster assembly, and that its buildup over time tracks the growth of the cluster itself.

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Fridays at 4pm, CAPT Foyer – CAPT Cakes
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If you have any events/visitors you would like included in next week’s bulletin, please let me know.


Best wishes

Ella

Ella Batchelor (she/her)
Administrator

School of Physics & Astronomy

University of Nottingham
A112a Centre for Astronomy & Particle Theory
University Park
Nottingham, NG7 2RD

+44 (0) 115 74 86778 |  nottingham.ac.uk<http://nottingham.ac.uk/>

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