Hunting down those responsible for the observed spatial distribution of gas in galaxies at z = 0 - 0.5

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• Benedetta Vulcani (Padova)
• Wednesday 06 June 2018, 14:30-15:30
• Physics West 117.

If you have a question about this talk, please contact Sean McGee.

What physical processes regulate star formation in dense environments? Understanding why galaxy evolution is environment dependent is one of the key questions of current astrophysics. I will present the first characterization of the spatial distribution of star formation on a kpc scale in cluster galaxies at z~0.5, and compare it to a field control sample, in order to quantify the role of different physical processes that are believed to be responsible for shutting down star formation. The analysis makes use of data from the Grism Lens-Amplified Survey from Space (GLASS), a large HST cycle-21 program targeting 10 massive galaxy clusters with extensive HST imaging from CLASH and the Frontier Field Initiative. I will also discuss some preliminary results on the comparisons between observations and cosmological simulations (Illustris TNG ) aimed at understanding the environmental history of galaxies in the different environments.

I will also present some recent results from GASP (GAs Stripping Phenomena in galaxies with MUSE ), and focus on galaxies in sparsest environments. I will show some examples of galaxies in groups or isolated in the Universe and describe the physical processes in action. Characterising where, why and how gas gets removed from galaxies will help us understand galaxy quenching and evolution in general.

This talk is part of the Astrophysics Talks Series series.

This talk is included in these lists:

• Astrophysics Talks Series
• Bham Talks
• Physics West 117
• What's on in Physics?

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