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astro-ph.GA2025

Jellyfish galaxies with the IllustrisTNG simulations -- Supermassive black hole activity in dense environments with ram-pressure stripped satellites

Shalini Kurinchi-Vendhan, Eric Rohr, Annalisa Pillepich +3

Jellyfish galaxies are extreme examples of how galaxies can transform due to dense environmental effects. These satellite galaxies suffer from ram-pressure stripping, leading to th…

astro-ph.GA2025

The abundance and origin of cool gas in galaxy clusters in the TNG-Cluster simulation

Milan Staffehl, Dylan Nelson, Mohammadreza Ayromlou +2

In addition to the hot intracluster medium, massive galaxy clusters host complex, multi-phase gaseous halos. In this work, we quantify the abundance, spatial distribution, and orig…

astro-ph.GA2025

The cooler past of the intracluster medium in TNG-Cluster

Eric Rohr, Annalisa Pillepich, Dylan Nelson +3

The intracluster medium (ICM) today is comprised largely of hot gas with clouds of cooler gas of unknown origin and lifespan. We analyze the evolution of cool gas (temperatures $\l…

astro-ph.GA2024

The hot circumgalactic media of massive cluster satellites in the TNG-Cluster simulation: existence and detectability

Eric Rohr, Annalisa Pillepich, Dylan Nelson +2

The most massive galaxy clusters in the Universe host hundreds of massive satellite galaxies~$\mstar\sim10^{10-12.5} msun$, but it is unclear if these satellites are able to retain…

astro-ph.GA2024

Jellyfish galaxies with the IllustrisTNG simulations -- When, where, and for how long does ram pressure stripping of cold gas occur?

Eric Rohr, Annalisa Pillepich, Dylan Nelson +3

Jellyfish galaxies are prototypical examples of satellite galaxies undergoing strong ram pressure stripping (RPS). We analyze the evolution of 512 unique, first-infalling jellyfish…

astro-ph.GA2024

The galaxy-halo size relation of low-mass galaxies in FIRE

Eric Rohr, Robert Feldmann, James Bullock +7

Galaxy sizes correlate closely with the sizes of their parent dark matter haloes, suggesting a link between halo formation and galaxy growth. However, the precise nature of this re…