It has been shown in previous publications that the TNG100 simulation quantitatively reproduces the observed reduction in each of the total atomic and total molecular hydrogen gas for galaxies within massive halos, i.e.~dense environments. In this Letter, we study how well TNG50 reproduces the resolved effects of a Virgo-like cluster environment on the gas surface densities of satellite galaxies with m∗>109M⊙ and SFR>0.05M⊙yr−1. We select galaxies in the simulation that are analogous to those in the HERACLES and VERTICO surveys, and mock-observe them to the common specifications of the data. Although TNG50 does not quantitatively match the observed gas surface densities in the centers of galaxies, the simulation does qualitatively reproduce the trends of gas truncation and central density suppression seen in VERTICO in both HI and H2. This result promises that modern cosmological hydrodynamic simulations can be used to reliably model the post-infall histories of cluster satellite galaxies.
@article{arxiv.2310.08023,
title = {VERTICO and IllustrisTNG: The spatially resolved effects of environment on galactic gas},
author = {Adam R. H. Stevens and Toby Brown and Benedikt Diemer and Annalisa Pillepich and Lars Hernquist and Dylan Nelson and Yannick M. Bahé and Alessandro Boselli and Timothy A. Davis and Pascal J. Elahi and Sara L. Ellison and María J. Jiménez-Donaire and Ian D. Roberts and Kristine Spekkens and Vicente Villanueva and Adam B. Watts and Christine D. Wilson and Nikki Zabel},
journal= {arXiv preprint arXiv:2310.08023},
year = {2023}
}