VERTICO and IllustrisTNG: The Spatially Resolved Effects of Environment on Galactic Gas

Adam R. H. Stevens; Toby Brown; Benedikt Diemer; Annalisa Pillepich; Lars Hernquist; Dylan Nelson; Yannick M. Bahé; Alessandro Boselli; Timothy A. Davis; Pascal J. Elahi; Sara L. Ellison; María J. Jiménez-Donaire; Ian D. Roberts; Kristine Spekkens; Vicente Villanueva; Adam B. Watts; Christine D. Wilson; Nikki Zabel

doi:10.3847/2041-8213/ad014b

The Astrophysical Journal Letters (Jan 2023)

VERTICO and IllustrisTNG: The Spatially Resolved Effects of Environment on Galactic Gas

Adam R. H. Stevens,
Toby Brown,
Benedikt Diemer,
Annalisa Pillepich,
Lars Hernquist,
Dylan Nelson,
Yannick M. Bahé,
Alessandro Boselli,
Timothy A. Davis,
Pascal J. Elahi,
Sara L. Ellison,
María J. Jiménez-Donaire,
Ian D. Roberts,
Kristine Spekkens,
Vicente Villanueva,
Adam B. Watts,
Christine D. Wilson,
Nikki Zabel

Affiliations

Adam R. H. Stevens: ORCiD; International Centre for Radio Astronomy Research, The University of Western Australia , Crawley, WA 6009, Australia
Toby Brown: ORCiD; Herzberg Astronomy and Astrophysics Research Centre , National Research Council of Canada, Victoria, BC, V9E 2E7, Canada
Benedikt Diemer: ORCiD; Department of Astronomy, University of Maryland , College Park, MD 20742, USA
Annalisa Pillepich: ORCiD; Max-Planck-Institut für Astronomie , D-69117 Heidelberg, Baden-Wúrttemburg, Germany
Lars Hernquist: ORCiD; Institute for Theory and Computation , Harvard–Smithsonian Center for Astrophysics, Cambridge, MA 02138, USA
Dylan Nelson: ORCiD; Institut für theoretische Astrophysik, Zentrum für Astronomie, Universität Heidelberg , D-69120 Heidelberg, Baden-Württemburg, Germany
Yannick M. Bahé: Institute of Physics, Laboratory of Astrophysics, Ecole Polytechnique Fédérale de Lausanne (EPFL), Observatoire de Sauverny , 1290 Versoix, Switzerland; Leiden Observatory, Leiden University , P.O. Box 9513, NL-2300 RA Leiden, The Netherlands
Alessandro Boselli: ORCiD; Aix-Marseille Université , CNRS, CNES, LAM, Marseille, France
Timothy A. Davis: ORCiD; Cardiff Hub for Astrophysics Research & Technology, School of Physics & Astronomy, Cardiff University , Queens Buildings, Cardiff, CF24 3AA, UK
Pascal J. Elahi: ORCiD; Pawsey Supercomputing Centre , Kensington, WA 6151, Australia
Sara L. Ellison: ORCiD; Department of Physics & Astronomy, University of Victoria , Finnerty Road, Victoria, BC V8P 1A1, Canada
María J. Jiménez-Donaire: ORCiD; Department of Astronomy, University of Maryland , College Park, MD 20742, USA; Observatorio Astronómico Nacional (IGN) , C/Alfonso XII, 3, E-28014 Madrid, Spain
Ian D. Roberts: ORCiD; Leiden Observatory, Leiden University , P.O. Box 9513, NL-2300 RA Leiden, The Netherlands
Kristine Spekkens: ORCiD; Royal Military College of Canada , P.O. Box 17000, Station Forces, Kingston, ON, K7K 7B4, Canada
Vicente Villanueva: ORCiD; Department of Astronomy, University of Maryland , College Park, MD 20742, USA
Adam B. Watts: ORCiD; International Centre for Radio Astronomy Research, The University of Western Australia , Crawley, WA 6009, Australia
Christine D. Wilson: ORCiD; Department of Physics & Astronomy, McMaster University , 1280 Main Street W, Hamilton, ON, L8S 4M1, Canada
Nikki Zabel: ORCiD; Department of Astronomy, University of Cape Town , Private Bag X3, Rondebosch 7701, South Africa

DOI: https://doi.org/10.3847/2041-8213/ad014b
Journal volume & issue: Vol. 957, no. 2
p. L19

Abstract

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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 _* > 10 ^9 M _⊙ and star formation rate > 0.05 M _⊙ 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 H i and H _2 . This result promises that modern cosmological hydrodynamic simulations can be used to reliably model the post-infall histories of cluster satellite galaxies.

Published in The Astrophysical Journal Letters

ISSN: 2041-8205 (Print); 2041-8213 (Online)
Publisher: IOP Publishing
Country of publisher: United Kingdom
LCC subjects: Science: Astronomy: Astrophysics
Website: https://iopscience.iop.org/journal/2041-8205

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