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VERTICO and IllustrisTNG: the spatially resolved effects of environment on galactic gas

From National Research Council Canada

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DOIResolve DOI: https://doi.org/10.3847/2041-8213/ad014b
AuthorSearch for: ORCID identifier: https://orcid.org/0000-0003-1908-2168; Search for: 1ORCID identifier: https://orcid.org/0000-0003-1845-0934; Search for: ORCID identifier: https://orcid.org/0000-0001-9568-7287; Search for: ORCID identifier: https://orcid.org/0000-0003-1065-9274; Search for: ORCID identifier: https://orcid.org/0000-0001-6950-1629; Search for: ORCID identifier: https://orcid.org/0000-0001-8421-5890; Search for: ; Search for: ORCID identifier: https://orcid.org/0000-0002-9795-6433; Search for: ORCID identifier: https://orcid.org/0000-0003-4932-9379; Search for: ORCID identifier: https://orcid.org/0000-0002-6154-7224; Search for: ORCID identifier: https://orcid.org/0000-0002-1768-1899; Search for: ORCID identifier: https://orcid.org/0000-0002-9165-8080; Search for: ORCID identifier: https://orcid.org/0000-0002-0692-0911; Search for: ORCID identifier: https://orcid.org/0000-0002-0956-7949; Search for: ORCID identifier: https://orcid.org/0000-0002-5877-379X; Search for: ORCID identifier: https://orcid.org/0000-0002-9405-0687; Search for: ORCID identifier: https://orcid.org/0000-0001-5817-0991; Search for: ORCID identifier: https://orcid.org/0000-0001-7732-5338
Affiliation
  1. National Research Council of Canada. Herzberg Astronomy and Astrophysics
FormatText, Article
Subjectgalaxy environments; galaxy evolution; interstellar atomic gas; interstellar molecules
Abstract
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 Mₛ > 10⁹M⊙ 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 H₂. This result promises that modern cosmological hydrodynamic simulations can be used to reliably model the post-infall histories of cluster satellite galaxies.
Publication date
PublisherAmerican Astronomical Society
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In
  • The Astrophysical Journal Letters 957, no. 2, L19 (3 November 2023): 1–7.
LanguageEnglish
Peer reviewedYes
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Record identifiera792529d-2cd0-4be3-b3ba-0a3fde05a093
Record created2024-08-12
Record modified2024-08-12
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