Exploring the angular momentum - atomic gas content connection with eagle and IllustrisTNG

Jennifer A. Hardwick; Luca Cortese; Danail Obreschkow; Claudia Lagos; Adam R.H. Stevens; Barbara Catinella; Lilian Garratt-Smithson

doi:10.1093/mnras/stad2805

Exploring the angular momentum - atomic gas content connection with eagle and IllustrisTNG

Jennifer A. Hardwick, Luca Cortese, Danail Obreschkow, Claudia Lagos, Adam R.H. Stevens, Barbara Catinella, Lilian Garratt-Smithson

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

We use the Evolution and Assembly of GaLaxies and their Environments (eagle) and IllustrisTNG (The Next Generation) cosmological simulations to investigate the properties of the baryonic specific angular momentum (j), baryonic mass (M), and atomic gas fraction (f_atm) plane for nearby galaxies. We find EAGLE and TNG to be in excellent agreement with each other. These simulations are also consistent with the results obtained with eXtended GALEX Arecibo SDSS Survey (xGASS) for gas fractions greater than 0.01. This implies that the disagreements previously identified between xGASS and predictions from simple analytical disc stability arguments also holds true for eagle and tng. For lower gas fraction (the regime currently unconstrained by observations), both simulations deviate from the plane but still maintain good agreement with each other. Despite the challenges posed by resolution limits at low gas fractions, our findings suggest a potential disconnect between angular momentum and gas fraction in the gas-poor regime, implying that not all gas-poor galaxies have low specific angular momentum.

Original language	English
Pages (from-to)	808-819
Number of pages	12
Journal	Monthly Notices of the Royal Astronomical Society
Volume	526
Issue number	1
DOIs	https://doi.org/10.1093/mnras/stad2805
Publication status	Published - 1 Nov 2023

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10.1093/mnras/stad2805Licence: CC BY

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@article{c0fe53f1092a4f2fad1c03423474871c,

title = "Exploring the angular momentum - atomic gas content connection with eagle and IllustrisTNG",

abstract = "We use the Evolution and Assembly of GaLaxies and their Environments (eagle) and IllustrisTNG (The Next Generation) cosmological simulations to investigate the properties of the baryonic specific angular momentum (j), baryonic mass (M), and atomic gas fraction (fatm) plane for nearby galaxies. We find EAGLE and TNG to be in excellent agreement with each other. These simulations are also consistent with the results obtained with eXtended GALEX Arecibo SDSS Survey (xGASS) for gas fractions greater than 0.01. This implies that the disagreements previously identified between xGASS and predictions from simple analytical disc stability arguments also holds true for eagle and tng. For lower gas fraction (the regime currently unconstrained by observations), both simulations deviate from the plane but still maintain good agreement with each other. Despite the challenges posed by resolution limits at low gas fractions, our findings suggest a potential disconnect between angular momentum and gas fraction in the gas-poor regime, implying that not all gas-poor galaxies have low specific angular momentum.",

keywords = "galaxies: evolution, galaxies: ISM, galaxies: kinematics and dynamics",

author = "Hardwick, {Jennifer A.} and Luca Cortese and Danail Obreschkow and Claudia Lagos and Stevens, {Adam R.H.} and Barbara Catinella and Lilian Garratt-Smithson",

note = "Funding Information: We thank the anonymous referee for their comments that improved the quality of this manuscript. JAH and LC acknowledge support from the Australian Research Council (FT180100066). Parts of this research were conducted by the Australian Research Council Centre of Excellence for All Sky Astrophysics in 3 Dimensions (ASTRO 3D), through project number CE170100013. DO is a recipient of an Australian Research Council Future Fellowship (FT190100083), funded by the Australian Government. ARHS is funded through the Jim Buckee Fellowship at UWA. We acknowledge the Virgo Consortium for making their simulation data available. The eagle simulations were performed using the DiRAC-2 facility at Durham, managed by the ICC, and the PRACE facility Curie based in France at TGCC, CEA, Bruyeres-le-Chatel. The IllustrisTNG simulations were undertaken with compute time awarded by the Gauss Centre for Supercomputing (GCS) under GCS Large-Scale Projects GCS-ILLU and GCS-DWAR on the GCS share of the supercomputer Hazel Hen at the High Performance Computing Center Stuttgart (HLRS), as well as on the machines of the Max Planck Computing and Data Facility (MPCDF) in Garching, Germany. Publisher Copyright: {\textcopyright} 2023 The Author(s). Published by Oxford University Press on behalf of Royal Astronomical Society.",

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doi = "10.1093/mnras/stad2805",

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AU - Hardwick, Jennifer A.

AU - Cortese, Luca

AU - Obreschkow, Danail

AU - Lagos, Claudia

AU - Stevens, Adam R.H.

AU - Catinella, Barbara

AU - Garratt-Smithson, Lilian

N1 - Funding Information: We thank the anonymous referee for their comments that improved the quality of this manuscript. JAH and LC acknowledge support from the Australian Research Council (FT180100066). Parts of this research were conducted by the Australian Research Council Centre of Excellence for All Sky Astrophysics in 3 Dimensions (ASTRO 3D), through project number CE170100013. DO is a recipient of an Australian Research Council Future Fellowship (FT190100083), funded by the Australian Government. ARHS is funded through the Jim Buckee Fellowship at UWA. We acknowledge the Virgo Consortium for making their simulation data available. The eagle simulations were performed using the DiRAC-2 facility at Durham, managed by the ICC, and the PRACE facility Curie based in France at TGCC, CEA, Bruyeres-le-Chatel. The IllustrisTNG simulations were undertaken with compute time awarded by the Gauss Centre for Supercomputing (GCS) under GCS Large-Scale Projects GCS-ILLU and GCS-DWAR on the GCS share of the supercomputer Hazel Hen at the High Performance Computing Center Stuttgart (HLRS), as well as on the machines of the Max Planck Computing and Data Facility (MPCDF) in Garching, Germany. Publisher Copyright: © 2023 The Author(s). Published by Oxford University Press on behalf of Royal Astronomical Society.

PY - 2023/11/1

Y1 - 2023/11/1

N2 - We use the Evolution and Assembly of GaLaxies and their Environments (eagle) and IllustrisTNG (The Next Generation) cosmological simulations to investigate the properties of the baryonic specific angular momentum (j), baryonic mass (M), and atomic gas fraction (fatm) plane for nearby galaxies. We find EAGLE and TNG to be in excellent agreement with each other. These simulations are also consistent with the results obtained with eXtended GALEX Arecibo SDSS Survey (xGASS) for gas fractions greater than 0.01. This implies that the disagreements previously identified between xGASS and predictions from simple analytical disc stability arguments also holds true for eagle and tng. For lower gas fraction (the regime currently unconstrained by observations), both simulations deviate from the plane but still maintain good agreement with each other. Despite the challenges posed by resolution limits at low gas fractions, our findings suggest a potential disconnect between angular momentum and gas fraction in the gas-poor regime, implying that not all gas-poor galaxies have low specific angular momentum.

AB - We use the Evolution and Assembly of GaLaxies and their Environments (eagle) and IllustrisTNG (The Next Generation) cosmological simulations to investigate the properties of the baryonic specific angular momentum (j), baryonic mass (M), and atomic gas fraction (fatm) plane for nearby galaxies. We find EAGLE and TNG to be in excellent agreement with each other. These simulations are also consistent with the results obtained with eXtended GALEX Arecibo SDSS Survey (xGASS) for gas fractions greater than 0.01. This implies that the disagreements previously identified between xGASS and predictions from simple analytical disc stability arguments also holds true for eagle and tng. For lower gas fraction (the regime currently unconstrained by observations), both simulations deviate from the plane but still maintain good agreement with each other. Despite the challenges posed by resolution limits at low gas fractions, our findings suggest a potential disconnect between angular momentum and gas fraction in the gas-poor regime, implying that not all gas-poor galaxies have low specific angular momentum.

KW - galaxies: evolution

KW - galaxies: ISM

KW - galaxies: kinematics and dynamics

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U2 - 10.1093/mnras/stad2805

DO - 10.1093/mnras/stad2805

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AN - SCOPUS:85174546053

SN - 0035-8711

VL - 526

SP - 808

EP - 819

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 1

ER -

Exploring the angular momentum - atomic gas content connection with eagle and IllustrisTNG

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