Disparate Effects of Circumgalactic Medium Angular Momentum in IllustrisTNG and SIMBA

Abstract

In this study, we examine the role of circumgalactic medium (CGM) angular momentum ($j_{\mathrm{CGM}}$) on star formation in galaxies, whose influence is currently not well understood. The analysis utilises central galaxies from two hydrodynamical simulations, SIMBA and IllustrisTNG. We observe a substantial divergence in how star formation rates correlate with CGM angular momentum between the two simulations. Specifically, quenched galaxies in IllustrisTNG show high $j_{\mathrm{CGM}}$, while in SIMBA, quenched galaxies have low $j_{\mathrm{CGM}}$. This difference is attributed to the distinct active galactic nucleus (AGN) feedback mechanisms active in each simulation. Moreover, both simulations demonstrate similar correlations between $j_{\mathrm{CGM}}$ and environmental angular momentum ($j_{\mathrm{Env}}$) in star-forming galaxies, but these correlations change notably when kinetic AGN feedback is present. In IllustrisTNG, quenched galaxies consistently show higher $j_{\mathrm{CGM}}$ compared to their star-forming counterparts with the same $j_{\mathrm{Env}}$, a trend not seen in SIMBA. Examining different AGN feedback models in SIMBA, we further confirm that AGN feedback significantly influences the CGM gas distribution, although the relationship between the cold gas fraction and the star formation rate (SFR) remains largely stable across different feedback scenarios.

arXiv commentAccepted by A&A

References in corpus (39)

• Star Formation in Galaxies Along the Hubble Sequence
• E pur si muove: Galiliean-invariant cosmological hydrodynamical simulations on a moving mesh
• How Do Galaxies Get Their Gas?
• Introducing the Illustris Project: Simulating the coevolution of dark and visible matter in the Universe
• The Formation of Galactic Disks
• Simulating Galaxy Formation with the IllustrisTNG Model
• First results from the IllustrisTNG simulations: matter and galaxy clustering
• First results from the IllustrisTNG simulations: the galaxy color bimodality
• First results from the IllustrisTNG simulations: A tale of two elements -- chemical evolution of magnesium and europium
• Simulating galaxy formation with black hole driven thermal and kinetic feedback
• GIZMO: A New Class of Accurate, Mesh-Free Hydrodynamic Simulation Methods
• Simba: Cosmological Simulations with Black Hole Growth and Feedback
• First Results from the TNG50 Simulation: Galactic outflows driven by supernovae and black hole feedback
• A universal angular momentum profile for galactic halos
• The SAURON project -- IX. A kinematic classification for early-type galaxies
• The SAURON project. I. The panoramic integral-field spectrograph
• The SAURON project -- X. The orbital anisotropy of elliptical and lenticular galaxies: revisiting the (V/sigma,epsilon) diagram with integral-field stellar kinematics
• On the evolution of the HI column density distribution in cosmological simulations
• The Arecibo Legacy Fast ALFA Survey: The ALFALFA Extragalactic HI Source Catalog
• A Comparison of Methods for Determining the Molecular Content of Model Galaxies
• Angular momentum and galaxy formation revisited
• An Analytic Model of Angular Momentum Transport by Gravitational Torques: From Galaxies to Massive Black Holes
• Gravitational torque-driven black hole growth and feedback in cosmological simulations
• Angular Momentum and Galaxy Formation Revisited: Effects of Variable Mass-to-light Ratios
• The Millennium Galaxy Catalogue: The luminosity functions of bulges and discs and their implied stellar mass densities
• Torque-Limited Growth of Massive Black Holes in Galaxies Across Cosmic Time
• Disk Growth and Quenching
• Angular Momentum Regulates Atomic Gas Fractions of Galactic Disks
• A relation between characteristic stellar age of galaxies and their intrinsic shape
• The Low Redshift Circumgalactic Medium in Simba
• The HIX galaxy survey II: HI kinematics of HI eXtreme galaxies
• Star Formation and Quenching of Central Galaxies from Stacked HI Measurements
• From large-scale environment to CGM angular momentum to star forming activities -- I: star-forming galaxies
• Spatially Resolved Studies of Local Massive Red Spiral Galaxies
• Effects of Active Galactic Nucleus Feedback on Cold Gas Depletion and Quenching of Central Galaxies
• Towards an Understanding of the Massive Red Spiral Galaxy Formation
• Resolved HI Imaging of a Population of Massive HI-Rich Galaxies with Suppressed Star Formation
• Cold Gas Reservoirs of Low- and High-mass Central Galaxies Differ in Response to Active Galactic Nucleus Feedback
• HI content of massive red spiral galaxies observed by FAST

Cited by in corpus (3)

• NeutralUniverseMachine: How Filaments and Dark Matter Halo Influence the Galaxy Cold Gas Content
• Kinematic scaling relations of disc galaxies from ionised gas at $z\sim 1$ and their connection with dark matter haloes
• Investigating the residuals in the $M_{\bullet }-M_{\ast }$ relation using the SIMBA cosmological simulation