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31 papers · 2 filters
Molecular hydrogen in IllustrisTNG galaxies: carefully comparing signatures of environment with local CO & SFR data
Adam R. H. Stevens, Claudia del P. Lagos, Luca Cortese +7
We examine how the post-processed content of molecular hydrogen (H) in galaxies from the TNG100 cosmological, hydrodynamic simulation changes with environment at , ass…
Evolution of the grain size distribution in Milky Way-like galaxies in post-processed IllustrisTNG simulations
Yu-Hsiu Huang, Hiroyuki Hirashita, Yun-Hsin Hsu +3
We model dust evolution in Milky Way-like galaxies by post-processing the IllustrisTNG cosmological hydrodynamical simulations in order to predict dust-to-gas ratios and grain size…
Galaxy formation with L-GALAXIES: Modelling the environmental dependency of galaxy evolution and comparing with observations
Mohammadreza Ayromlou, Guinevere Kauffmann, Robert M. Yates +2
We present a variation of the recently updated Munich semi-analytical galaxy formation model, L-Galaxies, with a new gas stripping method. Extending earlier work, we directly measu…
Bringing faint active galactic nuclei (AGNs) to light: a view from large-scale cosmological simulations
Adrian P. Schirra, Melanie Habouzit, Ralf S. Klessen +6
The sensitivity of X-ray facilities and our ability to detect fainter active galactic nuclei (AGNs) will increase with the upcoming Athena mission and the AXIS and Lynx concept mis…
Coordinated Assembly of Galaxy Groups and Clusters in the IllustrisTNG Simulations
Meng Gu, Charlie Conroy, Benedikt Diemer +6
Recent stellar population analysis of early-type galaxy spectra has demonstrated that the low-mass galaxies in cluster centers have high [] and old ages characteristic of…
Predictions for the Angular Dependence of Gas Mass Flow Rate and Metallicity in the Circumgalactic Medium
Celine Peroux, Dylan Nelson, Freeke van de Voort +4
We use cosmological hydrodynamical simulations to examine the physical properties of the gas in the circumgalactic media (CGM) of star-forming galaxies as a function of angular ori…
The physical origins and dominant emission mechanisms of Lyman-alpha halos: results from the TNG50 simulation in comparison to MUSE observations
Chris Byrohl, Dylan Nelson, Christoph Behrens +6
Extended Lyman-alpha emission is now commonly detected around high redshift galaxies through stacking and even on individual basis. Despite recent observational advances, the physi…
The stellar halos of ETGs in the IllustrisTNG simulations: II. Accretion, merger history, and dark halo connection
C. Pulsoni, O. Gerhard, M. Arnaboldi +5
Stellar halos in early-type galaxies (ETGs) are shaped by their accretion and merger histories. We use a sample of 1114 ETGs in the TNG100 simulation with stellar masses $10^{10.3}…
The Kinematics and Dark Matter Fractions of TNG50 Galaxies at z=2 from an Observational Perspective
Hannah Übler, Shy Genel, Amiel Sternberg +13
We contrast the gas kinematics and dark matter contents of star-forming galaxies (SFGs) from state-of-the-art cosmological simulations within the CDM framework to observat…
Quenched fractions in the IllustrisTNG simulations: the roles of AGN feedback, environment, and pre-processing
Martina Donnari, Annalisa Pillepich, Gandhali D. Joshi +8
We use the IllustrisTNG simulations to show how the fractions of quenched galaxies vary across different environments and cosmic time, and to quantify the role AGN feedback and pre…
Quenched fractions in the IllustrisTNG simulations: comparison with observations and other theoretical models
Martina Donnari, Annalisa Pillepich, Dylan Nelson +3
We make an in-depth comparison of the IllustrisTNG simulations with observational data on the quenched fractions of central and satellite galaxies, for at…
Gas-phase metallicity gradients of TNG50 star-forming galaxies
Z. S. Hemler, Paul Torrey, Jia Qi +8
We present the radial gas-phase, mass-weighted metallicity profiles and gradients of the TNG50 star-forming galaxy population measured at redshifts 0--3. We investigate the re…
Properties of the ionized CGM and IGM: a comparison of galaxy formation models via the Sunyaev-Zel'dovich effect
S. H. Lim, David Barnes, Mark Vogelsberger +5
We present a comparison of the physical properties of the ionized gas in the circumgalactic (CGM) and intergalactic (IGM) media at between observations and four cosmologic…
Submillimetre galaxies in cosmological hydrodynamical simulations -- an opportunity for constraining feedback models
Christopher C. Hayward, Martin Sparre, Scott C. Chapman +8
Submillimetre galaxies (SMGs) have long posed a challenge for theorists, and self-consistently reproducing the properties of the SMG population in a large-volume cosmological hydro…
The relationship between fine galaxy stellar morphology and star formation activity in cosmological simulations: a deep learning view
Lorenzo Zanisi, Marc Huertas-Company, Francois Lanusse +10
Hydrodynamical simulations of galaxy formation and evolution attempt to fully model the physics that shapes galaxies. The agreement between the morphology of simulated and real gal…
First results from SMAUG: Insights into star formation conditions from spatially-resolved ISM properties in TNG50
Bhawna Motwani, Shy Genel, Greg L. Bryan +11
Physical and chemical properties of the interstellar medium (ISM) at sub-galactic (kpc) scales play an indispensable role in controlling the ability of gas to form stars. As…
Supermassive black holes in cosmological simulations I: M_BH-M_star relation and black hole mass function
Melanie Habouzit, Yuan Li, Rachel S. Somerville +15
The past decade has seen significant progress in understanding galaxy formation and evolution using large-scale cosmological simulations. While these simulations produce galaxies i…
The Angular Momentum of the Circumgalactic Medium in the TNG100 Simulation
Daniel DeFelippis, Shy Genel, Greg L. Bryan +3
We present an analysis of the angular momentum content of the circumgalactic medium (CGM) using TNG100, one of the flagship runs of the IllustrisTNG project. We focus on Milky Way-…
Resolving small-scale cold circumgalactic gas in TNG50
Dylan Nelson, Prateek Sharma, Annalisa Pillepich +6
We use the high-resolution TNG50 cosmological magnetohydrodynamical simulation to explore the properties and origin of cold circumgalactic medium (CGM) gas around massive galaxies…
Comparing galaxy formation in the L-GALAXIES semi-analytical model and the IllustrisTNG simulations
Mohammadreza Ayromlou, Dylan Nelson, Robert M. Yates +3
We perform a comparison, object-by-object and statistically, between the Munich semi-analytical model, L-Galaxies, and the IllustrisTNG hydrodynamical simulations. By running L-Gal…
A missing outskirts problem? Comparisons between stellar halos in the Dragonfly Nearby Galaxies Survey and the TNG100 simulation
Allison Merritt, Annalisa Pillepich, Pieter van Dokkum +4
Low surface brightness galactic stellar halos provide a challenging but promising path towards unraveling the past assembly histories of individual galaxies. Here, we present detai…
The stellar halos of ETGs in the IllustrisTNG simulations: the photometric and kinematic diversity of galaxies at large radii
C. Pulsoni, O. Gerhard, M. Arnaboldi +4
We characterize the photometric and kinematic properties of simulated early-type galaxy (ETG) stellar halos, and compare them to observations. We select a sample of ~1200 ETGs in t…
Ejective and preventative: the IllustrisTNG black hole feedback and its effects on the thermodynamics of the gas within and around galaxies
Elad Zinger, Annalisa Pillepich, Dylan Nelson +6
Supermassive black holes (SMBHs) which reside at the centres of galaxies can inject vast amounts of energy into the surrounding gas and are thought to be a viable mechanism to quen…
The fate of disk galaxies in IllustrisTNG clusters
Gandhali D. Joshi, Annalisa Pillepich, Dylan Nelson +5
We study the stellar morphological evolution of disc galaxies within clusters in the TNG50 and TNG100 runs from the IllustrisTNG simulation suite. We select satellites of masses $1…