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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…
The Formation of the First Quasars. I. The Black Hole Seeds, Accretion and Feedback Models
Qirong Zhu, Yuexing Li, Yiting Li +4
Supermassive black holes (SMBHs) of are generally believed to be the central engines of the luminous quasars observed at , but their astrophysical…
Inferring the Morphology of Stellar Distribution in TNG50: Twisted and Twisted-Stretched shapes
Razieh Emami, Lars Hernquist, Charles Alcock +9
We investigate the morphology of the stellar distribution in a sample of Milky Way (MW) like galaxies in the TNG50 simulation. Using a local in shell iterative method (LSIM) as the…
Hot and counter-rotating star-forming disk galaxies in IllustrisTNG and their real-world counterparts
Shengdong Lu, Dandan Xu, Yunchong Wang +7
A key feature of a large population of low-mass, late-type disk galaxies are star-forming disks with exponential light distributions. They are typically also associated with thin a…
A Framework for Multiphase Galactic Wind Launching using TIGRESS
Chang-Goo Kim, Eve C. Ostriker, Drummond B. Fielding +6
Galactic outflows have density, temperature, and velocity variations at least as large as that of the multiphase, turbulent interstellar medium (ISM) from which they originate. We…
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…
The CAMELS project: Cosmology and Astrophysics with MachinE Learning Simulations
Francisco Villaescusa-Navarro, Daniel Anglés-Alcázar, Shy Genel +19
We present the Cosmology and Astrophysics with MachinE Learning Simulations --CAMELS-- project. CAMELS is a suite of 4,233 cosmological simulations of volu…
Stellar and Weak Lensing Profiles of Massive Galaxies in the Hyper-Suprime Cam Survey and in Hydrodynamic Simulations
Felipe Ardila, Song Huang, Alexie Leauthaud +11
We perform a consistent comparison of the mass and mass profiles of massive () central galaxies at z~0.4 from deep Hyper Suprime-Cam (HSC) observation…
Spatially resolved star formation and fuelling in galaxy interactions
Jorge Moreno, Paul Torrey, Sara L. Ellison +8
We investigate the spatial structure and evolution of star formation and the interstellar medium (ISM) in interacting galaxies. We use an extensive suite of parsec-scale galaxy mer…
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…
Efficient early stellar feedback can suppress galactic outflows by reducing supernova clustering
Matthew C. Smith, Greg L. Bryan, Rachel S. Somerville +4
We present a novel set of stellar feedback models, implemented in the moving-mesh code Arepo, designed for galaxy formation simulations with near-parsec (or better) resolution. The…
DM halo morphological types of MW-like galaxies in the TNG50 simulation: Simple, Twisted, or Stretched
Razieh Emami, Shy Genel, Lars Hernquist +8
We present a comprehensive analysis of the shape of dark matter (DM) halos in a sample of 25 Milky Way-like galaxies in TNG50 simulation. Using an Enclosed Volume Iterative Method…
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}…
Extensions to models of the galaxy-halo connection
Boryana Hadzhiyska, Sownak Bose, Daniel Eisenstein +1
We explore two widely used empirical models for the galaxy-halo connection, subhalo abundance matching (SHAM) and the halo occupation distribution (HOD) and compare their predictio…
Cosmological simulations of quasar fueling to sub-parsec scales using Lagrangian hyper-refinement
Daniel Anglés-Alcázar, Eliot Quataert, Philip Hopkins +7
We present cosmological hydrodynamic simulations of a quasar-mass halo ( at z=2) that for the first time resolve gas transport down…
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…
First results from SMAUG: Characterization of Multiphase Galactic Outflows from a Suite of Local Star-Forming Galactic Disk Simulations
Chang-Goo Kim, Eve C. Ostriker, Rachel S. Somerville +6
Large scale outflows in star-forming galaxies are observed to be ubiquitous, and are a key aspect of theoretical modeling of galactic evolution in a cosmological context, the focus…
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…
The Diversity and Variability of Star Formation Histories in Models of Galaxy Evolution
Kartheik G. Iyer, Sandro Tacchella, Shy Genel +10
Understanding the variability of galaxy star formation histories (SFHs) across a range of timescales provides insight into the underlying physical processes that regulate star form…
Joint galaxy-galaxy lensing and clustering constraints on galaxy formation
Malin Renneby, Bruno M. B. Henriques, Stefan Hilbert +5
We compare predictions for galaxy-galaxy lensing profiles and clustering from the Henriques et al. (2015) public version of the Munich semi-analytical model of galaxy formation (SA…
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…