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Galaxy interactions in IllustrisTNG-100, I: The power and limitations of visual identification
Kelly Blumenthal, Jorge Moreno, Joshua E. Barnes +6
We present a sample of 446 galaxy pairs constructed using the cosmological simulation IllustrisTNG-100 at z = 0, with M = 10-10 M. We produce…
Early-type galaxy density profiles from IllustrisTNG: II. Evolutionary trend of the total density profile
Yunchong Wang, Mark Vogelsberger, Dandan Xu +8
We study the evolutionary trend of the total density profile of early-type galaxies (ETGs) in IllustrisTNG. To this end, we trace ETGs from to and measure the power-law…
Galaxy Formation with BECDM -- II. Cosmic Filaments and First Galaxies
Philip Mocz, Anastasia Fialkov, Mark Vogelsberger +11
Bose-Einstein Condensate Dark Matter (BECDM; also known as Fuzzy Dark Matter) is motivated by fundamental physics and has recently received significant attention as a serious alter…
X-ray Signatures of Black Hole Feedback: Hot Galactic Atmospheres in IllustrisTNG and X-ray Observations
Nhut Truong, Annalisa Pillepich, Norbert Werner +6
Hot gaseous atmospheres that permeate galaxies and extend far beyond their stellar distribution, where they are commonly referred to as the circumgalactic medium (CGM), imprint imp…
Limitations to the "basic'' HOD model and beyond
Boryana Hadzhiyska, Sownak Bose, Daniel Eisenstein +2
We make use of the IllustrisTNG cosmological, hydrodynamical simulations to test fundamental assumptions of the mass-based Halo Occupation Distribution (HOD) approach to modelling…
Simulating the interstellar medium of galaxies with radiative transfer, non-equilibrium thermochemistry, and dust
Rahul Kannan, Federico Marinacci, Mark Vogelsberger +4
We present a novel framework to self-consistently model the effects of radiation fields, dust physics and molecular chemistry (H) in the interstellar medium (ISM) of galaxies.…
Deep learning predictions of galaxy merger stage and the importance of observational realism
Connor Bottrell, Maan H. Hani, Hossen Teimoorinia +7
Machine learning is becoming a popular tool to quantify galaxy morphologies and identify mergers. However, this technique relies on using an appropriate set of training data to be…
First star-forming structures in fuzzy cosmic filaments
Philip Mocz, Anastasia Fialkov, Mark Vogelsberger +10
In hierarchical models of structure formation, the first galaxies form in low-mass dark matter potential wells, probing the behavior of dark matter on kiloparsec (kpc) scales. Even…
Correlations Between Black Holes and Host Galaxies in the Illustris and IllustrisTNG Simulations
Yuan Li, Melanie Habouzit, Shy Genel +11
We study black hole - host galaxy correlations, and the relation between the over-massiveness (the distance from the average relation) of super-massive black holes (SMBH…
Identifying kinematic structures in simulated galaxies using unsupervised machine learning
Min Du, Luis C. Ho, Dongyao Zhao +4
Galaxies host a wide array of internal stellar components, which need to be decomposed accurately in order to understand their formation and evolution. While significant progress h…
The Formation of Ultra-Diffuse Galaxies in Clusters
Laura V. Sales, Julio F. Navarro, Louis Penafiel +3
We use the IllustrisTNG cosmological hydrodynamical simulation to study the formation of ultra-diffuse galaxies (UDGs) in galaxy clusters. We supplement the simulations with a real…
The buildup of strongly barred galaxies in the TNG100 simulation
Yetli Rosas-Guevara, Silvia Bonoli, Massimo Dotti +7
We analyse the properties of strongly barred disc galaxies using the TNG100 simulation, a cosmological hydrodynamical realisation of the IllustrisTNG suite. We identify 270 disc ga…
Imprints of temperature fluctuations on the Lyman- forest: a view from radiation-hydrodynamic simulations of reionization
Xiaohan Wu, Matthew McQuinn, Rahul Kannan +5
Reionization leads to large spatial fluctuations in the intergalactic temperature that can persist well after its completion. We study the imprints of such fluctuations on the $z\s…
Baryons in the CosmicWeb of IllustrisTNG -- II: the Connection among Galaxies, Halos, their Formation Time and their Location in the Cosmic Web
Davide Martizzi, Mark Vogelsberger, Paul Torrey +4
The connections among galaxies, the dark matter halos where they form and the properties of the large-scale Cosmic Web still need to be completely disentangled. We use the cosmolog…
The relationship between black hole mass and galaxy properties: Examining the black hole feedback model in IllustrisTNG
Bryan A. Terrazas, Eric F. Bell, Annalisa Pillepich +8
Supermassive black hole feedback is thought to be responsible for the lack of star formation, or quiescence, in a significant fraction of galaxies. We explore how observable correl…
Antlia2's role in driving the ripples in the outer gas disk of the Galaxy
Sukanya Chakrabarti, Philip Chang, Adrian Price-Whelan +3
We employ the earlier published proper motions of the newly discovered Antlia 2 dwarf galaxy derived from Gaia data to calculate its orbital distribution in the cosmologically rece…
Redshift Evolution of the Fundamental Plane Relation in the IllustrisTNG Simulation
Shengdong Lu, Dandan Xu, Yunchong Wang +7
We investigate the fundamental plane (FP) evolution of early-type galaxies in the IllustrisTNG-100 simulation (TNG100) from redshift to . We find that a tight plane rela…
A study of stellar orbit fractions: simulated IllustrisTNG galaxies compared to CALIFA observations
Dandan Xu, Ling Zhu, Robert Grand +16
Motivated by the recently discovered kinematic "Hubble sequence" shown by the stellar orbit-circularity distribution of 260 CALIFA galaxies, we make use of a comparable galaxy samp…
Revealing the galaxy-halo connection in IllustrisTNG
Sownak Bose, Daniel J. Eisenstein, Lars Hernquist +5
We use the IllustrisTNG (TNG) simulations to explore the galaxy-halo connection as inferred from state-of-the-art cosmological, magnetohydrodynamical simulations. With the high mas…
The morphology and kinematics of the gaseous circumgalactic medium of Milky Way mass galaxies -- II. comparison of IllustrisTNG and Illustris simulation results
Guinevere Kauffmann, Dylan Nelson, Sanchayeeta Borthakur +5
We have carried out a controlled comparison of the structural and kinematic properties of the circumgalactic medium (CGM) around Milky Way mass galaxies in the Illustris and Illust…
High redshift JWST predictions from IllustrisTNG: Dust modelling and galaxy luminosity functions
Mark Vogelsberger, Dylan Nelson, Annalisa Pillepich +8
The James Webb Space Telescop (JWST) promises to revolutionise our understanding of the early Universe, and contrasting its upcoming observations with predictions of the CDM mod…
Morphology and star formation in IllustrisTNG: the build-up of spheroids and discs
Sandro Tacchella, Benedikt Diemer, Lars Hernquist +8
Using the IllustrisTNG simulations, we investigate the connection between galaxy morphology and star formation in central galaxies with stellar masses in the range $10^9-10^{11.5}~…
Separate Universe Simulations with IllustrisTNG: baryonic effects on power spectrum responses and higher-order statistics
Alexandre Barreira, Dylan Nelson, Annalisa Pillepich +5
We measure power spectrum response functions in the presence of baryonic physical processes using separate universe simulations with the IllustrisTNG galaxy formation model. The re…
Imprint of Drivers of Galaxy Formation in the Circumgalactic Medium
Benjamin D. Oppenheimer, Juna Kollmeier, Andrey Kravtsov +16
The majority of baryons reside beyond the optical extent of a galaxy in the circumgalactic and intergalactic media (CGM/IGM). Gaseous halos are inextricably linked to the appearanc…