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We present an overview of galaxy evolution across cosmic time in the Illustris Simulation. Illustris is an N-body/hydrodynamical simulation that evolves 2*1820^3 resolution elements in a (106.5Mpc)^3 box from cosmological initial conditions…

Cosmology and Nongalactic Astrophysics · Physics 2014-09-26 Shy Genel , Mark Vogelsberger , Volker Springel , Debora Sijacki , Dylan Nelson , Greg Snyder , Vicente Rodriguez-Gomez , Paul Torrey , Lars Hernquist

We present the full public release of all data from the TNG50, TNG100 and TNG300 simulations of the IllustrisTNG project. IllustrisTNG is a suite of large volume, cosmological, gravo-magnetohydrodynamical simulations run with the…

We present a new comprehensive model of the physics of galaxy formation designed for large-scale hydrodynamical simulations of structure formation using the moving mesh code AREPO. Our model includes primordial and metal line cooling with…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-15 Mark Vogelsberger , Shy Genel , Debora Sijacki , Paul Torrey , Volker Springel , Lars Hernquist

The IllustrisTNG project is a new suite of cosmological magneto-hydrodynamical simulations of galaxy formation performed with the Arepo code and updated models for feedback physics. Here we introduce the first two simulations of the series,…

Using a novel machine learning method, we investigate the buildup of galaxy properties in different simulations, and in various environments within a single simulation. The aim of this work is to show the power of this approach at…

Astrophysics of Galaxies · Physics 2023-06-28 Robert McGibbon , Sadegh Khochfar

We introduce the Illustris Project, a series of large-scale hydrodynamical simulations of galaxy formation. The highest resolution simulation, Illustris-1, covers a volume of $(106.5\,{\rm Mpc})^3$, has a dark mass resolution of ${6.26…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-19 Mark Vogelsberger , Shy Genel , Volker Springel , Paul Torrey , Debora Sijacki , Dandan Xu , Gregory F. Snyder , Dylan Nelson , Lars Hernquist

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 quench star-formation in massive galaxies. Here we study the…

Interstellar dust is an important component of the galactic ecosystem, playing a key role in multiple galaxy formation processes. We present a novel numerical framework for the dynamics and size evolution of dust grains implemented in the…

Astrophysics of Galaxies · Physics 2018-05-23 Ryan McKinnon , Mark Vogelsberger , Paul Torrey , Federico Marinacci , Rahul Kannan

We present the dynamical evolution of the dark matter's relaxation response to galaxies and their connection to the astrophysical properties as simulated in the IllustrisTNG suite of cosmological hydrodynamical simulations. Our results show…

Cosmology and Nongalactic Astrophysics · Physics 2025-01-10 Premvijay Velmani , Aseem Paranjape

We study the stellar angular momentum of thousands of galaxies in the Illustris cosmological simulation, which captures gravitational and gas dynamics within galaxies, as well as feedback from stars and black holes. We find that the angular…

We present the full public release of all data from the Illustris simulation project. Illustris is a suite of large volume, cosmological hydrodynamical simulations run with the moving-mesh code Arepo and including a comprehensive set of…

We measure and analyze the inflows and outflows of mass, energy, and metals through the interstellar medium (ISM) and circumgalactic medium (CGM) of galaxies in the IllustrisTNG100 simulations. We identify the dominant feedback mechanism in…

Astrophysics of Galaxies · Physics 2026-03-10 Yossi Oren , Viraj Pandya , Rachel S. Somerville , Shy Genel , Osase Omoruyi , Amiel Sternberg

We present the Feedback Acting on Baryons in Large-scale Environments (FABLE) suite of cosmological hydrodynamical simulations of galaxies, groups and clusters. The simulations use the AREPO moving-mesh code with a set of physical models…

Astrophysics of Galaxies · Physics 2018-07-13 Nicholas A. Henden , Ewald Puchwein , Sijing Shen , Debora Sijacki

We present a multi-epoch analysis of the galaxy populations formed within the cosmological hydrodynamical simulations presented in Vogelsberger et al. (2013). These simulations explore the performance of a recently implemented feedback…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-16 Paul Torrey , Mark Vogelsberger , Shy Genel , Debora Sijacki , Volker Springel , Lars Hernquist

We study the structural evolution of isolated star-forming galaxies in the Illustris TNG100-1 hydrodynamical simulation, with a focus on investigating the growth of the central core density within 2 kpc ($\Sigma_{*,2kpc}$) in relation to…

Astrophysics of Galaxies · Physics 2021-03-24 Dan Walters , Joanna Woo , Sara L. Ellison , Maan H. Hani

We introduce the new cosmological simulation project cosmosTNG, a first-of-its-kind suite of constrained galaxy formation simulations for the universe at Cosmic Noon ($z\sim 2$). cosmosTNG simulates a $0.2$ deg$^2$ patch of the COSMOS field…

Astrophysics of Galaxies · Physics 2025-06-04 Chris Byrohl , Dylan Nelson , Benjamin Horowitz , Khee-Gan Lee , Annalisa Pillepich

We extend a machine learning (ML) framework presented previously to model galaxy formation and evolution in a hierarchical universe using N-body + hydrodynamical simulations. In this work, we show that ML is a promising technique to study…

Astrophysics of Galaxies · Physics 2016-02-17 Harshil M. Kamdar , Matthew J. Turk , Robert J. Brunner

We present a new cosmological, magnetohydrodynamical simulation for galaxy formation: TNG50, the third and final installment of the IllustrisTNG project. TNG50 evolves 2x2160^3 dark-matter particles and gas cells in a volume 50 comoving Mpc…

We introduce the first two simulations of the IllustrisTNG project, a next generation of cosmological magnetohydrodynamical simulations, focusing on the optical colors of galaxies. We explore TNG100, a rerun of the original Illustris box,…

Understanding the evolution of galaxies provides crucial insights into a broad range of aspects in astrophysics, including structure formation and growth, the nature of dark energy and dark matter, baryonic physics, and more. It is,…

Astrophysics of Galaxies · Physics 2023-09-13 Andreas Filipp , Yiping Shu , Ruediger Pakmor , Sherry H. Suyu , Xiaosheng Huang
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