The Auriga Project: the properties and formation mechanisms of disc galaxies across cosmic time
Robert J. J. Grand,Robert J. J. Grand,Facundo A. Gómez,Federico Marinacci,Rüdiger Pakmor,Volker Springel,Volker Springel,David J. R. Campbell,Carlos S. Frenk,Adrian Jenkins,Simon D. M. White +10 more
TLDR
In this article, a suite of 30 cosmological magneto-hydrodynamical zoom simulations of the formation of galaxies in isolated Milky Way mass dark haloes are presented.Abstract:
We introduce a suite of 30 cosmological magneto-hydrodynamical zoom simulations of the formation of galaxies in isolated Milky Way mass dark haloes. These were carried out with the moving mesh code arepo, together with a comprehensive model for galaxy formation physics, including active galactic nuclei (AGN) feedback and magnetic fields, which produces realistic galaxy populations in large cosmological simulations. We demonstrate that our simulations reproduce a wide range of present-day observables, in particular, two-component disc-dominated galaxies with appropriate stellar masses, sizes, rotation curves, star formation rates and metallicities. We investigate the driving mechanisms that set present-day disc sizes/scalelengths, and find that they are related to the angular momentum of halo material. We show that the largest discs are produced by quiescent mergers that inspiral into the galaxy and deposit high-angular momentum material into the pre-existing disc, simultaneously increasing the spin of dark matter and gas in the halo. More violent mergers and strong AGN feedback play roles in limiting disc size by destroying pre-existing discs and by suppressing gas accretion on to the outer disc, respectively. The most important factor that leads to compact discs, however, is simply a low angular momentum for the halo. In these cases, AGN feedback plays an important role in limiting central star formation and the formation of a massive bulge.read more
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Simulating galaxy formation with the IllustrisTNG model
Annalisa Pillepich,Annalisa Pillepich,Volker Springel,Volker Springel,Dylan Nelson,Shy Genel,Shy Genel,Jill Naiman,Rüdiger Pakmor,Lars Hernquist,Paul Torrey,Mark Vogelsberger,Rainer Weinberger,Federico Marinacci +13 more
TL;DR: In this article, an updated physical model to simulate the formation and evolution of galaxies in cosmological, large-scale gravity+magnetohydrodynamical simulations with the moving mesh code AREPO is introduced.
Journal ArticleDOI
First results from the IllustrisTNG simulations: the stellar mass content of groups and clusters of galaxies
Annalisa Pillepich,Annalisa Pillepich,Dylan Nelson,Lars Hernquist,Volker Springel,Volker Springel,Rüdiger Pakmor,Paul Torrey,Rainer Weinberger,Shy Genel,Shy Genel,Jill Naiman,Federico Marinacci,Mark Vogelsberger +13 more
TL;DR: The IllustrisTNG project as discussed by the authors is a suite of cosmological magneto-hydrodynamical simulations of galaxy formation performed with the Arepo code and updated models for feedback physics.
Journal ArticleDOI
The IllustrisTNG simulations: public data release
Dylan Nelson,Volker Springel,Volker Springel,Volker Springel,Annalisa Pillepich,Vicente Rodriguez-Gomez,Paul Torrey,Paul Torrey,Shy Genel,Mark Vogelsberger,Ruediger Pakmor,Ruediger Pakmor,Federico Marinacci,Federico Marinacci,Rainer Weinberger,Luke Zoltan Kelley,Mark R. Lovell,Mark R. Lovell,Benedikt Diemer,Lars Hernquist +19 more
TL;DR: The full public release of all data from the TNG100 and TNG300 simulations of the IllustrisTNG project is presented in this article, which includes a comprehensive model for galaxy formation physics, and each TNG simulation selfconsistently solves for the coupled evolution of dark matter, cosmic gas, luminous stars, and supermassive black holes from early time to the present day.
Journal ArticleDOI
First results from the TNG50 simulation: galactic outflows driven by supernovae and black hole feedback
Dylan Nelson,Annalisa Pillepich,Volker Springel,Volker Springel,Volker Springel,Rüdiger Pakmor,Rüdiger Pakmor,Rainer Weinberger,Shy Genel,Paul Torrey,Mark Vogelsberger,Federico Marinacci,Lars Hernquist +12 more
TL;DR: The TNG50 volume as mentioned in this paper is the third and final volume of the IllustrisTNG project, which includes a large-scale magnetohydrodynamical simulation of galaxy outflows driven by supernovae.
Journal ArticleDOI
First results from the TNG50 simulation: the evolution of stellar and gaseous discs across cosmic time
Annalisa Pillepich,Dylan Nelson,Volker Springel,Rüdiger Pakmor,Paul Torrey,Rainer Weinberger,Mark Vogelsberger,Federico Marinacci,Federico Marinacci,Shy Genel,Arjen van der Wel,Arjen van der Wel,Lars Hernquist +12 more
TL;DR: In this paper, the authors present a new cosmological, magnetohydrodynamical simulation for galaxy formation, TNG50, which reaches a numerical resolution typical of zoom-in simulations, with a baryonic element mass of 8.5 x 10(4) M-circle dot and an average cell size of 70-140pc in the star-forming regions of galaxies.
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The EAGLE project: Simulating the evolution and assembly of galaxies and their environments
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