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The abundance, distribution, and physical nature of highly ionized oxygen OVI, OVII, and OVIII in IllustrisTNG
Dylan Nelson, Guinevere Kauffmann, Annalisa Pillepich +8
We explore the abundance, spatial distribution, and physical properties of the OVI, OVII, and OVIII ions of oxygen in circumgalactic and intergalactic media (the CGM, IGM, and WHIM…
Similar star formation rate and metallicity evolution timescales drive the fundamental metallicity relation
Paul Torrey, Mark Vogelsberger, Lars Hernquist +10
The fundamental metallicity relation (FMR) is a postulated correlation between galaxy stellar mass, star formation rate (SFR), and gas-phase metallicity. At its core, this relation…
Probing the Hot X-ray Corona around the Massive Spiral Galaxy, NGC 6753, Using Deep XMM-Newton observations
Akos Bogdan, Herve Bourdin, William R. Forman +4
X-ray emitting gaseous coronae around massive galaxies are a basic prediction of galaxy formation models. Although the coronae around spiral galaxies offer a fundamental test of th…
The evolution of the mass-metallicity relation in IllustrisTNG
Paul Torrey, Mark Vogelsberger, Federico Marinacci +8
The coevolution of galaxies and their metal content serves as an important test for galaxy feedback models. We analyze the distribution and evolution of metals within the Illustris…
Single Sources in the Low-Frequency Gravitational Wave Sky: properties and time to detection by pulsar timing arrays
Luke Zoltan Kelley, Laura Blecha, Lars Hernquist +2
We calculate the properties, occurrence rates and detection prospects of individually resolvable 'single sources' in the low frequency gravitational wave (GW) spectrum. Our simulat…
Supermassive black holes and their feedback effects in the IllustrisTNG simulation
Rainer Weinberger, Volker Springel, Rüdiger Pakmor +8
We study the population of supermassive black holes (SMBHs) and their effects on massive central galaxies in the IllustrisTNG cosmological hydrodynamical simulations of galaxy form…
A census of cool core galaxy clusters in IllustrisTNG
David J. Barnes, Mark Vogelsberger, Rahul Kannan +10
The thermodynamic structure of hot gas in galaxy clusters is sensitive to astrophysical processes and typically difficult to model with galaxy formation simulations. We explore the…
Galaxies with Shells in the Illustris Simulation: Metallicity Signatures
Ana-Roxana Pop, Annalisa Pillepich, Nicola C. Amorisco +1
Stellar shells are low surface brightness arcs of overdense stellar regions, extending to large galactocentric distances. In a companion study, we identified 39 shell galaxies in a…
The Size Evolution of Star-forming and Quenched Galaxies in the IllustrisTNG simulation
Shy Genel, Dylan Nelson, Annalisa Pillepich +8
We analyze scaling relations and evolution histories of galaxy sizes in TNG100, part of the IllustrisTNG simulation suite. Observational qualitative trends of size with stellar mas…
The uniformity and time-invariance of the intra-cluster metal distribution in galaxy clusters from the IllustrisTNG simulations
Mark Vogelsberger, Federico Marinacci, Paul Torrey +8
The distribution of metals in the intra-cluster medium encodes important information about the enrichment history and formation of galaxy clusters. Here we explore the metal conten…
First results from the IllustrisTNG simulations: the stellar mass content of groups and clusters of galaxies
Annalisa Pillepich, Dylan Nelson, Lars Hernquist +8
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…
First results from the IllustrisTNG simulations: A tale of two elements -- chemical evolution of magnesium and europium
Jill P. Naiman, Annalisa Pillepich, Volker Springel +9
The distribution of elements in galaxies provides a wealth of information about their production sites and their subsequent mixing into the interstellar medium. Here we investigate…
First results from the IllustrisTNG simulations: matter and galaxy clustering
Volker Springel, Rüdiger Pakmor, Annalisa Pillepich +8
Hydrodynamical simulations of galaxy formation have now reached sufficient volume to make precision predictions for clustering on cosmologically relevant scales. Here we use our ne…
First results from the IllustrisTNG simulations: radio haloes and magnetic fields
Federico Marinacci, Mark Vogelsberger, Rüdiger Pakmor +8
We introduce the IllustrisTNG project, a new suite of cosmological magnetohydrodynamical simulations performed with the moving-mesh code AREPO employing an updated Illustris galaxy…
First results from the IllustrisTNG simulations: the galaxy color bimodality
Dylan Nelson, Annalisa Pillepich, Volker Springel +9
We introduce the first two simulations of the IllustrisTNG project, a next generation of cosmological magnetohydrodynamical simulations, focusing on the optical colors of galaxies.…
Unveiling the Role of the Magnetic Field at the Smallest Scales of Star Formation
Charles L. H. Hull, Philip Mocz, Blakesley Burkhart +7
We report ALMA observations of polarized dust emission from the protostellar source Ser-emb 8 at a linear resolution of 140 au. Assuming models of dust-grain alignment hold, the ob…
Formation and Incidence of Shell Galaxies in the Illustris Simulation
Ana-Roxana Pop, Annalisa Pillepich, Nicola C. Amorisco +1
Shells are low surface brightness tidal debris that appear as interleaved caustics with large opening angles, often situated on both sides of the galaxy center. In this paper, we s…
Radiative effects during the assembly of direct collapse black holes
Aaron Smith, Fernando Becerra, Volker Bromm +1
We perform a post-processing radiative feedback analysis on a 3D ab initio cosmological simulation of an atomic cooling halo under the direct collapse black hole (DCBH) scenario. W…
Gas Cooling in Hydrodynamic Simulations with An Exact Time Integration Scheme
Qirong Zhu, Britton Smith, Lars Hernquist
We implement and test the exact time integration method proposed by Townsend 2009 for gas cooling in cosmological hydrodynamic simulations. The errors using this time integrator fo…
Galaxy Formation with BECDM: I. Turbulence and relaxation of idealised haloes
Philip Mocz, Mark Vogelsberger, Victor Robles +4
We present a theoretical analysis of some unexplored aspects of relaxed Bose-Einstein condensate dark matter (BECDM) haloes. This type of ultralight bosonic scalar field dark matte…
Simulating Galaxy Formation with the IllustrisTNG Model
Annalisa Pillepich, Volker Springel, Dylan Nelson +8
We introduce an updated physical model to simulate the formation and evolution of galaxies in cosmological, large-scale gravity+magnetohydrodynamical simulations with the moving me…
Offsets between member galaxies and dark matter in clusters: a test with the Illustris simulation
Karen Y. Ng, Annalisa Pillepich, David Wittman +3
Dark matter with a non-zero self-interacting cross section () has been posited as a solution to a number of outstanding astrophysical mysteries. Many studies of mergi…
Mapping substructure in the HST Frontier Fields cluster lenses and in cosmological simulations
Priyamvada Natarajan, Urmila Chadayammuri, Mathilde Jauzac +14
We map the lensing-inferred substructure in the first three clusters observed by the Hubble Space Telescope Frontier Fields Initiative (HSTFF): Abell 2744 (z = 0.308), MACSJ0416, (…
Moving mesh simulations of star forming cores in magneto-gravo-turbulence
Philip Mocz, Blakesley Burkhart, Lars Hernquist +2
Star formation in our Galaxy occurs in molecular clouds that are self-gravitating, highly turbulent, and magnetized. We study the conditions under which cloud cores inherit large-s…