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Modern observational and analytic techniques now enable the direct measurement of star formation histories and the inference of galaxy assembly histories. However, current theoretical predictions of assembly are not ideally suited for…

Astrophysics of Galaxies · Physics 2020-07-01 Thomas A. Davison , Mark A. Norris , Joel L. Pfeffer , Jonathan J. Davies , Robert A. Crain

We present the public data release of halo and galaxy catalogues extracted from the EAGLE suite of cosmological hydrodynamical simulations of galaxy formation. These simulations were performed with an enhanced version of the GADGET code…

We examine how HI and metal absorption lines within low-redshift galaxy halos trace the dynamical state of circumgalactic gas, using cosmological hydrodynamic simulations that include a well-vetted heuristic model for galactic outflows. We…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-17 Amanda Brady Ford , Romeel Davé , Benjamin D. Oppenheimer , Neal Katz , Juna A. Kollmeier , Robert Thompson , David H. Weinberg

We use the hydrodynamical EAGLE simulation to study the magnitude and origin of the scatter in the stellar mass - halo mass relation for central galaxies. We separate cause and effect by correlating stellar masses in the baryonic simulation…

Astrophysics of Galaxies · Physics 2017-01-18 Jorryt Matthee , Joop Schaye , Robert A. Crain , Matthieu Schaller , Richard Bower , Tom Theuns

We present results of a new feedback scheme implemented in the Munich galaxy formation model. The new scheme includes a dynamical treatment of galactic winds powered by supernovae explosions and stellar winds in a cosmological context. We…

Astrophysics · Physics 2008-11-26 Serena Bertone , Gabriella De Lucia , Peter A. Thomas

Ongoing accretion onto galactic disks has been recently theorized to progress via the unstable cooling of the baryonic halo into condensed clouds. These clouds have been identified as analogous to the High-Velocity Clouds (HVCs) observed in…

Astrophysics · Physics 2009-11-13 J. E. G. Peek , M. E. Putman , Jesper Sommer-Larsen

High-Velocity Clouds (HVCs) are a major fuel reservoir for star formation in the Galactic disk. Determining their origin and kinematics is thus crucial for understanding Galactic evolution. In this paper, we employ simple test-particle…

Astrophysics of Galaxies · Physics 2026-04-28 Izumi Seno , Shu-ichiro Inutsuka , Jiro Shimoda

We use ~100 cosmological galaxy formation zoom-in simulations using the smoothed particle hydrodynamics code {\sc gasoline} to study the effect of baryonic processes on the mass profiles of cold dark matter haloes. The haloes in our study…

We generalize the analytic solutions presented in Pantoni et al. (2019) by including a simple yet effective description of wind recycling and galactic fountains, with the aim of self-consistently investigating the spatially-averaged time…

Astrophysics of Galaxies · Physics 2020-07-15 A. Lapi , L. Pantoni , L. Boco , L. Danese

Galaxies with high star-formation rate surface densities often host large-scale outflows that redistribute energy, momentum, and baryons between the interstellar medium and the halo, making them a key feedback channel regulating galaxy…

Astrophysics of Galaxies · Physics 2025-09-23 Ellis R. Owen , Leonard E. C. Romano , Kentaro Nagamine

To investigate the evolution of dust in a cosmological volume, we perform hydrodynamic simulations, in which the enrichment of metals and dust is treated self-consistently with star formation and stellar feedback. We consider dust evolution…

Astrophysics of Galaxies · Physics 2018-07-24 Shohei Aoyama , Kuan-Chou Hou , Hiroyuki Hirashita , Kentaro Nagamine , Ikkoh Shimizu

We examine the global HI properties of galaxies in quarter-billion particle cosmological simulations using Gadget-2, focusing on how galactic outflows impact HI content. We consider four outflow models, including a new one (ezw) motivated…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-15 Romeel Davé , Neal Katz , Benjamin D. Oppenheimer , Juna A. Kollmeier , David H. Weinberg

We use the hydrodynamic, cosmological EAGLE simulations to investigate how hot gas in haloes condenses to form and grow galaxies. We select haloes from the simulations that are actively cooling and study the temperature, distribution, and…

Stellar and AGN-driven feedback processes affect the distribution of gas on a wide range of scales, from within galaxies well into the intergalactic medium. Yet, it remains unclear how feedback, through its connection to key galaxy…

Astrophysics of Galaxies · Physics 2025-12-15 Daniele Sorini , Sownak Bose , Mathilda Denison , Romeel Davé

Galaxies evolve within vast gaseous halos that fuel star formation and carry signatures of feedback-driven outflows. Deep integral field data have enabled the study of MgII halos, which trace galaxy-scale outflows in emission, but their…

From the scale-free nature of gravity, the structure in the universe is expected to be self-similar on large scales. However, this self-similarity will eventually break down due to small-scale gas physics such as star formation, AGN and…

Cosmology and Nongalactic Astrophysics · Physics 2025-09-17 Benjamin A. Seidel , Rhea-Silvia Remus , Lucas M. Valenzuela , Lucas C. Kimmig , Klaus Dolag

We compare global predictions from the EAGLE hydrodynamical simulation, and two semi-analytic (SA) models of galaxy formation, L-GALAXIES and GALFORM. All three models include the key physical processes for the formation and evolution of…

Galactic outflows are thought to eject baryons back out to the circum-galactic medium (CGM). Studies based on metal absorption lines (MgII in particular) in the spectra of background quasars indicate that the gas is ejected anisotropically,…

We present a theoretical framework for calculating the volume filling fraction of galactic outflows in cosmic voids by integrating analytical models for the halo mass function (HMF), the halo occupation fraction, the stellar mass-halo mass…

Astrophysics of Galaxies · Physics 2025-09-05 Yue Pan , Romain Teyssier , Ulrich P. Steinwandel , Alice Pisani

We present a semi-analytic treatment of galactic winds within high resolution, large scale cosmological N-body simulations of a LCDM Universe. The evolution of winds is investigated by following the expansion of supernova driven…

Astrophysics · Physics 2009-09-25 Serena Bertone , Felix Stoehr , Simon D. M. White