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We perform a high resolution zoom-in simulation of star cluster assembly including the merger of two sub-clusters with initial conditions taken from previous large scale giant molecular cloud (GMC) simulations. We couple hydrodynamics to…

Astrophysics of Galaxies · Physics 2025-07-04 Jeremy Karam , Michiko S. Fujii , Alison Sills

The high metallicity of the intra-cluster medium (ICM) is generally interpreted on the base of the galactic wind scenario for elliptical galaxies. In this framework, we develop a toy-model to follow the chemical evolution of the ICM,…

Astrophysics · Physics 2007-05-23 L. Portinari , A. Moretti , C. Chiosi

The formation process, properties, and spatial distribution of galaxy groups and clusters are closely related to the background cosmological model. We use numerical simulations of variants of the CDM model with different cosmological…

Astrophysics · Physics 2007-05-23 Alexander Knebe

N-body + hydrodynamical simulations of the formation and evolution of galaxy groups and clusters in a LambdaCDM cosmology are used in order to follow the building-up of the colour-magnitude relation in two clusters and in 12 groups. We have…

We present cosmological hydrodynamical simulations of galaxy clusters aimed at studying the process of metal enrichment of the intra--cluster medium (ICM). These simulations have been performed by implementing a detailed model of chemical…

Astrophysics · Physics 2009-11-13 L. Tornatore , S. Borgani , K. Dolag , F. Matteucci

We introduce a new technique for following the formation and evolution of galaxies in cosmological N-body simulations. Dissipationless simulations are used to track the formation and merging of dark matter halos as a function of redshift.…

We present a set of cluster models that link the present-day properties of clusters to the processes that govern galaxy formation. These models treat the entropy distribution of the intracluster medium as its most fundamental property.…

Astrophysics · Physics 2009-11-07 G. Mark Voit , Greg L. Bryan , Michael L. Balogh , Richard G. Bower

Large volume cosmological simulations succeed in reproducing the large-scale structure of the Universe. However, they lack resolution and may not take into account all relevant physical processes to test if the detail properties of galaxies…

Astrophysics · Physics 2015-05-13 Marie Martig , Frederic Bournaud , Romain Teyssier

Galaxies in clusters are more likely to be of early type and to have lower star formation rates than galaxies in the field. Recent observations and simulations suggest that cluster galaxies may be `pre-processed' by group or filament…

Cosmology and Nongalactic Astrophysics · Physics 2013-09-05 Rukmani Vijayaraghavan , Paul M. Ricker

We compute and study the infrared and sub-mm properties of high redshift ($z \gtrsim 1$) simulated clusters and proto-clusters. The results of a large set of hydro-dynamical zoom-in simulations including active galactic nuclei (AGN)…

We study the impact of stellar winds and supernovae on the multi-phase interstellar medium using three-dimensional hydrodynamical simulations carried out with FLASH. The selected galactic disc region has a size of (500 pc)$^2$ x $\pm$ 5 kpc…

Astrophysics of Galaxies · Physics 2017-01-25 A. Gatto , S. Walch , T. Naab , P. Girichidis , R. Wünsch , S. C. O. Glover , R. S. Klessen , P. C. Clark , T. Peters , D. Derigs , C. Baczynski , J. Puls

Self-consistently modeling baryonic effects in survey-scale cosmological simulations has become increasingly important as the diversity, precision, and statistical reach of modern observations continue to improve. The advent of exascale…

We use two new hydrodynamical simulations of $\Lambda$CDM and $f(R)$ gravity to test the methodology used by Wilcox et al. 2015 (W15) in constraining the effects of a fifth force on the profiles of clusters of galaxies. We construct…

Cosmology and Nongalactic Astrophysics · Physics 2016-10-07 Harry Wilcox , Robert C. Nichol , Gong-bo Zhao , David Bacon , Kazuya Koyama , A. Kathy Romer

We use high-resolution hydrodynamic simulations to investigate the density profile of hot gas in clusters of galaxies, adopting a variant of cold dark matter cosmologies and employing a cosmological N-body/smoothed particle hydrodynamics…

Astrophysics · Physics 2009-10-30 Tatsushi Suginohara , Jeremiah P. Ostriker

Stellar feedback plays a key role in galaxy formation by regulating star formation, driving interstellar turbulence and generating galactic scale outflows. Although modern simulations of galaxy formation can resolve scales of 10-100 pc,…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-11 Oscar Agertz , Andrey V. Kravtsov , Samuel N. Leitner , Nickolay Y. Gnedin

From the first stages of star and galaxy formation, non-gravitational processes such as ram pressure stripping, SNs, galactic winds, AGNs, galaxy-galaxy mergers, etc... lead to the enrichment of the IGM in stars, metals as well as dust, via…

Cosmology and Nongalactic Astrophysics · Physics 2009-08-05 E. Pointecouteau , A. Da Silva , A. Catalano , L. Montier , J. Lanoux , M. Roncarelli , M. Giard

Major progress has been made over the last few years in understanding hydrodynamical processes on cosmological scales, in particular how galaxies get their baryons. There is increasing recognition that a large part of the baryons accrete…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-19 Frederic Bournaud

Star formation, together with the associated chemical and energy feedback, is one of the most important processes in galaxy evolution. The star formation activity in galaxies defines and affects many of their fundamental properties, such as…

Astrophysics of Galaxies · Physics 2025-08-14 Ezequiel Lozano , Cecilia Scannapieco , Sebastian E. Nuza

We simulate the formation and evolution of the local galaxy population starting from initial conditions with a smoothed linear density field which matches that derived from the IRAS 1.2 Jy galaxy survey. Our simulations track the formation…

Astrophysics · Physics 2009-11-07 H. Mathis , G. Lemson , V. Springel , G. Kauffmann , S. D. M. White , A. Eldar , A. Dekel

To fully take advantage of the data provided by large-scale structure surveys, we need to quantify the potential impact of baryonic effects, such as feedback from active galactic nuclei (AGN) and star formation, on cosmological observables.…