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Any successful model of galaxy formation needs to explain the low rate of star formation in the small progenitors of today's galaxies. This inefficiency is necessary for reproducing the low stellar-to-virial mass fractions, suggested by…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-16 Daniel Ceverino , Anatoly Klypin , Elizabeth Klimek , Sebastian Trujillo-Gomez , Christopher W. Churchill , Joel Primack , Avishai Dekel

Using hydrodynamic simulations of disc-galaxy major mergers, we investigate the star formation history and remnant properties when various parametrizations of a simple stellar feedback model are implemented. The simulations include…

Astrophysics · Physics 2007-09-25 T. J. Cox , Patrik Jonsson , Joel R. Primack , Rachel S. Somerville

We present a novel method for including the effects of early (pre-supernova) feedback in simulations of galaxy evolution. Rather than building a model which attempts to match idealized, small-scale simulations or analytic approximations, we…

Astrophysics of Galaxies · Physics 2022-06-29 Benjamin W. Keller , J. M. Diederik Kruijssen , Mélanie Chevance

We study how outflows of gas launched from a central galaxy undergoing repeated starbursts propagate through the circumgalactic medium (CGM), using the simulation code RAMSES. We assume that the outflow from the disk can be modelled as a…

Astrophysics of Galaxies · Physics 2016-08-17 Teresita Suarez , Andrew Pontzen , Hiranya V. Peiris , Adrianne Slyz , Julien Devriendt

We study the effects of radiative cooling, star formation and stellar feedback on the properties and evolution of galaxy clusters using high-resolution Adaptive Mesh Refinement N-body+gasdynamics simulations of clusters forming in the LCDM…

Astrophysics · Physics 2009-11-10 Daisuke Nagai , Andrey V. Kravtsov

We investigate the impact of galactic outflow modelling on the formation and evolution of a disc galaxy, by performing a suite of cosmological simulations with zoomed-in initial conditions of a Milky Way-sized halo. We verify how sensitive…

Stellar feedback, star formation and gravitational interactions are major controlling forces in the evolution of Giant Molecular Clouds (GMCs). To explore their relative roles, we examine the properties and evolution of GMCs forming in an…

Astrophysics of Galaxies · Physics 2015-06-23 Elizabeth J. Tasker , James Wadsley , Ralph Pudritz

A variety of physical heating mechanisms are combined with radiative cooling to explore, via one dimensional hydrodynamic simulations, the expected thermal properties of the intracluster medium (ICM) in the context of the cooling flow…

Astrophysics · Physics 2009-11-13 Charlie Conroy , Jeremiah P. Ostriker

The Feedback In Realistic Environments (FIRE) project explores feedback in cosmological galaxy formation simulations. Previous FIRE simulations used an identical source code (FIRE-1) for consistency. Motivated by the development of more…

Momentum deposition by radiation pressure from young, massive stars may help to destroy molecular clouds and unbind stellar clusters by driving large-scale outflows. We extend our previous numerical radiation hydrodynamic study of…

Astrophysics of Galaxies · Physics 2017-12-06 Sudhir Raskutti , Eve C. Ostriker , M. Aaron Skinner

Supernova (SN) feedback plays a vital role in the evolution of galaxies. While modern cosmological simulations capture the leading structures within galaxies, they struggle to provide sufficient resolution to study small-scale stellar…

Astrophysics of Galaxies · Physics 2022-08-10 Platon I. Karpov , Davide Martizzi , Phillip Macias , Enrico Ramirez-Ruiz , Anne N. Kolborg , Jill P. Naiman

The circumgalactic medium (CGM) contains information on the cumulative effect of galactic outflows over time, generally thought to be caused by feedback from star formation and active galactic nuclei. Observations of such outflows via…

There is growing observational evidence for dwarf galaxies hosting active galactic nuclei (AGN), including hints of AGN-driven outflows in dwarfs. However, in the common theoretical model of galaxy formation, efficient supernova (SN)…

Astrophysics of Galaxies · Physics 2022-09-02 Sophie Koudmani , Debora Sijacki , Matthew C. Smith

The interplay between radiative cooling of the circumgalactic medium (CGM) and feedback heating governs the evolution of the universe's most massive galaxies. This paper presents simulations of feedback processes in massive galaxies showing…

We perform two dimensional hydrodynamic numerical simulations to study the positive active galactic nucleus feedback which triggers, rather than suppresses, star formation. Recently, it was shown by Nayakshin et al. and Ishibashi et al.…

Astrophysics of Galaxies · Physics 2015-06-15 Chao Liu , Zhao-ming Gan , Fu-guo Xie

Galactic outflows have density, temperature, and velocity variations at least as large as that of the multiphase, turbulent interstellar medium (ISM) from which they originate. We have conducted a suite of parsec-resolution numerical…

Using idealized 1-D Eulerian hydrodynamic simulations, we contrast the behavior of isolated supernovae with the superbubbles driven by multiple, collocated supernovae. Continuous energy injection via successive supernovae going off within…

Astrophysics of Galaxies · Physics 2015-06-18 Prateek Sharma , Arpita Roy , Biman B. Nath , Yuri Shchekinov

A suite of idealised, global, gravitationally unstable, star-forming galactic disc simulations with 2 pc spatial resolution, performed with the adaptive mesh refinement code {\sc ramses} is used in this paper to predict the emergent effects…

Astrophysics of Galaxies · Physics 2020-01-15 Davide Martizzi

We investigate the properties of the intracluster medium (ICM) that forms within N-body/hydrodynamical simulations of galaxy clusters in a \LambdaCDM cosmology. When radiative cooling and a simple model for galactic feedback are included,…

Astrophysics · Physics 2009-11-10 Scott T. Kay , Peter A. Thomas , Adrian Jenkins , Frazer R. Pearce

We present the Rhapsody-G suite of cosmological hydrodynamic AMR zoom simulations of ten massive galaxy clusters at the $M_{\rm vir}\sim10^{15}\,{\rm M}_\odot$ scale. These simulations include cooling and sub-resolution models for star…

Cosmology and Nongalactic Astrophysics · Physics 2018-12-12 Oliver Hahn , Davide Martizzi , Hao-Yi Wu , August E. Evrard , Romain Teyssier , Risa H. Wechsler
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