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Cosmological simulations of galaxies have typically produced too many stars at early times. We study the global and morphological effects of radiation pressure (RP) in eight pairs of high-resolution cosmological galaxy formation…

The formation and evolution of galactic disks are complex phenomena, where gas and star dynamics are coupled through star formation and the related feedback. The physical processes are so numerous and intricate that numerical models focus,…

Astrophysics · Physics 2009-11-07 B. Semelin , F. Combes

The scaling of galaxy properties with halo mass suggests that feedback loops regulate star formation, but there is no consensus yet about how those feedback loops work. To help clarify discussions of galaxy-scale feedback, Paper I presented…

Astrophysics of Galaxies · Physics 2024-06-13 G. M. Voit , C. Carr , D. B. Fielding , V. Pandya , G. L. Bryan , M. Donahue , B. D. Oppenheimer , R. S. Somerville

The physics of star formation and the deposition of mass, momentum, and energy into the interstellar medium by massive stars (`feedback') are the main uncertainties in modern cosmological simulations of galaxy formation and evolution. These…

We study the effects of Supernova (SN) feedback on the formation of disc galaxies. For that purpose we run simulations using the extended version of the code GADGET-2 which includes a treatment of chemical and energy feedback by SN…

Astrophysics · Physics 2007-05-23 C. Scannapieco , P. B. Tissera , S. D. M. White , V. Springel

To advance our understanding of massive star formation, it is essential to perform a comprehensive suite of simulations that explore the relevant parameter space and include enough physics to enable a comparison with observational data. We…

Astrophysics of Galaxies · Physics 2025-11-19 Birka Zimmermann , Stefanie Walch , Seamus D. Clarke , Richard Wünsch , Andre Klepitko

Massive star clusters are observed in a broad range of galaxy luminosity and types, and are assumed to form in dense gas-rich environments. Using a parsec-resolution hydrodynamical simulation of an isolated gas-rich low mass galaxy, we…

Astrophysics of Galaxies · Physics 2018-04-04 Nicolas Guillard , Eric Emsellem , Florent Renaud

We include feedback in global hydrodynamic simulations in order to study the star formation properties, and gas structure and dynamics, in models of galactic disks. We extend previous models by implementing feedback in gravitationally bound…

Astrophysics · Physics 2009-11-13 Rahul Shetty , Eve C. Ostriker

We present SPICE, a new suite of RHD cosmological simulations targeting the epoch of reionisation. The goal of these simulations is to systematically probe a variety of stellar feedback models, including "bursty" and "smooth" forms of…

Astrophysics of Galaxies · Physics 2024-10-23 Aniket Bhagwat , Tiago Costa , Benedetta Ciardi , Rüdiger Pakmor , Enrico Garaldi

We introduce the Stars and MUltiphase Gas in GaLaxiEs -- SMUGGLE model, an explicit and comprehensive stellar feedback model for the moving-mesh code arepo. This novel sub-resolution model resolves the multiphase gas structure of the…

Astrophysics of Galaxies · Physics 2019-09-25 Federico Marinacci , Laura V. Sales , Mark Vogelsberger , Paul Torrey , Volker Springel

[abridged]We use 3D cosmological simulations with radiative transfer to study the formation and evolution of the first galaxies in a LCDM cosmology. We find that the first luminous objects ("small-halos") are characterized by a bursting…

Astrophysics · Physics 2009-11-07 Massimo Ricotti , Nickolay Y. Gnedin , J. Michael Shull

Stellar feedback plays a crucial role in regulating baryon cycles of a galactic ecosystem, and may manifest itself in the formation of superbubbles in the interstellar medium. In this work, we used a set of high-resolution simulations to…

Astrophysics of Galaxies · Physics 2024-03-20 Chengzhe Li , Hui Li , Wei Cui , Federico Marinacci , Laura V. Sales , Mark Vogelsberger , Paul Torrey

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

We use numerical simulations of isolated galaxies to study the effects of stellar feedback on the formation and evolution of giant star-forming gas 'clumps' in high-redshift, gas-rich galaxies. Such galactic disks are unstable to the…

Cosmology and Nongalactic Astrophysics · Physics 2013-07-02 Philip F. Hopkins , Dusan Keres , Norman Murray , Eliot Quataert , Lars Hernquist

We present an analysis of the role of feedback in shaping the neutral hydrogen (HI) content of simulated disc galaxies. For our analysis, we have used two realisations of two separate Milky Way-like (~L*) discs - one employing a…

Astrophysics of Galaxies · Physics 2015-06-18 A. P. Walker , B. K. Gibson , K. Pilkington , C. B. Brook , P. Dutta , S. Stanimirovic , G. S. Stinson , J. Bailin

Feedback to the interstellar medium (ISM) from ionising radiation, stellar winds and supernovae is central to regulating star formation in galaxies. Due to their low mass ($M_{*} < 10^{9}$\,M$_\odot$), dwarf galaxies are particularly…

Astrophysics of Galaxies · Physics 2022-05-17 Michelle L. M. Collins , Justin I. Read

Accurate modeling of supernova (SN) feedback in galaxy formation simulations is complicated by energy conservation violations arising from the vector nature of momentum injection. We present a mechanical feedback scheme addressing two key…

Astrophysics of Galaxies · Physics 2026-04-28 Takashi Okamoto

We present a suite of zoom-in cosmological simulations of Milky Way-like galaxies with a prominent disc component and a strong bar in their centre, based on a subsample of barred galaxies from the TNG50 magneto-hydrodynamic simulation. We…

Astrophysics of Galaxies · Physics 2025-05-28 Yetli Rosas-Guevara , Silvia Bonoli , Ewald Puchwein , Massimo Dotti , Sergio Contreras

We use sub-parsec resolution hydrodynamic resimulations of a Milky Way (MW) like galaxy at high redshift to investigate the formation of the MW satellite galaxies. More specifically, we assess the impact of supernova feedback on the dwarf…

Astrophysics of Galaxies · Physics 2015-05-27 Sam Geen , Adrianne Slyz , Julien Devriendt

We investigate the formation of a galaxy reaching a virial mass of $~ 10^8$ solar mass at $z=10$ by carrying out a zoomed radiation-hydrodynamical cosmological simulation. This simulation traces Population~III (Pop~III) star formation,…

Astrophysics of Galaxies · Physics 2015-08-21 Myoungwon Jeon , Volker Bromm , Andreas H. Pawlik , Milos Milosavljevic