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We present cosmological hydrodynamic simulations performed to study evolution of galaxy population. The simulations follow timed release of mass, energy, and metals by stellar evolution and employ phenomenological treatments of supernova…

Astrophysics of Galaxies · Physics 2014-09-15 Takashi Okamoto , Ikkoh Shimizu , Naoki Yoshida

We argue that the interplay between cosmic rays, the initial mass function, and star formation plays a crucial role in regulating the star-forming "main sequence". To explore these phenomena we develop a toy model for galaxy evolution in…

Astrophysics of Galaxies · Physics 2020-02-19 Charles L. Steinhardt , Adam S. Jermyn , Jackie Lodman

We investigate the star formation-feedback cycle in cosmological galaxy formation simulations, focusing on progenitors of Milky Way (MW)-sized galaxies. We find that in order to reproduce key properties of the MW progenitors, such as…

Astrophysics of Galaxies · Physics 2015-06-19 Oscar Agertz , Andrey V. Kravtsov

Theoretical models of galaxy formation based on the cold dark matter cosmogony typically require strong feedback from supernova (SN) explosions in order to reproduce the Milky Way satellite galaxy luminosity function and the faint end of…

Astrophysics of Galaxies · Physics 2016-08-24 Jun Hou , Carlos. S. Frenk , Cedric G. Lacey , Sownak Bose

We investigate the star formation process in primordial environment in the presence of radiative feedback by other population III stars formed earlier. In this paper, we focus our attention on the effects by photodissociative radiation…

Astrophysics · Physics 2009-11-13 Hajime Susa

Recent results from the James Webb Space Telescope show that nearby spiral galaxies are dominated by the presence of H I and H II bubbles that strongly shape their surrounding medium. These bubbles result from the feedback of high-mass…

We present the results of cosmological hydrodynamic simulations with zoom-in initial conditions, and investigate the formation of the first galaxies and their evolution towards observable galaxies at $z \sim 6$. We focus on three different…

Astrophysics of Galaxies · Physics 2017-09-06 Hidenobu Yajima , Kentaro Nagamine , Qirong Zhu , Sadegh Khochfar , Claudio Dalla Vecchia

Radiative feedback (RFB) from stars plays a key role in galaxies, but remains poorly-understood. We explore this using high-resolution, multi-frequency radiation-hydrodynamics (RHD) simulations from the Feedback In Realistic Environments…

We study the effect of starlight from the first stars on the ability of other minihaloes in their neighborhood to form additional stars. The question of what the dynamical consequences were for these target minihaloes, of their exposure to…

Astrophysics · Physics 2008-11-26 Kyungjin Ahn , Paul R. Shapiro

We present the first ever hydrodynamic calculations of star cluster formation that incorporate the effect of feedback from ionising radiation. In our simulations, the ionising source forms in the cluster core at the intersection of several…

Astrophysics · Physics 2014-10-13 J. E. Dale , I. A. Bonnell , C. J. Clarke , M. R. Bate

Using 3D radiation-hydrodynamical simulations, we study the effects of ionising radiation on the formation of second-generation (SG) stars in Globular Clusters (GCs) with multiple stellar populations. In particular, we focus on massive…

Astrophysics of Galaxies · Physics 2022-10-25 Asiyeh Yaghoobi , Joakim Rosdahl , Francesco Calura , Pouria Khalaj , Hosein Haghi

We present hydrodynamic and magnetohydrodynamic (MHD) simulations of sub galactic regions including photoionising and supernova feedack. We aim to improve the initial conditions of our region extraction models by including an initial…

Astrophysics of Galaxies · Physics 2023-04-14 Nicholas P. Herrington , Clare L. Dobbs , Thomas J. R. Bending

Stellar feedback in the form of radiation pressure and magnetically-driven collimated outflows may limit the maximum mass that a star can achieve and affect the star-formation efficiency of massive pre-stellar cores. Here we present a…

Solar and Stellar Astrophysics · Physics 2020-07-29 Anna L. Rosen , Mark R. Krumholz

The temporal evolution of the ionizing UV background radiation field at high redshift provides a probe of the evolution of the early star formation rate. By comparing the observed levels of absorption in the highest redshift quasar spectra…

Astrophysics · Physics 2009-11-07 Renyue Cen , Patrick McDonald

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

We present a suite of galaxy formation simulations that directly model star cluster formation and disruption. Starting from a model previously developed by our group, here we introduce several improvements to the prescriptions for cluster…

Astrophysics of Galaxies · Physics 2022-05-04 Gillen Brown , Oleg Y. Gnedin

We use a high-resolution grid-based hydrodynamics method to simulate the multi-phase interstellar medium in a Milky Way-size quiescent disk galaxy. The models are global and three-dimensional, and include a treatment of star formation and…

Astrophysics · Physics 2009-11-13 Elizabeth J. Tasker , Greg L. Bryan

We investigate the effects of gradual heating on the evolution of turbulent molecular clouds of mass $2\times 10^6$ M$_\odot$ and virial parameters ranging between $0.7-1.2$. This gradual heating represents the energy output from processes…

Astrophysics of Galaxies · Physics 2018-07-26 L. Garratt-Smithson , G. A. Wynn , C. Power , C. J. Nixon

We present an analysis of star formation and feedback recipes appropriate for galactic smoothed particle hydrodynamics simulations. Using an isolated Milky Way-like galaxy, we constrain these recipes based on well-established observational…

Astrophysics · Physics 2009-11-11 Greg Stinson , Anil Seth , Neal Katz , James Wadsley , Fabio Governato , Tom Quinn

Supernovae are the most energetic stellar events and influence the interstellar medium by their gasdynamics and energetics. By this, both also affect the star formation positively and negatively. In this paper, we review the complexity of…

Astrophysics of Galaxies · Physics 2015-06-18 Gerhard Hensler