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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

We present measurements of the star formation efficiency (SFE) in 3D numerical simulations of driven turbulence in supercritical, ideal-MHD, and non-magnetic regimes, characterized by their mean normalized mass-to-flux ratio $\mu$, all with…

Astrophysics · Physics 2009-11-13 Enrique Vazquez-Semadeni , Jongsoo Kim , Javier Ballesteros-Paredes

Mass-loss and radiation feedback from evolving massive stars produce galactic-scale superwinds, sometimes surrounded by pressure-driven bubbles. Using the time-dependent stellar population typically seen in star-forming regions, we conduct…

Astrophysics of Galaxies · Physics 2024-06-27 A. Danehkar , M. S. Oey , W. J. Gray

We investigate the influence of large-scale stellar feedback on the formation of molecular clouds in the Large Magellanic Cloud (LMC). Examining the relationship between HI and 12CO(J=1-0) in supergiant shells (SGSs), we find that the…

Astrophysics of Galaxies · Physics 2013-01-10 J. R. Dawson , N. M. McClure-Griffiths , T. Wong , John M. Dickey , A. Hughes , Y. Fukui , A. Kawamura

Star formation from the interstellar medium of galactic disks is a basic process controlling the evolution of galaxies. Understanding the star formation rate in a local patch of a disk with a given gas mass is thus an important challenge…

Astrophysics of Galaxies · Physics 2017-06-14 Michael J. Butler , Jonathan C. Tan , Romain Teyssier , Joakim Rosdahl , Sven Van Loo , Sarah Nickerson

Stellar clusters are critical constituents within galaxies: they are the result of highest-density star formation, and through their spatially and temporally correlated feedback they regulate their host galaxy evolution. We present a novel…

Astrophysics of Galaxies · Physics 2024-08-12 Marta Reina-Campos , Oleg Y. Gnedin , Alison Sills , Hui Li

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

Turbulence is thought to be a primary driving force behind the early stages of star formation. In this framework large, self gravitating, turbulent clouds fragment into smaller clouds which in turn fragment into even smaller ones. At the…

Solar and Stellar Astrophysics · Physics 2016-03-17 David Guszejnov , Philip F. Hopkins

Galaxy evolution and star formation are two multi-scale problems tightly linked to each other. To understand the interstellar cycle, which triggers galaxy evolution, it is necessary to describe simultaneously the large-scale evolution…

Astrophysics of Galaxies · Physics 2017-08-16 Olivier Iffrig , Patrick Hennebelle

Star clusters host the massive stars responsible for feedback in star-forming galaxies. Stellar feedback shapes the interstellar medium (ISM), affecting the formation of future star clusters. To self-consistently capture the interplay…

Using radiation-hydrodynamic cosmological simulations, we present a detailed ($0.1$ pc resolution), physically motivated portrait of a typical-mass dwarf galaxy before the epoch of reionization, resolving the formation and evolution of star…

Astrophysics of Galaxies · Physics 2023-05-03 Fred Angelo Batan Garcia , Massimo Ricotti , Kazuyuki Sugimura , Jongwon Park

We study the evolution of star clusters in the Galactic tidal field starting from their birth in molecular clumps. Our model clusters form according to the local-density-driven cluster formation model in which the stellar density profile is…

Astrophysics of Galaxies · Physics 2020-03-18 Bekdaulet Shukirgaliyev , Genevieve Parmentier , Peter Berczik , Andreas Just

We investigate phenomenological models of star formation and supernova feedback in N-body/SPH simulations of galaxy formation. First, we compare different prescriptions in the literature for turning cold gas into stars neglecting feedback…

Astrophysics · Physics 2009-11-06 Scott T. Kay , Frazer R. Pearce , Carlos S. Frenk , Adrian Jenkins

We present a semi-analytical model of high redshift galaxy formation. In our model the star formation inside a galaxy is regulated by the feedback from supernova (SNe) driven outflows. We derive a closed analytical form for star formation…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-18 Saumyadip Samui

Regulating the available gas mass inside galaxies proceeds through a delicate balance between inflows and outflows, but also through the internal depletion of gas due to star formation. At the same time, stellar feedback is the internal…

Astrophysics of Galaxies · Physics 2021-02-17 Michael Kretschmer , Romain Teyssier

Feedback from massive stars is believed to play a critical role in shaping the galaxy mass function, the structure of the interstellar medium (ISM), and the low efficiency of star formation, but the exact form of the feedback is uncertain.…

Cosmology and Nongalactic Astrophysics · Physics 2012-06-22 Philip F. Hopkins , Eliot Quataert , Norman Murray

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

We conduct a theoretical study of the formation of massive stars over a wide range of metallicities from 1e-5 to 1Zsun and evaluate the star formation efficiencies (SFEs) from prestellar cloud cores taking into account multiple feedback…

Solar and Stellar Astrophysics · Physics 2018-07-18 Kei E. I. Tanaka , Jonathan C. Tan , Yichen Zhang , Takashi Hosokawa

We present a novel set of stellar feedback models, implemented in the moving-mesh code Arepo, designed for galaxy formation simulations with near-parsec (or better) resolution. These include explicit sampling of stars from the IMF, allowing…

A popular theory of star formation is gravito-turbulent fragmentation, in which self-gravitating structures are created by turbulence-driven density fluctuations. Simple theories of isothermal fragmentation successfully reproduce the core…

Solar and Stellar Astrophysics · Physics 2018-04-25 David Guszejnov , Mark R. Krumholz , Philip F. Hopkins
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