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We use magnetohydrodynamical simulations of converging warm neutral medium flows to analyse the formation and global evolution of magnetised and turbulent molecular clouds subject to supernova feedback from massive stars. We show that…

Astrophysics of Galaxies · Physics 2016-04-27 Bastian Körtgen , Daniel Seifried , Robi Banerjee , Enrique Vázquez-Semadeni , Manuel Zamora-Avilés

Massive OB stars play an important role in the evolution of molecular clouds and star forming regions. The OB stars both photo--ionize molecular gas as well as sweep up and compress interstellar gas through winds, ionization fronts, and…

Astrophysics · Physics 2007-05-23 S. T. Megeath , B. Biller , T. M. Dame , E. Leass , R. S. Whitaker , T. L. Wilson

We investigate the early evolution of two distinct populations of low-mass stars in globular clusters under the influence of primordial gas expulsion driven by supernovae to study if this process can increase the fraction of second…

Astrophysics of Galaxies · Physics 2015-05-18 T. Decressin , H. Baumgardt , C. Charbonnel , P. Kroupa

To explain the observed anomalies in stellar populations within globular clusters, many globular cluster formation theories require two independent episodes of star formation. A fundamental prediction of these models is that the clusters…

Astrophysics of Galaxies · Physics 2015-06-23 Steven N. Longmore

We explore the impact of star formation and thermal stellar feedback on the giant molecular cloud (GMC) population forming in a M83-type barred spiral galaxy. We compare three high-resolution simulations (1.5 pc cell size) with different…

Astrophysics of Galaxies · Physics 2016-07-27 Yusuke Fujimoto , Greg L. Bryan , Elizabeth J. Tasker , Asao Habe , Christine M. Simpson

We use high resolution N-body/gasdynamical simulations to investigate the effects of a photoionizing UV background on the assembly of disk galaxies in hierarchically clustering universes. We focus on the mass and rotational properties of…

Astrophysics · Physics 2009-10-28 Julio Navarro , Matthias Steinmetz

Radiative feedback is an important consequence of cluster formation in Giant Molecular Clouds (GMCs) in which newly formed clusters heat and ionize their surrounding gas. The process of cluster formation, and the role of radiative feedback,…

Astrophysics of Galaxies · Physics 2016-07-27 Corey Howard , Ralph Pudritz , William Harris

In this short communication we consider the possibility that stars less evolved than the polluters are the source of the dilution needed to explain the observed composition of second-generation globular cluster (GC) stars and the Na-O and…

Astrophysics of Galaxies · Physics 2015-05-19 Raffaele G. Gratton , Eugenio Carretta

We present three-dimensional radiation-hydrodynamical simulations of the impact of stellar winds, photoelectric heating, photodissociating and photoionising radiation, and supernovae on the chemical composition and star formation in a…

We explore the formation of massive high-redshift Population III (Pop III) galaxies through photoionization feedback. We consider dark matter halos formed from progenitors that have undergone no star formation as a result of early…

Astrophysics of Galaxies · Physics 2016-05-04 Eli Visbal , Zoltan Haiman , Greg L. Bryan

Radiative feedback is among the most important consequences of clustered star formation inside molecular clouds. At the onset of star formation, radiation from massive stars heats the surrounding gas, which suppresses the formation of many…

Astrophysics of Galaxies · Physics 2015-06-03 Mikhail Klassen , Ralph E. Pudritz , Thomas Peters

We have carried out a large grid of N-body simulations in order to investigate if mass-loss as a result of primordial gas expulsion can be responsible for the large fraction of second generation stars in globular clusters (GCs) with…

Astrophysics of Galaxies · Physics 2015-07-14 Pouria Khalaj , Holger Baumgardt

The discovery of multiple stellar populations in globular clusters raises fundamental questions concerning the formation and dynamical history of these systems. In a previous study aimed at exploring the formation of second-generation (SG)…

Astrophysics of Galaxies · Physics 2015-05-28 Enrico Vesperini , Stephen L. W. McMillan , Francesca D'Antona , Annibale D'Ercole

We present simulations of the multi-phase interstellar medium (ISM) at solar neighbourhood conditions including thermal and non-thermal ISM processes, star cluster formation, and feedback from massive stars: stellar winds, hydrogen ionising…

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

We present numerical methods for including stellar feedback in galaxy-scale simulations. We include heating by SNe (I & II), gas recycling and shock-heating from O-star & AGB winds, HII photoionization, and radiation pressure from stellar…

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

The first stars in the universe ionized the ambient primordial gas through various feedback processes. "Second-generation" primordial stars potentially form from this disturbed gas after its recombination. In this Letter, we study the late…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-11 Takashi Hosokawa , Naoki Yoshida , Kazuyuki Omukai , Harold W. Yorke

A major paradigm shift has recently revolutionized our picture of globular clusters (GC) that were long thought to be simple systems of coeval stars born out of homogeneous material. Indeed, detailed abundance studies of GC long-lived…

Astrophysics of Galaxies · Physics 2013-01-23 C. Charbonnel , M. Krause , T. Decressin , N. Prantzos , G. Meynet

We present three Orion simulations of star cluster formation in a 1000 Msun, turbulent molecular cloud clump, including the effects of radiative transfer, protostellar outflows, and magnetic fields. Our simulations all use self-consistent…

Astrophysics of Galaxies · Physics 2015-06-18 Andrew Myers , Richard Klein , Mark Krumholz , Chris McKee

We examine the star formation history and stellar feedback effects of dwarf galaxies under the influence of extragalactic ultraviolet radiation. We consider the dynamical evolution of gas in dwarf galaxies using a one-dimensional,…

Astrophysics · Physics 2009-11-10 Shawfeng Dong , D. N. C. Lin , S. D. Murray
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