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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

The accumulation, compression and cooling of the ambient interstellar medium (ISM) in large-scale flows powered by OB cluster feedback can drive the production of dense molecular clouds. We review the current state of the field, with a…

Astrophysics of Galaxies · Physics 2013-04-10 J. R. Dawson

Protostellar feedback, both radiation and bipolar outflows, dramatically affects the fragmentation and mass accretion from star-forming cores. We use ORION, an adaptive mesh refinement gravito-radiation-hydrodynamics code, to simulate the…

Solar and Stellar Astrophysics · Physics 2015-06-03 Charles E. Hansen , Richard I. Klein , Christopher F. McKee , Robert T. Fisher

We present numerical simulations of a 15 solar mass star in a suite of idealised environments in order to quantify the amount of energy transmitted to the interstellar medium (ISM). We include models of stellar winds, UV photoionisation and…

Astrophysics of Galaxies · Physics 2015-06-23 Sam Geen , Joakim Rosdahl , Jeremy Blaizot , Julien Devriendt , Adrianne Slyz

We present self-consistent radiation hydrodynamic simulations of hydrogen reionization performed with Arepo-RT complemented by a state-of-the-art galaxy formation model. We examine how photoheating feedback, due to reionization, shapes the…

Astrophysics of Galaxies · Physics 2019-06-25 Xiaohan Wu , Rahul Kannan , Federico Marinacci , Mark Vogelsberger , Lars Hernquist

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

Star clusters interact with the interstellar medium (ISM) in various ways, most importantly in the destruction of molecular star-forming clouds, resulting in inefficient star formation on galactic scales. On cloud scales, ionizing radiation…

Astrophysics of Galaxies · Physics 2017-07-25 Daniel Rahner , Eric W. Pellegrini , Simon C. O. Glover , Ralf S. Klessen

Massive stars in young massive clusters insert tremendous amounts of mass and energy into their surroundings in the form of stellar winds and supernova ejecta. Mutual shock-shock collisions lead to formation of hot gas, filling the volume…

Astrophysics of Galaxies · Physics 2017-04-05 Richard Wünsch , Jan Palouš , Guillermo Tenorio-Tagle , Casiana Muñoz-Tuñón , Soňa Ehlerová

Massive stars born in star clusters terminate star cluster formation by ionizing the surrounding gas. This process is considered to be prevalent in young star clusters containing massive stars. The Orion Nebula is an excellent example…

Astrophysics of Galaxies · Physics 2022-06-10 Michiko S. Fujii , Kohei Hattori , Long Wang , Yutaka Hirai , Jun Kumamoto , Yoshito Shimajiri , Takayuki R. Saitoh

The majority of the inhomogeneities in the chemical composition of Globular Cluster (GC) stars appear due to primordial enrichment by hot-CNO cycled material processed in stars belonging to a first stellar generation. Either massive AGB…

Astrophysics · Physics 2009-11-13 F. D'Antona , V. Caloi

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

We investigate the impact of ram pressure stripping due to the intracluster medium (ICM) on star-forming disk galaxies with a multi-phase interstellar medium (ISM) maintained by strong stellar feedback. We carry out radiation-hydrodynamics…

Astrophysics of Galaxies · Physics 2020-12-16 Jaehyun Lee , Taysun Kimm , Harley Katz , Joakim Rosdahl , Julien Devriendt , Adrianne Slyz

Stars form predominantly in groups which display a broad spectrum of masses, sizes, and other properties. Despite this diversity there exist an underlying structure that can constrain cluster formation theories. We show how combining…

Astrophysics of Galaxies · Physics 2020-03-18 Susanne Pfalzner

The iron composition of globular clusters (GCs) is homogeneous in all but a few massive clusters, despite the presence of multiple stellar populations. Hence, most if not all the supernovae (SN) ejecta was not used to form stars. Here by…

Astrophysics of Galaxies · Physics 2021-06-30 Santiago Jiménez , Guillermo Tenorio-Tagle , Sergiy Silich

We simulate the evolution of a 10^9 Msun dark matter halo in a cosmological setting with an adaptive-mesh refinement code as an analogue to local low luminosity dwarf irregular and dwarf spheroidal galaxies. The primary goal of our study is…

Molecular cloud structure is regulated by stellar feedback in various forms. Two of the most important feedback processes are UV photoionisation and supernovae from massive stars. However, the precise response of the cloud to these…

Astrophysics of Galaxies · Physics 2016-09-21 Sam Geen , Patrick Hennebelle , Pascal Tremblin , Joakim Rosdahl

We model the combined effects of photoionization and momentum--driven winds from O--stars on molecular clouds spanning a parameter space of initial conditions. The dynamical effects of the winds are very modest. However, in the lower--mass…

Astrophysics of Galaxies · Physics 2015-06-19 J. E. Dale , J. Ngoumou , B. Ercolano , I. A. Bonnell

Stellar feedback -- stars regulating further star formation through the injection of energy and momentum into the interstellar medium -- operates through a complex set of processes that originate in star clusters but shape entire galaxies.…

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 possibility that multiple populations in globular clusters arise as a natural by-product of massive star-cluster formation. We use 3D radiative hydrodynamics simulations for the formation of young massive clusters to…

Astrophysics of Galaxies · Physics 2019-04-10 Corey S. Howard , Ralph E. Pudritz , Alison Sills , William E. Harris
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