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Context: Star clusters form within giant molecular clouds that are strongly altered by the feedback action of the massive stars, but the cluster still remains embedded in a dense, highly turbulent medium and interactions with ambient…

Astrophysics of Galaxies · Physics 2022-11-16 Paolo Suin , Steven N. Shore , Václav Pavlík

Numerical simulations of star cluster formation have advanced greatly during the past decade, covering increasingly massive gas clouds while accounting for more and more complex physics. In this review, I discuss the present state of the…

Astrophysics of Galaxies · Physics 2013-04-18 J. M. Diederik Kruijssen

The formation of massive stellar clusters in turbulent molecular clouds is investigated. We include artificial star formation and energy feedback of newly born stars. The obtained systems are not likely to survive. Case studies to determine…

Astrophysics · Physics 2007-05-23 Michael P. Geyer , Andreas Burkert

In this thesis, we aim to further elucidate the phenomenon of galaxy evolution in the environment of galaxy clusters using the methodology of numerical simulations. For that, we have developed hydrodynamic models in which idealized gas-rich…

Astrophysics of Galaxies · Physics 2019-02-15 Rafael Ruggiero

More and more observations indicate that young star clusters could retain imprints of their formation process. In particular, the degree of substructuring and rotation are possibly the direct result of the collapse of the parent molecular…

Astrophysics of Galaxies · Physics 2020-06-17 Alessandro Ballone , Michela Mapelli , Ugo N. Di Carlo , Stefano Torniamenti , Mario Spera , Sara Rastello

To study the formation of star clusters and their properties in a dwarf-dwarf merging galaxy, we have performed a numerical simulation of a dwarf-dwarf galaxy merger by using the Tree+GRAPE $N$-body/SPH code ASURA. In our simulation, 13…

Astrophysics of Galaxies · Physics 2025-01-23 Hidenori Matsui , Kenji Bekki , Madeleine McKenzie , Takayuki R. Saitoh

In this contribution we review our recent numerical work discussing the essential role of the local cluster environment in assembling massive stars. First we show that massive stars are formed from low mass pre-stellar cores and become…

Astrophysics of Galaxies · Physics 2010-08-31 Rowan J Smith , Paul C. Clark , Simon C. O. Glover , Ian A. Bonnell , Ralf S. Klessen

The topology of large scale structure is studied as a function of galaxy type using the genus statistic. In hydrodynamical cosmological CDM simulations, galaxies form on caustic surfaces (Zeldovich pancakes) then slowly drain onto filaments…

Astrophysics · Physics 2012-08-27 J. Richard Gott , III , Renyue Cen , Jeremiah P. Ostriker

High-mass stars are commonly found in stellar clusters promoting the idea that their formation occurs due to the physical processes linked with a young stellar cluster. It has recently been reported that isolated high-mass stars are present…

Astrophysics of Galaxies · Physics 2017-11-29 William E. Lucas , Matus Rybak , Ian A. Bonnell , Mark Gieles

We investigate the properties and evolution of star particles in two simulations of isolated spiral galaxies, and two galaxies from cosmological simulations. Unlike previous numerical work, where typically each star particle represents one…

The isothermal dynamical evolution of a clumpy and turbulent molecular cloud region and its fragmentation into a protostellar cluster is investigated numerically. The effect of different initial density and velocity distributions, generated…

Astrophysics · Physics 2008-11-26 Ralf S. Klessen , Andreas Burkert

Stellar clusters form by gravitational collapse of turbulent molecular clouds, with up to several thousand stars per cluster. They are thought to be the birthplace of most stars and therefore play an important role in our understanding of…

We present a suite of three-dimensional, high-resolution hydrodynamic simulations that follow the evolution of a massive (10^7 M_sun) pressure confined, star-forming neutral gas cloud moving through a hot intra-cluster medium (ICM). The…

Astrophysics of Galaxies · Physics 2020-11-18 Francesco Calura , Michele Bellazzini , Annibale D'Ercole

We investigate the formation of both clustered and distributed populations of young stars in a single molecular cloud. We present a numerical simulation of a 10,000 solar mass elongated, turbulent, molecular cloud and the formation of over…

Astrophysics of Galaxies · Physics 2015-05-19 Ian A. Bonnell , Rowan J. Smith , Paul C. Clark , Matthew R. Bate

Recent observations have revealed a variety of young star clusters, including embedded systems, young massive clusters, and associations. We study the formation and dynamical evolution of these clusters using a combination of simulations…

Astrophysics of Galaxies · Physics 2016-01-27 Michiko Fujii , Simon Portegies Zwart

Star clusters form via clustering star formation inside molecular clouds. In order to understand the dynamical evolution of star clusters in their early phase, in which star clusters are still embedded in their surrounding gas, we need an…

Astrophysics of Galaxies · Physics 2021-05-26 M. S. Fujii , T. R. Saitoh , L. Wang , Y. Hirai

Most stars are born in rich young stellar clusters (YSCs) embedded in giant molecular clouds. The most massive stars live out their short lives there, profoundly influencing their natal environments by ionizing HII regions, inflating…

We present a new scenario for the formation of cool cores in rich galaxy clusters based on results from recent high spatial dynamic range, adaptive mesh Eulerian hydrodynamic simulations of large-scale structure formation. We find that…

Astrophysics · Physics 2008-11-26 Patrick M. Motl , Jack O. Burns , Chris Loken , Michael L. Norman , Greg Bryan

We perform simulations of star cluster formation to investigate the morphological evolution of embedded star clusters in the earliest stages of their evolution. We conduct our simulations with Torch, which uses the AMUSE framework to couple…

Most stars are formed as star clusters in galaxies, which then disperse into galactic disks. Upcoming exascale supercomputational facilities will enable performing simulations of galaxies and their formation by resolving individual stars…

Astrophysics of Galaxies · Physics 2021-05-26 Yutaka Hirai , Michiko S. Fujii , Takayuki R. Saitoh
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