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We report results of collisional N-body simulations aimed to study the N-dependance of the dynamical evolution of star clusters. Our clusters consist of equal-mass stars and are in virial equilibrium. Clusters moving in external tidal…

Astrophysics · Physics 2009-10-31 H. Baumgardt

The evolution of star clusters is driven by stellar mass loss, two-body relaxation, and evaporation in the Galactic tidal field. Fast modeling tools are crucial for exploring diverse initial conditions and predicting cluster populations and…

The evolution of star clusters is largely affected by the tidal field generated by the host galaxy. It is thus in principle expected that under the assumption of an "universal" initial cluster mass function the properties of the evolved…

Astrophysics of Galaxies · Physics 2016-08-31 L. J. Rossi , K. Bekki , J. R. Hurley

The clustered nature of star formation should produce a high degree of structure in the combined phase and chemical space in the Galactic disk. To date, observed structure of this kind has been mostly limited to bound clusters and moving…

Astrophysics of Galaxies · Physics 2019-11-06 Harshil Kamdar , Charlie Conroy , Yuan-Sen Ting , Ana Bonaca , Benjamin Johnson , Phillip Cargile

Star formation in molecular clouds is clumpy, hierarchically subclustered. Fractal structure also emerges in hydro-dynamical simulations of star-forming clouds. Simulating the formation of realistic star clusters with hydro-dynamical…

Wide (soft) binaries are expected to be rapidly disrupted in dense stellar environments, yet they are observed in both the Galactic field and open clusters (OCs). In this paper, we investigate the formation and disruption of wide binaries…

Context. Open clusters (OCs) are important for understanding star formation, dynamics, and evolution. Previous studies have indicated a relationship between cluster structure and member star properties, but the formation mechanism of the…

Astrophysics of Galaxies · Physics 2025-05-16 Kaixiang Lang , Yu Zhang , Hubiao Niu , Jayanand Maurya , Jinzhong Liu , Guimei Liu

Most recent progress in understanding the dynamical evolution of star clusters relies on direct N-body simulations. Owing to the computational demands, and the desire to model more complex and more massive star clusters, hardware…

Instrumentation and Methods for Astrophysics · Physics 2015-06-03 P. Anders , H. Baumgardt , E. Gaburov , S. Portegies Zwart

Core collapse is a prominent evolutionary stage of self-gravitating systems. In an idealised collisionless approximation, the region around the cluster core evolves in a self-similar way prior to the core collapse. Thus, its radial density…

Astrophysics of Galaxies · Physics 2018-12-05 Václav Pavlík , Ladislav Šubr

Direct N-body simulations of star clusters in a realistic Milky Way-like potential are carried out using the code NBODY6. Based on these simulations a new relationship between scale size and galactocentric distance is derived: the scale…

Astrophysics of Galaxies · Physics 2015-06-11 Juan P. Madrid , Jarrod R. Hurley , Anna C. Sippel

We present a numerical code for multi-component simulation of the galactic evolution. Our code includes the following parts: $N$-body is used to evolve dark matter, stellar dynamics and dust grains, gas dynamics is based on TVD-MUSCL scheme…

Computational Physics · Physics 2015-02-11 S. A. Khoperskov , E. O. Vasiliev , A. V. Khoperskov , V. N. Lubimov

Context. Simulating stellar dynamics in a molecular cloud environment is numerically challenging due to the strong coupling between young stars and their surrounding gas, and the large range of length and time scales. Aims. This paper is…

Astrophysics of Galaxies · Physics 2025-10-08 Yann Bernard , Estelle Moraux , Daniel J. Price , Frédérique Motte , Fabien Louvet , Isabelle Joncour

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

We investigate the dynamical formation and evolution of binaries containing neutron stars in dense globular clusters. Our numerical simulations combine a simple Monte Carlo prescription for stellar dynamics, a sophisticated binary…

Astrophysics · Physics 2007-05-23 Natalia Ivanova , John M. Fregeau , Frederic A. Rasio

The purpose of the present work is a detailed investigation of the dynamical evolutionof Collinder 135 and UBC 7 star clusters. We present a set of dynamical numerical simulationsusing realistic star clusterN-body modeling technique with…

Astrophysics of Galaxies · Physics 2023-02-01 Marina Ishchenko , Peter Berczik , Nina Kharchenko

We study the evolution of binary stars in globular clusters using a new Monte Carlo approach combining a population synthesis code (StarTrack), and a simple treatment of dynamical interactions in the dense cluster core using a new tool for…

Astrophysics · Physics 2009-11-10 N. Ivanova , K. Belczynski , J. M. Fregeau , F. A. Rasio

We present results of fully self-consistent N-body simulations of the motion of four globular clusters moving in the inner region of their parent galaxy. With regard to previous simplified simulations, we confirm merging and formation of an…

Astrophysics · Physics 2008-07-13 R. Capuzzo-Dolcetta , P. Miocchi

Stars form with a complex and highly structured distribution. For a smooth star cluster to form from these initial conditions, the star cluster must erase this substructure. We study how substructure is removed using N-body simulations that…

Astrophysics of Galaxies · Physics 2015-05-28 R. Smith , R. Slater , M. Fellhauer , S. Goodwin , P. Assmann

We present the results of detailed N-body simulations regarding the interaction of four massive globular clusters in the central region of a triaxial galaxy. The systems undergo a full merging event, producing a sort of 'Super Star Cluster'…

Astrophysics · Physics 2007-05-23 P. Miocchi , R. Capuzzo Dolcetta , P. Di Matteo

In this brief proceedings article I summarize the review talk I gave at the IAU 246 meeting in Capri, Italy, glossing over the well-known results from the literature, but paying particular attention to new, previously unpublished material.…

Astrophysics · Physics 2009-11-13 John M. Fregeau
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