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Dynamical evolution of stellar mass distribution in star clusters is analysed by considering simultaneously the effects of dynamical friction, stochastic heating and the gravitational potential due to mass distribution in the clusters. A…

Astrophysics · Physics 2007-05-23 S. Chatterjee , Brijesh Kumar , Ram Sagar

Triple stellar systems, consisting of three gravitationally bound stars, play a fundamental role in a wide array of astrophysical processes, from stellar evolution to the formation of exotic objects and gravitational wave sources. This…

Solar and Stellar Astrophysics · Physics 2025-08-26 Hagai B. Perets

N-body simulations of star cluster evolution have reached a high degree of realism, by incorporating more and more elements of stellar dynamics, stellar evolution, and hydrodynamics. At the end of this conference, six participants discussed…

Astrophysics · Physics 2007-05-23 Piet Hut , Adrienne Cool , Charles Bailyn , Steve McMillan , Mario Livio , Mike Shara

We consider the use of N-body simulations for studying the evolution of rich star clusters (i.e. globular clusters). The dynamical processes included in this study are restricted to gravitational (point-mass) interactions, the steady tidal…

Astrophysics · Physics 2016-08-30 S. J. Aarseth , D. C. Heggie

In this paper, we study the 3-body products (two single stars and a binary) of binary-binary (2+2) scattering interactions. This is done using a combination of analytic methods and numerical simulations of 2+2 scattering interactions, both…

Astrophysics of Galaxies · Physics 2017-06-28 Taeho Ryu , Nathan W. C. Leigh , Rosalba Perna

Observations and theoretical work suggest that globular clusters may be born with initially very large binary fractions. We present first results from our newly modified Monte-Carlo cluster evolution code, which treats binary interactions…

Astrophysics · Physics 2007-05-23 John M. Fregeau , M. Atakan Gurkan , Frederic A. Rasio

We use N-body simulations to study the dynamical evolution of Population III (Pop III) stellar systems and the resulting binary statistics. We design a physically-motivated framework for the initial conditions of Pop III star clusters,…

Astrophysics of Galaxies · Physics 2020-12-02 Boyuan Liu , Georges Meynet , Volker Bromm

Dense star clusters are spectacular self-gravitating stellar systems in our Galaxy and across the Universe - in many respects. They populate disks and spheroids of galaxies as well as almost every galactic center. In massive elliptical…

Instrumentation and Methods for Astrophysics · Physics 2023-05-22 Rainer Spurzem , Albrecht Kamlah

Binary formation in clusters through triple encounters between three unbound stars, 'three-body' binary formation, is one of the main dynamical formation processes of binary systems in dense environments. In this paper, we use an analytical…

Astrophysics of Galaxies · Physics 2025-11-18 Yonadav Barry Ginat , Hagai B. Perets

We present a series of $N$-body simulations representing the evolution of a galactic nucleus and its stellar content in a nearly one-to-one representation. The aim of this suite of simulations is to shed light on the interplay between…

Astrophysics of Galaxies · Physics 2016-06-16 Manuel Arca-Sedda , Roberto Capuzzo-Dolcetta

The stellar-dynamical evolution of bound star clusters during the first few Myr is dominated by binary-binary and binary-star interactions, the rapid sinking of the most massive stars to the centre of the clusters and mass loss from…

Astrophysics · Physics 2007-05-23 Pavel Kroupa

The galactic population of globular clusters are old, dense star systems, with a typical cluster containing $10^4 - 10^6$ stars. As an old population of stars, globular clusters contain many collapsed and degenerate objects. As a dense…

Astrophysics · Physics 2016-10-19 Matthew Benacquista

Field stars are frequently formed in pairs, and many of these binaries are part of triples or even higher-order systems. Even though, the principles of single stellar evolution and binary evolution, have been accepted for a long time, the…

Solar and Stellar Astrophysics · Physics 2016-12-20 S. Toonen , A. Hamers , S. Portegies Zwart

The scattering of small bodies by planets is an important dynamical process in planetary systems. We present an analytical model to describe this process using the simplifying assumption that each particle's dynamics is dominated by a…

Earth and Planetary Astrophysics · Physics 2015-06-03 A. Bonsor , M. C. Wyatt

We review recent progress in computational methods for studying the dynamical evolution of large star clusters. After describing some highlights of a new comparison of different models, including N-body models, we mention in detail recent…

Astrophysics · Physics 2007-05-23 D. C. Heggie , M. Giersz , R. Spurzem , K. Takahashi

Most stars are born in dense stellar environments where the formation and early evolution of planetary systems may be significantly perturbed by encounters with neighbouring stars. To investigate on the fate of circumstellar gas disks and…

Earth and Planetary Astrophysics · Physics 2023-09-14 Francesco Flammini Dotti , Roberto Capuzzo-Dolcetta , M. B. N. Kouwenhoven

Observations of protostars are often compared with synthetic observations of models in order to infer the underlying physical properties of the protostars. The majority of these models have a single protostar, attended by a disc and an…

Solar and Stellar Astrophysics · Physics 2018-01-24 O. Lomax , A. P. Whitworth

This chapter reviews the dynamical processes in young stellar clusters. The accretion of gas by individual stars affects the dynamics of the cluster, and the masses of the stars. Dynamical mass segregation cannot explain the degree of mass…

Astrophysics · Physics 2007-05-23 Ian Bonnell , Pavel Kroupa

Physical collisions between stars occur frequently in dense star clusters, either via close encounters between two single stars, or during strong dynamical interactions involving binary stars. Here we study stellar collisions that occur…

Astrophysics · Physics 2009-11-10 J. M. Fregeau , P. Cheung , S. F. Portegies Zwart , F. A. Rasio

Context: The dynamical evolution of binary populations in embedded star clusters shapes the statistical properties of binaries observed in the Galactic field. Accurately modelling this process requires resolving both early cluster dynamics…

Astrophysics of Galaxies · Physics 2026-02-03 Wenjie Wu , Pavel Kroupa , Vikrant V. Jadhav