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相关论文: On the dissolution of evolving star clusters

200 篇论文

We study the dynamical evolution of globular clusters containing primordial binaries, including full single and binary stellar evolution using our Monte Carlo cluster evolution code updated with an adaptation of the single and binary…

星系天体物理 · 物理学 2014-11-20 Sourav Chatterjee , John M. Fregeau , Stefan Umbreit , Frederic A. Rasio

We present the first post core collapse models of initially rotating star clusters, using the numerical solution of an orbit-averaged 2D Fokker-Planck equation. Based on the code developed by Einsel & Spurzem (1999), we have improved the…

天体物理学 · 物理学 2009-11-07 Eunhyeuk Kim , Christian Einsel , Hyung Mok Lee , Rainer Spurzem , Myung Gyoon Lee

Context: Open clusters' dynamical evolution is driven by stellar evolution, internal dynamics and external forces, which according to dynamical simulations, will evaporate them in a timescale of about 1 Ga. However, about 10\% of the known…

Special high-accuracy direct force summation N-body algorithms and their relevance for the simulation of the dynamical evolution of star clusters and other gravitating N-body systems in astrophysics are presented, explained and compared…

天体物理学 · 物理学 2007-05-23 R. Spurzem

(Abridged) The formation and evolution of star cluster populations are related to the galactic environment. Cluster formation is governed by processes acting on galactic scales, and star cluster disruption is driven by the tidal field. In…

宇宙学与河外天体物理 · 物理学 2015-05-27 J. M. Diederik Kruijssen , F. Inti Pelupessy , Henny J. G. L. M. Lamers , Simon F. Portegies Zwart , Vincent Icke

N-body simulations are widely used to simulate the dynamical evolution of a variety of systems, among them star clusters. Much of our understanding of their evolution rests on the results of such direct N-body simulations. They provide…

天体物理仪器与方法 · 物理学 2012-01-30 P. Anders , H. Baumgardt , N. Bissantz , S. Portegies Zwart

We investigate the dynamical evolution of the Galactic Globular Cluster System in considerably greater detail than has been done hitherto, finding that destruction rates are significantly larger than given by previous estimates. More than…

天体物理学 · 物理学 2009-10-28 Oleg Y. Gnedin , Jeremiah P. Ostriker

The current generation of galaxy simulations can resolve individual giant molecular clouds, the progenitors of dense star clusters. But the evolutionary fate of these young massive clusters, and whether they can become the old globular…

Direct N-body simulations of globular clusters in a realistic Milky Way-like potential are carried out using the code NBODY6 to determine the impact of the host galaxy disk mass and geometry on the survival of star clusters. A relationship…

星系天体物理 · 物理学 2015-06-18 Juan P. Madrid , Jarrod R. Hurley , Marie Martig

We present the results of Monte Carlo simulations for the dynamical evolution of star clusters containing two stellar populations with individual masses m1 and m2 > m1, and total masses M1 and M2 < M1. We use both King and Plummer model…

天体物理学 · 物理学 2009-10-31 W. A. Watters , K. J. Joshi , F. A. Rasio

We have carried out a set of Monte Carlo simulations to study a number of fundamental aspects of the dynamical evolution of multiple stellar populations in globular clusters with different initial masses, fractions of second generation (2G)…

星系天体物理 · 物理学 2021-03-03 E. Vesperini , J. Hong , M. Giersz , A. Hypki

Evaporative evolution of stellar clusters is shown to be relaxation limited when the number of stars satisfies $N>>N_c$, where $N_c\simeq 1600$. For a Maxwell velocity distribution that extends beyond the escape velocity, this process is…

星系天体物理 · 物理学 2015-06-03 Maurice H. P. M. van Putten

We use N-body simulations to explore the influence of orbital eccentricity on the dynamical evolution of star clusters. Specifically we compare the mass loss rate, velocity dispersion, relaxation time, and the mass function of star clusters…

星系天体物理 · 物理学 2015-06-19 Jeremy J. Webb , Nathan Leigh , Alison Sills , William E. Harris , Jarrod R. Hurley

The semi-analytic theory of tidal shocks proves to be a powerful tool to study tidal interactions of star clusters and satellite galaxies with their massive hosts. New models of the globular cluster evolution employ a combination of…

天体物理学 · 物理学 2007-05-23 Oleg Y. Gnedin , Jeremiah P. Ostriker

This paper studies the dynamical evolution of young stellar clusters with $N$ = 100 - 1000 members. We use N-body simulations to explore how evolution depends on system size $N$ and the initial conditions. Motivated by recent observations…

天体物理学 · 物理学 2009-11-13 Fred C. Adams , Eva M. Proszkow , Marco Fatuzzo , Philip C. Myers

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…

天体物理学 · 物理学 2016-10-19 Matthew Benacquista

We studied and compared the radial profiles of globular clusters and of the stellar bulge component in three galaxies of the Fornax cluster observed with the WFPC2 of the HST. A careful comparative analysis of these distributions confirms…

天体物理学 · 物理学 2009-11-06 R. Capuzzo-Dolcetta , I. Donnarumma

We present new Fokker-Planck models of the evolution of globular clusters, including gravitational tidal shocks. We extend our calculations beyond the core collapse by adopting three-body binary heating. Effects of the shocks are included…

天体物理学 · 物理学 2009-10-30 Oleg Y. Gnedin , Hyung Mok Lee , Jeremiah P. Ostriker

Star clusters - open and globulars - experience dynamical evolution on time scales shorter than their age. Consequently, open and globular clusters provide us with unique dynamical laboratories for learning about two-body relaxation, mass…

天体物理学 · 物理学 2007-05-23 Georges Meylan

We have developed a two-dimensional orbit averaged Fokker-Planck model of stellar clusters which expands on spherically symmetric one-dimensional models to include rotation and ellipticity. Physical effects such as collisions, finite…

天体物理学 · 物理学 2007-05-23 J. Girash