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相关论文: Monte Carlo Simulations of Star Clusters - V. The …

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We outline the steps needed in to calibrate the Monte Carlo code in order to perform large scale simulations of real globular clusters. We calibrate the results against $N$-body simulations for $N = 2500$, 10000 and for the old open cluster…

天体物理学 · 物理学 2009-11-13 Mirek Giersz , Douglas C. Heggie

We introduce a new prescription for the evolution of globular clusters (GCs) during the initial embedded gas phase into a Monte Carlo method. With a simplified version of the Monte Carlo MOCCA code embedded in the AMUSE framework, we study…

星系天体物理 · 物理学 2022-06-29 A. Leveque , M. Giersz , S. Banerjee , E. Vesperini , J. Hong , S. Portegies Zwart

[abridged] We extend our analysis of the dynamical evolution of simple star cluster models, in order to provide comparison standards that will aid in interpreting the results of more complex realistic simulations. We augment our previous…

天体物理学 · 物理学 2008-11-26 M. Trenti , D. C. Heggie , P. Hut

We have developed a new numerical code to simulate the joint evolution of a massive black hole (MBH) and a surrounding stellar cluster at the center of a galaxy. The physics treated in the simulations include: 2-body relaxation, stellar…

天体物理学 · 物理学 2007-05-23 Marc Freitag , Willy Benz

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

[abridged] We present a unified picture for the evolution of star clusters on the two-body relaxation timescale. We use direct N-body simulations of star clusters in a galactic tidal field starting from different multi-mass King models, up…

星系天体物理 · 物理学 2014-11-20 Michele Trenti , Enrico Vesperini , Mario Pasquato

We analyze post-refurbishment Hubble Space Telescope images of four globular clusters in M31. The ability to resolve stars to below the horizontal branch permits us to use star counts to extend the surface brightness profiles determined…

We have recently written a new code to simulate the long term evolution of spherical clusters of stars. It is based on the pioneering Monte Carlo scheme proposed by Henon in the 70's. Our code has been devised in the specific goal to treat…

天体物理学 · 物理学 2009-11-07 Marc Freitag , Willy Benz

We investigate the evolution of binary fractions in star clusters using N-body models of up to 100000 stars. Primordial binary frequencies in these models range from 5% to 50%. Simulations are performed with the NBODY4 code and include a…

天体物理学 · 物理学 2009-06-23 Jarrod R. Hurley , Sverre J. Aarseth , Michael M. Shara

We describe the public release of the Cluster Monte Carlo Code (CMC) a parallel, star-by-star $N$-body code for modeling dense star clusters. CMC treats collisional stellar dynamics using H\'enon's method, where the cumulative effect of…

We model the dynamics of test binaries in isotropic, multi-mass models of galactic globular clusters. The evolution of binary orbits through the cluster potentials is modeled, including second order diffusion terms, and probabilities for…

天体物理学 · 物理学 2008-11-26 Steinn Sigurdsson , E. S. Phinney

A revision of Stodolkiewicz's Monte-Carlo code is used to simulate evolution of star clusters. The new method treats each superstar as a single star and follows the evolution and motion of all individual stellar objects. The first…

天体物理学 · 物理学 2009-10-30 Mirek Giersz

Using a Monte Carlo code, we construct a dynamic evolutionary model of the Galactic globular cluster M22 (NGC6656). The initial conditions are chosen so that, after about 12Gyr of stellar and dynamical evolution, the model is an approximate…

星系天体物理 · 物理学 2015-06-18 Douglas C. Heggie , Mirek Giersz

We present results of a series of Monte Carlo simulations investigating the imprint of a central intermediate-mass black hole (IMBH) on the structure of a globular cluster. We investigate the three-dimensional and projected density…

星系天体物理 · 物理学 2012-07-12 Stefan Umbreit , John M. Fregeau , Sourav Chatterjee , Frederic A. Rasio

We recently used a large set of Monte Carlo simulations of globular clusters (GCs) to define new fully empirical parameters (named A5, P5, and S2.5) able to trace the internal dynamical evolution of dense stellar systems. These parameters…

星系天体物理 · 物理学 2026-01-27 Barbara Lanzoni , Francesco R. Ferraro , Enrico Vesperini

We explore the behaviour of accreting protoclusters with a Monte Carlo dynamical code in order to evaluate the relative roles of accretion, two body relaxation and stellar collisions in the cluster evolution. We corroborate the suggestion…

太阳与恒星天体物理 · 物理学 2015-05-18 Olaf Davis , Cathie Clarke , Marc Freitag

We review what has been learned recently using N-body simulations about the evolution of globular clusters. While simulations of star clusters have become more realistic, and now include the evolution of single and binary stars, the…

天体物理学 · 物理学 2007-05-23 Douglas C. Heggie

Context. Origin and evolution of blue stragglers in globular clusters is still a matter of debate. Aims. The aim of the present investigation is to reproduce the evolutionary history of four binary blue stragglers in four different…

太阳与恒星天体物理 · 物理学 2017-01-11 K. Stepien , A. A. Pamyatnykh , M. Rozyczka

We have used a proper combination of multiband high-resolution {\it HST-WFPC2} and wide-field ground based observations to image the galactic globular cluster NGC 6266 (M62). The extensive photometric data set allows us to determine the…

天体物理学 · 物理学 2008-11-26 G. Beccari , F. R. Ferraro , A. Possenti , E. Valenti , L. Origlia , R. T. Rood

In this paper we present the results of two detailed N-body simulations of the interaction of a sample of four massive globular clusters in the inner region of a triaxial galaxy. A full merging of the clusters takes place, leading to a…

天体物理学 · 物理学 2009-11-13 R. Capuzzo-Dolcetta , P. Miocchi