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We introduce version two of the fast star cluster evolution code Evolve Me A Cluster of StarS (EMACSS). The first version (Alexander & Gieles) assumed that cluster evolution is balanced for the majority of the life-cycle, meaning that the…

星系天体物理 · 物理学 2015-06-17 Mark Gieles , Poul Alexander , Henny Lamers , Holger Baumgardt

We present a new version of the fast star cluster evolution code Evolve Me A Cluster of StarS (EMACSS). While previous versions of EMACSS reproduced clusters of single-mass stars, this version models clusters with an evolving stellar…

星系天体物理 · 物理学 2015-06-19 Poul Alexander , Mark Gieles , Henny Lamers , Holger Baumgardt

We present an upgraded version of the \MOCCA code for the study of dynamical evolution of globular clusters (GCs) and its first application to the study of evolution of multiple stellar populations. We explore initial conditions spanning…

We study the dynamical evolution of globular clusters containing populations of primordial binaries, using our newly updated Monte Carlo cluster evolution code with the inclusion of direct integration of binary scattering interactions. We…

天体物理学 · 物理学 2015-06-24 John M. Fregeau , Frederic A. Rasio

We introduce the star cluster evolution code Evolve Me A Cluster of StarS (EMACSS), a simple yet physically motivated computational model that describes the evolution of some fundamental properties of star clusters in static tidal fields.…

星系天体物理 · 物理学 2015-06-04 Poul E. R. Alexander , Mark Gieles

A comprehensive study of the co-evolution of globular cluster systems (GCS) in galaxies requires the ability to model both the large scale dynamics (0.01 - 10 kpc) regulating their orbital evolution, and the small scale dynamics (sub-pc -…

星系天体物理 · 物理学 2022-06-29 A. Leveque , M. Giersz , M. Arca-Sedda , A. Askar

We have developed a new parallel supercomputer code based on Henon's Monte Carlo method for simulating the dynamical evolution of globular clusters. This new code allows us to calculate the evolution of a cluster containing a realistic…

天体物理学 · 物理学 2007-05-23 F. A. Rasio

We describe Monte Carlo models for the dynamical evolution of the nearby globular cluster NGC 6397. The code includes treatments of two-body relaxation, most kinds of three- and four-body interactions involving primordial binaries and those…

星系天体物理 · 物理学 2009-11-13 M. Giersz , D. C. Heggie

We describe Monte Carlo models for the dynamical evolution of the nearby globular cluster M4. The code includes treatments of two-body relaxation, three- and four-body interactions involving primordial binaries and those formed dynamically,…

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

We present a new implementation of the Monte Carlo method to simulate the evolution of star clusters. The major improvement with respect to the previously developed codes is the treatment of the external tidal field taking into account for…

太阳与恒星天体物理 · 物理学 2015-06-22 A. Sollima , A. Mastrobuono Battisti

N-body simulations are used to model the early evolution of globular clusters. These simulations include residual gas which was not turned into stars which is expelled from the globular cluster by the actions of massive stars. The results…

天体物理学 · 物理学 2015-06-24 Simon P Goodwin

We describe Monte Carlo models for the dynamical evolution of the massive globular cluster 47 Tuc (NGC 104). The code includes treatments of two-body relaxation, most kinds of three- and four-body interactions involving primordial binaries…

星系天体物理 · 物理学 2015-05-19 Mirek Giersz , Douglas C. Heggie

We have carried out a large grid of N-body simulations in order to investigate if mass-loss as a result of primordial gas expulsion can be responsible for the large fraction of second generation stars in globular clusters (GCs) with…

星系天体物理 · 物理学 2015-07-14 Pouria Khalaj , Holger Baumgardt

We have developed a new simulation code aimed at studying the stellar dynamics of a galactic central star cluster surrounding a massive black hole. In order to include all the relevant physical ingredients (2-body relaxation, stellar mass…

天体物理学 · 物理学 2009-11-06 Marc Freitag , Willy Benz

(abridged) In this paper, we constrain the properties of primordial binary populations in Galactic globular clusters using the MOCCA Monte Carlo code for cluster evolution. Our results are compared to the observations of Milone et al.…

太阳与恒星天体物理 · 物理学 2015-06-23 Nathan W. C. Leigh , Mirek Giersz , Michael Marks , Jeremy J. Webb , Arkadiusz Hypki , Craig O. Heinke , Pavel Kroupa , Alison Sills

We outline the steps needed in order to incorporate the evolution of single and binary stars into a particular Monte Carlo code for the dynamical evolution of a star cluster. We calibrate the results against N-body simulations, and present…

天体物理学 · 物理学 2008-01-25 Mirek Giersz , Douglas C. Heggie , Jarrod R. Hurley

We present the implementation of updated stellar evolution recipes in the codes \texttt{Nbody6++GPU, MOCCA} and \texttt{McLuster}. We test them through numerical simulations of star clusters containing $1.1\times 10^5$ stars (with…

Astronomers have constructed models of globular clusters for over 100 years. These models mainly fall into two categories: (i) static models, such as King's model and its variants, and (ii) evolutionary models. Most attention has been given…

天体物理学 · 物理学 2009-11-13 D. C. Heggie , M. Giersz

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 have developed a novel Monte Carlo method for simulating the dynamical evolution of stellar systems in arbitrary geometry. The orbits of stars are followed in a smooth potential represented by a basis-set expansion and perturbed after…

星系天体物理 · 物理学 2014-12-04 Eugene Vasiliev