English
Related papers

Related papers: The initial conditions of observed star clusters -…

200 papers

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…

Astrophysics · Physics 2009-11-13 Fred C. Adams , Eva M. Proszkow , Marco Fatuzzo , Philip C. Myers

This paper investigates the dynamical evolution of embedded stellar clusters from the protocluster stage, through the embedded star-forming phase, and out to ages of 10 Myr -- after the gas has been removed from the cluster. The relevant…

Solar and Stellar Astrophysics · Physics 2014-11-20 Eva-Marie Proszkow , Fred C. Adams

We investigate how the properties of escaping stars are related to the initial conditions of their birth clusters. We find that the number of escaping stars, their spatial distribution, and their kinematics show a dependence on the initial…

Astrophysics of Galaxies · Physics 2015-06-03 Richard J. Allison

We present a numerical study, based on Monte Carlo simulations, aimed at defining new empirical parameters measurable from observations and able to trace the different phases of star cluster dynamical evolution. As expected, a central…

Astrophysics of Galaxies · Physics 2022-02-23 B. Bhat , B. Lanzoni , F. R. Ferraro , E. Vesperini

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 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…

We use N-body integration to follow the evolution of clusters of 200 binary systems with different initial half mass radii $R_{0.5}$. We also simulate single-star clusters. All clusters evolve according to the same $n(t)$ curve, where…

Astrophysics · Physics 2015-06-24 Pavel Kroupa

In previous papers of the series we used a combination of optical and near-infrared colours to derive constraints on the relative age structure in globular cluster systems. Here, we present the details, strength and limitations of our…

Astrophysics · Physics 2009-11-10 Maren Hempel , Markus Kissler-Patig

(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.…

Solar and Stellar Astrophysics · Physics 2015-06-23 Nathan W. C. Leigh , Mirek Giersz , Michael Marks , Jeremy J. Webb , Arkadiusz Hypki , Craig O. Heinke , Pavel Kroupa , Alison Sills

We explore the evolution of various properties of multiple-population globular clusters (GCs) for a broad range of initial conditions. We simulated over 200 GC models using the MOCCA Monte Carlo code and find that present-day properties…

We study the dynamical evolution of globular clusters using our new 2-D Monte Carlo code, and we calculate the lifetimes of clusters in the Galactic environment. We include the effects of a mass spectrum, mass loss in the Galactic tidal…

Astrophysics · Physics 2015-06-24 Kriten J. Joshi , Cody P. Nave , Frederic A. Rasio

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…

Astrophysics · Physics 2009-11-13 D. C. Heggie , M. 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…

Astrophysics of Galaxies · Physics 2015-06-18 Douglas C. Heggie , Mirek Giersz

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…

Astrophysics of Galaxies · Physics 2015-05-19 Mirek Giersz , Douglas C. Heggie

We present a new parallel supercomputer implementation of the Monte-Carlo method for simulating the dynamical evolution of globular star clusters. Our method is based on a modified version of Henon's Monte-Carlo algorithm for solving the…

Astrophysics · Physics 2009-10-31 Kriten Joshi , Frederic Rasio , Simon Portegies Zwart

In spite of significant recent and ongoing research efforts, most of the early evolution and long-term fate of young massive star clusters remain clouded in uncertainties. Here, I discuss our understanding of the initial conditions of star…

Solar and Stellar Astrophysics · Physics 2015-05-14 Richard de Grijs

We present the results of a new study of mass segregation in two-component star clusters, based on a large number of numerical N-body simulations using our recently developed dynamical Monte Carlo code. Specifically, we follow the dynamical…

Astrophysics · Physics 2009-11-07 J. M. Fregeau , K. J. Joshi , S. F. Portegies Zwart , F. A. Rasio

The new approach outlined in Paper I (Spurzem \& Giersz 1996) to follow the individual formation and evolution of binaries in an evolving, equal point-mass star cluster is extended for the self-consistent treatment of relaxation and close…

Astrophysics · Physics 2009-10-31 M. Giersz , R. Spurzem

Star cluster formation is a major mode of star formation in the extreme conditions of interacting galaxies and violent starbursts. Young clusters are observed to form in a variety of such galaxies, a substantial number resembling the…

Astrophysics · Physics 2007-05-23 P. Anders , U. Fritze--v. Alvensleben , R. de Grijs

Star clusters are found in all sorts of environments and their formation and evolution is inextricably linked to the star formation process. Their eventual destruction can result from a number of factors at different times, but the process…

Astrophysics of Galaxies · Physics 2011-10-05 I. S. Konstantopoulos , N. Bastian , M. Gieles , H. J. G. L. M. Lamers