English
Related papers

Related papers: Monte Carlo Simulations of Globular Cluster Evolut…

200 papers

We study the first 100Myr of the evolution of isolated star clusters initially containing 144179 stars, including 13107 (10%) primordial hard binaries. Our calculations include the effects of both stellar and binary evolution. Gravitational…

Astrophysics · Physics 2008-11-26 Simon Portegies Zwart , Steve McMillan , Jun Makino

We investigate effects of hardness of primordial binaries on whole evolution of star clusters by means of N-body simulations. Using newly developed code, GORILLA, we simulated eleven N=16384 clusters with primordial binaries whose binding…

Astrophysics of Galaxies · Physics 2015-05-19 Ataru Tanikawa , Toshiyuki Fukushige

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 investigate how the multiplicity of binary, triple and quadruple star systems changes as the systems evolve from the zero-age main-sequence to the Hubble time. We find the change in multiplicity fractions over time for each data set,…

Solar and Stellar Astrophysics · Physics 2024-12-19 Holly P. Preece , A. Vigna-Gómez , A. S. Rajamuthukumar , P. Vynatheya , J. Klencki

The formation of stars with light-element abundance variations in globular clusters and the subsequent dynamical evolution of these multiple populations remains an open question. One of the most widely discussed is the AGB scenario, in…

Astrophysics of Galaxies · Physics 2025-10-09 Mirek Giersz , Abbas Askar , Arkadiusz Hypki , Jongsuk Hong , Grzegorz Wiktorowicz , Lucas Hellstrom

A number of recent observational studies of Galactic globular clusters have measured the variation in the slope of a cluster's stellar mass function $\alpha$ with clustercentric distance $r$. In order to gather a deeper understanding of the…

Astrophysics of Galaxies · Physics 2016-09-07 Jeremy J. Webb , Enrico Vesperini

The rotational evolution of a young stellar population can give informations about the rotation pattern of more evolved clusters. Combined with rotational period values of thousands of young stars and theoretical propositions about the…

Solar and Stellar Astrophysics · Physics 2021-11-18 Maria Jaqueline Vasconcelos , Jérôme Bouvier , Florian Gallet , Edson A. Luz Filho

Star clusters are the building blocks of galaxies. They are composed of stars of nearly equal age and chemical composition, allowing us to use them as chronometers and as testbeds for gauging stellar evolution. It has become clear recently…

Solar and Stellar Astrophysics · Physics 2020-01-08 Chen Wang , Norbert Langer , Abel Schootemeijer , Norberto Castro , Sylvia Adscheid , Pablo Marchant , Ben Hastings

In this paper we use N-body simulations to study the effects of primordial mass segregation on the early and long-term evolution of star clusters. Our simulations show that in segregated clusters early mass loss due to stellar evolution…

Astrophysics of Galaxies · Physics 2011-02-11 Enrico Vesperini , Stephen L. W. McMillan , Simon Portegies Zwart

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…

Solar and Stellar Astrophysics · Physics 2015-06-22 A. Sollima , A. Mastrobuono Battisti

Binary stars are common in star clusters and galaxies, but the detailed effects of binary evolution are not taken into account in some colour-magnitude diagram (CMD) studies. This paper studies the CMDs of twelve globular clusters via…

Solar and Stellar Astrophysics · Physics 2015-06-12 Zhongmu Li , Caiyan Mao , Ruheng Li , Ruxi Li , Maocai Li

Fragmentation and fission of giant molecular clouds occasionally results in a pair of gravitationally bound star clusters that orbit their mutual centre of mass for some time, under the influence of internal and external perturbations. We…

Astrophysics of Galaxies · Physics 2016-02-17 R. Priyatikanto , M. B. N. Kouwenhoven , M. I. Arifyanto , H. R. T. Wulandari , S. Siregar

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…

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

We investigate the effects of the addition of pre-main sequence evolution to star cluster simulations. We allowed stars to follow pre-main sequence tracks that begin at the deuterium burning birthline and end at the zero age main sequence.…

Astrophysics · Physics 2009-11-13 R. Wiersma , A. Sills , S. Portegies Zwart

Context: Field stars are not always single stars, but can often be found in bound double systems. Since binary frequencies in the birth places of stars, young embedded clusters, are sometimes even higher than on average the question arises…

Astrophysics of Galaxies · Physics 2015-05-27 Thomas Kaczmarek , Christoph Olczak , Susanne Pfalzner

This paper describes an N-body model for the dynamical evolution of the nearby globular cluster M4. The initial conditions, with N = 484710 particles, were generated from a published study of this cluster with a Monte Carlo code. With the…

Astrophysics of Galaxies · Physics 2015-06-22 Douglas C. Heggie

The evolution of rotating, isolated clusters of stars up to core-collapse is investigated with n-body numerical codes. The simulations start off from axisymmetric generalisations of King profiles, with added global angular momentum. In this…

Astrophysics · Physics 2007-05-23 Christian Boily

We have performed fully self-consistent $N$-body simulations of star clusters near the Galactic center (GC). Such simulations have not been performed because it is difficult to perform fast and accurate simulations of such systems using…

Astrophysics · Physics 2009-11-13 M. Fujii , M. Iwasawa , Y. Funato , J. Makino

Our current understanding of the stellar initial mass function and massive star evolution suggests that young globular clusters may have formed hundreds to thousands of stellar-mass black holes, the remnants of stars with initial masses…

Astrophysics of Galaxies · Physics 2015-06-22 Meagan Morscher , Bharath Pattabiraman , Carl Rodriguez , Frederic A. Rasio , Stefan Umbreit