English
Related papers

Related papers: MOCCA code for star cluster simulations - VI. Bimo…

200 papers

Blue straggler stars (BSS), one of the most massive members of star clusters, have been used for over a decade to investigate mass segregation and estimate the dynamical ages of globular clusters (GCs) and open clusters (OCs). This work is…

Astrophysics of Galaxies · Physics 2023-09-07 Khushboo K. Rao , Kaushar Vaidya , Manan Agarwal , Shanmugha Balan , Souradeep Bhattacharya

A revision of Stod\'o{\l}kiewicz's Monte Carlo code is used to simulate evolution of large star clusters. The survey on the evolution of multi-mass N-body systems influenced by the tidal field of a parent galaxy and by stellar evolution is…

Astrophysics · Physics 2007-05-23 Mirek Giersz

Using Monte Carlo simulations of globular clusters we developed a method separating metallicity effects from age effects on observed integrated ugriz colors. We demonstrate that these colors do not evolve with time significantly after an…

Instrumentation and Methods for Astrophysics · Physics 2015-06-09 Christoph Euler

In this chapter we review the various suggested channels for the formation and evolution of blue straggler stars (BSSs) in different environments and their observational predictions. These include mass transfer during binary stellar…

Solar and Stellar Astrophysics · Physics 2015-06-22 Hagai B. Perets

We used high-quality images acquired with the WFC3 on board the HST to probe the blue straggler star (BSS) population of the Galactic globular cluster NGC 362. We have found two distinct sequences of BSS: this is the second case, after M…

Solar and Stellar Astrophysics · Physics 2015-06-17 E. Dalessandro , F. R. Ferraro , D. Massari , B. Lanzoni , P. Miocchi , G. Beccari , A. Bellini , A. Sills , S. Sigurdsson , A. Mucciarelli , L. Lovisi

We present a homogeneous study of blue straggler stars across ten outer halo globular clusters, three classical dwarf spheroidal and nine ultra-faint galaxies based on deep and wide-field photometric data taken with MegaCam on the…

Astrophysics of Galaxies · Physics 2015-06-16 Felipe A. Santana , Ricardo R. Munoz , Marla Geha , Patrick Cote , Peter Stetson , Joshua D. Simon , S. G. Djorgovski

We present an end-to-end description of the formation process of globular clusters (GCs) which combines a treatment for their formation and dynamical evolution within galaxy haloes with a state-of-the-art semi-analytic simulation of galaxy…

We introduce and present results from the COCOA (Cluster simulatiOn Comparison with ObservAtions) code that has been developed to create idealized mock photometric observations using results from numerical simulations of star cluster…

Astrophysics of Galaxies · Physics 2018-01-24 Abbas Askar , Mirek Giersz , Wojciech Pych , Emanuele Dalessandro

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 the evolution of young star clusters using N-body simulations. We confirm that subvirial and fractal-structured clusters will dynamically mass segregate on a short timescale (within 0.5 Myr). We adopt a modified…

Astrophysics of Galaxies · Physics 2015-05-27 Jincheng Yu , Richard de Grijs , Li Chen

This paper presents $N$-body and stochastic models that describe the motion of tracer particles in a potential that contains a large population of extended substructures. Fluctuations of the gravitational field induce a random walk of…

Astrophysics of Galaxies · Physics 2019-10-16 Jorge Peñarrubia

More and more observations indicate that young star clusters could retain imprints of their formation process. In particular, the degree of substructuring and rotation are possibly the direct result of the collapse of the parent molecular…

Astrophysics of Galaxies · Physics 2020-06-17 Alessandro Ballone , Michela Mapelli , Ugo N. Di Carlo , Stefano Torniamenti , Mario Spera , Sara Rastello

We study the dynamical evolution of globular clusters using our 2D Monte Carlo code with the inclusion of primordial binary interactions for equal-mass stars. We use approximate analytical cross sections for energy generation from…

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

In this third of a series of papers related to cataclysmic variables (CVs) and related objects, we analyse the population of CVs in a set of 12 globular cluster models evolved with the MOCCA Monte Carlo code, for two initial binary…

Astrophysics of Galaxies · Physics 2017-03-07 Diogo Belloni , Mónica Zorotovic , Matthias R. Schreiber , Nathan W. C. Leigh , Mirek Giersz , Abbas 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…

Astrophysics · Physics 2007-05-23 F. A. Rasio

Blue Straggler Stars (BSSs) are observed in Galactic globular clusters and old open clusters. The radial distribution of BSSs has been used to diagnose the dynamical evolution of globular clusters. For the first time, with a reliable sample…

Astrophysics of Galaxies · Physics 2019-04-03 Souradeep Bhattacharya , Kaushar Vaidya , W. P. Chen , Giacomo Beccari

In this paper, which is the first in a series of papers associated with cataclysmic variables and related objects, we introduce the CATUABA code, a numerical machinery written for analysis of the MOCCA simulations, and show some first…

Astrophysics of Galaxies · Physics 2016-08-12 Diogo Belloni , Mirek Giersz , Abbas Askar , Nathan Leigh , Arkadiusz Hypki

The theory of stellar escape from globular clusters (GCs) dates back nearly a century, especially the gradual evaporation of GCs via two-body relaxation coupled with external tides. More violent ejection can also occur via strong…

Star cluster formation and assembly occurs inside filamentary and turbulent molecular clouds, which imprints both spatial and kinematic substructure on the young cluster. In this paper, we quantify the amount and evolution of this…

Astrophysics of Galaxies · Physics 2025-07-02 Edwin Laverde-Villarreal , Alison Sills , Claude Cournoyer-Cloutier , Veronica Arias Callejas

We present a technique to identify the most probable dynamical formation scenario for an observed binary or triple system containing one or more merger products or, alternatively, to rule out the possibility of a dynamical origin. Our…

Solar and Stellar Astrophysics · Physics 2015-05-19 Nathan Leigh , Alison Sills