Testing lowered isothermal models with direct N-body simulations of globular clusters – II. Multimass models

@article{Peuten2017TestingLI,
  title={Testing lowered isothermal models with direct N-body simulations of globular clusters – II. Multimass models},
  author={Miklos Peuten and Alice Zocchi and Mark Gieles and Vincent H'enault-Brunet},
  journal={Monthly Notices of the Royal Astronomical Society},
  year={2017},
  volume={470},
  pages={2736-2761}
}
Lowered isothermal models, such as the multimass Michie–King models, have been successful in describing observational data of globular clusters. In this study, we assess whether such models are able to describe the phase space properties of evolutionary N-body models. We compare the multimass models as implemented in LIMEPY (Gieles & Zocchi) to N-body models of star clusters with different retention fractions for the black holes and neutron stars evolving in a tidal field. We find that… Expand

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References

SHOWING 1-10 OF 84 REFERENCES
Testing lowered isothermal models with direct N-body simulations of globular clusters
Several self-consistent models have been proposed, aiming at describing the phase-space distribution of stars in globular clusters. This study explores the ability of the recently proposed limepyExpand
Monte Carlo simulations of star clusters – V. The globular cluster M4
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 involvingExpand
Star clusters with primordial binaries ¿ II. Dynamical evolution of models in a tidal field
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 realisticExpand
Evolution of multimass globular clusters in the Galactic tidal field with the effects of velocity anisotropy
ABSTRA C T We study the evolution of globular clusters with mass spectra under the influence of the steady Galactic tidal field, including the effects of velocity anisotropy. Similarly to singlemassExpand
Star clusters with primordial binaries – I. Dynamical evolution of isolated models
In order to interpret the results of complex realistic star cluster simulations, which rely on many simplifying approximations and assumptions, it is essential to study the behaviour of even moreExpand
N-body modelling of globular clusters: masses, mass-to-light ratios and intermediate-mass black holes
We have determined the masses and mass-to-light ratios of 50 Galactic globular clusters by comparing their velocity dispersion and surface brightness profiles against a large grid of 900 N-bodyExpand
Direct N-body simulations of globular clusters – I. Palomar 14
We present the first ever direct N-body computations of an old Milky Way globular cluster over its entire lifetime on a star-by-star basis. Using recent GPU hardware at Bonn University, we haveExpand
Testing multimass dynamical models of star clusters with real data: mass segregation in three Galactic globular clusters
We present the results of the analysis of deep photometric data for a sample of three Galactic globular clusters (NGC5466, NGC6218 and NGC6981) with the aim of estimating their degree of massExpand
A complete N-body model of the old open cluster M67
The old open cluster M67 is an ideal testbed for current cluster evolution models because of its dynamically evolved structure and rich stellar populations that show clear signs of interactionExpand
TIDAL DISRUPTION, GLOBAL MASS FUNCTION, AND STRUCTURAL PARAMETER EVOLUTION IN STAR CLUSTERS
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 fromExpand
...
1
2
3
4
5
...