EFFECTS OF TIDAL SHOCKS ON THE EVOLUTION OF GLOBULAR CLUSTERS

@article{Gnedin1998EFFECTSOT,
  title={EFFECTS OF TIDAL SHOCKS ON THE EVOLUTION OF GLOBULAR CLUSTERS},
  author={Oleg Y. Gnedin and Hyung-Mok Lee and Jeremiah P. Ostriker},
  journal={The Astrophysical Journal},
  year={1998},
  volume={522},
  pages={935-949}
}
We present new Fokker-Planck models of the evolution of globular clusters, including gravitational tidal shocks. We extend our calculations beyond the core collapse by adopting three-body binary heating. EUects of the shocks are included by adding the tidal shock diUusion coefficients to the ordinary Fokker-Planck equation: the —rst-order heating term, S*ET, and the second-order energy dispersion term, S*E2T. As an example, we investigate the evolution of models for the globular cluster NGC… Expand
Effects of external tidal field on the evolution of the outer regions of multi-mass star clusters
We present N-body simulations (including an initial mass function) of globular clusters in the Galaxy in order to study effects of the tidal field systematically on the properties of the outer partsExpand
TIDAL SHOCKING AND DESTRUCTION OF GLOBULAR CLUSTERS
Abstract Dynamical evolution of globular clusters is strongly influenced and often driven by tidal interactions with the Galaxy. Passing through the Galactic disk or near the bulge, globular clustersExpand
The influence of dynamical relaxation and tidal shocking on the evolution of star clusters
Abstract We report results of collisional N-body calculations, aimed to study the evolution of star clusters moving on elliptic orbits through their parent galaxies. Our clusters consist ofExpand
Tidal Tails of Globular Clusters
We present N-body simulations of globular clusters including gravitational field of the Galaxy, in order to study effects of tidal field systematically on the shape of outer parts of globularExpand
Dynamical Evolution of the Mass Function of Globular Star Clusters
We present a series of simple, largely analytical models to compute the effects of disruption on the mass function of star clusters. Our calculations include evaporation by two-body relaxation andExpand
Dynamical Evolution of Globular Clusters in Hierarchical Cosmology
We test the hypothesis that metal-poor globular clusters form within disk galaxies at redshifts z > 3. We calculate the orbits of model clusters in the time-variable gravitational potential of aExpand
The evolution of globular clusters
Abstract Taking a wide range of the initial conditions, including spatial density distribution and mass function etc, the dynamical evolution of globular clusters in the Milky Way is investigated inExpand
Merging of Globular Clusters in Inner Galactic Regions. I. Do They Survive the Tidal Interaction
The main topic of this paper is the investigation of the modes of interaction of globular clusters (GCs) moving in the inner part of a galaxy. This is tackled by means of high-resolution N-bodyExpand
Modeling the Disruption of the Globular Cluster Palomar 5 by Galactic Tides
TLDR
The simulations unambiguously predict the destruction of Pal 5 at its next disk crossing in ~110 Myr, suggesting that many more similar systems could once have populated the inner parts of the Milky Way but have been transformed into debris streams by the Galactic tidal field. Expand
More on the structure of tidal tails
We investigate the epicyclic motion of stars escaping from star clusters. Using streaklines, we visualise the path of escaping stars and show how epicyclic motion leads to over- and underdensities inExpand
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 45 REFERENCES
Destruction of the Galactic Globular Cluster System
We investigate the dynamical evolution of the Galactic globular cluster system in considerably greater detail than has been done hitherto, finding that destruction rates are significantly larger thanExpand
On the Self-consistent Response of Stellar Systems to Gravitational Shocks
We study the reaction of a globular star cluster to a time-varying tidal perturbation (gravitational shock) using self-consistent N-body simulations and address two questions. First, to what extentExpand
Evolution of tidally truncated globular clusters with anisotropy
The evolution of tidally truncated globular clusters is investigated by integrating two-dimensional Fokker-Planck equation that allows the development of velocity anisotropy. We start from theExpand
The effect of the Galactic spheroid on globular cluster evolution
We study the combined effects of relaxation, tidal heating and binary heating on globular cluster evolution, exploring the physical consequences of external effects and examining evolutionary trendsExpand
Tidal Shocking by Extended Mass Distributions
We derive expressions for the tidal field exerted by a spherically symmetric galaxy having an extended mass distribution and use our analysis to calculate tidal heating of stars in a globular clusterExpand
Evolution of globular clusters in the Galaxy
Globular cluster evolution is studied, modeling relaxation and energy exchange between the stars. A comprehensive survey is presented of Galactic globular cluster evolution until core collapse. MassExpand
Tidal-Shock Relaxation: A Reexamination of Tidal Shocks in Stellar Systems
The phenomenon of \tidal{shock relaxation" is deened and quantitatively estimated. We show that the second order term h((E) 2 i ts , which has usually been neglected in the treatment of tidal shocksExpand
Tidal evolution of globular clusters. II - The effects of Galactic tidal field and diffusion
The tidal evolution of globular clusters subject to various degrees of the internal diffusion process is investigated. In cases of negligible diffusion, clusters are found to be tidally truncated toExpand
Influence of the Stellar Mass Function on the Evaporation Rate of Tidally Limited Postcollapse Globular Clusters
We study the rate of escape of stars (``evaporation'') from tidally-limited postcollapse globular clusters having a power-law distribution of stellar masses. We use a multi-mass Fokker-Planck codeExpand
Evolution of the Galactic globular cluster system
We study the dynamical evolution of disc and halo globular clusters in the Milky Way using a series of Fokker-Planck calculations combined with parametric statistical models. Our sample of 111Expand
...
1
2
3
4
5
...