Evolution of Star Clusters in Time-variable Tidal Fields
نویسندگان
چکیده
منابع مشابه
Dynamical evolution of star clusters in tidal fields
We report results of a large set of N -body calculations aimed to study the evolution of multi-mass star clusters in external tidal fields. Our clusters start with the same initial mass-functions, but varying particle numbers, orbital types and density profiles. Our main focus is to study how the stellar mass-function and other cluster parameters change under the combined influence of stellar e...
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We have carried out a series of small scale collisional N-body calculations of single-mass star clusters to investigate the dependence of the lifetime of star clusters on their initial parameters. Our models move through an external galaxy potential with a logarithmic density profile and they are limited by a cut-off radius. In order to find scaling relations between the lifetime of star cluste...
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Based on recent findings of a formation mechanism of substructure in tidal tails by Küpper, Macleod & Heggie (2008) we investigate a more comprehensive set of N -body models of star clusters on orbits about a Milky-Way-like potential. We find that the predicted epicyclic overdensities arise in any tidal tail no matter which orbit the cluster follows as long as the cluster lives long enough for ...
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We present a simple analytical description of the disruption of star clusters in a tidal field. The cluster disruption time, defined as tdis = {d ln M/dt} , depends on the mass M of the cluster as tdis = t0(M/M⊙) γ with γ = 0.62 for clusters in a tidal field, as shown by empirical studies of cluster samples in different galaxies and by N-body simulations. Using this simple description we derive...
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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 realistic simulations. We augment our previous primordial-binary simulations by introducing a tidal field, and starting with King models of different central concentrations. We present the results of N -body calculati...
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 2017
ISSN: 1538-4357
DOI: 10.3847/1538-4357/aa5da0