Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...211.5802s&link_type=abstract
American Astronomical Society, AAS Meeting #211, #58.02; Bulletin of the American Astronomical Society, Vol. 39, p.834
Astronomy and Astrophysics
Astronomy
Scientific paper
We report on recent results from a long-term program of N-body simulations of dense star cluster evolution which is being done with GRAPE-6 systems at Indiana University and Purdue University Calumet. We have been simulating cases of star cluster evolution with a particular focus on the dynamical evolution of hard binary populations of varying size. Initial models with a range of mass spectra, both with and without primordial binary populations, are being investigated to points well beyond core collapse. Our goal is to better understand the evoultion of compact binary populations in collapsed-core globular clusters. Observations of collapsed-core clusters with HST and Chandra have revealed populations of hard, X-ray binaries well outside the cluster core. Our work is focused on understanding the diffusion of these dynamically hardened binaries to regions in the cluster halo and the robustness of this process in models with mass spectra versus single-mass models.
Cohn Haldan N.
Lugger Phyllis Minnie
Maxwell James Edward
Slavin Shawn D.
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