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Dynamical Evolution of Dense Stellar Systems (IAU S246)

2008-06-12 Science
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Release : 2008-06-12
Genre : Science
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Book Rating : 687/5 ( reviews)

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Book Synopsis Dynamical Evolution of Dense Stellar Systems (IAU S246) by : International Astronomical Union. Symposium

Download or read book Dynamical Evolution of Dense Stellar Systems (IAU S246) written by International Astronomical Union. Symposium. This book was released on 2008-06-12. Available in PDF, EPUB and Kindle. Book excerpt: Dense stellar systems lie at the interface between dynamics, stellar evolution, and galaxy formation, and they provide us with an ideal laboratory to understand many different aspects of these important fields as well as to explore the interplay between them. The complete study of dense stellar systems is a very challenging task which requires the collaboration and the exchange of ideas of astronomers and physicists with observational and theoretical expertise in galactic and extra-galactic astronomy, stellar dynamics, hydrodynamics, stellar evolution, as well as knowledge of many aspects of computational physics. IAU Symposium 246 brought together experts in all these areas to cover the broad field of dense stellar systems with particular emphasis on the interplay between them and on the comparison between observations and simulations. This volume provides a complete review of the most recent studies in this topical research.

Dynamics and Evolution of Dense Stellar Systems

2004
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Release : 2004
Genre :
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Book Synopsis Dynamics and Evolution of Dense Stellar Systems by : John Michael Fregeau

Download or read book Dynamics and Evolution of Dense Stellar Systems written by John Michael Fregeau. This book was released on 2004. Available in PDF, EPUB and Kindle. Book excerpt: (Cont.) The results clearly show that the presence of even a small fraction of binaries in a cluster is sufficient to support the core against collapse significantly beyond the normal core collapse time predicted without the presence of binaries. For tidally truncated systems, collapse is delayed sufficiently that the cluster will undergo complete tidal disruption before core collapse. Moving a step beyond analytical prescriptions, I incorporate into the Monte-Carlo code an exact treatment of binary-single interactions, and show that the results are in good agreement with those using analytical prescriptions. The direct integration of binary interactions in the Monte-Carlo code requires a reason- ably sophisticated N-body code geared toward small-N dynamics. I present and describe in detail Fewbody, a new, freely available numerical toolkit for simulating small-N gravitational dynamics. Fewbody is a general N-body dynamics code, though it was written for the purpose of performing scattering experiments, and therefore has several features that make it well-suited for this purpose. To validate the method, I compare with several previous binary scattering experiments in the literature and find excellent agreement. As a simple example of the use of Fewbody, I calculate the destruction cross sections and characteristic lifetimes of black hole-pulsar binaries in globular clusters. At present, there should be observable ...

Dynamical Evolution of Dense Stellar Systems

2008 Galactic nuclei
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Release : 2008
Genre : Galactic nuclei
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Book Synopsis Dynamical Evolution of Dense Stellar Systems by : Enrico Vesperini

Download or read book Dynamical Evolution of Dense Stellar Systems written by Enrico Vesperini. This book was released on 2008. Available in PDF, EPUB and Kindle. Book excerpt:

The Dynamical Evolution of Rotating Stellar Systems

1997
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Release : 1997
Genre :
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Book Synopsis The Dynamical Evolution of Rotating Stellar Systems by : John S. Arabadjis

Download or read book The Dynamical Evolution of Rotating Stellar Systems written by John S. Arabadjis. This book was released on 1997. Available in PDF, EPUB and Kindle. Book excerpt:

Dynamical Evolution of Star Clusters - Confrontation of Theory and Observations

1996-06-30 Mathematics
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Release : 1996-06-30
Genre : Mathematics
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Book Synopsis Dynamical Evolution of Star Clusters - Confrontation of Theory and Observations by : International Astronomical Union. Symposium

Download or read book Dynamical Evolution of Star Clusters - Confrontation of Theory and Observations written by International Astronomical Union. Symposium. This book was released on 1996-06-30. Available in PDF, EPUB and Kindle. Book excerpt: This volume reviews recent progress in the study of dynamics of star clusters. The meeting focused on the enormous progress of both the observation and the theoretical modeling of star clusters. New results from the refurbished Hubble Space Telescope (HST) include the mass function down to the hydrogen burning limits, white dwarf sequence, and central density profiles of `post-collapse' clusters by star counts. On the theoretical side, this symposium saw the first direct evidence of gravothermal oscillation through N-body simulation, which was made possible by GRAPE-4, the dedicated special-purpose computer for N-body simulation. Numerical techniques to combine stellar evolution and dynamical evolution of the cluster were presented. The book will be of primary interest to astrophysicists.

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