M80 globular cluster logo virtual observing


The aim of this web site is to present a convenient entry point for various activities related to our simulations of stellar systems. The GRAPE project, short for GRAvitational PipelinE, has produced special purpose hardware for stellar dynamics, at a speed approaching 100 Teraflops. We offer various open source software environments such as NEMO and STARLAB for setting up, running, and analyzing large-scale simulations in stellar dynamics. Another open source toolbox is the PARTIVIEW visualization package, which can be used on various platforms, from laptops to virtual reality environments such as the Cave at NCSA and the Hayden Planetarium in New York City. Finally, we are in the process of setting up our ARCHIVE system, where we plan to make the full results of our largest runs freely available for guest observers. We are currently coordinating these efforts with various Virtual Observatory initiatives.

The manybody.org web page also includes the home page for MODEST (MOdeling DEnse STellar systems), a collaboration between various groups working in stellar dynamics, stellar evolution, and stellar hydrodynamics.


For many years we have accumulated information about our hardware and software projects at various websites, such as those for NEMO, STARLAB, and GRAPE, three projects that started in the late eighties. By the end of the year 2000, we decided to acquire our own domain name, manybody.org. At first we simply used this site to provide pointers, but we intend to provide a more structured set of guides to the various projects we are involved in. We will try to update these introductory pages frequently. Note for colleagues: if you would like us to link your web site from an appropriate leaf in our site tree, please send us your address and a very brief description of the content of your site.


Piet Hut, Jun Makino, Steve McMillan, Peter Teuben, with contributions by Simon Portegies Zwart (stellar evolution), Stuart Levy (visualization), and many others (see subsequent pages)


Press release, American Astronomical Society meeting, January 2002
Press release, NASA HQ, January 2003


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Please direct comments, criticisms, corrections and contributions to Steve McMillan: steve (at) physics.drexel.edu.