NEMO - A Stellar Dynamics Toolbox

What is NEMO?

• Documentation
• Images and SnapShots (data archive)
• Papers
• Installation - Anonymous FTP Source Code
• Other Software
• N-body Data Interchange Format
• Local Information
• Feedback Form

 Documentation

• The Users and Programmers Guide is an extensive (150 pages) manual. It's four major parts give a general introduction, a cookbook with many examples, a programmers guide and an appendix with many reference sections.

NOTE: This manual is outdated, and will be updated once our latex2html converter is fixed. In the mean time you can download a compressed postscript version of the manual.
• The Survival Guide is intended for the casual usual, who is familiar with operating packages within UNIX. ( somewhat outdated )
• A summary of features .
• A Tutorial for the eager users who want to see what you can do, and try out features. ( under construction )
• Unix manual pages: Good starting points are the manual pages programs(8NEMO), which lists programs thematically, and index(1NEMO), which lists them alphabetically.
• programs (1NEMO).
• subroutines (3NEMO) .
• file formats (5NEMO) .
• administrativia (8NEMO) .
• local programs (lNEMO) .
• whatis manual database.
• experimental manual pages using inline documentation (feb 1995)

 Images and Snapshots

 Papers

• On Toolboxes and Telescopes , by Hut and Sussman, (1986) in: The Use of Supercomputers in Stellar Dynamics, Springer Verlag, p 193-198.
• An Environment for Experiments in Stellar Dynamics , by: Barnes, Hernquist, Hut and Teuben (1988) BAAS, 20, 706.
• A Laboratory for Gravitational Scattering Experiments by Hut, in: IAU colloq 109, pp. yyy.
• NEMO: A Stellar Dynamics Toolbox , by Teuben (1994, PASJ, xxx, yyy) overviews the current state of NEMO and introduces a proposal to use FITS as a vehicle to interchange and archive NBODY data (see also the QUESTIONNAIRE ). A gzip compressed postscript version of this paper is also available. The Sci.Data.Formats FAQ discussion may be relevant. The example program mentioned in PASJ94 writes an NBODY BINTABLE .
• ADASS (1994) paper . In preparation . A sample of the poster is available.
• GRAPE User Workshop
• other miscellaneous papers

Teuben, P.J. The Stellar Dynamics Toolbox NEMO, in: 
Astronomical Data Analysis Software and Systems IV, 
ed. R. Shaw, H.E. Payne and J.J.E. Hayes. (1995),
PASP Conf Series 77, p398.

 Installation - Anonymous FTP Source Code

• A bootstrap loader. This is a small C-shell script, that you can save anywhere on your local disk, and execute it to bootstrap NEMO from scratch. For example,
• chmod +x bootstrap
• bootstrap nemo=/usr/nemo
will pick up the tar file from Maryland, via anonymous ftp, and install a bootstrap version of NEMO, including a few small programs, in a directory called /usr/nemo and below. Note that the nemo= directory must be an absolute directory name. After this bootstrap installation you still have to tailor your site for things like graphics and dynamic object loading, but at least it gets you started.
• nemo_3.0.2.tar.gz (Wed May 16 18:28:16 EDT 2001) , a (normally gzip compressed) tar file, that contains the latest official release. Note this contains only the src, the so-called usr tree is only available upon request. NEMO now uses autoconf (configure) to prepare for the installation.
• A binary release of NEMO is also available within astromake, either download astromake and update via the astromake procedure, or download the binary from ftp://ftp.astro.umd.edu/pub/astro/. 
• Aarseth's nbody0. Although the source code is taken directly from NEMO, the Makefile contains targets to create standalone versions, both in FORTRAN-77 (the exact copy from Binney & Tremaine), and a C version. A very popular item to download, hence also available "standalone". See also Sverre's anonymous ftp.
• NEMO nbody fits proposal (This is now an outdated version, please refer to the 1994 PASJ paper
• tkrun, automatic GUI builder and frontend to run shell scripts or programs.
• optional software that can be installed to enrich NEMO (this is where you find links to PGPLOT etc.)
• The Linux for Astronomy CD-ROM contains a release of NEMO. Also check latest LFA comments.

If you download NEMO, we ask that you register the software, you can also optionally be notified of new releases. Send us an email!

 Other Software

• STARLAB ; Piet Hut, Steve McMillan and Jun Makino; you may find a local copy in $NEMO/usr/starlab .
• Josh Barnes' anonymous ftp directory tree contains updated versions of the treecode in C as well as fortran.

Within his Software Distribution, you can also find NEMO's cousin, ZENO. 
• TIPSY , an interactive X-windows based display package maintained by Neal Katz and Tom Quinn. Their HPCC project also maintains a software archive. In some NEMO versions you may find a TIPSY copy in $NEMO/usr/tipsy
• Nora , an interactive PGPLOT based analysis and display package built by Marc Balcells ( University of Groningen ). Is not publically available yet.
• John Salmon's home page, which pointers and references to parallel treecodes.
• DPMTA: an implementation of the Fast Multipole Algorithm. 
• GADGET, Volker Springer's and Naoki Yoshida's code for cosmological N- body/SPH simulations .
• MLAPM: Alexander Knebe's recursively refined Cartesian grid code.
• Walter Dehnen's new and Very Fast and Momentum-Conserving Tree Code.
• Anatoly Klypin's PM code. See also their ann.ftp. files.
• Hugh Couchman's home page. His adaptive P3M code (A3PM) is also available with a NEMO frontend in (pstart, prun). See also HYDRA below. Manual also available from astro-ph.
• The Hydra Consortium, Purveyors of fine N-body algorithms and simulation data, (or their UK mirror), provide public domain software and data for N-body hydrodynamical simulations.

New pages (Spring 2000) are now at: Hydra.
• VIRGO, a consortium of a number of N-Body related key projects, including a page with Software, and now Data.
• Douglas Heggie's homepage contains the material for A collaborative experiment on star cluster evolution
• Derek Richardson's archive contains the Box Tree Code as well as some other utilities.
• Galactic Collider, interactive Toomre-type galaxy collisions.
• The N-Body Site, Ben Moore's compilation (www.nbody.net a.k.a. http://star-www.dur.ac.uk:80/~moore/home.html)
• The Leiden Dynamics Group is also maintaining a software page.
• Hugo Martel has organized The Texas P3M Database, a database of COBE-Normalized CDM Simulations. Send email to database@galileo.as.utexas.edu if you want any of their 68 models. Their abbreviated paper is available on ASTRO-PH, and there are routines within NEMO to read the data.
• IASG : Kavan Ratnatunga's Galactic Structure Analysis package. It contains a modified version of the Bahcall-Soneira Galaxy model .
• GalactICS Software, developed by John Dubinski and Konrad Kuijken, for generating N-body realizations of axisymmetric galaxy models consisting of disk, bulge and halo. We keep a local copy within in NEMO in standard Fortran, so it also compiles under Linux.
• Chris Mihos' Models of Merging Galaxies.
• PEGASE a code to compute the spectral evolution of galaxies
• The Laboratory for Computational Astrophysics (LCA) maintains an archive of their codes and documentation .
• The Grand Challenge Cosmology Consortium (GC3) figures out the origin of large scale structure in the universe. They have a software archive , a data archive , and lot's of other interesting pages and links.
• The COSMICS (Cosmological Initial Conditions and Microwave Anisotropy Codes) (Bertschinger)
• AstroMD: A Multi Dimensional visualization and analysis toolkit for astrophysics.
• Tomasz Plewa's (Warsaw University Observatory) Smooth Particle Hydrodynamics list, part of the CFD codes list document, which is regularly posted to the sci.physics.computational.fluid-dynamics newsgroup .
• The IDL Astronomy User's Library has some routines to aid in plotting N-body systems.
• Meta-information
• N-Body Methods Resources by Mario Antonioletti.
• Amara Graps's N-body/Particle simulation methods home page. (This also includes a nice summary from a sci.math.num-analysis newsgroup discussion on N-body/Particle simulation numerical schemes.
• PC-Based programs
• GalaSimu is a PC-based simulation of interacting galaxies written by Christian Sturm.
• Galaxy software (also has a cool interactive web based tool)
• Astronomy Software from Zephyr. They have several programs with which N-body systems can be created and evolved.
• Animations (you probably need to have mpeg_play or mtv ) and other pretty pictures:
• A sample movie by Chris Mihos and Lars Hernquist show an encounter between two equal mass galaxy disks.
• The 1996 Saas-Fee lectures by Josh Barnes contain a number of pictures and animations.
• The Indiana University Astronomy Department also has some animations containing N-body simulations.
• The Cosmic Explorer has various animations on cosmological simulations from the UIUC group.
• The LCA Cosmology simulations. Check out the recent record breaker
• A sample of GC3 Cosmology simulations. Some overlap with the previous item. -- BAD --
• SPH Simulations from the Cardiff Star Formation group
• Jun Makino's homepage has some interesting animations.
• HPCC-UW Multimedia Show.
• Max Planck Institute fuer Astrophysik Galaxy Formation Group movies
• Matthias Steinmetz Galaxy Formation movies.
• Some Related Fields
• VMD: Molecular Dynamics Vizualisation.
• MDBNCH , A molecular dynamics benchmark.
• LASSPTools is a collection of Unix utilities for numerical analysis and graphics, built very much in the philosophy of NEMO, and may be useful in NEMO shell scripts.
• VMD a vizualization system for molecular dynamics.
• XGobi vizualization and selecting data from general multi-variate data.
• Some software information banks that may be relevant:
• ASDS
• AstroWeb

 N-Body Data Interchange Format

 Local Information

 Feedback

This page was last modified on 16-May-2001 by teuben@astro.umd.edu.