GALAXY N-body simulation package

©2014 J. A. Sellwood, formerly Rutgers University, now Steward Observatory

A simulation of a disk galaxy
that used 200 million particles.
Sellwood & Carlberg (2014)

NEWS: Version 15, in which all use of commercial software (i.e. NAG) has been eliminated, is now available. The default version downloaded from here is now version 15.40

A few known problems and a history of previous versions can be found here.

Please enter your email address, so that you can be notified of important updates, and then click on "download" to obtain a copy of version 15.34 of the software.

E-mail address:


The file "galaxy.tgz" will appear in your Download directory. For news of updates and known bugs , click here.


A comprehensive manual (pdf) is available here that explains how to install and use the code.


Rutgers Astrophysics