The STARS Home Page

The STARS code was originally developed in the 1970s by Peter Eggleton. Over the years, the code has been gradually updated to its current form. These pages are intended to act as a user guide for the current version of the code.

General User Guide

How the STARS code works
The STARS data file
Input and output
Stellar recipes


A brief tutorial for the code can be found here. It contains examples of how to do some basic evolution with the code.

The STARS code is available for download from the following password-protected link. If you desire access to it, please e-mail us at the address below, or for instant access use our password robot:
Access to the STARS code.

For a more detailed view of the physics and principles of the code, see the following references:

Eggleton, P.P. (1971) MNRAS 151, 351 -
This deals with automatic positioning of mesh points in the non-Lagrangian mesh which is used.
Eggleton, P.P. (1972) MNRAS 156, 361 -
This deals with the treatment of convective and semi-convective mixing.
Eggleton, P.P., Faulkner, J. and Flannery, B.P. (1973) A&A 23, 325 -
This deals with the equation of state.
Eggleton, P.P. (1973) MNRAS 163, 279 -
Applies the code to a 4 solar mass star, from main sequence to carbon ignition.
Han, Z., Podsiadlowski, P., & Eggleton, P.P. (1994) MNRAS 270, 121 -
A recent brief update on the procedures used.
Pols, O., Tout, C.A., Eggleton, P.P., & Han, Z. (1995) MNRAS 274, 964 -
An update on the equation of state, opacity and nuclear reaction network.
Stancliffe R.J. & Eldridge J.J., (2009), MNRAS, 396, 1699 -
Describes the new version of the code which can simultaneously evolve binaries and their orbits, as well as detailing updates to the code.

A reference to one or more of these (as appropriate) would be appreciated if you find the code useful.

People involved with STARS
Peter Eggleton
Christopher Tout
Onno Pols
John Eldridge
Richard Stancliffe
Ross Church

For readers of "A more detailed look at the Opacities for Enriched Carbon and Oxygen Mixtures".
2004, MNRAS, 348, 201, astro-ph/0310255.
who wish to obtain the code, tables and details of our new tables.
Email: for details or click here for the tables.

Evolutionary Tracks
Evolutionary tracks calculated using the STARS code are available here.

Interested in compiler/platform run times?

Last modified: Tue Jan 31 10:10:41 2012
by R.J. Stancliffe