ExoFit is a freely available software package for estimating orbital parameters of extra-solar planets. ExoFit can search for either one or two planets and employs a Bayesian Markov Chain Monte Carlo (MCMC) method to fit a Keplerian radial velocity curve onto the radial velocity data.
| Best fit Keplerian orbital solution for HD 159868 | Posterior distribution of orbital parameters and other useful astronomical quantities for HD 159868 |
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More details about ExoFit are given in Balan & Lahav (2008). astro-ph link
Source code: ExoFit.v2.tar.gz (~300Kb)
Download ExoFit User's Guide
Unpack the downloaded tar ball using:
tar xvzf ExoFit.v2.tar.gz
This will create the directory ExoFit.v2, with subdirectories include , src , doc and data.
The ExoFit user guide can also be found in the doc directory.
The data directory contains sample data.
The source code can be found in the src directory. To compile, edit the Makefile , as described in the ExoFit users guide, and use the command make from this directory. The two executables exofit and plotmaker can then be moved to your ~/bin directory (or any other directory in your PATH) so you can access the programs easily from the command line.
| Date | Version | Comments | Link |
| 20-05-2008 | 1.0 | Can search for either 1 or 2 planets | ExoFit.v2.tar.gz |
| 10-05-2008 | 2.0 | Single planet search | ExoFit.v1.tar.gz |
Last modified: May 20, 2008