Peter Yoachim

In Yoachim et al 2009, we used OGLE data to construct template light curves of Cepheid variables. This includes short period Cepheids and stars pulsating in the first overtone mode. This IDL code allows one to fit a sparsly observed Cepheid light curve very accuratly. If you have photometry of a Cepheid in V and I, this code can fit average magnitudes, period, and phase even if the data is noisy and/or not optimally covered in phase.

Download Cepheid period-magnitude fitting IDL code.

Available by request, Cepheid templates in B, V, and I.

This tar ball includes my personal stash of IDL code including an implementation of the Numerical Recipes two-dimensional Kolmogorov-Smirnov test (KS-test). IDL tar ball.

Here is an IDL generated page with the descriptions for all the routines.

For my thesis, I made extensive use of the MPFIT curve fitting software to fit structural features to images of nearby galaxies. I have made a tar-ball of IDL code that includes examples of how to implement custom fitting functions and weighting schemes here.