Recent Improvements to a Version of the Wilson‐Devinney Program

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Abstract
We summarize recent improvements to a version of the Wilson-Devinney program that is widely used for the analysis of eclipsing binary data, and we describe the new WD95 program. WD95 contains the University of Calgary version of the Wilson-Devinney code, which supports the use of the Kurucz atmosphere models; it provides options to use multiple epoch data and multiwavelength synoptic passbands. The WD95 program contains an improved input/output interface, simplex algorithms for initial searches and tests, and versions of Wilson-Devinney DC and LC programs and options to switch to automatic differential corrections or a damped least-squares solver using normal equations that are modified as per the Levenberg-Marquardt scheme. This paper describes some tests of the damped least-squares solver with simulated data.

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