Abstract

An extensively revised version of the Binary Maker code has been written in the C language for MSDOS machines with VGA monitors which allows users to construct 3D Roche geometry visualizations of nearly any circular orbit close binary. The program revolves the system and simultaneously creates accurate light and radial velocity curves and plots them on the screen as the user watches the stars revolve. There is also a mode which allows synthetic line profiles to be generated. The user interactive nature of this program greatly facilitates preliminary light curve modeling, especially when modeling starspot regions, and the program also has tremendous potential as a teaching tool in light curve synthesis. The program is described in some detail and several examples are given to illustrate its use.

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