REVISED PHOTOMETRIC ELEMENTS OF THE ECLIPSING SYSTEMS BS DRACONIS AND CD TAURI

The need for homogeneous and unbiased solutions of the light curves of eclipsing binaries has been widely assessed by many recent works (cfr, for example, the papers by Cester and colleagues during the years 1977-1980). In particular, the Russell and Merrill (1952) rectifiable method seems now to be only a crude approach to the problem, contrary to the so-called 'direct' method of solution, among which the more widely used are the ones by Wood (1971) and by Wilson and Devinney (1971). Within our project of extensive use of the Wilson and Devinney method (hereafter WD) we have solved the light curves of two systems, CD Tau and BS Dra, known from the literature to be detached systems.