DD Mon
Yamasaki1990 - Yamasaki1990B (Johnson B)
The solutions presented are slightly modified from Yamasaki et al. (1990). I used the Wilson-Devinney (1971) differential corrections routine on 140 V-normals from Yamasaki et al. (1990) and arrive at a solution very much the same as theirs. Yamasaki used his code in the 1990 paper and some of the equivalent light curve parameters were not given in the paper. As in the paper by Qian et al. (1997) the blue light curve does not fit well in the eclipse. What is needed is a reliable spectroscopic mass ratio, as the two groups arrived at totally different mass ratios.