TT Lyr
Giuricin1981 - Giuricin1981B (Johnson B)
Walter’s (1969) light curves show an obviously accentuated reflection effect around secondary eclipse. I had to modify Giuricin et al’s (1979) solutions in order to fit the secondary eclipse at all. The secondary’s temperature was reduced from 5250 K to 4900 K, the inclination was decreased from 84.0 to 83.7 degrees, and most significantly the reflection coefficient of the secondary star (assumed to be convective) was increased from 0.5 to 1.50. The light curves (both B & V) now fit the Walter (1969) light curves very well, indicating probably some kind of extra flux around the facing hemisphere of the secondary star. A modern radial velocity curve would help in the interpretation of this system!