The Synthesis of Close-Binary Light Curves. II. Double Distortion and the Systems as Eridani, Lambda Tauri, and RS Vulpeculae
The theoretical derivation of close-binary light curves, which include the reflection effect and distortion of the secondary star, is extended to include the distortion of the primary star. Physical data, relative radii, effective temperatures, and mass ratios are derived for the eclipsing systems AS Eri, X Tau, and RS Vul. The first system has a secondary close to its Roche limit, the second shows strong distortion effects in the primary, and the third has a very strong reflection effect; all three illustrate the versatility of the program.