Fourier Analysis of the Light Curves of Eclipsing Variables, XIII

New expressions for the fractional loss of light α{_/l ⁰} have been derived in the simple forms of rapidly converging expansions to the series of Chebyshev polynomials, Jacobi polynomials, and Kopal'sJ-integrals. In these expansions, which are a supplement to those given by Kopal (1977b), variablesk andh occur in different products that simplify the numerical computation. The treatment follows the new definition of α{_/l ⁰} which has been recently developed by Kopal (1977a).