Publisher's Synopsis
In the two decades since the development of the first eclipsing-binary modelling code, new analytic techniques and the availability of powerful, sometimes dedicated computing facilities have made possible vastly improved determinations of fundamental and even transient stellar parameters. The scale of these developments, of course, raises questions about modelling tools, techniques and philosophies, such as: Who will maintain and upgrade the codes? Will the codes be open to improvement by outsiders, and if so, how? And, indeed, what should be the goals of a modelling program? Such questions had not been aired for a long time and, for this reason alone, deserved to be discussed in as general a forum as the community provides.;This volume contains material presented by Comission 42 (Close Binary Stars) duiring the International Astronomical Union's XXI General Assembly in Argentina, July 1991, and during IAU Colloquium 151, Cordoba, Argentina, August 1991.;The techniques discussed include simulations of stellar bright and dark spots, streams, partial and complete stellar disks, prominences, and other features characterizing active stars; modelling of polarization parameters; models that use radial velocity field variation across stellar disks; the weighted effects of brightness asymmetries; and models for translucent eclipsing agents such as stellar winds.