Abstract
A grid of parametric models of hypothetical metal-poor W Ursae Majoris type binaries are evolved to typical globular cluster ages. Constraints on the initial masses and mass ratios of such binaries are also discussed. It is shown that gravitational radiation profoundly affects the distribution of observable parameters of present-day systems, which consequently have very extreme mass ratios, q< or approx. =0.18, small eclipse depths, ..delta..m/sub ..nu../< or approx. =0.4, and short periods, P< or approx. =0/sup d/.33. No severe constraints can yet be put on the frequency of such objects in globular clusters.
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