SPECTRAL-LINE BROADENING FUNCTIONS OF W-UMA-TYPE BINARIES .3. W-UMA

High resolution spectra of the prototype of the class of contact binar y stars obtained in 1988 and 1989 have been processed using the broade ning function (BF) formalism. Our previous description of this formali sm is supplemented here by a prescription for BF error determination. Our mass ratio, q = 0.49 +/- 0.01, confirms McLean's [MNRAS, 195, 931 (1981)] result but we find slightly larger values for the component ma sses. However, this discrepancy is at the same level as the difference between our 1988 and 1989 results. Absolute parameters of the primary component, corrected for the energy transfer, place it within the mai n-sequence band on the mass-luminosity relation.