Orbital solutions for three RS CVn systems: WY Cnc, SV Cam and XY UMa

Near IR spectroscopic observations of WY Cnc, SV Cam and XY UMa binary syst ems of RS CVn type are presented. Systemic velocity and radial velocity sem i-amplitudes of primary components in each system are derived using cross-c orrelation between cleaned spectra and G2 noiseless templates. Secondary se mi amplitudes are determined from the primary subtracted spectra using the cross-correlation function maps and direct cross-correlation. Masses of the stars are derived and system properties briefly discussed. Primary compone nts in all three systems seem to be more massive than was earlier deduced f rom their spectral classification. Regarding stellar masses, SV Cam should be classified as F5V+K0V pair. Observations of XY UMa fully confirm results obtained previously using a method for detecting faint secondaries in the low signal-to-noise spectra.