Orbital Solutions for Three RS CVn Systems: WY Cnc, SV Cam and XY UMa

Details Orbital Solutions for Three RS CVn Systems: WY Cnc, SV Cam and XY UMa Orbital Solutions for Three RS CVn Systems: WY Cnc, SV Cam and XY UMa

Dec 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998aca....48..711p&link_type=abstract

Acta Astronomica, v.48, pp.711-727, (1998).

Astronomy and Astrophysics

Astronomy

24

Binaries: Spectroscopic, Techniques: Spectroscopic, Stars: Individual: Wy Cnc: Sv Cam: Xy Uma

Scientific paper

Near IR spectroscopic observations of WY Cnc, SV Cam and XY UMa binary systems of RSCVn type are presented. Systemic velocity and radial velocity semi-amplitudes of primary components in each system are derived using cross-correlation between cleaned spectra and G2 noiseless templates. Secondary semi 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 components in all three systems seem to be more massive than was earlier deduced from their spectral classification. Regarding stellar masses, SVCam 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.

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