Other
Scientific paper
Jun 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987pazh...13..495v&link_type=abstract
Pis'ma v Astronomicheskii Zhurnal (ISSN 0320-0108), vol. 13, June 1987, p. 495-501. In Russian. In Russian. In Russian.
Other
Binary Stars, Cataclysmic Variables, Emission Spectra, Line Spectra, Stellar Spectra, White Dwarf Stars, Helium Ions, Hydrogen, Radial Velocity, Spectral Line Width, Stellar Spectrophotometry
Scientific paper
The results of emission spectrum observations of the polar CW 1103+254 are given. Variations have been detected in the radial velocity curves and equivalent widths of hydrogen and He II λ4686 lines in comparison with earlier observations by other authors. A systematic shift of the radial velocity curves, measured from the broad line component has been discovered. This indicates that there is some other periodic motion with the characteristic period ≡8 - 9 years in the system. The authors suggest the following causes of the motion: (1) precession of a magnetic white dwarf, (2) apsidal motion, (3) asynchronism of proper and orbital rotations of the magnetic white dwarf.
Borisov N. V.
Fabrika Sergei N.
Gnedin Yu N.
Natsvlishvili T. M.
Voikhanskaya N. F.
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