On the motion of the apsidal line in interacting binary systems

Details On the motion of the apsidal line in interacting binary systems On the motion of the apsidal line in interacting binary systems

Nov 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980mnras.193..603p&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 193, Nov. 1980, p. 603-615.

Astronomy and Astrophysics

Astronomy

33

Apsides, Binary Stars, Stellar Motions, X Ray Stars, Eccentric Orbits, Equations Of Motion, Stellar Rotation, Synchronism

Scientific paper

The effect of resonance between stellar oscillations and the orbital motion on the standard calculation of the rate of advance of the line of apsides in an eccentric binary system is investigated. The results are applied to the X-ray binary system 4U0900-40 for which the pulsing X-ray star enables accurate measurement of orbital parameters. It is shown that the standard formula for apsidal advance can be significantly in error, even to the extent of predicting the wrong direction of the apsidal precession.

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