On the nature of the anomalously slow apsidal motion of DI Herculis

Details On the nature of the anomalously slow apsidal motion of DI Herculis On the nature of the anomalously slow apsidal motion of DI Herculis

Jul 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apj...375..314k&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 375, July 1, 1991, p. 314-320.

Computer Science

Numerical Analysis

14

Apsides, Companion Stars, Eclipsing Binary Stars, Stellar Motions, Stellar Orbits, Three Body Problem, Anomalies, Numerical Analysis, Orbit Perturbation, Stellar Models, Three Dimensional Models

Scientific paper

The elliptical three-body problem (a close binary and a nearby companion, three-dimensional case) is examined to elucidate the nature of anomalies in apsidal motion of some close binary systems. The numerical results are presented for once- and twice-averaged problems. It is shown that the significant discrepancy between the observed and the theoretical apsidal motion of DI Her (relativistic and classical effects) possibly results from the close binary orbit perturbations due to a third body.

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