Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984azh....61.1098b&link_type=abstract
(Astronomicheskii Zhurnal, vol. 61, Nov.-Dec. 1984, p. 1098-1107) Soviet Astronomy (ISSN 0038-5301), vol. 28, Nov.-Dec. 1984, p.
Astronomy and Astrophysics
Astronomy
4
Binary Stars, Celestial Mechanics, Star Distribution, Stellar Evolution, Stellar Orbits, Supermassive Stars, Black Holes (Astronomy), Galactic Nuclei, Orbit Perturbation, Orbital Elements, Secular Variations, Stellar Motions
Scientific paper
The orbital evolution of a massive binary system interacting with a background field of single stars whose phase density is homogeneous in configuration space is considered. The velocity distribution is assumed isotropic up to some limiting value, and a typical field star is regarded as having a velocity much higher than the orbital speed of the pair components. An expression is derived for the transfer of energy from the binary to the field stars. The time evolution of the orbit parameters a, e is established, and the evolution rate is estimated for Kardashev's (1983) model galactic nucleus containing a central black-hole binary. On the above assumptions the components should become twice as close together within only a few tens of millennia, although the picture may change fundamentally if the nucleus is rotating.
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