Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987apj...313..152a&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 313, Feb. 1, 1987, p. 152-163.
Astronomy and Astrophysics
Astronomy
5
Active Galactic Nuclei, Black Holes (Astronomy), Kinetic Heating, Stellar Orbits, Stellar Temperature, Orbit Decay, Pressure Effects, Radiative Heat Transfer, Stellar Interiors, Tides
Scientific paper
A theoretical model is developed for the fueling of active galactic nuclei by the capture of stars by massive black holes. Although the stars may be outside the Roche lobe, a small accretion flow would be sufficient to move stars to lower orbits. Disruption would occur from heating during multiple passages through pericenter on timescales shorter than those of the transport of energy from the stellar interior. The calculations cover the orbital evolution in terms of two-body relaxation, orbital decay and dissipative processes. Attention is also given to ablation and heating of stars due to encounters with the accretion torus, X-ray heating and tidal heating, and permit describing conditions under which a star is disrupted.
Allen Anthony J.
Hughes Philip A.
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