Astronomy and Astrophysics – Astrophysics
Scientific paper
Jul 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983apj...270...51l&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 270, July 1, 1983, p. 51-70.
Astronomy and Astrophysics
Astrophysics
47
Galactic Structure, Interstellar Gas, Stellar Motions, Active Galaxies, Elliptical Orbits, Galactic Rotation, Galerkin Method, Gas Dynamics, Hamiltonian Functions, Orbital Mechanics, Orbital Resonances (Celestial Mechanics)
Scientific paper
A variety of analytic means for examining the existence and stability of orbit families in triaxial potentials which approximate the potential fields of triaxial galaxies are presented. A particular class of potentials which possess three exact integrals of motion is analyzed. This potential is chosen because of its resemblance to the potential used by Schwarzschild (1979) to produce an equilibrium model of a triaxial stellar figure. The properties of a potential based on an expansion about the core region is explored, including the potential and the resulting integrals of motion for the 1-1-1 resonance and the stability of periodic orbits. The Galerkin method is used to solve for the resonant orbits to first order. New features of the central regions of galaxies are discussed, particularly the possibility of the formation of stable equilibrium tilted disks, the structure of the Spindle galaxy, and implications for enhanced fueling of gas into the central engine of active galaxies.
Lake George
Norman Colin
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