Orbits in weak and strong bars

Details Orbits in weak and strong bars Orbits in weak and strong bars

Dec 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980a%26a....92...33c&link_type=abstract

Astronomy and Astrophysics, vol. 92, no. 1-2, Dec. 1980, p. 33-46.

Astronomy and Astrophysics

Astrophysics

203

Barred Galaxies, Celestial Mechanics, Orbital Mechanics, Stellar Models, Stellar Rotation, Circular Orbits, Galactic Structure, Lagrangian Equilibrium Points, Stellar Motions

Scientific paper

The paper studies the plane orbits in simple bar models embedded in an axisymmetric background when the bar density is about 1% (weak), 10% (intermediate) or 100% (strong) of the axisymmetric density. Most orbits follow the stable periodic orbits. The basic families of periodic orbits are described. In weak bars with two inner Lindblad resonances there is a family of stable orbits extending from the center up to the outer Lindblad resonance. This family contains the long period orbits near corotation. Other stable families appear between the inner Lindblad resonances, outside the outer Lindblad resonance, around corotation (short period orbits), and around the center (retrograde). Some families become unstable or disappear in strong bars. A comparison is made with cases having one or no inner Lindblad resonance

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