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Populating Stellar Orbits Inside a Rotating, Gaseous Bar

Eric Barnes·Joel E. Tohline
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Abstract

In an effort to better understand the formation and evolution of barred galaxies, we have examined the properties of equatorial orbits in the effective potential of one model of a rapidly rotating, steady-state gas-dynamical bar that has been constructed via a self-consistent hydrodynamical simulation. Using a ``Restriction Hypothesis'' to determine initial conditions, we find that a significant fraction of orbits in this potential are quasi-ergodic and that regular orbits have a ``bowtie'' shape in contrast to the more typical x1 orbits. This bowtie orbit should give a boxy-peanut shape to such systems.

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Eric Barnes, Joel E. Tohline. 2001-01-22. Populating Stellar Orbits Inside a Rotating, Gaseous Bar. https://doi.org/10.1086/320073

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