Periodic orbits and gas flow in barred spirals

Details Periodic orbits and gas flow in barred spirals Periodic orbits and gas flow in barred spirals

Oct 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982mnras.201..303v&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 201, Oct. 1982, p. 303-316.

Astronomy and Astrophysics

Astronomy

64

Astronomical Models, Barred Galaxies, Gas Dynamics, Orbits, Angular Velocity, Gas Flow, Gravitational Fields, Hydrodynamics, Mass Distribution

Scientific paper

A Henyey method for finding families of periodic orbits has been applied to the bar potential used by Sanders and Tubbs (1980) in two-dimensional hydrodynamical calculations. Families of periodic orbits have been found in the limits of weak and strong bars and compared qualitatively to the results of Contopoulos and Papayannopoulos (1980). Orbits in the strong bar potential are compared to the gas flow pattern determined in the earlier hydrodynamical calculations. It is shown that the pattern in which periodic orbits crowd can account for the linear off-set shocks found in the gas dynamical calculations provided that the bar is strong, that the mass distribution is centrally condensed and that the bar figure is rapidly tumbling.

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