Gaseous spiral arms produced by oval distortions in disc galaxies

Details Gaseous spiral arms produced by oval distortions in disc galaxies Gaseous spiral arms produced by oval distortions in disc galaxies

Mar 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982mnras.198..865s&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 198, Mar. 1982, p. 865-872.

Astronomy and Astrophysics

Astronomy

14

Cosmic Gases, Disk Galaxies, Galactic Structure, Gas Dynamics, Gravitational Fields, Astronomical Models, Flow Equations, Gas Density, Gas Flow, Interstellar Matter, Stellar Evolution

Scientific paper

The response in a non-self-gravitating gaseous disc to a weak oval distortion of an axisymmetric gravitational potential is studied through numerical experiments. The response in the gas is in the form of a well-defined spiral pattern, which is well correlated with the two outer resonances. The extent and orientation of a central distorted ring is found to depend on the innermost Lindblad resonance.

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