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Cooperation of orbital streams in disc galaxies
Journal article

Cooperation of orbital streams in disc galaxies

Abstract

An orbit is said to cooperate with a potential well if it tends to deepen it by aligning with it. We derive analytical formulae that give the response of resonant orbits to non-axisymmetric perturbations. This makes it possible to quantify the level of cooperation in a given galaxy model. The qualitative response of orbits can be characterized by the sign of what we call the cooperation parameter. We discuss the relevance of our results for theories of the formation and maintenance of bars and lopsidedness.

Authors

Earn DJD; Lynden-Bell D

Journal

Monthly Notices of the Royal Astronomical Society, Vol. 278, No. 2, pp. 395–405

Publisher

Oxford University Press (OUP)

Publication Date

January 11, 1996

DOI

10.1093/mnras/278.2.395

ISSN

0035-8711

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