Stellar response to growing oval distortions in disk galaxies

Journal Article · Wed Apr 01 04:00:00 EST 1981 · Astrophys. J.; (United States)

DOI:https://doi.org/10.1086/158783· OSTI ID:6316202

Thielheim, K O; Wolff, H

The time-dependence response of an ensemble of noninteracting test particles to a growing oval distortion in a model disk galaxy is calculated numerically. For the adopted model, the response inside corotation is found to be barlike and in phase with the perturbation, whereas outside corotation a two-armed, trailing spiral pattern is observed during the growth of the perturbation. Long periods of growth of the oval distortion that are in agreement with some recent N-body calculations lead to spiral patterns that persist for many galactic rotation periods.

• Research Organization: Institut fuer Reine und Angewandte Kernphysik der Universitaet Kiel, Federal Republic of Germany
• OSTI ID: 6316202
• Journal Information: Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 245:1; ISSN ASJOA
• Country of Publication: United States
• Language: English

Related Subjects

640105* -- Astrophysics & Cosmology-- Galaxies
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
DIFFERENTIAL EQUATIONS
DISTRIBUTION
DISTURBANCES
EQUATIONS
EQUATIONS OF MOTION
GALACTIC EVOLUTION
GALAXIES
GRAVITATION
MANY-BODY PROBLEM
MATHEMATICAL MODELS
MOTION
NUMERICAL SOLUTION
ORBITS
PARTIAL DIFFERENTIAL EQUATIONS
ROTATION
SPATIAL DISTRIBUTION