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2014MNRAS.443.2579E - Mon. Not. R. Astron. Soc., 443, 2579-2589 (2014/September-3)
Fractal basins of escape and the formation of spiral arms in a galactic potential with a bar.
ERNST A. and PETERS T.
Abstract (from CDS):
We investigate the dynamics in the close vicinity of and within the critical area in a 2D effective galactic potential with a bar of Zotos. We have calculated Poincaré surfaces of section and the basins of escape. In both the Poincaré surfaces of section and the basins of escape, we find numerical evidence for the existence of a separatrix which hinders orbits from escaping out of the bar region. We present numerical evidence for the similarity between spiral arms of barred spiral galaxies and tidal tails of star clusters.
Abstract Copyright: © 2014 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2014)
Journal keyword(s): chaos - galaxies: evolution - galaxies: kinematics and dynamics
Simbad objects: 1
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