Volume 369, Number 3, April III 2001
|Page(s)||1112 - 1121|
|Section||Atomic, molecular, and nuclear data|
|Published online||15 April 2001|
Spiral windows for escaping stars
Depto. de Matemática A., University of Alicante, PO Box 99, 03080, Alicante, Spain
2 Dépt. de Mathématique, University of Namur, 8 rempart de la Vierge, 5000, Namur, Belgium
Corresponding author: J. Henrard, firstname.lastname@example.org
Accepted: 23 January 2001
The "escape windows"through which stars may escape from a galaxy are investigated by means of Poincaré sections of a simplified axi-symmetric model of the potential. The spiral shape of the windows are analyzed in details by constructing a normal form in the vicinity of an unstable periodic orbit.
Key words: celestial mechanics / galaxies: clusters: general / galaxies: general
© ESO, 2001
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