Issue |
A&A
Volume 369, Number 3, April III 2001
|
|
---|---|---|
Page(s) | 1112 - 1121 | |
Section | Atomic, molecular, and nuclear data | |
DOI | https://doi.org/10.1051/0004-6361:20010166 | |
Published online | 15 April 2001 |
Spiral windows for escaping stars
1
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, jacques.henrard@fundp.ac.be
Received:
27
November
2000
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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