Table 1
Comparison of the location of the vertical resonances in the two models along the major axis of the bar.
| Vertical resonances | E* | E* |  |
 |
|---|---|---|---|---|
| (N-body) | (Ferrers) | (N-body) | (Ferrers) | |
| 2:1 (a) | 0.921 | 0.334 | 0.694 | 0.125 |
| 2:1 (b) | 0.952 | 0.370 | 0.745 | 0.146 |
| 3:1 (a) | 1.003 | 0.515 | 0.912 | 0.254 |
| 3:1 (b) | – | 0.558 | – | 0.287 |
| 4:1 (a) | – | 0.866 | – | 0.597 |
| 4:1 (b) | – | 0.895 | – | 0.633 |
Notes. Each row successively gives the name of the vertical resonance, the relative energy E* (see text) of each resonance for the N-body model and the Ferrers bar respectively and finally the maximum length of the x1 orbits at the resonance (their apocentra), normalized over the L1 radius, for the two models.
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