| Issue |
EAS Publications Series
Volume 67-68, 2014
The Milky Way Unravelled by Gaia: GREAT Science from the Gaia Data Releases
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|
|---|---|---|
| Page(s) | 187 - 190 | |
| Section | The Origin and History of the Milky Way | |
| DOI | https://doi.org/10.1051/eas/1567033 | |
| Published online | 17 July 2015 | |
N.A. Walton, F. Figueras, L. Balaguer-Núñez and C. Soubiran (eds)
EAS Publications Series, 67–68 (2014) 187-190
Resonant Clumping and Substructure in Galactic Discs
1 Kavli Institute for Astronomy & Astrophysics, Peking University, Beijing, China
2 Shanghai Astronomical Observatories, Shanghai, China
3 Institute of Astronomy, Cambridge, UK
We describe a new method for analysing N-body simulations. The method makes a blind search for resonant orbits by making use of the fact that resonant orbits will return to some previously occupied region of phase space. An application of this method is made to the N-body simulation of Shen et al. (2010). The simulation is host to a strong and persistent central bar that drives resonances and angular momentum exchange, even in the outer parts of the disc. We deconstruct the barred disc into it's constituent resonant orbit families. We then study the contribution of each orbit family to the kinematic landscape around the disc.
© EAS, EDP Sciences, 2015