Signatures of the resonances of a large Galactic bar in local velocity space
Signatures of the resonances of a large Galactic bar in local velocity space
The second data release of the Gaia mission has revealed a very rich structure in local velocity space. In terms of in-plane motions, this rich structure is also seen as multiple ridges in the actions of the axisymmetric background potential of the Galaxy. These ridges are probably related to a …