Local Phase Space - Shaped by Chaos?

Details Local Phase Space - Shaped by Chaos? Local Phase Space - Shaped by Chaos?

2008-01-23

arxiv.org/abs/0801.3564v1

Astronomy and Astrophysics

Astrophysics

8 pages, 3 figures, proceedings of the conference: "Chaos in Astronomy", Athens, September 2007, G. Contopoulos and P.A. Patsi

Scientific paper

We attempt to understand the state of the local phase space by comparing simulated 2-D velocity distributions to the distribution that is constructed for the solar neighbourhood, from measurements of stellar radial and transverse velocities. The joint perurbation of the central bar in the Galaxy and the spiral pattern is found to be a must, in order to produce successful models of the local phase space. The existence of chaos is found to be an important ingredient in the formation of the observed phase space structure.

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