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ICCUB SEMINAR – Self-consistent models of our Galaxy in the Gaia era

ICCUB SEMINAR - Self-consistent models of our Galaxy in the Gaia era
Start
10-27-2017
End
10-27-2017
Speaker
Eugene Vasiliev
Affiliation
Rudolf Peierls Centre for Theoretical Physics, Oxford, UK
Host
ICCUB - IEEC
Place
DAM seminar room (724), 7th floor

ABSTRACT


I present an approach for constructing self-consistent dynamical models of our Galaxy based on distribution functions (DF) in the action space. The parameters of the DF are adjusted to match observed rotation curve and distribution of stars in the Solar neighborhood, and the gravitational potential is computed from the DF iteratively. With a dozen or so parameters, we have a complete description of an axisymmetric approximation of the Galaxy in dynamical equilibrium, which may be used to construct N-body models, serve as the basis for perturbation theory for non-axisymmetric modes, and much more.
Contact email
mromero(a)fqa.ub.edu