MODELLING THE INNER PARTS OF THE MILKY WAY USING INVARIANT MANIFOLDS

In a series of papers we proposed a theory to explain the formation and properties of rings and spirals in barred galaxies. The building blocks of these structures are orbits trapped by the invariant manifolds of the periodic orbits around the unstable Lagrangian points located near the ends of the...

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Bibliographic Details
Authors: M. Romero-Gomez, E. Athanassoula, T. Antoja, O. Valenzuela, F. Figueras, B. Pichardo
Format: article
Status:Published version
Publication Date:2011
Country:México
Institution:Universidad Nacional Autónoma de México
Repository:Redalyc-UNAM
OAI Identifier:oai:redalyc.org:57121297039
Online Access:https://www.redalyc.org/articulo.oa?id=57121297039
Access Level:Open access
Keyword:Física, Astronomía y Matemáticas
Galaxy
Galaxies
galaxies
structure
kinematics and dynamics
Description
Summary:In a series of papers we proposed a theory to explain the formation and properties of rings and spirals in barred galaxies. The building blocks of these structures are orbits trapped by the invariant manifolds of the periodic orbits around the unstable Lagrangian points located near the ends of the bar. Here, we will first present a comparison of the morphology of observed and theoretical spirals and rings. We will describe the mechanism used to obtain these features and then we will compare the morphology and kinematics of the rings and spirals obtained with the ones from observations. Finally, we will introduce the work done to model the spiral arms of the Milky Way using this new approach.