Tails and bridges in the parabolic restricted three-body problem
Barrabés Vera, Esther (Universitat de Girona. Escola Politècnica Superior)
Cors Iglesias, Josep Maria (Universitat Politècnica de Catalunya. Escola Politècnica Superior d'Enginyeria de Manresa)
Garcia-Taberner, Laura (Universitat de Girona. Escola Politècnica Superior)
Ollé, Mercè (Universitat Politècnica de Catalunya. Escola Tècnica Superior d'Enginyeria Industrial de Barcelona)

Date:	2017
Abstract:	After a close encounter of two galaxies, bridges and tails can be seen between or around them. A bridge would be a spiral arm between a galaxy and its companion, whereas a tail would correspond to a long and curving set of debris escaping from the galaxy. The goal of this paper is to present a mechanism, applying techniques of dynamical systems theory, that explains the formation of tails and bridges between galaxies in a simple model, the so-called parabolic restricted three-body problem, i. e. we study the motion of a particle under the gravitational influence of two primaries describing parabolic orbits. The equilibrium points and the final evolutions in this problem are recalled,and we showthat the invariant manifolds of the collinear equilibrium points and the ones of the collision manifold explain the formation of bridges and tails. Massive numerical simulations are carried out and their application to recover previous results are also analysed.
Grants:	Ministerio de Economía y Competitividad MTM2013-41168-P Ministerio de Economía y Competitividad MTM2016-80117-P Agència de Gestió d'Ajuts Universitaris i de Recerca 2014/SGR-1145 Ministerio de Economía y Competitividad MTM2013-40998-P Ministerio de Economía y Competitividad MTM2016-77278-P Agència de Gestió d'Ajuts Universitaris i de Recerca 2014/SGR-568 Ministerio de Economía y Competitividad MTM2015-65715-P Agència de Gestió d'Ajuts Universitaris i de Recerca 2014/SGR-00504
Rights:	Tots els drets reservats.
Language:	Anglès
Document:	Article ; recerca ; Versió acceptada per publicar
Published in:	Monthly Notices of the Royal Astronomical Society, Vol. 472, Issue 3 (December 2017) , p. 2554-2568, ISSN 1365-2966

DOI: 10.1093/mnras/stx1990

Postprint 13 p, 6.1 MB

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