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3D Barred Model of the Milky Way Including Gas

Published online by Cambridge University Press:  12 April 2016

Roger Fux  and
Daniel Friedli
Roger Fux
Affiliation:
Geneva Observatory, CH-1290 Sauverny, Switzerland
Daniel Friedli
Affiliation:
Geneva Observatory, CH-1290 Sauverny, Switzerland

Abstract

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We present a 3D N-body simulation of the Milky Way including 4 × 105 star- and dark-like particles and 2 × 104 gas particles, initially distributed according to an axisymmetric, observationally constrained, mass model. The whole system is self-gravitating and the gas hydrodynamics is solved using the SPH method. The simulation leads to the spontaneous formation of a central bar that strongly affects the gas dynamics. We compute (l – V) diagrams for both the gaseous and the stellar particles as a function of the angle of the bar with respect to the observer and compare the results for the gas with HI and CO observations.

Type
Part IX. The Galaxy as a Barred Spiral
Information
International Astronomical Union Colloquium , Volume 157: Barred Galaxies , 1996 , pp. 529 - 535
Copyright
Copyright © Astronomical Society of the Pacific 1996

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