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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.

Information

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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