Hostname: page-component-78c5997874-4rdpn Total loading time: 0 Render date: 2024-11-02T21:33:02.176Z Has data issue: false hasContentIssue false
  • English
  • Français

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

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

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

References

Benz, W. 1990, in Numerical Modeling of Nonradial Stellar Pulsation: Problems and Prospects, NATO ASI Series C, Buchler, J.R., Dordrecht: Kluwer, 269 Google Scholar
Binney, J., Gerhard, O.E., Stark, A.A., Bally, J., & Uchida, K.I. 1991, MNRAS, 252, 210 CrossRefGoogle Scholar
Blitz, L. & Spergel, D.N. 1991, ApJ, 379, 631 Google Scholar
Dame, T.M. et al. 1987, ApJ, 322, 706 Google Scholar
Fux, R., Martinet, L., & Pfenniger, D. 1995, in Unsolved Problems of the Milky Way, IAU symp. 169, Blitz, L., in pressGoogle Scholar
Hartman, D. & Burton, W.B. 1995, in Atlas of Galactic Neutral Hydrogen, Cambridge: Cambridge University Press, in pressGoogle Scholar
Jenkins, A. & Binney, J. 1994, MNRAS, 270, 703 CrossRefGoogle Scholar
Martinet, L. 1995, Fund. Cosmic Physics, 15, 341 Google Scholar
Mulder, W.A. & Liem, B.T. 1986, A&A, 157, 148 Google Scholar
Pfenniger, D. & Friedli, D. 1993, A&A, 270, 561 Google Scholar
Wada, K., Taniguchi, Y., Habe, A., & Hasegawa, T. 1994, ApJ, 437, L123 CrossRefGoogle Scholar
Weinberg, M.D. 1992, ApJ, 384, 81 CrossRefGoogle Scholar