Hostname: page-component-586b7cd67f-dlnhk Total loading time: 0 Render date: 2024-11-20T06:22:13.341Z Has data issue: false hasContentIssue false
  • English
  • Français

Spiral Heating of Galactic Discs

Published online by Cambridge University Press:  03 August 2017

A. Jenkins  and
J. Binney
A. Jenkins
Affiliation:
Dept. Theoretical Physics 1 Keble Road Oxford OX1 3NP United Kingdom
J. Binney
Affiliation:
Dept. Theoretical Physics 1 Keble Road Oxford OX1 3NP United Kingdom

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 have investigated the combined effects of transient spiral waves and giant molecular clouds in heating stellar discs by solving the Fokker-Planck equation with a Monte Carlo simulation. By using obervations of the velocities of local stellar populations we are able to estimate the product of the mean surface density and the mass-weighted mean mass of the clouds and the RMS potential fluctuations associated with the spiral waves. The estimates show good agreement with observations of giant molecular clouds in our galaxy and HI observations in other spiral galaxies. We make predictions of the vertical and radial velocity distributions of two disc populations.

Type
XI- Galaxy Evolution
Information
Symposium - International Astronomical Union , Volume 146: Dynamics of Galaxies and their Molecular Cloud Distributions , 1991 , pp. 400 - 401
Copyright
Copyright © Kluwer 1991 

References

Binney, J. J. & Lacey, C. G. 1988. Mon. Not. Roy. Astron. Soc., 230, 597.Google Scholar
Jenkins, A. & Binney, J. 1990. Mon. Not. Roy. Astron. Soc., 245, 305.Google Scholar
Strömgren, B. 1987. In The Galaxy, p. 229, eds Gilmore, G. & Carswell, R., Reidel, Dordrecht.Google Scholar
Wielen, R. 1977. Astron. Astrophys., 60, 263.Google Scholar