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The Mass Distribution of the Milky Way Deduced from Globular Cluster Dynamics

Published online by Cambridge University Press:  25 May 2016

B. Dauphole
Affiliation:
Observatoire de Bordeaux, URA 352, CNRS/INSU, B.P. 89, F-33270 Floirac, France
J. Colin
Affiliation:
Observatoire de Bordeaux, URA 352, CNRS/INSU, B.P. 89, F-33270 Floirac, France
M. Geffert
Affiliation:
Sternwarte der Universität Bonn, Auf dem Hügel 71, D-53121 Bonn, Federal Republic of Germany
M. Odenkirchen
Affiliation:
Sternwarte der Universität Bonn, Auf dem Hügel 71, D-53121 Bonn, Federal Republic of Germany
H.-J. Tucholke
Affiliation:
Sternwarte der Universität Bonn, Auf dem Hügel 71, D-53121 Bonn, Federal Republic of Germany

Abstract

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We present here a new analytical Galactic potential. We used the constraint of galactic globular cluster dynamics compared to their spatial distribution. This was done with the help of the globular clusters' proper motions. The result for the clusters dynamics show a better agreement between orbital parameters and statistical distribution of the studied globular clusters than in previous published potentials. The globular cluster dynamics constrain the mass distribution on a large scale, until 40 kpc from the centre. In this model, the total mass for the Milky Way is 7.9 1011 M.

Type
Chapter 8: How do we put it together?
Copyright
Copyright © Kluwer 1996 

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