Orbits of galactic globular clusters.
Abstract
New absolute proper motions of the two globular clusters NGC 4147 and NGC 6218 and a specific model of galactic mass distribution are used to integrate their orbits numerically. The resulting values of orbital parameters and their variation due to the uncertainty of the initial values are discussed. Furthermore, the deviations from the time average of the virial theorem are determined.
 Publication:

Astronomische Nachrichten
 Pub Date:
 March 1992
 DOI:
 10.1002/asna.2113130204
 Bibcode:
 1992AN....313...69O
 Keywords:

 Galactic Mass;
 Globular Clusters;
 Gravitational Fields;
 Interacting Galaxies;
 Orbital Elements;
 Virial Theorem;
 Mass Distribution;
 Milky Way Galaxy;
 Astrophysics