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Orbits of galactic globular clusters
Author(s) -
Odenkirchen M.,
Brosche P.
Publication year - 1992
Publication title -
astronomische nachrichten
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.394
H-Index - 63
eISSN - 1521-3994
pISSN - 0004-6337
DOI - 10.1002/asna.2113130204
Subject(s) - globular cluster , physics , virial theorem , astrophysics , virial mass , variation (astronomy) , galaxy , orbital elements , distribution (mathematics) , orbit (dynamics) , mathematics , mathematical analysis , engineering , aerospace engineering
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.