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Star Density Distribution in Young and Old Globular Clusters of the Large Magellanic Cloud

Published online by Cambridge University Press:  14 August 2015

E. H. Geyer ,
U. Hopp ,
M. Kiehl  and
S. Witzigmann
E. H. Geyer
Affiliation:
Sternwarte der Universität Bonn - Observatorium Hoher List, D-5568 Daun, FRG
U. Hopp
Affiliation:
Wilhelm Foerster Sternwarte, 1000 Berlin
M. Kiehl
Affiliation:
Wilhelm Foerster Sternwarte, 1000 Berlin
S. Witzigmann
Affiliation:
Wilhelm Foerster Sternwarte, 1000 Berlin

Abstract

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The star density distribution in NGC 1818, 2004, 1806 and 1846, which are representative for the “blue” and “red” globular clusters of the LMC, have been determined from star counts on B- and V- ESO Schmidt telescope plates. These have limiting magnitudes of about 21, thus stars with absolute magnitudes of about Mv ~ +2 are reached. It was found that the two cluster types can be treated as “polytropic stargas spheres” according to the Schuster law with an index n ~ 2.75.

Type
August 29 Open And Globular Clusters
Information
Symposium - International Astronomical Union , Volume 85: Star Clusters , 1980 , pp. 341
Copyright
Copyright © Reidel 1980