The study of globular clusters using the principal component method

Details The study of globular clusters using the principal component method The study of globular clusters using the principal component method

Aug 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986azh....63..659e&link_type=abstract

Astronomicheskii Zhurnal (ISSN 0004-6299), vol. 63, July-Aug. 1986, p. 659-665. In Russian.

Astronomy and Astrophysics

Astronomy

2

Globular Clusters, Metallicity, Principal Components Analysis, Star Distribution, Distance

Scientific paper

The variety of globular cluster properties is shown to be determined mainly by two factors. The first factor is associated with metallicity and/or the distance from the Galaxy center, while the second is associated with "richness" and/or concentration of clusters. Most observational parameters are determined by preferential action of one of these factors, while the geometrical dimensions of the cluster are dependent on both factors simultaneously. Values of new generalized characteristics corresponding to these factors (i.e., principal components) for 97 globular clusters of the Galaxy are determined. On the plane of the two first principal components the clusters constitute a continous set indivisible into classes.

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