The manifold of globular clusters

Details The manifold of globular clusters The manifold of globular clusters

Oct 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984a%26a...139..474b&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 139, no. 2, Oct. 1984, p. 474-476. Research supported by the Deutsche Forschun

Astronomy and Astrophysics

Astrophysics

14

Globular Clusters, Interstellar Extinction, Metallicity, Dimensions, Principal Components Analysis, Spiral Galaxies

Scientific paper

A principal component analysis is performed for a sample of globular clusters based on the data of Harris and Racine (1979). The parameters treated in the study are the galactometric distance R, the tidal radius, the concentration index, the total absolute magnitude, the color B-V corrected for interstellar reddening, and the metallicity Fe/H. It is shown that the observationally significant number of dimensions is three. The relation between the observed 'tidal radius' and the galactometric distance is consistent with its interpretation as a tidal radius.

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