What has happened in the cores of globular clusters

Details What has happened in the cores of globular clusters What has happened in the cores of globular clusters

Dec 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982apj...263l..19l&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor, vol. 263, Dec. 1, 1982, p. L19-L22.

Astronomy and Astrophysics

Astrophysics

27

Globular Clusters, Stellar Motions, Mass Distribution, Star Distribution

Scientific paper

It is found that some aspects of the observed data for globular cluster cores cannot be easily explained in terms of the existing theory of dynamical evolution. It is noted that globular clusters span only a factor of 40 in core mass, while ranging over a factor of 10 to the 6th in central density, an observation that cannot be explained as a selection effect. A strong correlation is found between the central density and the distance of a cluster from the galactic center. In addition, when cluster cores are evolved backward in time in their initial conditions, using the available theory of dynamical evolution, evidence emerges that many clusters have already undergone core collapse, for which no evolutionary theory exists. It is concluded that these results indicate the incompleteness of the theory of dynamical evolution.

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