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Title:
A preliminary survey of collapsed cores in globular clusters
Authors:
Djorgovski, S.; King, I. R.
Affiliation:
AA(California, University, Berkeley), AB(California, University, Berkeley)
Publication:
Astrophysical Journal, Part 2 - Letters to the Editor (ISSN 0004-637X), vol. 305, June 15, 1986, p. L61-L65. (ApJL Homepage)
Publication Date:
06/1986
Category:
Astrophysics
Origin:
STI
NASA/STI Keywords:
Astronomical Photometry, Galactic Evolution, Globular Clusters, Charge Coupled Devices, Gravitational Collapse
DOI:
10.1086/184685
Bibliographic Code:
1986ApJ...305L..61D

Abstract

This is a preliminary report on surface photometry of the major fraction of known globular clusters, to see which of them show the signs of a collapsed core. The authors find more than 20 examples, or one-fifth of the total. Core classifications are given for all clusters examined. The fraction of collapsed-core clusters may be an index of how long a cluster takes to reexpand after collapse.

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