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Title:
The Unique History of the Globular Cluster ω Centauri
Authors:
Gnedin, Oleg Y.; Zhao, HongSheng; Pringle, J. E.; Fall, S. Michael; Livio, Mario; Meylan, Georges
Affiliation:
AA(Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218; .), AB(Institute of Astronomy, Madingley Road, Cambridge CB3 0HA, UK.), AC(Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218; .; Institute of Astronomy, Madingley Road, Cambridge CB3 0HA, UK.), AD(Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218; .), AE(Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218; .), AF(Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218; .)
Publication:
The Astrophysical Journal, Volume 568, Issue 1, pp. L23-L26. (ApJ Homepage)
Publication Date:
03/2002
Origin:
UCP
ApJ Keywords:
Galaxy: Formation, Galaxy: Globular Clusters: Individual: NGC Number: NGC 5139
DOI:
10.1086/340319
Bibliographic Code:
2002ApJ...568L..23G

Abstract

Using current observational data and simple dynamical modeling, we demonstrate that ω Cen is not special among the Galactic globular clusters in its ability to produce and retain the heavy elements dispersed in the asymptotic giant branch phase of stellar evolution. The multiple stellar populations observed in ω Cen cannot be explained if it had formed as an isolated star cluster. The formation within a progenitor galaxy of the Milky Way is more likely, although the unique properties of ω Cen still remain a mystery.
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