The billion-year-old clusters of the Magellanic Clouds

The billion-year-old clusters of the Magellanic Clouds

Five clusters of the Magellanic Clouds in the age range of about one billion years have faint enough photometry to allow comparison with theoretical models. Semiempirical relationships are derived from various theoretical models that allow a determination of ages and chemical abundances for the clus...

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Veröffentlicht in:Astrophys. J.; (United States) 1982-05, Vol.256, p.447
1. Verfasser: Hodge, P. W.
Format: Artikel
Sprache:eng
Schlagworte:
640105 - Astrophysics & Cosmology- Galaxies
ABUNDANCE
AGE ESTIMATION
CHEMICAL COMPOSITION
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
ELEMENTS
GALAXIES
HYDROGEN
IRON
MAGELLANIC CLOUDS
METALS
NONMETALS
STAR CLUSTERS
STAR EVOLUTION
TRANSITION ELEMENTS
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Beschreibung
Zusammenfassung:Five clusters of the Magellanic Clouds in the age range of about one billion years have faint enough photometry to allow comparison with theoretical models. Semiempirical relationships are derived from various theoretical models that allow a determination of ages and chemical abundances for the clusters in question. Values for (Fe/H) ranging from -0.8 to -1.3 are found, and ages range from 0.7 to 1.1 billion years.
ISSN:0004-637X
1538-4357
DOI:10.1086/159921