The extended giant branches of intermediate age globular clusters in the Magellanic Clouds. III

Details The extended giant branches of intermediate age globular clusters in the Magellanic Clouds. III The extended giant branches of intermediate age globular clusters in the Magellanic Clouds. III

Dec 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982apj...263..629m&link_type=abstract

Astrophysical Journal, Part 1, vol. 263, Dec. 15, 1982, p. 629-638.

Astronomy and Astrophysics

Astronomy

121

Globular Clusters, Magellanic Clouds, Stellar Evolution, Stellar Spectrophotometry, Astronomical Photography, Asymptotic Giant Branch Stars, Carbon Stars, Hertzsprung-Russell Diagram, Infrared Astronomy, Late Stars, Stellar Luminosity

Scientific paper

The latest findings of a photographic near-IR survey of the red globular clusters in the Magellanic Clouds for upper asymptotic giant branch stars are reported. New IR (JHK) photometry for some 80 cluster stars is also presented. These results combined with earlier data are used to derive age estimates for a nearly complete sample of Cloud clusters having an integrated absolute magnitude less than -7. The age distribution of clusters in the Large Cloud, which shows a pronounced peak at 4 Gyr, may be different from that in the Small Cloud. This peak could be a result of luminosity evolution of clusters, however, and a constant rate of cluster formation in the Large Cloud cannot be ruled out. A cluster age-metallicity relation clearly exists in the Large Cloud, althoug the degree of scatter about this relation is somewhat uncertain and may be significant.

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