Ultraviolet colors of old LMC clusters

Details Ultraviolet colors of old LMC clusters Ultraviolet colors of old LMC clusters

Dec 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992pasp..104.1216c&link_type=abstract

Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 104, no. 682, p. 1216-1219.

Astronomy and Astrophysics

Astronomy

1

Globular Clusters, Magellanic Clouds, Ultraviolet Astronomy, Iue, Stellar Color

Scientific paper

New ultraviolet spectra for five red LMC globular clusters have been obtained with IUE. These have been supplemented with archival spectra for eleven old LMC clusters. These data strengthen and extend the UV-color versus age relation for clusters older than about 10 exp 9 yr, but do not offer much precision in age determination, presumably because the ultraviolet colors of the oldest clusters depend strongly on the horizontal-branch morphology. Comparison of LMC data with UV colors for the brightest M31 clusters suggests their ages might be only a few gigayears.

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