Age differences between globular clusters

Details Age differences between globular clusters Age differences between globular clusters

Jun 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990jrasc..84..137b&link_type=abstract

Journal of the Royal Astronomical Society of Canada (ISSN 0035-872X), vol. 84, June 1990, p. 137-149.

Other

8

Chronology, Galactic Evolution, Globular Clusters, Metallicity, Astronomical Photometry, Halos, Iron, Oxygen

Scientific paper

The difficulties in determining absolute and relative globular cluster ages are reviewed. Even with the recent improvements in detector technology, the errors introduced by uncertainties in Fe/H, O/Fe, E(B-V), and the photometric calibrations of cluster observations, are large enough that the distribution of cluster ages is still unknown. There is now good evidence that at least one cluster, Palomar 12, is significantly (30 percent) younger than other well-studied clusters, and a strong suggestion that clusters NGC 288 and NGC 362 differ in age by about 20 percent.

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