The evolution of the Magellanic Clouds. I - The ages of globular clusters

Details The evolution of the Magellanic Clouds. I - The ages of globular clusters The evolution of the Magellanic Clouds. I - The ages of globular clusters

Jun 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988ap%26ss.145..251f&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 145, no. 2, June 1988, p. 251-261.

Astronomy and Astrophysics

Astrophysics

10

Asymptotic Giant Branch Stars, Globular Clusters, Magellanic Clouds, Color-Magnitude Diagram, Stellar Luminosity, Temperature Distribution

Scientific paper

The observed maximum luminosities of AGB stars in the Magellanic Cloud clusters were compared with luminosities obtained theoretically in order to estimate the ages of the clusters. Several rates of mass loss by AGB stars are considered.The ages for 10 clusters in the SMC and 25 in the LMC are presented in the tables with the compilations of ages from the literature quoted. The discrepancies between ages derived from the AGB peak luminosities and from the Main-Sequence turn off and maximum luminosity are explained by allowing for intensive mass-loss during the AGB evolutionary phase. The method is useful only if the brightest star is on the thermally pulse AGB phase but not in the early-AGB phase.

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