The age of the LMC globular cluster NGC 1783

Details The age of the LMC globular cluster NGC 1783 The age of the LMC globular cluster NGC 1783

Apr 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989apj...339...84m&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 339, April 1, 1989, p. 84-92. Research supported by NASA.

Astronomy and Astrophysics

Astrophysics

28

Astronomical Photometry, Globular Clusters, Magellanic Clouds, Stellar Evolution, Asymptotic Giant Branch Stars, Chemical Composition, Color-Magnitude Diagram, M Stars, Red Giant Stars, Stellar Atmospheres

Scientific paper

The age of the LMC red globular cluster NGC 1783 is estimated as 0.9 + or - 0.4 billion yr by photometry of the main-sequence turnoff. The accuracy of the estimate is limited chiefly by the uncertainty in the distance modulus of the cluster. At (m - M)0 = 18.2 the cluster is aged 1.1 + or - 0.2 Gyr; at (m - M)0 = 18.7 it is 0.7 + or - 0.2 Gyr. NGC 1783 is a sufficiently rich cluster that one can see the full development of red giants on the asymptotic giant branch from the M type, through S, to carbon-rich atmospheres.

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