The clusters NGC 419 and NGC 416 in the Wing of the Small Magellanic Cloud

Details The clusters NGC 419 and NGC 416 in the Wing of the Small Magellanic Cloud The clusters NGC 419 and NGC 416 in the Wing of the Small Magellanic Cloud

Aug 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984apj...283..552d&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 283, Aug. 15, 1984, p. 552-559. Research supported by the Natural Sciences

Astronomy and Astrophysics

Astrophysics

22

Hertzsprung-Russell Diagram, Magellanic Clouds, Star Clusters, Star Distribution, Stellar Composition, Stellar Evolution, Astronomical Photography, Interstellar Extinction, Metallicity, Stellar Color, Stellar Magnitude, Stellar Spectrophotometry

Scientific paper

The clusters NGC 419 and NGC 416 are located in the 'Wing' region of the Small Magellanic Cloud (SMC), and represent two of the brightest and richest members of the SMC. The present investigation is concerned with the construction of color-magnitude diagrams (CMDs) for both clusters. The CMDs are analyzed, taking into account the global features, a photometric estimate of the cluster metallicities, and the ages and the distance-reddening problem. It is found that NGC 416 is about 1.5 Gyr older than NGC 419. The clusters' absolute ages are 2.5 + or - 0.7 Gyr and 1.2 + or - 0.5 Gyr, respectively. Integrated photometry is feasible to very low apparent magnitudes, and, for this reason, any calibration of integrated photometric indices versus age and/or metallicity, which can be performed in the Magellanic Clouds, is of fundamental importance in the study of more distant unresolved galaxies.

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