Infrared photometry of giants in the globular cluster NGC 4833

Astronomy and Astrophysics – Astronomy

Scientific paper

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Globular Clusters, Infrared Photometry, Red Giant Stars, Stellar Luminosity, Stellar Magnitude, Bolometers, Color-Magnitude Diagram, Stellar Evolution, Stellar Temperature

Scientific paper

Infrared broad band JHK photometry is presented for 21 red giants in the metal-poor globular cluster NGC 4833. The colour magnitude and colour-colour correlations are discussed. Bolometric luminosities are calculated from apparent K magnitudes by using bolometric corrections for giants. A comparison with Yale isochrones gives most likely age of this cluster to be about 12×109yr.

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