UBV photoelectric photometry of the open cluster NGC 2539

Astronomy and Astrophysics – Astronomy

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Astronomical Photometry, Open Clusters, Ubv Spectra, Visual Photometry, Chronology, Distance, Electrophotometry, Hertzsprung-Russell Diagram

Scientific paper

Photoelectric UBV magnitudes have been determined for stars in the region of the cluster NGC 2539. The authors discuss the cluster membership of all the 135 photoelectrically observed stars, out of which 74 stars have been classified as cluster member. The average value of reddening is E(B-V) = 0.08±0.02 mag and the cluster distance is estimated at 1050±150 pc. H-R diagram and age of the cluster are also discussed.

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