CCD UBVRI Photometry of the Galactic open clusters: Be 89, Ru 135, and Be 10

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Inci Akkaya
William J. Schuster
Raúl Michel
Carlos Chavarría-K
André Moitinho
Roberto Vázquez
Yüksel Karatas

Abstract

The fundamental parameters of reddening, metallicity, age, and distance are presented for the poorly studied open clusters Be 89, Ru 135, and Be 10, derived from their CCD UBVRI photometry. The interstellar reddenings, E(B–V ), were measured in the two-color diagram, and the photometric metallicities, [Fe/H], from the ultraviolet excesses of the F-type stars. By fitting isochrones to the observed sequences of the clusters in five different color-magnitude diagrams, the weighted averages of distance moduli and heliocentric distances [(V0–MV ), d(kpc)] are (11.m 90 ± 0.m 06, 2.4 ± 0.06) for Be 89, (9.m 58 ± 0.m 07, 0.81 ± 0.03) for Ru 135, and (11.m 16 ± 0.m 06, 1.7 ± 0.05) for Be 10, and the weighted averages of the ages [log(A),A(Gyr)] are (9.58 ± 0.06, 3.8 ± 0.6) for Be 89, (9.58 ± 0.06, 3.8 ± 0.7) for Ru 135, and (9.06 ± 0.05, 1.08 ± 0.08) for Be 10.

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How to Cite
Akkaya, I., Schuster, W. J., Michel, R., Chavarría-K, C., Moitinho, A., Vázquez, R., & Karatas, Y. (2010). CCD UBVRI Photometry of the Galactic open clusters: Be 89, Ru 135, and Be 10. Revista Mexicana De Astronomía Y Astrofísica, 46(2). Retrieved from https://www.revistas.unam.mx/index.php/revmexaa/article/view/20589