Showing 2000Show all
2 papers · 1 filter
astro-ph2000
The anomalous Galactic globular cluster NGC 2808
L. R. Bedin, G. Piotto, M. Zoccali +4
We present UBVI photometry for about 60,000 stars in a region of 44'x33' centered on the Galactic globular cluster (GGC) NGC 2808. The central region has been mapped with the HST W…
astro-ph2000
Comparison between Observed and Theoretical Red Giant Branch Luminosity Functions of Galactic Globular Clusters
M. Zoccali, G. Piotto
V-band luminosity functions have been obtained for the upper main-sequence, sub-giant branch and red giant branch of 18 galactic globular clusters from HST data. A comparison with…