791 citations · 7.5k across the 72 of their papers we have counts for
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astro-ph1999★ 229 cited
Galactic Globular Cluster Relative Ages
A. Rosenberg, I. Saviane, G. Piotto +1
Based on a new large, homogeneous photometric database of 35 Galactic globular clusters (GGCs), a set of distance and reddening independent relative age indicators has been measure…
astro-ph1999★ 89 cited
HST Observations of Galactic Globular Cluster Cores. II. NGC 6273 and the Problem of Horizontal-Branch Gaps
G. Piotto, M. Zoccali, I. R. King +3
We present observations of the center of the Galactic globular cluster NGC 6273, obtained with the HST/WFPC2 camera as part of the snapshot program GO-7470. A B, V color-magnitude…