319 citations · 1.5k across the 23 of their papers we have counts for
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astro-ph2005
Multiple helium abundances in Globular Clusters stars: Consequences for the Horizontal Branch and RR Lyrae
Francesca D'Antona, Paolo Ventura, Vittoria Caloi
Most inhomogeneities in the chemical composition of GC stars are due to primordial enrichment. The model today most credited is that the winds lost by high mass Asymptotic Giant Br…
astro-ph2005★ 319 cited
A helium spread among the main sequence stars in NGC 2808
F. D'Antona, M. Bellazzini, V. Caloi +3
We studied the color distribution of the main sequence of the Globular Cluster NGC 2808, based on new deep HST-WFPC2 photometry of a field in the uncrowded outskirts of the cluster…