We present a comparison between theoretical models and the observed magnitude difference between the horizontal branch and the red giant branch bump for a sample of 53 clusters. We find a general agreement, though some discrepancy is still present at the two extremes of the metallicity range of globular clusters.
@article{arxiv.astro-ph/0303295,
title = {The Red Giant Branch Bump},
author = {M. Riello and G. Piotto and A. Recio-Blanco and S. Cassisi and M. Salaris},
journal= {arXiv preprint arXiv:astro-ph/0303295},
year = {2007}
}
Comments
2 pages, 1 figure, A.S.P. Conf. Ser., in press in Vol. 296, 2003