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Hubble Space Telescope Proper Motion (HSTPROMO) Catalogs of Galactic Globular Clusters. I. Sample Selection, Data Reduction and NGC 7078 Results
A. Bellini, J. Anderson, R. P. van der Marel +9
We present the first study of high-precision internal proper motions (PMs) in a large sample of globular clusters, based on Hubble Space Telescope (HST) data obtained over the past…
NLTE effects on AGB stars in 47 Tucanae
Emilio Lapenna, Alessio Mucciarelli, Barbara Lanzoni +4
We present the iron abundance of 24 asymptotic giant branch (AGB) stars members of the globular cluster 47 Tucanae, obtained with high-resolution spectra collected with the FEROS s…
First evidence of fully spatially mixed first and second generations in globular clusters: the case of NGC 6362
E. Dalessandro, D. Massari, M. Bellazzini +6
We present the first evidence of multiple populations in the Galactic globular cluster NGC 6362. We used optical and near-UV Hubble Space Telescope and ground based photometry, fin…