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The temperature distribution of horizontal branch stars: methods and first results
E. P. Lagioia, E. Dalessandro, F. R. Ferraro +4
As part of a large project aimed at characterizing the ultraviolet (UV) properties of globular clusters, we present here a theoretical and observational analysis aimed at setting t…
The globular cluster NGC 6528 the ferrous side of the Galactic Bulge
E. P. Lagioia, A. P. Milone, G. Bono +12
We present new and accurate optical photometry of the Bulge globular cluster NGC 6528. The images were collected with ACS at HST and together with WFC3 (UVIS, IR) allowed us to mea…
Stroemgren - near-infrared photometry of the Baade's Window. I. The bulge globular cluster NGC6528 and the surrounding field
Annalisa Calamida, Giuseppe Bono, Edoardo P. Lagioia +9
We present Stroemgren-NIR photometry of NGC6528 and its surroundings in the Baade's Window. uvby images were collected with EFOSC2@NTT, while NIR catalogs are based on VIRCAM@VISTA…
WFPC2 UV survey of Galactic Globular Clusters. The Horizontal Branch temperature distribution
E. P. Lagioia, E. Dalessandro, F. R. Ferraro +2
Ultraviolet observations are the best tool to study hot stellar populations which emit most of their light at short wavelengths. As part of a large project devoted to the character…