Agb Connection and Ultraviolet Luminosity Excess in Elliptical Galaxies


Relying on infrared surface brightness fluctuactions to trace AGB properties in a sample of elliptical galaxies in the Virgo and Fornax clusters, we assess the puzzling origin of the “UV-upturn” phenomenon, recently traced down to the presence of a hot horizontal branch (HB) stellar component. We find that the UV-upturn actually signals a profound change in… (More)


15 Figures and Tables