Roberto Rampazzo

TL;DR: In this article, the underlying stellar population of a sample of 65 nearby early-type galaxies, predominantly located in low density environments, a large fraction of which show emission lines, was derived through the comparison of Lick indices measured at different galacto-centric distances (7-apertures and 4-gradients) with new simple stellar population(SSP) models that account for the presence of α/Fe-enhancement.

TL;DR: In this article, the authors analyzed intermediate-resolution optical spectra of a s ample of 65 early-type galaxies, mostly located in low density environments and biased toward the presence of ISM traces, for which they already derived in the previous papers the stellar population properties.

TL;DR: In this article, high signal-to-noise ratio Spitzer Infrared Spectrograph observations of 17 Virgo early-type galaxies were used to detect the silicate emission of their dusty, mass-losing evolved stars.

TL;DR: In this paper, a volume-limited sample of early-type galaxies in the redshift range 0.005 < z≤ 0.1 was used to define the density of the local environment for each galaxy using a method which takes account of the redshifted bias introduced by survey boundaries.

TL;DR: In this article, the underlying stellar population of a sample of 65 nearby early-type galaxies, predominantly located in low density environments, a large fraction of which show emission lines, was derived through the comparison of Lick indices measured at different galacto-centric distances (7-apertures and 4-gradients) with new simple stellar population(SSP) models that account for the presence of α/Fe-enhancement.