Lucio M. Buson

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Context. Systems of shells and polar rings in early-type galaxies are considered " bona fide " tracers of mass accretion and/or mergers. Their high frequency in low density environments suggests that such episodes could drive the evolution of at least a fraction of the early-type galaxy population. Aims. We aim to cast light on the star formation histories(More)
(2015) The transformation of Spirals into S0 galaxies in the cluster environment. We discuss the observational evidences of the morphological transformation of Spirals into S0 galaxies in the cluster environment exploiting two big databases of galaxy clusters: WINGS (0.04 < z < 0.07) and EDisCS (0.4 < z < 0.8). The most important results are: (1) the(More)
The nucleus of the bulge-dominated, multiply-barred S0/a galaxy NGC 2681 is studied in detail, using high resolution Hubble Space Telescope FOC and NICMOS imaging and FOS spectroscopy. The ionised gas central velocity dispersion is found to increase by a factor ≈ 2 when narrowing the aperture from R ≈ 1. ′′ 5 (ground) to R ≈ 0. ′′ 1 (FOS). Dynamical(More)
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