We present new observational results on the kinematical, morphological, and stellar population properties of a sample of 21 dEs located both in the Virgo Cluster and in the field, which show that 52% of the dEs (1) are rotationally supported, (2) exhibit structural signs of typical rotating systems such as disks, bars, or spiral arms, (3) are

High resolution spectroscopic observations have been obtained for the ring nebulae around the galactic Wolf-Rayet stars WR 113 (CV Ser), WR 116, WR 128 (MR 95), WR 133, WR 134 (MR 100) and WR 153 using an echelle spectrograph. Gaussian fit analysis of the emission lines has been performed to establish the dynamical classification of the objects as

We present the first results of intermediate resolution spectral observations in the CaII triplet region obtained with VLT/FLAMES for 3 dwarf spheroidal galaxies in the Local Group: Sculptor, Fornax and Sextans. For each galaxy, we obtained accurate velocity and metallicity measurements for hundreds of stars out to and beyond the tidal radius: this

Much of the inner Milky Way’s (MW) global rotation and velocity dispersion patterns can be reproduced by models of secularly evolved, bar-dominated bulges. More sophisticated constraints, including the higher moments of the line-of-sight velocity distributions (LOSVDs) and limits on the chemodynamical substructure, are critical for interpreting

In this thesis, we investigate the emergence of kinetic processes in finite quantum systems. We first generalize the Redfield theory to describe the dynamics of a small quantum system weakly interacting with an environment of finite heat capacity. We then study in detail the spin-GORM model, a model made of a two-level system interacting with a