The connection between the Stellar Velocity Ellipsoid (SVE) and the dynamical evolution of galaxies has been a matter of debate in the last years and there is no clear consensus whether different heating agents (e.g. spiral arms, giant molecular clouds, bars and mergers) leave clear detectable signatures in the present day kinematics. Most of these

We present morphological classifications of ~27 million galaxies from the Dark Energy Survey (DES) Data Release 1 (DR1) using a supervised deep learning algorithm. The classification scheme separates: (a) early-type galaxies (ETGs) from late-type galaxies (LTGs); and (b) face-on galaxies from edge-on. Our convolutional neural networks (CNNs) are

Fossil groups are considered the end product of natural galaxy group evolution in which group members sink towards the centre of the gravitational potential due to dynamical friction, merging into a single, massive, and X-ray bright elliptical. Since gravitational lensing depends on the mass of a foreground object, its mass concentration, and

We present new near-infrared spectra of 55 objects observed using the NASA InfraRed Telescope Facility and the Telescopio Nazionale Galileo, along with visible spectra of 21 objects obtained from the SMASS and S 3OS 2 surveys, to explore the differences in spectral slope and curvature between the background and the families and to show that the

After three decades of the discovery of the first extrasolar planet, the number of known exoplanets has grown exponentially to more than 4000. This rapid evolution in the number of discoveries has been mainly produced by the launch of the two most effective planet-hunter missions, Kepler and TESS, which have been performing a massive search of

El segundo catálogo Planck de fuentes Sunyaev-Zeldovich (SZ), PSZ2 en lo sucesivo, representa la mayor muestra de cumulos de galaxias seleccionados por su señal SZ cubriendo todo el cielo. En el momento de su publicación, el 21% de estos objetos no tenía una contrapartida conocida en otras longitudes de onda. Usando telescopios de los