Dwarf spheroidal (dSph) galaxies are the smallest, closest and most abundant galaxies in the Universe and therefore excellent laboratories to study star...
Resuelto el misterio de cómo se distribuye la materia oscura en las galaxias
La fuerza de la gravedad necesaria para que el Universo haya evolucionado desde que era prácticamente uniforme en el Big Bang hasta ahora, cuando la materia se...
S4G: The Spitzer Survey of Stellar Structure in Galaxies
Galaxies are the basic building blocks of the Universe, and understanding their formation and evolution is crucial to many areas of current astrophysical...
The last years saw numerous detections of substructure in the Galactic halo, largely due to wide area surveys like the Sloan Digital Sky Survey (SDSS) or the...
Searching for Tidal Remnants in the Milky Way: Photometric Survey of Globular Clusters
The picture of building the Milky Way halo from the merger of protogalactic fragments is considered the local manifestation of the hierarchical galaxy formation...
Shedding light on the darkest galaxies: the Local Group dwarfs
Crucial issues in cosmology and astrophysics are to understand the process of galaxy formation and evolution and the nature of what appears to be the dominant...
The first galaxies are thought to have started the reionization of the Universe, that is the transformation of the cosmic hydrogen from its initial neutral to...
Star Formation Histories of Ultra-faint Dwarf Galaxies: Environmental Differences between Magellanic and Non-Magellanic Satellites?
We present the color-magnitude diagrams and star formation histories (SFHs) of seven ultra-faint dwarf galaxies: Horologium 1, Hydra 2, Phoenix 2, Reticulum 2...
Star formation modes and population gradients in simulated dwarf galaxies
Today we largely understand the large scale evolution of the Universe but we have only little knowledge of the small scale physics involved in forming and...