We present the discovery of a new dwarf galaxy, Hydra II, found serendipitously within the data from the ongoing Survey of the Magellanic Stellar History conducted with the Dark Energy Camera on the Blanco 4 m Telescope. The new satellite is compact ({{r}h}=68 ± 11 pc) and faint ({{M}V}=-4.8 ± 0.3), but well within the realm of dwarf galaxies. The

The refinement of the brown dwarf binary fraction may contribute to the understanding of the substellar formation mechanisms. Peculiar brown dwarf spectra or discrepancy between optical and near-infrared spectral type classification of brown dwarfs may indicate unresolved brown dwarf binary systems. We obtained medium-resolution spectra of 22 brown

Context. Lightning flashes in Jupiter have been observed by spacecraft orbiting the planet, but so far, they have escaped optical detection from Earth. However, theoretical estimations suggest that these flashes may be detectable by a large telescope if they can be distinguished from the much more intense background of reflected sunlight from the

GLACE is performing a survey of emission-line galaxies in clusters with the main aim of studying the effect of the environment in the star formation activity. The innovation of this work is the use of tunable filters in scan mode to obtain low resolution spectra of the desired emission lines. Although the survey is in its initial stage, we have

Numerical simulations predict that gas accretion from the cosmic web drives star formation in disks galaxies. The process is more important in low mass haloes, therefore, when galaxies were low mass in the early universe, but also in dwarf galaxies of the local universe. The central role played by cosmic gas infall is as clear from numerical

We investigate the influence of galaxy-galaxy interactions on the star formation by studying a sample of almost 1500 of the nearest galaxies, all within a distance of 40 Mpc. We calculate the relative enhancement of the massive star formation rate (SFR), as measured from far-IR emission, and the specific star formation rate (SSFR), which is the