In this work we seek evidence for global torsional oscillations in alpha sunspots. We have used long time series of continuum intensity and magnetic field...

The Geminga pulsar, one of the brighest gamma-ray sources, is a promising candidate for emission of very-high-energy (VHE > 100 GeV) pulsed gamma rays. Also...

Context. The total mass of a cluster, which is the main parameter determining its ability to host more than one stellar generation, may constitute a threshold...

Context. Clusters of galaxies are located at the intersection of cosmic filaments and are still accreting galaxies and groups along these preferential...

Studying the composition of exoplanets is one of the most promising approaches to observationally constrain planet formation and evolution processes. However...

Aims: The aim of this work is to search for Li-rich giants in a sample of clusters where planets have been searched, thus we can study the planet engulfment...

Active galactic nucleus (AGN) driven outflows are believed to play an important role in regulating the growth of galaxies, mostly via negative feedback. However...

The search for solar siblings has been particularly fruitful in the past few years. At present, there are four plausible candidates reported in the literature...

Context. The formation and evolution of dwarf galaxies is relatively difficult to understand because of their faint emission in all regimes that require large...