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There is a type of stars connecting giant planets and stars: the brown dwarfs. These “failed stars” have a mass ranging from 13 to 80 Jupiter masses, enough to ignite deuterium burning, but not hydrogen such as main sequence stars.     It is still not clear whether brown dwarfs form like planets or like stars. Planets form in protoplanetary

Many, maybe most, of the stars in our Galaxy born in clusters. However, even if star formation in clusters is one of the main modes of star formation in the Milky Way, we still have not fully understood how stellar clusters form, evolve, and disperse.   A detailed study on the evolution of stellar clusters requires the analysis of the

The study of the evolution of the Milky Way is one of the main tasks of the Gaia-ESO Survey (link). To this aim, the analysis of the stellar population of the galactic bulge is of particular importance. The bulge is in fact populated by old stars, likely formed in the early evolution of our Galaxy. To date, two scenarios have

di Mario Giuseppe Guarcello    ( segui mguarce)     Lo studio delle regioni di formazione stellare prossimi al Sole riveste una grande importanza. Stelle giovani vicine a noi, infatti, possono essere analizzate in grande dettaglio con la strumentazione disponibile, più o meno su tutto lo spettro elettromagnetico. Le dettagliate e stupende immagini ALMA dei dischi protoplanetari vicini al Sole, colti nell’atto