Submillimeter water masers as excellent tools to study jet-disk like structures in high-mass YSOs?

Water is one of the few molecules capable of producing maser emission in star-forming regions and it has been detected in a wide range of masses from low to massive young stellar objects (YSO). Previous studies focused on the water maser transition at 22 GHz, which constitutes a good tracer of mass-loss activity in young stars of all masses. In low-mass protostars these are mostly present during the first stages of their evolution and they tend to be located close to the central protostar when the most powerful mass-loss phenomena are present. Recent studies suggest these masers trace also mass loss phenomena in intermediate and high mass YSOs. The water molecule shows several maser transitions at submillimeter wavelengths, which makes last generation of submillimeter telescopes like APEX and ALMA excellent facilities to follow up in the submillimeter the studies done in the past decades at 22 GHz. In this talk we present preliminary results on a survey of submillimeter water maser transitions at 321 and 325 GHz in a sample of YSOs with a wide range of masses, from high- to low-mass