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Observations of hot stars belonging to the young cluster SMC-NGC330 and itssurrounding region were obtained with the VLT-GIRAFFE facilities in MEDUSAmode. We investigated the B and Be star properties and proportions in thisenvironment of low metallicity. We also searched for rapid variability in Bestars using photometric databases. With spectroscopic measurements wecharacterized the emission and properties of Be stars. By cross-correlationwith photometric databases such as MACHO and OGLE, we searched for binaries inour sample of hot stars, as well as for short-term variability in Be stars. Wereport on the global characteristics of the Be star sample (131 objects). Wefind that the proportion of early Be stars with a large equivalent width of theHalpha emission line is higher in the SMC than in the LMC and MW. We find aslight increase in the proportion of Be stars compared to B-type stars withdecreasing metallicity. We also discovered spectroscopic and photometricbinaries, and for the latter we give their orbital period. We identify 13 Bestars with short-term variability. We determine their period(s) and find that 9Be stars are multiperiodic.

Be stars and binaries in the field of the SMC open cluster NGC330 with VLT-FLAMES