Program: GN-2006B-Q-28

Be stars are early-type rapid rotators with emission lines originated in circumstellar envelopes. The variability present in lines of these stars can be explained with different envelope models. Due to the sensitivity of Hydrogen IR lines to changes in the physical properties of their forming regions, they are useful to study the presence of high temperature regions and high density structures. Mg II lines in the IR K band, are also sensitive to changes in the physical conditions of the disk. We expect to increase our knowledge about the circumstellar environment of Be stars by means of IR spectroscopy. This will enable us to discuss the model which best fits the observed features in the circumstellar envelope.