Variabilidad espectral en el IR de estrellas Be

COCHETTI, Y. R.; ARIAS, M. L.; CIDALE, L.; GRANADA, A.

Congreso; 58 Reunion Anual de la Asociacion Argentina de Astronomia; 2015

In this work we present infrared spectra of a sample of Be starsobtained with the Gemini/NIRI and Gemini/GNIRS spectrographs indifferent observing runs. We analyze the shape and intensity of thehydrogen lines in emission, and we derive properties of thecircumstellar envelopes. For some particular objects, we analyze thespectral variability in the infrared together with optical observations.The study of the Be phenomenon in different spectral ranges results avaluable tool for diagnostics of the disk structure, because theobserved emission in different wavelengths emerges from differentregions of the disks.