In the past decade, a consensus has emerged regarding the nature of classical Be stars:
They are very rapidly rotating main sequence B stars, which, through a still unknown, but …

Rapid rotation is a fundamental characteristic of classical Be stars and a crucial property
allowing for the formation of their circumstellar disks. Past evolution in a mass and angular …

Be stars are main-sequence massive stars with emission features in their spectrum, which
originates in circumstellar gaseous discs. Even though the viscous decretion disc model can …

Context. About 2/3 of the Be stars present the so-called variations, a phenomenon
characterized by the quasi-cyclic variation in the ratio between the violet and red emission …

Be stars possess gaseous circumstellar disks that modify in many ways the spectrum of the
central B star. Furthermore, they exhibit variability at several timescales and for a large …

We apply the viscous decretion disc (VDD) model to interpret the infrared disc continuum
emission of 80 Be stars observed in different epochs. In this way, we determined 169 …

We discuss the basic hydrodynamics that determines the density structure of the disks
around hot stars. Observational evidence supports the idea that these disks are Keplerian …

We analysed V-band photometry of the Be star ω CMa, obtained during the last four
decades, during which the star went through four complete cycles of disc formation and …

Be stars are surrounded by outflowing circumstellar matter structured in the form of decretion
discs. They are often members of binary systems, where it is expected that the decretion disc …

We investigate the continuum emission of viscous decretion discs around Be stars in this
paper. The results obtained from non-LTE (local thermodynamic equilibrium) radiative …