  Interested in the collapse of a radiating star, we study the temporal
evolution of a fluid with heat flux and bulk viscosity, including anisotropic
pressure. As a starting point, we adopt an initial configuration that satisfies
the regularities conditions as well as the energy conditions to a certain range
of the mass-radius ratio for the star, defining acceptable models. For this set
of models, we verify that the energy conditions remain satisfied until the
black hole formation. Astrophysical relevant quantities, such as the luminosity
perceived by an observer at infinity, the time of event horizon formation and
the loss of mass during the collapse are presented.
