Gravitational collapse in Weyl integrable spacetimes

Spherically symmetric gravitational collapse in Weyl integrable spacetime i s studied by some simplified models. The matter content is represented by a perfect fluid coupled with the geometric scalar field. A family of analyti cal solutions is found for a non-radiative collapsing nebulae of dust and t he condition for black hole formation is established. Junction conditions w ith an exterior spacetime and the radiative collapse of a spherical star ar e also studied. In this case we find two classes of solutions with an exter ior Vaidya spacetime: one with no internal heat flux while the other is obt ained from a static initial condition.