Circumstellar Ring Formation at the Protostellar Collapse

R. D. ROHRMANN, M. GÓMEZ

Córdoba

Congreso; X Reunion Regional Latinoamericana de Astronomia; 2001

IAU

We apply a model based in kinetic theory of rotating self-gravitating gases that foresees the formation of a circumstellar ring as result of the gravitational collapse and a strong transference of angular momentum to the boundaries of the system. The calculated rings are typically located within few AU from the central source, at distances where extra-solar planets have recently been found. We study the implication of the ring to the evolution of the stellar embryo and to the possible location of a subsequent planetary formation.