Turbulent disc viscosity and the bifurcation of planet formation histories

ABSTRACT ALMA observations of dust ring/gap structures in a minority but growing sample of protoplanetary discs can be explained by the presence of planets at large disc radii – yet the origins of these planets remains debated. We perform planet formation simulations using a semi-analytic model of the HL Tau disc to follow the growth and migration of hundreds of planetary embryos initially distributed throughout the disc, …