Herbig-Haro Objects and Protoplanetary Discs

Herbig-Haro objects are associated with T Tau stars, being the structures that were formed from their winds. Also, the discs that form in the planetary nebulae are very similar to the protoplanetary ones and the dynamics they generate is very similar, so the models used to explain them are also applicable here. Information on the characteristics of the disc as density, and its spatial variation, and temperature are obtained from these models. This study will serve to independently verify the results on protoplanetary discs.