Protoneutron stars within the Brueckner-Bethe-Goldstone theory
  We study the structure of newly born neutron stars (protoneutron stars) within the finite temperature Brueckner-Bethe-Goldstone theoretical approach including also hyperons. We find that for purely nucleonic stars both finite temperature and neutrino trapping reduce the value of the maximum mass. For hyperonic stars the effect is reversed, because neutrino trapping shifts the appearance of hyperons to larger baryon density and stiffens considerably the equation of state. 
O. E. Nicotra, M. Baldo, G. F. Burgio, and H.-J. Schulze (INFN Sezione   di Catania, Italy)