This requires that the production of the heavy r-nuclei not occur in supernovae with extended shell structure, but be associated with either bare neutron stars or SNe II in the range of 8-10 solar masses. Principles of Stellar Evolution and Nucleosynthesis.
Freiburghaus,.; Rosswog,.; Thielemann,.-K (1999). Tanvir,.;. Hadley Wickham's description of vignettes says to set eval false as the chunk option.