Indeed; Yggdrasil is also the name of a set of models of the emission from stellar populations: https://www.astro.uu.se/~ez/yggdrasil/ReadMe.txt https://www.as

Indeed; Yggdrasil is also the name of a set of models of the emission from stellar populations: https://www.astro.uu.se/~ez/yggdrasil/ReadMe.txt https://www.astro.uu.se/~ez/yggdrasil/ReadMe.txt https://www.astro.uu.se/~ez/yggdrasil/yggdrasil.html https://www.astro.uu.se/~ez/yggdrasil/yggdrasil.html