Fig. 12. Posterior PDFs for the 1.809 MeV gamma-ray flux from the decay of radioactive ²⁶Al (left) and the equivalent O7 V star ²⁶Al yield (right). The solid lines show the results for an age of Myr, the dashed line has been calculated for an age uncertainty of 5-15 Myr. A distance of kpc has been assumed for the association.