On the source of the Al-26 observed in the interstellar medium

Abstract

Recent HEAO 3 observations have been interpreted by Mahoney and colleagues as requiring approximately 3 M_sun; of <SUP>26</SUP>Al alive in the interstellar medium. Calculations briefly discussed here indicate that there is substantial production and dispersal of <SUP>26</SUP>Al in the stellar winds of O and W-R stars and suggest that the stellar winds of very massive stars are a significant source of <SUP>26</SUP>Al.