On the Origin of Galactic 26Al

Details On the Origin of Galactic 26Al On the Origin of Galactic 26Al

1999-02-19

arxiv.org/abs/astro-ph/9902281v1

Astronomy and Astrophysics

Astrophysics

4 pages, 2 figures, Proc. of the 3rd INTEGRAL workshop, Taormina

Scientific paper

The comparison of COMPTEL 1.8 MeV gamma-ray line data to an extended data base of tracer maps revealed an extremely close correlation between 1.8 MeV gamma-ray line emission on the one side and 53 GHz microwave free-free emission and 158 um far-infrared line emission on the other side (Knodlseder et al., these proceedings). We demonstrate that the two tracer maps are correlated to the extreme Population I, tracing the distribution of very massive stars in the Galaxy. This strongly suggests that these stars are also the dominant source of galactic 26Al, making Wolf-Rayet stars and/or core collapse supernovae the primary candidates.

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