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Radioactive ²⁶Al from massive stars in the Galaxy

Wang, Wei; Knödlseder, Jürgen; Winkler, Christoph +13 more

Gamma-rays from radioactive ²⁶Al (half-life ~7.2 × 10⁵years) provide a `snapshot' view of continuing nucleosynthesis in the Galaxy. The Galaxy is relatively transparent to such γ-rays, and emission has been found concentrated along its plane. This led to the conclusion that massive stars throughout the Galaxy dominate the pro…