Radioactive and kinematic tracers of feedback from massive stars
Voss, R.
Original · EN
The mixing of ejecta from young stars into the interstellar medium is an important process in the interplay between star formation and galaxy evolution. A unique window into these processes is provided by the radioactive isotopes ²⁶Al, traced by its γ-ray decay lines at 1.8 MeV. With a mean lifetime of 1 Myr it is a long-term tracer of nucleosynthesis for massive stars. Our population synthesis code models the ejection of ²⁶Al, together with the ⁶⁰Fe, the kinetic energy and UV radiation for a population of massive stars. We have applied the code to study the nearby Orion region and the more massive Carina region and found good agreement with observational constraints.
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