Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008newar..52..436v&link_type=abstract
New Astronomy Reviews, Volume 52, Issue 7-10, p. 436-439.
Astronomy and Astrophysics
Astronomy
1
97.10.Me, 98.20.Af
Scientific paper
The Orion region hosts one of the closest associations of recent massive-star formation. Measurements of the 1809 keV emission from this region by the COMPTEL observatory shows an interesting offset of the 26Al emission from the massive stars that are believed to be the source of the 26Al, and the emission appears rather extended. This suggests that the radioactive material flows from the stellar associations into the nearby Eridanus cavity, and this provides a unique possibility to study the properties of massive stars and their interactions with their surroundings, as well as the properties of the turbulent ISM in the vicinity of OB associations. We model this region with a population synthesis code, and take the geometry of the region into account. This study also bears on the larger theme of galactic chemo dynamics (GCD), as the winds and supernova ejecta of massive stars provide the essential chemical and energetic feedback mechanisms responsible for the formation and evolution of galaxies.
Diehl Roland
Hartmann Dieter H.
Kretschmer Karsten
Voss Rasmus
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