Astronomy and Astrophysics – Astrophysics
Scientific paper
May 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997aas...190.4903d&link_type=abstract
American Astronomical Society, 190th AAS Meeting, #49.03; Bulletin of the American Astronomical Society, Vol. 29, p.845
Astronomy and Astrophysics
Astrophysics
Scientific paper
(26) Al is ejected into the interstellar medium by a variety of candidate nucleosynthesis events, and can be detected from there through its radioactive-decay gamma-rays at 1809 keV. Different event types are expected to encript different spatial signatures into the apparent appearance of the 1809 keV sky, which reflects the integrated contributions to (26) Al production during the one-million year radioactive decay time. Several space instruments have detected the 1809 keV signal, and imaging data with a few degrees resolution are available from the COMPTEL telescope on the Compton observatory. With these data, (26) Al production sites in the Galaxy can be constrained, resulting in massive-star origin as most plausible source. This talk presents the expected signature of interstellar (26) Al, discussed the different observations and the significance of their constraints, and presents the astrophysical conclusions on the nature of (26) Al sources in the Galaxy.
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