Observable Proxies For 26 Al Enhancement

We consider the cospatial production of elements in supernova explosions to find observationally detectable proxies for enhancement of {sup 26}Al in supernova ejecta and stellar systems. Using four progenitors we explore a range of 1D explosions at different energies and an asymmetric 3D explosion....

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Bibliographic Details
Published in:The Astrophysical journal 2008-01
Main Authors: Fryer, Christopher L, Young, Patrick A, Ellinger, Carola I, Arnett, William D
Format: Article
Language:English
Subjects:
ABUNDANCE
ALUMINIUM 26
ASTRONOMY AND ASTROPHYSICS
NUCLEAR REACTIONS
NUCLEOSYNTHESIS
STARS
SUPERNOVA REMNANTS
SUPERNOVAE
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Summary:We consider the cospatial production of elements in supernova explosions to find observationally detectable proxies for enhancement of {sup 26}Al in supernova ejecta and stellar systems. Using four progenitors we explore a range of 1D explosions at different energies and an asymmetric 3D explosion. We find that the most reliable indicator of the presence of {sup 26}Al in unmixed ejecta is a very low S/Si ratio ({approx} 0.05). Production of N in O/S/Si-rich regions is also indicative. The biologically important element P is produced at its highest abundance in the same regions. Proxies should be detectable in supernova ejecta with high spatial resolution multi wavelength observations, but the small absolute abundance of material injected into a proto-planetary disk makes detection unlikely in existing or forming stellar/planetary systems.
ISSN:0004-637X
1538-4357