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Young, P; Ellinger, CI; Timmes, FX; Arnett, D; Fryer, CL; Rockefeller, G; Hungerford, A; Diehl, S; Bennett, M; Hirschi, R; Pignatari, M; Herwig, F; Magkotsios, G (2008)
Languages: English
Types: Unknown
Subjects: QB, QC, Astrophysics
We examine observed heavy element abundances in the Cassiopeia A supernova remnant as a constraint on the nature of the Cas A supernova. We compare bulk abundances from 1D and 3D explosion models and spatial distribution of elements in 3D models with those derived from X-ray observations. We also examine the cospatial production of 26Al with other species. We find that the most reliable indicator of the presence of 26Al in unmixed ejecta is a very low S/Si ratio (~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 multiwavelength observations.
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