Observable Proxies For 26 Al Enhancement

Journal Article · Tue Jan 01 00:00:00 EST 2008 · The Astrophysical Journal

OSTI ID:960677

Fryer, Christopher L ^[1]; Young, Patrick A ^[1]; Ellinger, Carola I ^[2]; Arnett, William D ^[3]

---

1. Los Alamos National Laboratory
2. ASU
3. UNIV ARIZONA

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.

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC52-06NA25396
• OSTI ID: 960677
• Report Number(s): LA-UR-08-05875; LA-UR-08-5875; ASJOAB; TRN: US1002609
• Journal Information: The Astrophysical Journal, Journal Name: The Astrophysical Journal; ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTRONOMY AND ASTROPHYSICS
ALUMINIUM 26
NUCLEAR REACTIONS
NUCLEOSYNTHESIS
ABUNDANCE
STARS
SUPERNOVAE
SUPERNOVA REMNANTS