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HEAO 3 discovery of Al-26 in the interstellar medium
Abstract
A new analysis technique was used with HEAO 3 satellite gamma ray data to quantify the galactic 1809 keV emission. A method of bins was applied in summing for specific scan directions, followed by fitting the source and background components. The 1809 keV line of Al-26 was significant because of the recent discovery that Al-26 was overabundant in meteoritic material and implanted during solar system formation. The HEAO 3 flux indicated a current decay of 3 solar masses of Al-26 per year in the interstellar medium, possibly occurring in red giants and massive main sequence stars. The ratio of the observed Al-26 to the Al-27 flux was similar to that measured in meteorites, which suggests that the ratio is normal for the galactic medium and that no supernova triggered the protosolar nebular collapse.
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Citations
Cited by
The Large‐Scale Bipolar Wind in the Galactic Center
Bland‐Hawthorn, J., & Cohen, M. (2003) · The Astrophysical Journal · doi:10.1086/344573 · Cited by 301
Nollett, K. M., Busso, M., & Wasserburg, G. J. (2003) · The Astrophysical Journal · doi:10.1086/344817 · Cited by 258
26Al decay: Heat production and a revised age for Iapetus
Castillo-Rogez, J., Johnson, T. V., Lee, M. H., Turner, N. J., Matson, D. L., & Lunine, J. (2009) · Icarus · doi:10.1016/j.icarus.2009.07.025 · Cited by 111
IMPACT OF A REVISED 25 Mg( p , γ) 26 Al REACTION RATE ON THE OPERATION OF THE Mg-Al CYCLE
Straniero, O., Imbriani, G., Strieder, F., Bemmerer, D., Broggini, C., Caciolli, A., Corvisiero, P., Costantini, H., Cristallo, S., DiLeva, A., et al. (2013) · The Astrophysical Journal · doi:10.1088/0004-637x/763/2/100 · Cited by 62
Isotopic Adventures—Geological, Planetological, and Cosmic
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Metadata
- Authors
- Mahoney, W. A., Ling, J. C., Wheaton, W. A., & Jacobson, A. S.
- Venue
- The Astrophysical Journal
- Publisher
- American Astronomical Society
- Published
- 1984-11
- Volume
- 286
- Pages
- 578
- ISSN
- 0004-637X (ISSN-L)
- 1538-4357
- OpenAlex
- W2083566573
- Cited by
- 249
- References
- 0
- FWCI
- 8.15
- Type
- journal article
- Language
- en
- Open access
- closed
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- Mahoney, W. A., Ling, J. C., Wheaton, W. A., & Jacobson, A. S. (1984). HEAO 3 discovery of Al-26 in the interstellar medium. The Astrophysical Journal. https://doi.org/10.1086/162632
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