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Galactic distribution of interstellar al-26
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Jacobson, A. S. Mahoney, W. A. Wheaton, W. A. Ling, J. C. Higdon, J. C. |
| Copyright Year | 1985 |
| Description | A narrow cosmic gamma ray line at 1809 keV was discovered which was interpreted as resulting from the decay of approximately 3 M sub theta of Al-26 residing in the galactic disk. While its intrinsic width was unresolved by the HEAO 3 spectrometer, a (1 sigma) limit of 3 keV FWHM was obtained; this corresponds to bulk motions of v 250 km/s, which is consistent with material at rest in the ISM. Sites which have been suggested include type II supernovae and massive stars which are members of the extreme population I, as well as novae and red giants which are associated with an older disk population. The HEAO 3 data was used to distinguish between these two stellar populations. |
| File Size | 231679 |
| Page Count | 4 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19850025689 |
| Archival Resource Key | ark:/13960/t9673b92t |
| Language | English |
| Publisher Date | 1985-08-01 |
| Access Restriction | Open |
| Subject Keyword | Space Radiation Gamma Rays Gamma Ray Spectrometers Radiation Distribution Stellar Mass Disk Galaxies Heao 3 Aluminum Isotopes Solar Maximum Mission Interstellar Matter Cosmic Rays Galactic Nuclei Half Life Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
