Measuring 26Al and 60Fe in the Galaxy
arXiv:astro-ph/0603669 · doi:10.1016/j.newar.2006.06.082
Abstract
With the SPI high-resolution spectrometer on INTEGRAL, new results have been obtained for long-lived radioactive 26Al and 60Fe in our Galaxy: 26Al sources apparently share the pattern of Galactic rotation in the inner Galaxy, and thus allow to estimate a total mass of 26Al in the Galaxy of 2.8 M_sol from the measured flux. 60Fe production in massive stars is constrained by recent gamma-ray detections, and appears to be lower than predicted by standard models. We show the broader implications of these findings both for the study of our Galaxy, and for nucleosynthesis in massive stars.
7 pages, 7 figures; accepted for publication in NewAstronomyReviews; presented at "Astronomy with Radioactivities V" conference, Clemson, SC (USA) Sep 2005
References in corpus (8)
- Radioactive 26Al and massive stars in the Galaxy
- SPI/INTEGRAL in-flight performance
- 26Al and 60Fe From Supernova Explosions
- Detection of gamma-ray lines from interstellar 60Fe by the high resolution spectrometer SPI
- Radioactive Al26 and Fe60 in the Milky Way: implications of the RHESSI detection of Fe60
- The Reuven Ramaty High Energy Solar Spectroscopic Imager observation of the 1809 keV line from Galactic 26Al
- 26Al in the inner Galaxy
- SPI Measurements of Galactic 26Al
Cited by in corpus (9)
- Evolution, nucleosynthesis and yields of low mass AGB stars
- Super and Massive AGB Stars: II - Nucleosynthesis and Yields - Z=0.02, 0.008 and 0.004
- Al-26 and the formation of the Solar System from a molecular cloud contaminated by Wolf-Rayet winds
- Carbon-rich presolar grains from massive stars. Subsolar 12C/13C and 14N/15N ratios and the mystery of 15N
- The Supernova Triggered Formation and Enrichment of Our Solar System
- Gamma-ray Astrophysics in the MeV Range: the ASTROGAM Concept and Beyond
- Simulating Anisotropic Thermal Conduction in Supernova Remnants, Implications for the Interstellar Medium
- Reaction rate uncertainties and 26Al in AGB silicon carbide stardust
- Cosmic Radioactivity and Galactic Chemical Evolution