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The shocking development of lithium (and boron) in supernovae
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Schramm, David N. Truran Sr., James Dearborn, David S. P. Steigman, Gary |
| Copyright Year | 1989 |
| Description | It is shown that significant amounts of Li-7 and B-11 are produced in Type 2 supernovae. The synthesis of these rare elements occurs as the supernova shock traverses the base of the hydrogen envelope burning He-3 to masses 7 and 11 via alpha capture. The yields in this process are sufficient to account for the difference in lithium abundance observed between Pop 2 and Pop 1 stars. Since lithium (and boron) would, in this manner, be created in the same stars that produce the bulk of the heavy elements, the lithium abundance even in old Pop 1 stars would be high (as observed). The B-11 production may remedy the long-standing problem of the traditional spallation scenario to account for the observed isotopic ratio of boron. Observational consequences of this mechanism are discussed, including the evolution of lithium and boron isotope ratios in the Galaxy and the possible use of the boron yields to constrain the number of blue progenitor Type 2 supernovae. |
| File Size | 816743 |
| Page Count | 16 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19890013174 |
| Archival Resource Key | ark:/13960/t2f818273 |
| Language | English |
| Publisher Date | 1989-02-01 |
| Access Restriction | Open |
| Subject Keyword | Astrophysics Shock Heating Shock Waves Boron Supernovae Astronomical Models Spalling Cosmology Lithium Abundance Isotopes Cosmic Rays Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
