Abstract
Several types of pre-solar grains, grains that existed prior to solar system formation, have been found in the fine-grained components of primitive meteorites, interplanetary dust particles (IDPs), and comet samples. Known pre-solar components have isotopic compositions that reflect formation from the ejecta of evolved stars. Other pre-solar materials may have isotopic compositions very similar to solar system materials, making their identification as pre-solar grains problematic. Pre-solar materials exhibit a range of chemical and thermal resistance, so their relative abundances can be used to probe the conditions in the solar nebula. Detailed information on the relative abundances of pre-solar and solar-system materials can provide information on the temperatures, radiation environment, and degree of radial mixing in the early solar system.
Original language | English (US) |
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Pages (from-to) | 353-356 |
Number of pages | 4 |
Journal | Proceedings of the International Astronomical Union |
Volume | 2 |
Issue number | 14 |
DOIs | |
State | Published - Aug 2006 |
All Science Journal Classification (ASJC) codes
- Medicine (miscellaneous)
- Astronomy and Astrophysics
- Nutrition and Dietetics
- Public Health, Environmental and Occupational Health
- Space and Planetary Science
Keywords
- ISM: abundances
- ISM: dust
- Solar system: formation
- Spre-solar grains