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Evolution of carbonaceous chondrite parent bodies: insights into cometary nuclei
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | McSween Jr., Harry Y. |
| Copyright Year | 1989 |
| Description | It is thought that cometary samples will comprise the most primitive materials that are able to be sampled. Although parent body alteration of such samples would not necessarily detract from scientists' interest in them, the possibility exists that modification processes may have affected cometary nuclei. Inferences about the kinds of modifications that might be encountered can be drawn from data on the evolution of carbonaceous chondrite parent bodies. Observations suggest that, of all the classes of chondrites, these meteorites are most applicable to the study of comets. If the proportion of possible internal heat sources such as Al-26 in cometary materials are similar to those in chondrites, and if the time scale of comet accretion was fast enough to permit incorporation of live radionuclides, comets might have had early thermal histories somewhat like those of carbonaceous chondrite parent bodies. |
| File Size | 171508 |
| Page Count | 2 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19900007322 |
| Archival Resource Key | ark:/13960/t8z944n7v |
| Language | English |
| Publisher Date | 1989-01-01 |
| Access Restriction | Open |
| Subject Keyword | Astrophysics Comets Heat Sources Meteorites Comet Nuclei Galactic Evolution Radioactive Isotopes Meteoritic Composition Carbonaceous Chondrites Chemical Composition Aluminum Isotopes Minerals Chemical Evolution Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
