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| Paper: |
A Nearby Supernova Injected Short-lived Radionuclides into Our Protoplanetary Disk |
| Volume: |
341, Chondrites and the Protoplanetary Disk |
| Page: |
527 |
| Authors: |
Ouellette, N.; Desch, S.J.; Hester, J.J.; Leshin, L.A. |
| Abstract: |
Many sources have been suggested for the origin of the short-lived radionuclides in the early Solar System. The radionuclide 60Fe, recently confirmed in the early Solar System, must be injected into the disk, as it cannot be produced in situ. We discuss the "aerogel" model for this injection, in which a nearby supernova injects radioactive dust grains into an already-formed protoplanetary disk. We show that the predicted abundances of radionuclides are consistent with the meteoritic record if the supernova is ~ 0.3 pc away. We show that even a supernova this close will not destroy the disk. We show that the dust grains bearing the radionuclides are likely to enter the disk, will be stopped there (as in aerogel), and will probably also evaporate upon entry. |
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