A Nearby Supernova Injected Short-lived Radionuclides into Our Protoplanetary Disk

Details A Nearby Supernova Injected Short-lived Radionuclides into Our Protoplanetary Disk A Nearby Supernova Injected Short-lived Radionuclides into Our Protoplanetary Disk

Dec 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aspc..341..527o&link_type=abstract

Chondrites and the Protoplanetary Disk, ASP Conference Series, Vol. 341, Proceedings of a workshop held 8-11 November 2004 in Ka

Astronomy and Astrophysics

Astronomy

24

Scientific paper

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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