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The origin of 60Fe and other short-lived radionuclides in the early solar system

Published online by Cambridge University Press:  06 January 2010

T. Montmerle ,
D. Ehrenreich ,
A.-M. Lagrange ,
M. Gounelle  and
A. Meibom
M. Gounelle*
Affiliation:
Laboratoire d'Étude la Matière Extraterrestre, Muséum National d'Histoire Naturelle, 57 rue Cuvier, 75005 Paris, France
A. Meibom
Affiliation:
Laboratoire d'Étude la Matière Extraterrestre, Muséum National d'Histoire Naturelle, 57 rue Cuvier, 75005 Paris, France
*
gounelle@mnhn.fr
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Abstract

Establishing the origin of short-lived radionuclides (SLRs) with half-lives ≤100 Myr has important implications for the astrophysical context of our Sun's birth place. We review here the different origins proposed for the variety of SLRs present in the solar accretion disk 4.57 Ga ago. Special emphasis is given to an enhanced Galactic background origin for 60Fe which was inherited from several supernovae belonging to previous episodes of star formation, rather than from a nearby, contemporaneous supernova.

Type
Research Article
Information
European Astronomical Society Publications Series , Volume 41: Physics and Astrophysics of Planetary Systems , 2010 , pp. 301 - 311
Copyright
© EAS, EDP Sciences, 2010

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