Published August 15, 1983 | Version v1
Journal article

Discovery of s-process Nd in Allende residue

Creators

  • 1. Department of Space Physics and Astronomy, Rice University

Description

New interpretation is given to the isotopic anomalie detected by Lugmair et al. in an acid-resistant residue of the Allende meteorite. If the the 142Nd excess is due to 146Sm decay, as the discoverers proposed, I argue that the decay has occurred in interstellar grains, so that the concludion that 146Sm(1.03 x 108 yr) was alive in the solar system is premature. I show by renormalizing their data that the discovery is likely to be s-process Nd, confirming the survival of red-giang stardust in carbonaceous interstellar dust

Additional details

Publishing Information

Journal Title
Astrophys. J., Lett. Ed.
Journal Volume
271
Journal Issue
2
Series
Astrophys. J., Lett. Ed.
Journal Page Range
L107-L109
ISSN
0571-7248

INIS

Country of Publication
United States
Country of Input or Organization
United States
INIS RN
15023430
Subject category
S79: ASTROPHYSICS, COSMOLOGY AND ASTRONOMY;
Descriptors DEI
CHEMICAL COMPOSITION; INTERSTELLAR GRAINS; ISOTOPE RATIO; METEORITES; NEODYMIUM; NEODYMIUM ISOTOPES; NUCLEOSYNTHESIS; S PROCESS; SAMARIUM; SAMARIUM ISOTOPES; SOLAR SYSTEM
Descriptors DEC
ELEMENTS; METALS; PARTICLES; RARE EARTHS; STAR EVOLUTION; SYNTHESIS