In:
Science, American Association for the Advancement of Science (AAAS), Vol. 303, No. 5658 ( 2004-01-30), p. 649-652
Abstract:
The isotopic composition of ruthenium (Ru) in individual presolar silicon carbide (SiC) stardust grains bears the signature of s -process nucleosynthesis in asymptotic giant branch stars, plus an anomaly in 99 Ru that is explained by the in situ decay of technetium isotope 99 Tc in the grains. This finding, coupled with the observation of Tc spectral lines in certain stars, shows that the majority of presolar SiC grains come from low-mass asymptotic giant branch stars, and that the amount of 99 Tc produced in such stars is insufficient to have left a detectable 99 Ru anomaly in early solar system materials.
Type of Medium:
Online Resource
ISSN:
0036-8075
,
1095-9203
DOI:
10.1126/science.3030649
Language:
English
Publisher:
American Association for the Advancement of Science (AAAS)
Publication Date:
2004
detail.hit.zdb_id:
128410-1
detail.hit.zdb_id:
2066996-3
detail.hit.zdb_id:
2060783-0
SSG:
11
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