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Constraints on AGB models from the heavy-element composition of presolar SiC grains
M. Lugaro, A. M. Davis, R. Gallino +2
Presolar SiC grains formed around Asymptotic Giant Branch (AGB) stars during their carbon-rich phase and contain heavy elements in trace amounts showing the signature of the slow n…
Could SiC A+B grains have originated in a post-AGB thermal pulse?
Falk Herwig, Sachiko Amari, Maria Lugaro +1
The carbon and nitrogen isotopic ratios of pre-solar SiC grains of type A+B suggest a proton-limited nucleosynthetic process as encountered, for instance, during the very late ther…
s-process nucleosynthesis of 142^Nd: crisis of the classical model
C. Arlandini, F. Kaeppeler, K. Wisshak +4
The recently improved information on the stellar neutron capture cross sections of neutron magic nuclei at N = 82, and in particular for 142^Nd, turned out to represent a sensitive…
A New Astrophysical Interpretation of the Si and Ti Isotopic Compositions of Mainstream SiC Grains from Primitive Meteorites
Maria Lugaro, Roberto Gallino, Maurizio Busso +2
Mainstream presolar SiC grains from primitive meteorites show a clear s-process signature in the isotopic composition of heavy trace elements. These grains most likely condensed in…