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Time-Scales of the s Process: from Minutes to Ages
F.
Käppeler A G,
S.
Bisterzo B,
R.
Gallino B,
M.
Heil C,
M.
Pignatari D E,
R.
Reifarth C,
O.
Straniero F,
S.
Walter A,
N.
Winckler C,
K.
Wisshak A
A
Forschungszentrum Karlsruhe, Institut für Kernphysik, P.O. Box 3640, D-76021 Karlsruhe, Germany
B
Dipartimento di Fisica Generale, Universitá di Torino, Via P. Giuria 1, I-10125 Torino, Italy
C
GSI Darmstadt, Planckstr. 1, D-64291 Darmstadt, Germany
D
Keele University, Keele, Staffordshire ST5 5BG, UK
E
Joint Institute for Nuclear Astrophysics, University of Notre Dame, Notre Dame, IN 46556, USA
F
Osservatorio Astronomico di Collurania, I-64100 Teramo, Italy
G
Corresponding author. Email: franz.kaeppeler@ik.fzk.de
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Publications of the Astronomical Society of Australia 26(3) 209–216 http://dx.doi.org/10.1071/AS08052
Submitted: 21 November 2008
Accepted: 22 December 2008
Published online: 4 September 2009
Abstract
The time scales in the s process appears to be an approriate aspect to discuss at the occasion of Roberto’s 70th anniversary, the more as this subject has been repeatedly addressed during the 20 years of collaboration between Torino and Karlsruhe. The two chronometers presented in this text were selected to illustrate the intense mutual stimulation of both groups. Based on a reliable set of accurate stellar (n, γ) cross sections determined mostly at FZK, the Torino group succeeded to develop a comprehensive picture of the various s-process scenarios, which are most valuable for understanding the composition of the solar system as well as for the interpretation of an increasing number of astronomical observations.
Keywords:
stars: AGB — nuclear reactions, nucleosynthesis, abundances — time
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