Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Actinides: How well do we know their stellar production?   The reliable evaluation of the r-process production of the actinides and
careful estimates of the uncertainties affecting these predictions are key
ingredients especially in nucleo-cosmochronology studies based on the analysis
of very metal-poor stars or on the composition of meteorites. This type of
information is also required in order to make the best possible use of future
high precision data on the actinide composition of galactic cosmic rays, of the
local interstellar medium, or of meteoritic grains of presumed circumstellar
origin. This paper provides the practitioners in these various fields with the
most detailed and careful analysis of the r-process actinide production
available to-date. In total, thirty-two different multi-event canonical
calculations using different nuclear ingredients or astrophysics conditions are
presented, and are considered to give a fair picture of the level of
reliability of the predictions of the actinide production, at least in the
framework of a simple r-process model. This simplicity is imposed by our
inability to identify the proper astrophysical sites for the r-process.
Constraints on the actinide yield predictions and associated uncertainties are
suggested on grounds of the measured abundances of r-nuclides, including Th and
U, in the star CS 31082-001, and under the critical and questionable assumption
of the `universality' of the r-process. We also define alternative constraints
based on the nucleo-cosmochronological results derived from the present
actinide content of meteorites. Implications to the different above-cited
fields, and in particular nucleo-cosmochronometry are discussed.

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The categories of this paper are: adap-org
36
The categories of this paper are: cmp-lg
13
The categories of this paper are: quant-ph
24
The categories of this paper are: dg-ga
27
The categories of this paper are: comp-gas
14
The categories of this paper are: math-ph
33
The categories of this paper are: plasm-ph
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The categories of this paper are: q-fin
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The categories of this paper are: patt-sol
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The categories of this paper are: funct-an
37
The categories of this paper are: supr-con
2
The categories of this paper are: math
5
The categories of this paper are: gr-qc
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The categories of this paper are: eess
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The categories of this paper are: bayes-an
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The categories of this paper are: q-bio