Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The ages of (the oldest) stars   Much progress has been achieved in the age-dating of old stellar systems, and
even of individual stars in the field, in the more than sixty years since the
evolution of low-mass stars was first correctly described. In this paper, I
provide an overview of some of the main methods that have been used in this
context, and discuss some of the issues that still affect the determination of
accurate ages for the oldest stars.

26
The categories of this paper are: bayes-an
18
The categories of this paper are: econ
35
The categories of this paper are: mtrl-th
15
The categories of this paper are: nucl-ex
5
The categories of this paper are: gr-qc
10
The categories of this paper are: q-bio
33
The categories of this paper are: plasm-ph
13
The categories of this paper are: quant-ph
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The categories of this paper are: funct-an
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The categories of this paper are: cmp-lg
1
The categories of this paper are: cs
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The categories of this paper are: chao-dyn
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The categories of this paper are: hep-th
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The categories of this paper are: dg-ga
9
The categories of this paper are: nlin
25
The categories of this paper are: patt-sol