Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Nucleosynthesis in Metal-Free and Metal-Poor Stars   There have been a number of important recent developments in theoretical and
observational studies of nucleosynthesis, especially regarding nucleosynthetic
sources at low metallicities. Those selected for discussion here include the
origin of Li6, the primary production of N, the s-process, and the supernova
sources for three groups of metals: (1) C to Zn with mass numbers A<70, (2) Sr
to Ag with A~90-110, and (3) r-process nuclei with A~130 and above.

17
The categories of this paper are: q-fin
34
The categories of this paper are: chem-ph
5
The categories of this paper are: gr-qc
36
The categories of this paper are: cmp-lg
19
The categories of this paper are: eess
35
The categories of this paper are: mtrl-th
7
The categories of this paper are: hep-th
37
The categories of this paper are: supr-con
1
The categories of this paper are: cs
31
The categories of this paper are: ao-sci
13
The categories of this paper are: quant-ph
29
The categories of this paper are: funct-an
28
The categories of this paper are: alg-geom
27
The categories of this paper are: comp-gas
12
The categories of this paper are: nucl-th
24
The categories of this paper are: dg-ga