Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Helium diffusion during the evolution of solar-type stars :
  asteroseismic tests   The element diffusion, described by Michaud (1970), is now recognized to
occur in all kinds of stars. We attempt to give evidence of signatures of
helium diffusion below the convective zone by the way of asteroseismology.

32
The categories of this paper are: atom-ph
24
The categories of this paper are: dg-ga
36
The categories of this paper are: cmp-lg
11
The categories of this paper are: hep-lat
37
The categories of this paper are: supr-con
17
The categories of this paper are: q-fin
34
The categories of this paper are: chem-ph
27
The categories of this paper are: comp-gas
2
The categories of this paper are: math
3
The categories of this paper are: physics
35
The categories of this paper are: mtrl-th
21
The categories of this paper are: adap-org
4
The categories of this paper are: cond-mat
26
The categories of this paper are: bayes-an
5
The categories of this paper are: gr-qc
9
The categories of this paper are: nlin