Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: 44 Tau: Discrimination between MS and post-MS models   For the Delta Scuti star 44 Tau 13 independent frequencies have been detected
in previous studies. This star is unusual among the Delta Scuti stars because
of its very low v sin i value of 2 +/- 1 km/s, indicating that it is either an
extremely slow rotator or seen pole-on. 44 Tau shows unusually high amplitudes
for a typical nonradially pulsating Delta Scuti star and is believed to be a
connecting link between the high-amplitude Delta Scuti stars (HADS) and the
low-amplitude Delta Scuti stars. We performed an asteroseimic study to find the
appropriate theoretical model for this star. The fact that the radial
fundamental and first overtone frequencies have been identified allows for
reducing the number of possible solutions significantly. Standard post-main
sequence models with inefficient convection in the envelope seem to be
preferable in comparison with various models on the main sequence. They fit
both observed global parameters of 44 Tau and most of identified radial and
nonradial frequencies.

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The categories of this paper are: physics
37
The categories of this paper are: supr-con
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The categories of this paper are: cs
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The categories of this paper are: q-bio
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The categories of this paper are: nlin
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The categories of this paper are: chem-ph
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The categories of this paper are: dg-ga
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The categories of this paper are: acc-phys
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The categories of this paper are: gr-qc
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The categories of this paper are: patt-sol
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The categories of this paper are: cmp-lg
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The categories of this paper are: hep-th
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The categories of this paper are: hep-ph
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The categories of this paper are: math-ph
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The categories of this paper are: q-alg
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The categories of this paper are: math