Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Pulsations driven by the $\epsilon$-mechanism in post-merger remnants:
  first results   Helium-rich subdwarfs are a rare subclass of hot subdwarf stars which
constitute a small and inhomogeneous group showing varying degrees of helium
enrichment. Only one star, LS IV $^\circ$14 116 has been found to show
multiperiodic luminosity variations. The variability of LS IV $^\circ$14 116
has been explained as the consequence of nonradial g-mode oscillations, whose
excitation is difficult to understand within the frame of the standard
$\kappa$-mechanism driving pulsations in sdBV stars. In a recent study, we have
proposed that the pulsations of LS IV $^\circ$14 116 might be driven through
the $\epsilon$-mechanism acting in unstable He-burning zones in the interior of
the star, that appear before the quiescent He-burning phase. One of the few
accepted scenarios for the formation of He-rich subdwarfs is the merger of two
He-core white dwarfs. As part of this project, we present a study of the
$\epsilon$-mechanism in post-merger remnants, and discuss the results in the
light of the pulsations exhibited by LS IV $^\circ$14 116.

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The categories of this paper are: q-alg
17
The categories of this paper are: q-fin
10
The categories of this paper are: q-bio
31
The categories of this paper are: ao-sci
27
The categories of this paper are: comp-gas
15
The categories of this paper are: nucl-ex
8
The categories of this paper are: hep-ex
28
The categories of this paper are: alg-geom
2
The categories of this paper are: math
12
The categories of this paper are: nucl-th
9
The categories of this paper are: nlin
37
The categories of this paper are: supr-con
26
The categories of this paper are: bayes-an
3
The categories of this paper are: physics
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The categories of this paper are: solv-int
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The categories of this paper are: eess