Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: $\beta$ Cephei Pulsations in the High-mass Eclipsing System CW Cephei   CW Cep is an early B-type eclipsing binary with mass measurement precisions
better than 1 \%. We report the discovery of pulsation signatures in the TESS
time-series data of the system observed during Sectors 17 and 18. Our binary
modeling indicates that the target star is a partially-eclipsing detached
system with masses of 12.95 $M_\odot$ and 11.88 $M_\odot$ and radii of 5.52
$R_\odot$ and 5.09 $R_\odot$ in an eccentric orbit of $e$ = 0.0305. The
distance to the eclipsing system, 928 $\pm$ 36 pc, is much more precise than
the Gaia distance of 962 $\pm$ 453 pc. Applying multifrequency analyses to the
residual light curve in the outside-eclipse part, we detected 13 significant
signals in two frequency regions. Six frequencies below 1 day$^{-1}$ appeared
to be mostly orbital harmonic and combination terms, or sidelobes due to
insufficient removal of the binary effects. In contrast, seven frequencies
clustered around 2.73 day$^{-1}$ and 5.34 day$^{-1}$ could be considered
$\beta$ Cep-type pulsations. Our results represent the second discovery of
$\beta$ Cep pulsations present in double-lined eclipsing binaries with precise
masses and, hence, CW Cep serves as an important test-bed for the asteroseismic
modeling of high-mass stars.

17
The categories of this paper are: q-fin
34
The categories of this paper are: chem-ph
30
The categories of this paper are: q-alg
35
The categories of this paper are: mtrl-th
22
The categories of this paper are: chao-dyn
8
The categories of this paper are: hep-ex
33
The categories of this paper are: plasm-ph
13
The categories of this paper are: quant-ph
12
The categories of this paper are: nucl-th
37
The categories of this paper are: supr-con
11
The categories of this paper are: hep-lat
5
The categories of this paper are: gr-qc
18
The categories of this paper are: econ
21
The categories of this paper are: adap-org
7
The categories of this paper are: hep-th
28
The categories of this paper are: alg-geom