Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Gravity-Darkening Analysis of Misaligned Hot Jupiter MASCARA-4 b   MASCARA-4 b is a hot Jupiter in a highly-misaligned orbit around a
rapidly-rotating A3V star that was observed for 54 days by the Transiting
Exoplanet Survey Satellite (\tess). We perform two analyses of MASCARA-4 b
using a stellar gravity-darkened model. First, we measure MASCARA-4 b's
misaligned orbital configuration by modeling its \tess~photometric light curve.
We take advantage of the asymmetry in MASCARA-4 b's transit due to its host
star's gravity-darkened surface to measure MASCARA-4 b's true spin-orbit angle
to be $104^{\circ+7^\circ}_{-13^\circ}$. We also detect a $\sim4\sigma$
secondary eclipse at $0.491\pm0.007$ orbital phase, proving that the orbit is
slightly eccentric. Second, we model MASCARA-4 b's insolation including
gravity-darkening and find that the planet's received XUV flux varies by $4$\%
throughout its orbit. MASCARA-4 b's short-period, polar orbit suggests that the
planet likely underwent dramatic orbital evolution to end up in its present-day
configuration and that it receives a varying stellar irradiance that
perpetually forces the planet out of thermal equilibrium. These findings make
MASCARA-4 b an excellent target for follow-up characterization to better
understand orbital evolution and current-day of planets around high-mass stars.

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The categories of this paper are: hep-th
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The categories of this paper are: hep-lat
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The categories of this paper are: gr-qc
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The categories of this paper are: chem-ph
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The categories of this paper are: quant-ph
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The categories of this paper are: math-ph
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The categories of this paper are: hep-ph
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The categories of this paper are: dg-ga
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The categories of this paper are: q-fin
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The categories of this paper are: stat
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The categories of this paper are: adap-org
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The categories of this paper are: solv-int
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The categories of this paper are: q-alg
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The categories of this paper are: econ
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The categories of this paper are: cs
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The categories of this paper are: cmp-lg