Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: NGTS-10b: The shortest period hot Jupiter yet discovered   We report the discovery of a new ultra-short period transiting hot Jupiter
from the Next Generation Transit Survey (NGTS). NGTS-10b has a mass and radius
of $2.162\,^{+0.092}_{-0.107}$ M$_{\rm J}$ and $1.205\,^{+0.117}_{-0.083}$
R$_{\rm J}$ and orbits its host star with a period of $0.7668944\pm0.0000003$
days, making it the shortest period hot Jupiter yet discovered. The host is a
$10.4\pm2.5$ Gyr old K5V star ($T_\mathrm{eff}$=$4400\pm100$\,K) of Solar
metallicity ([Fe/H] = $-0.02\pm0.12$\,dex) showing moderate signs of stellar
activity. NGTS-10b joins a short list of ultra-short period Jupiters that are
prime candidates for the study of star-planet tidal interactions. NGTS-10b
orbits its host at just $1.46\pm0.18$ Roche radii, and we calculate a median
remaining inspiral time of $38$\,Myr and a potentially measurable transit time
shift of $7$\,seconds over the coming decade, assuming a stellar tidal quality
factor $Q'_{\rm s}=2\times10^{7}$.

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The categories of this paper are: dg-ga
2
The categories of this paper are: math
9
The categories of this paper are: nlin
26
The categories of this paper are: bayes-an
36
The categories of this paper are: cmp-lg
12
The categories of this paper are: nucl-th
15
The categories of this paper are: nucl-ex
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The categories of this paper are: chem-ph
16
The categories of this paper are: stat
10
The categories of this paper are: q-bio
7
The categories of this paper are: hep-th
3
The categories of this paper are: physics
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The categories of this paper are: q-fin
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The categories of this paper are: atom-ph
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The categories of this paper are: ao-sci
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The categories of this paper are: q-alg