Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The California-Kepler Survey. VI: Kepler Multis and Singles Have Similar
  Planet and Stellar Properties Indicating a Common Origin   The California-Kepler Survey (CKS) catalog contains precise stellar and
planetary properties for the \Kepler\ planet candidates, including systems with
multiple detected transiting planets ("multis") and systems with just one
detected transiting planet ("singles," although additional planets could
exist). We compared the stellar and planetary properties of the multis and
singles in a homogenous subset of the full CKS-Gaia catalog. We found that
sub-Neptune sized singles and multis do not differ in their stellar properties
or planet radii. In particular: (1.) The distributions of stellar properties
$M_\star$, [Fe/H], and $v\mathrm{sin}i$ for the Kepler sub Neptune-sized
singles and multis are statistically indistinguishable. (2.) The radius
distributions of the sub-Neptune sized singles and multis with $P > 3$ days are
indistinguishable, and both have a valley at $\sim1.8~R_\oplus$. However, there
are significantly more detected short-period ($P < 3$ days), sub-Neptune sized
singles than multis. The similarity of the host star properties, planet radii,
and radius valley for singles and multis suggests a common origin. The similar
radius valley, which is likely sculpted by photo-evaporation from the host star
within the first 100 Myr, suggests that planets in both singles and multis
spend much of the first 100 Myr near their present, close-in locations. One
explanation that is consistent with the similar fundamental properties of
singles and multis is that many of the singles are members of multi-planet
systems that underwent planet-planet scattering.

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The categories of this paper are: comp-gas
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The categories of this paper are: math
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The categories of this paper are: hep-ex
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The categories of this paper are: alg-geom
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The categories of this paper are: patt-sol
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The categories of this paper are: nucl-ex
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The categories of this paper are: physics
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The categories of this paper are: hep-th
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The categories of this paper are: plasm-ph
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The categories of this paper are: supr-con
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The categories of this paper are: adap-org
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The categories of this paper are: eess
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The categories of this paper are: mtrl-th
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The categories of this paper are: math-ph
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The categories of this paper are: bayes-an
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The categories of this paper are: chem-ph