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2023AJ....165...82J - Astron. J., 165, 82 (2023/March-0)

Statistical Analysis of the Dearth of Super-eccentric Jupiters in the Kepler Sample.


Abstract (from CDS):

Hot Jupiters may have formed in situ, or been delivered to their observed short periods through one of two categories of migration mechanisms: disk migration or high-eccentricity migration. If hot Jupiters were delivered by high-eccentricity migration, we would expect to observe some “super-eccentric” Jupiters in the process of migrating. We update a prediction for the number of super-eccentric Jupiters we would expect to observe in the Kepler sample if all hot Jupiters migrated through high-eccentricity migration and estimate the true number observed by Kepler. We find that the observations fail to match the prediction from high-eccentricity migration with 94.3% confidence and show that high-eccentricity migration can account for at most ∼62% of the hot Jupiters discovered by Kepler.

Abstract Copyright: © 2023. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Transit photometry - Exoplanet migration - Exoplanets - Star-planet interactions - Exoplanet dynamics - Hot Jupiters

Simbad objects: 167

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