Parent Stars of Extrasolar Planets. XV. Host Star Rotation Revisited with {\it Kepler} Data
arXiv:1504.05423 · doi:10.1093/mnras/stv907
Abstract
We employed published rotation periods of {\it Kepler} field stars to test whether stars hosting planets tend to rotate more slowly than stars without known planets. Spectroscopic vsini observations of nearby stars with planets have indicated that they tend to have smaller visni values. We employ data for {\it Kepler} Objects of Interest (KOIs) from the first 16 quarters of its original mission; stellar parameters are based on the analysis of the first 17 quarters. We confirm that KOI stars rotate more slowly with much greater confidence than we had previously found for nearby stars with planets. Furthermore, we find that stars with planets of all types rotate more slowly, not just stars with giant planets.
7 pages, 5 figures; accepted for publication in MNRAS
References in corpus (7)
- A spin-down clock for cool stars from observations of a 2.5-billion-year-old cluster
- Lithium depletion and the rotational history of exoplanet host stars
- Photometric Amplitude Distribution of Stellar Rotation of Kepler KOIs-Indication for Spin-Orbit Alignment of Cool Stars and High Obliquity for Hot Stars
- Li abundances in F stars: planets, rotation and galactic evolution
- Parent Stars of Extrasolar Planets. IX. Lithium Abundances
- Parent Stars of Extrasolar Planets - XIV. Strong Evidence of Li Abundance Deficit
- Exoplanet hosts reveal lithium depletion: Results from a homogeneous statistical analysis