Kepler light curves and stellar rotational periods
Timo Reinhold, Ansgar Reiners, Gibor Basri, and Lucianne M. Walkowicz
TL;DR
This paper analyzes Kepler light curves to determine stellar rotational periods for 306 exoplanet candidate host stars, providing insights into stellar activity and variability using Lomb-Scargle periodograms.
Contribution
It introduces a method to identify stellar rotation periods from Kepler data and offers initial statistics on stellar activity for a specific star sample.
Findings
Many stars show periodic variability
Preliminary rotation periods are estimated
Initial data on stellar activity levels
Abstract
The Kepler space telescope monitors over 156.000 stars with an unprecedented photometric precision. We are interested in stellar rotational periods which we find using Lomb-Scargle periodograms. This work focuses on the 306 exoplanet candidate host stars released on June 15, 2010. We present statistics on how many of them show periodic photometric variability, providing preliminary periods and estimates of stellar activity. In the future, our work will focus on spot evolution and differential rotation.
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Taxonomy
TopicsAstronomy and Astrophysical Research · Stellar, planetary, and galactic studies · Astronomical Observations and Instrumentation