Rotational Period Measurement of Planet Host HD 147379
Joshua Pepper
TL;DR
This study confirms the star HD 147379's rotational period as approximately 22 days by analyzing KELT light curve data, supporting previous radial velocity findings of stellar rotation.
Contribution
It provides the first independent photometric measurement of HD 147379's rotational period, validating earlier radial velocity-based estimates.
Findings
Detected a 22.0064-day periodic signal in the star's light curve.
Supports the interpretation of stellar rotational variability.
Confirms previous radial velocity findings.
Abstract
The star HD 147379 was recently announced as a host of a low-mass exoplanet by Reiners et al. (2017). That announcement included a discussion of the possible detection of a periodic signal in the radial velocity observations around 21.1 days, which was interpreted as rotational variability of the star. We have examined the light curve of this star as observed by the KELT transit survey, and we find a significant periodic signal in the light curve of 22.0064 days, supporting the interpretation of Reiners et al. (2017) of the rotational variation of the star.
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