Extended Data Fig. 5: Median four-planet Keplerian orbital model for Kepler-138.
From: Evidence for the volatile-rich composition of a 1.5-Earth-radius planet
A trained GP model was used to account for stellar activity in the RV fit. The model corresponding to the median retrieved parameters is plotted in purple while the corresponding parameters are annotated in each panel. We add in quadrature the RV jitter term (Supplementary Table 2) with the measurement uncertainties for all RVs. a, Full HIRES time series. b, Residuals to the best fit model. c, RVs phase-folded to the ephemeris of planet b. The phase-folded model for planet b is shown (purple line), while Keplerian orbital models for all other planets have been subtracted. d,e,f, Same as c for Kepler-138 c, d, and e.
