Image Details
Caption: Figure 14.
O − C diagram for HAT-P-18 b. Top: the O − C diagram with the gray dashed line denotes the best-fit linear ephemeris, the blue curve shows the fitted sine model, and the annotated value gives the measured amplitude ATTV. Data points are color coded by source. Bottom: the residuals from the best-fit sine model and the observed data.
© 2026. The Author(s). Published by the American Astronomical Society.