Extended Data Fig. 6: Observed photometric variations of 8 UMi.
From: A close-in giant planet escapes engulfment by its star
Time series photometry from (a) Hipparcos, (b) ASAS-SN, and (c) systematics-corrected TESS Simple Aperture Photometry. The standard deviation uncertainty for each photometric measurement is shown with error bars. These are visible for the Hipparcos data, but smaller than the symbol sizes for ASAS-SN and TESS data. The dispersion of the Hipparcos and ASAS-SN time series, σdisp, are quantified as a fraction of the star’s apparent magnitude. Generalized Lomb Scargle (GLS) periodograms for the (d) Hipparcos, (e) ASAS-SN, and (f) systematics-corrected TESS Simple Aperture Photometry light curves. The vertical dashed line indicates 8 UMi b’s orbital period, and the horizontal lines indicate the periodogram’s False Alarm Probability (FAP).
