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Measuring Long Stellar Rotation Periods (>10 days) from TESS FFI Light Curves is Possible: An Investigation Using TESS and ZTF

  • Authors: Soichiro Hattori, Ruth Angus, Daniel Foreman-Mackey, Yuxi (Lucy) Lu, Isabel Colman

Soichiro Hattori et al 2025 The Astronomical Journal 170 .

  • Provider: AAS Journals

Caption: Figure 1.

The ZTF r and g band light curves and the period analysis for TIC 198459831. In the top panel we show the r- and g-band light curves. The middle panel shows the same light curves but zooms into the shaded region between 59,400 and 59,500 days. The bottom-left panel shows the LS periodogram over the range of 2–100 days. In the bottom right panel we show the phase-folded light curve, folded at the period with the highest LS power, and overlay the sinusoidal model at this period. We also indicate A, the semiamplitude of the oscillation.

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