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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 8.

A source (TIC 353875094) where the shorter TESS-measured period of PTESS = 9.26 days is likely the correct rotation period instead of the ZTF-measured period of PZTF = 18.63 days. In the TESS periodogram we see that while there is a small peak at PZTF, the peak at PTESS is much stronger.

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