Light curve and frequency spectrum of the TESS data of HD 133729. Top: half-day 2-min cadence TESS Sector 38 light curve of HD 133729. F_n stands for the relative flux F_i/⟨F⟩−1, where F_i is the TESS flux for the ith data point and ⟨F⟩ is average flux from all TESS observations in Sector 38. Bottom: frequency spectrum of the TESS Sector 38 data. In order to illustrate the occurrence of the ±0.043 d⁻¹ orbital sidelobes, the inset shows a 2 d⁻¹-wide frequency spectrum of the residuals in the vicinity of f_P = 44.487 d⁻¹, after subtracting f_P and its harmonics.