(a) TESS light curve for approximately 4 h of V842 Cen from the observation of 20 s cadence data in sector 38. (b) TESS power spectra of V842 Cen from 20 s cadence data in sector 38, with the identified frequency marked by a dashed red line. The horizontal dashed green line represents the 99% confidence level. (c) and (d) Folded light curves of V842 Cen over periods of 3.555 h and 56.5 s, respectively, with a phase bin of 0.1.