(a)–(d) LS periodogram and phased light curve of the targets with unique nondetections for which the literature does not contain sufficient information for phase calculation (except HD 130507). The periods are selected from the LS periodogram. All the phased light curves are binned with Δϕ_rot = 0.005. The red curves in the bottom panels represent the fitted light curves. (e)–(h) LS periodogram and phased light curve of the unique detections (except HD 142184). For the first three stars, the first harmonic is also fitted along with their corresponding best frequencies. Only HD 37742 does not give the rotation frequency as the best frequency.