Small planets transiting A-type stars with TESS

However, these missions observed too few stars with earlier spectral types to tightly constrain the occurrence rates of planets orbiting hotter stars. Using TESS, we calculate the occurrence rate of small(1R_{Earth}_<R_p_<8R_{Earth}_), close-in (P_orb_<10d) planets orbiting A-type stars for the first time.

We search a sample of 20,257 bright (6<T<10) A-type stars for transiting planets using a custom pipeline and vet the detected signals, finding no reliable small planets. We characterize the pipeline completeness using injection-recovery tests and determine the 3{sigma} upper limits of the occurrence rates of close-in sub-Saturns (4R_{Earth}_<R_p_<8R_{Earth}_), sub-Neptunes (2R_{Earth}_<R_p_<4R_{Earth}_), and super-Earths (1R_{Earth}_<R_p_<2R_{Earth}_).