Pulsations to the rescue! TIC47377536 (PG1047+003) might harbor a planet

Subdwarf B (sdB) stars are post-main-sequence stars of high temperature (22,000 to 40,000 K) and gravity (log g = 5.0 to 6.2). Their formation and evolution are still not well understood but the most promising formation he most promising formation scenarios involve close binary star evolution.
Approximately 30% of sdB stars show stable pulsations and we can use the pulsation timings to search for the existence and orbital solutions of the sdB binary systems. We used both TESS data and ground observation data using SARA-KP and SARA-RM telescopes to search for the orbital solutions of sdB stars using this pulsation timing method. In this paper, we discuss the pulsation timing variation of a TIC 0047377536.