The Roman Space Telescope Galactic Bulge Time Domain Survey (GBTDS) is
expected to detect ~10^5 transiting planets. Many of these planets will have
short orbital periods and are thus susceptible to tidal decay. We use a catalog
of simulated transiting planet detections to predict the yield of orbital decay
detections in the Roman GBTDS. Assuming a constant stellar tidal dissipation
factor, Q^{‘}_{*}, of 10^6, we predict ~ 5 – 10 detections. We additionally
consider an empirical period-dependent parameterization of Q^{‘}_{*} \propto
P^{-3} and find a substantially suppressed yield. We conclude that Roman will
provide constraints on the rate of planet engulfment in the Galaxy and probe
the physics of tidal dissipation in stars.

Questo articolo esplora i giri e le loro implicazioni.

Scarica PDF: