PREDNASAJUCI / LECTURER :

Theodor Pribulla

NAZOV / TITLE :

Precession of the orbital planes and rotational axes in transiting exoplanets.

ABSTRAKT / ABSTRACT :

Fast rotation of exoplanet host stars causes their flattening and in misaligned
systems leads to precession of the orbital planes and rotational axes of planets.
Precession can be found by modelling of line profiles or broadening functions
during the transits but also from changing transit impact factor. In fast rotators
the gravity darkening enables to constrain the true orientation of the parent star
rotational axis. Modelling of three rapidly rotating parent stars (Kelt-17a,
Kelt-19Ab, and Kelt-21b) and their planets observed with the CHEOPS satellite
is presented. First results of a search for new misaligned or/and precessing
systems in the TESS photometry are given.