Transit Timing Variations Due To Negligible Planet-Planet Perturbations скачать в хорошем качестве

Transit Timing Variations Due To Negligible Planet-Planet Perturbations

Support this channel on Patreon: patreon.com/astrophil Join this channel to get access to perks:    / @astrophil2000   Welcome to this video where I discuss how variations in the timing of transits of exoplanets can be caused due to negligible planet-planet perturbations. The interval between each transit in a system with a single planet is constant and does not vary. The interval between consecutive transits in some cases, however, may vary. Some of these may result from apparent shifts or from real changes, such as an orbit that is tidally decaying. In a system with two planets, where the outer planet is the one transiting, the timing of the transits may appear either early or late. This phenomenon arises from the motion of the star around the barycenter, which is the common center of mass of the system. As the star orbits the barycenter, its position relative to the transiting planet changes. Consequently, the transiting planet completes more or less of its orbit before the transit happens, leading to either an earlier or later occurrence of the transit event.