Exoplanet Detection: Transit Timing Variations Due To Parallax скачать в хорошем качестве

Exoplanet Detection: Transit Timing Variations Due To Parallax

Join this channel to get access to perks:    / @astrophil2000   Support this channel on Patreon: patreon.com/astrophil Welcome to this video where I discuss how parallax can alter the apparent timing between successive transits of a transiting exoplanet. The interval between each transit in a system with a single planet is constant and does not vary. The interval between consecutive transits, however, may vary. Some of these may result from apparent shifts or from real changes, such as an orbit that is tidally decaying. Parallax, or the observed displacement of a star due to a shift in the observer's point of view, is the source of one of the apparent changes, which occurs due to Earth's orbit around the Sun. The exoplanet appears to transit a little bit sooner or later than we would anticipate based on its orbital period because parallax alters the host star's viewing angle. Because of the increased parallax angle, this impact is more noticeable for exoplanets that are closer.