Bonn 2010 – wissenschaftliches Programm

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EP: Fachverband Extraterrestrische Physik

EP 11: Exoplanets

EP 11.4: Vortrag

Mittwoch, 17. März 2010, 16:00–16:15, AKM

Gravitational Perturbations in Exoplanetary Systems — •Szilard Csizmadia1 and CEST Team21DLR, Intitut für Planetenforschung — 2-

Studying exoplanets is a very new research field of astrophysics. The sequence of discoveries started only in 1995 and more than 400 planets were discovered around other stars than the Sun in the last 15 years. Most of these exoplanets is known to be lonely planet around its host star, but few real planetary systems are also known. It is believed that there are more planets and small bodies in every system just we did not detected those planets.

To find additional objects in the systems, one promising technique is the so-called transit timing variation method which measures the tiny orbital period changes of a transiting exoplanets and it tries to reconstruct the origin of these period chhanges. Note that Neptune was discovered by a similar way.

Here I summarize the types of gravitational perturbations in a planetary system, the role of Kozai-resonance in the formation and evolution of the systems. I also present our results about the transiting exoplanet CoRoT-1b.

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