Institute of Astronomy

Dynamics and observational prospects of co-orbital planets in double stars

SpeakerTalk DateTalk Series
Richard Schwarz28 July 2014Across HR 2014 Posters


In the quest for new exoplanets close, eclipsing binaries are promising candidates because many lie in the CoRoT and Kepler discovery space. In general we distinguish three dynamical types of motion for extra-solar planets in binary star systems:(i) S-Type: A planet orbits one of the two stars. (ii) P-Type: A planet stays in an orbit around both stars. (iii) T-Type: A planet may orbit close to one of the equilibrium points L4 or L5. Our work is dedicated to the dynamics and the theory of observations of planets in T-Type configurations in binary star systems. With the help of stability studies we want to identify regions in the orbital parameter space where possible Trojan planets can have stable orbits and may be observed. This will be realized via investigations of eclipse timing variations (ETV). With the ETVs we will show whether it is possible to detect planet induced perturbations in the transit signal of the secondary star.