Searching for transit timing variations in transiting exoplanet systems

Details Searching for transit timing variations in transiting exoplanet systems Searching for transit timing variations in transiting exoplanet systems

2008-07-07

arxiv.org/abs/0807.1000v1

Astronomy and Astrophysics

Astrophysics

To appear in the Proceedings of the 253rd IAU Symposium: "Transiting Planets", May 2008, Cambridge, MA. 4 pages, 3 figures, 1

Scientific paper

10.1017/S1743921308026896

Searching for transit timing variations in the known transiting exoplanet systems can reveal the presence of other bodies in the system. Here we report such searches for two transiting exoplanet systems, TrES-1 and WASP-2. Their new transits were observed with the 4.2m William Herschel Telescope located on La Palma, Spain. In a continuing programme, three consecutive transits were observed for TrES-1, and one for WASP-2 during September 2007. We used the Markov Chain Monte Carlo simulations to derive transit times and their uncertainties. The resulting transit times are consistent with the most recent ephemerides and no conclusive proof of additional bodies in either system was found.

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