Publication details

Transit timing variation and activity in the WASP-10 planetary system

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Authors

MACIEJEWSKI G. DIMITROV D. NEUHÄUSER R. TETZLAFF N. NIEDZIELSKI A. RAETZ St. CHEN W.P. WALTER F. MARKA C. BAAR S. KREJČOVÁ Tereza BUDAJ Ján KRUSHEVSKA V. TACHIHARA K. TAKAHASHI H. MUGRAUER M.

Year of publication 2011
Type Article in Periodical
Magazine / Source Monthly Notices of the Royal Astronomical Society
MU Faculty or unit

Faculty of Science

Citation
Web http://onlinelibrary.wiley.com/doi/10.1111/j.1365-2966.2010.17753.x/abstract
Doi http://dx.doi.org/10.1111/j.1365-2966.2010.17753.x
Field Astronomy and astrophysics
Keywords Wasp-10b; extrasolar planet
Description Transit timing analysis may be a method of discovering additional bodies in extra- solar systems that harbour transiting exoplanets. The deviations from the Keplerian motion, caused by mutual gravitational interactions between planets, are expected to generate transit timing variations of transiting exoplanets. In 2009, we collected nine light curves of eight transits of the exoplanet WASP-10b. Combining these data with those published, we have found that transit timing cannot be explained by a constant period but by a periodic variation. Simplified three-body models, which reproduce the observed variations of timing residuals, were identified by numerical simulations. We have found that the configuration with an addi- tional planet with a mass of 0.1 MJ and an orbital period of 5.23 d, located close to the outer 5:3 mean motion resonance, is the most likely scenario. If the second planet is a transiter, the estimated flux drop will be 0.3 per cent and can be observed with a ground-based telescope.
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