Placing limits on the transit timing variations of circumbinary exoplanets

D. Armstrong, D.~V. Martin, G. Brown, F. Faedi, Y. Gómez Maqueo Chew, R. Mardling, D. Pollacco, A.~H.~M.~J. Triaud, S. Udry

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)


We present an efficient analytical method to predict the maximum transit timing variations of a circumbinary exoplanet, given some basic parameters of the host binary. We derive an analytical model giving limits on the potential location of transits for coplanar planets orbiting eclipsing binaries, then test it against numerical N-body simulations of a distribution of binaries and planets. We also show the application of the analytic model to Kepler-16b, -34b and -35b. The resulting method is fast, efficient and is accurate to approximately 1 per cent in predicting limits on possible times of transits over a 3-yr observing campaign. The model can easily be used to, for example, place constraints on transit timing while performing circumbinary planet searches on large data sets. It is adaptable to use in situations where some or many of the planet and binary parameters are unknown.
Original languageEnglish
Pages (from-to)3047-3054
Number of pages8
JournalRoyal Astronomical Society. Monthly Notices
Publication statusPublished - 1 Oct 2013


  • binaries: eclipsing, planetary systems


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