Astronomical School’s Report, 2015, Volume 11, Issue 1, Pages 48–52
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UDC 524.386-878

Application of transit timing variation method (TTV) to exoplanet system TrES-3

Kuznyetsova Yu.1, Shliakhetskaya Y.1, Matsiaka O.2, Krushevska V.1, Romanyuk Ya.1

1Main Astronomical Observatory NAS of Ukraine
2Kyiv Shevchenko National University, Ukraine


On the basis of the original photometric data, the light curves of several transits in the exoplanet system TrES-3 were simulated by Monte Carlo method. Using these curves, the estimates of precise values of mid-transit time were calculated to assess the possibility of finding new planets by timing method in already known exoplanet systems using ground-based observations at small telescopes. More accurate values of the some orbital and physical parameters of TrES-3 system were also obtained including following the planet-star radius ratio (RP/R*), the angle of the planet orbital plane inclination (i).

Keywords: exoplanet; transit; timing; Monte-Carlo method


  1. Gimenez A. (2006). Equations for the analysis of the light curves of extra-solar planetary transits. The Astrophysical Journal, 2006(450), 1231–1237.
  2. Kopal Z. Language of the stars: A Discourse on the theory of the light changes of eclipsing variables. Netherlands: Springer Netherlands, 1979.
  3. Krushevska V., Kuznyetsova Yu., Matsiaka O., et al. (2014). Determination of parameters of transit exoplanets, using data obtained at the small telescopes. Contributions of the Astronomical Observatory Skalnate Pleso (Proceedings), 43(3), 458–458.

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