Transit timing analysis of the exoplanet TrES-5 b. Possible existence of the exoplanet TrES-5 c
Abstract
In this work, we present transit timing variations detected for the exoplanet TrES-5b. To obtain the necessary amount of photometric data for this exoplanet, we have organized an international campaign to search for exoplanets based on the transit-timing variation (TTV) method and as a result of this we collected 30 new light curves, 15 light curves from the Exoplanet Transit Database (ETD) and 8 light curves from the literature for the timing analysis of the exoplanet TrES-5b. We have detected timing variations with a semi-amplitude of A≈ 0.0016 d and a period of P≈ 99 d. We carried out the N-body modelling based on the three-body problem. The detected perturbation of TrES-5b may be caused by a second exoplanet in the TrES-5 system. We have calculated the possible mass and resonance of the object: M ≈ 0.24MJup at a 1:2 Resonance.
- Publication:
-
Monthly Notices of the Royal Astronomical Society
- Pub Date:
- October 2018
- DOI:
- 10.1093/mnras/sty1615
- arXiv:
- arXiv:1806.03503
- Bibcode:
- 2018MNRAS.480..291S
- Keywords:
-
- methods: data analysis;
- methods: numerical;
- techniques: photometric;
- techniques: radial velocities;
- techniques: high angular resolution;
- planetary systems;
- Astrophysics - Earth and Planetary Astrophysics
- E-Print:
- 21 pages, 5 figures