Photometric Investigation of Hot Exoplanets: TrES-3b and Qatar-1b

Abstract

New photometric follow-up observations of exoplanet transits of 'hot Jupiters' TrES-3b and Qatar-1b are presented. Weighted mean values of the solutions of light curves in R-fiter for both planetary systems are reported and compared with the previous results. The transit light curves were analysed using the WINFITTER code. The physical properties of the planets were estimated. The planet radii are found to be $R_p=1.381\pm 0.033R_J$ for TrES-3b and $R_p=1.142\pm 0.025R_J$ for Qatar-1b. Transit times and their uncertainties were also determined and a new linear ephemeris was computed for both systems. Analysis of transit times showed that a significant signal could not be determined for TrES-3b, while weak evidence was found for Qatar-1b, which might be tested using more precise future transit times.

20 pages, 9 figures. Accepted for publication in New Astronomy

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Cited by in corpus (9)

• TESS Transit Timing of Hundreds of Hot Jupiters
• ExoClock Project III: 450 new exoplanet ephemerides from ground and space observations
• Visible-light Phase Curves from the Second Year of the TESS Primary Mission
• ExoClock project II: A large-scale integrated study with 180 updated exoplanet ephemerides
• Probing Transit Timing Variation and its Possible Origin with Twelve New Transits of TrES-3b
• Evidence of Long-Term Period Variations in the Exoplanet Transit Database (ETD)
• Revisiting the Transit Timing Variations in the TrES-3 and Qatar-1 systems with TESS data
• Are There Transit Timing Variations for the Exoplanet Qatar-1b ?
• Planet-star interactions with precise transit timing. IV. Probing the regime of dynamical tides for GK host stars