Observations and modeling of the transiting exoplanets XO-2b, HAT-P-18b, and WASP-80b

Abstract

We present photometric observations and transit solutions of the exoplanets XO-2b, HAT-P-18b and WASP 80b. Our solution of the XO-2b transit gave system parameters whose values are close to those of the previous studies. The solutions of the new transits of HAT-P-18b and WASP 80b differ from the previous ones by bigger stellar and planet radii. We obtained new values of the target initial epochs corresponding to slightly different periods. Our investigation reaffirmed that small telescopes can be used successfully for the study of exoplanets orbiting stars brighter than 13 mag.

Keywords

• planetary systems
• Techniques: photometric
• Stars: individual: XO-2b, HAT-P-18b, WASP 80b