Orbital parameters refinement on hot-Jupiters with space and ground-based observations. First step towards atmospheric characterization

MICULÁN, R. G.; PARZAJUK, N.; DÍAZ, R. F.; TORRES, A. F.

Viedma, Río Negro

Congreso; 61 Reunión Anual de la Asociación Argentina de Astronomía; 2019

To date, thousands of exoplanets have been discovered. Studying them in detail to know theirparticularities and physical properties is one of the most attractive challenges of astronomy and astrophysicstoday. In this work, we identify a group of hot Jupiters that fulfill the necessary conditions to study theiratmospheres. As an initial sample, we photometrically observed several transits of four of them with Argentinetelescopes. In addition, we consider the data recently published by the TESS satellite. We found the orbital andplanetary parameters of the systems and compared the results of our analysis of the TESS data with the analysisprovided by NASA, finding a good agreement. Finally, we combined the data obtained from the ground with thespace ones to refine these parameters comparing them with those published in the literature.