Speaker: A. Garrido (UNIPA) Titolo: Analysis of exoplanetary atmospheres. Abstract: The seminar summarizes the work of my last PhD year. During the talk I will explain how to obtain an atmospheric transmission spectrum of a transit exoplanet: Kelt-9b. The analyzes carried out will be explained and finally I will show the Balmer lines of the exoplanet’s atmosphere. The seminar concludes with the derivation