RT info:eu-repo/semantics/masterThesis
T1 Studying exoplanetary atmospheres using Chromatic Line-Profile Doppler Tomography technique
A1 Esparza Borges, Emma
A2 Máster Universitario en Astrofísica
AB We aim to probe the atmospheric composition of extrasolar planets, specificallyhot Jupiters, retrieving their transmission spectra via the novel Chromatic LineProfile Tomography method. This new method relies on measuring the spectral linedistortions caused by the planet shading parts of the rotating stellar surface, whichare reflected in the Cross Correlation Functions (CCFs). Hence, once the transmissionspectra is retrieved, it can reveal narrow and broadband features which can provideinformation about the composition of the planet’s atmosphere. In this project, wedeveloped a Chromatic Doppler Tomography -based methodology able to fit observational data to extract transmission spectra. We used the publicly available SOAP codeto produce the Doppler Tomography models which are used to fit observational datavia an MCMC fitting procedure. Also, we tested our methodology with ESPRESSOand HARPS-N data of the well-studied hot Jupiter HD 209458b, which were obtained during several transits of the planet. The transmission spectra of HD 209458bobtained through this technique reproduced previous results published in the bibliography, proving that the Chromatic Line-Profile Doppler Tomography methodologypresented in this work can be a useful and novel technique to explore the atmospheresof transiting planets
YR 2021
FD 2021
LK http://riull.ull.es/xmlui/handle/915/22400
UL http://riull.ull.es/xmlui/handle/915/22400
LA en
DS Repositorio institucional de la Universidad de La Laguna
RD 15-may-2024