Radial velocity detection and statistical analysis of substellar companions in the outer regions of extrasolar systems

Diplôme Thèse Radial velocity detection and statistical analysis of substellar companions in the outer regions of extrasolar systems eng 2018-05-02 author Rey Cerda Javiera 805920 director Bouchy François 133687 director Udry Stéphane 23409 10.13097/archive-ouverte/unige:140491 urn:nbn:ch:unige-1404914 Sc. 5338 This work studies massive long-period exoplanets, similar to Jupiter, orbiting nearby Sun-like stars in our galaxy. The main method used is Doppler spectroscopy, also known as the Radial Velocity method. This research is based on two observational programs: A follow-up of long-period exoplanet candidates observed by the ELODIE and SOPHIE spectrographs for over 20 years, and a follow-up of planetary systems containing a hot Jupiter and signals of an additional giant planet in a wider orbit, observed with the CORALIE spectrograph. The characteristics of each program are discussed, as well as the results found. Additionally, the possibility of these radial velocity signals being caused by stellar magnetic cycles is also discussed. When this is ruled out, the orbital parameters and characteristics of every system are estimated. Finally, this thesis explores the possible synergies between Radial Velocities and other exoplanet detection techniques such as Direct Imaging, Astrom Dewey 520 26 Département d'astronomie 12 false b38bc948-eefc-40dd-ba7f-bd1542397347 Thesis Restricted thesis_JRey_5338.pdf 45466093 application/pdf 81574f6bb97d298488989e03d302167474a937ae5be3efcf088894223afbcbbb restrictedAccess Faculté des sciences / Département d'astronomie

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Radial velocity detection and statistical analysis of substellar companions in the outer regions of extrasolar systems				2018	583	2

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Rey Cerda, Javiera