UNIGE document Doctoral Thesis
previous document  unige:109514  next document
add to browser collection
Title

Des étoiles de très faibles masses aux planètes: contraintes des modèles d'évolution par analyse combinée de vitesses radiales et d'imagerie à haut contraste

Author
Director
Defense Thèse de doctorat : Univ. Genève, 2018 - Sc. 5263 - 2018/06/22
Abstract Formation and evolution of stars and substellar objects (brown dwarfs and planets) are described by theoretical models. Observers can use these models to determine several parameters of an object taken observables. However, these models still need to be properly tested and calibrated with observations. The purpose of this thesis is to bring some constrain to stellar and substellar formation and evolutionary models. I combined the high contrast imaging and radial-velocity methods to study substellar objects at wide separation and stellar systems of very low mass stars. This combination of techniques allow to determine the dynamical masses of the objects inside a system. Thanks to the high contrast imaging, photons coming directly from the objects can be collected which allowed me to characterize the atmosphere of substellar objects with a spectral analyze. These informations allow to put some constrain to evolutionary models of substellar objects.
Keywords StarSubstellarPlanetBrown-dwarfHigh contrast imagingRadial-velocitySPHERE
Identifiers
URN: urn:nbn:ch:unige-1095141
Full text
Thesis (86.7 MB) - private document Private access (until 2019-10-17)
Structures
Research group Direction de recherche "Planètes extrasolaires"
Citation
(ISO format)
PERETTI, Sébastien. Des étoiles de très faibles masses aux planètes: contraintes des modèles d'évolution par analyse combinée de vitesses radiales et d'imagerie à haut contraste. Université de Genève. Thèse, 2018. https://archive-ouverte.unige.ch/unige:109514

17 hits

1 download

Update

Deposited on : 2018-10-22

Export document
Format :
Citation style :