Fundamental properties of very low mass star and brown dwarf binaries [Elektronische Ressource] / by Hervé Bouy

Ludwig Maximilian Universitat - Munich Universite Joseph Fourier - GrenobleFakultat fur Physik UFR de PhysiqueFundamental properties of very lowmass star and brown dwarf binariesTHESISsubmitted on the 19 july 2004for the degrees ofDoktor der Ludwig Maximilian Universitat { Munich(Naturwissenschaften)Docteur de l’universite Joseph Fourier { Grenoble 1(Astrophysique et milieux dilues)byHerve BouyCommitteeChairs : Prof. Gregor Mor ll (MPE, Munich, Germany)Prof. Jer^ ome Bouvier (UJF, Grenoble, France)Referees : Prof. Isabelle Bara e (ENS, Lyon, France)Prof. Ralph Bender (LMU, Munich, Germany)Prof. Thomas Gehren (LMU, Munich,y)Guests : Dr. Wolfgang Brandner (MPIA, Heidelberg, Germany)European Southern ObservatoryMax Planck Institut fur extraterrestrische PhysikLaboratoire d’AstrOphysique de Grenoble | UMR 5571Erstgutgachter: Prof. Dr. Gregor Mor llZweitgutachter: Prof. Dr. Isabelle Bara eDate of the oral examination: 24/09/2004iiiAknowledgmentsJe veux tout d’abord remercier mes Parents, une fois pour leur patience, et une autre fois pourleurs encouragements constants.I thank particularly Wolfgang Brandner and Ralph Neuhauser for inviting me to work rstat ESO and then at MPE. I am grateful to Jer^ ome Bouvier for co-supervising my work duringthese three years, and thus allowing me to make a cotutelle. I am grateful to Prof. Mor ll forinviting me to stay at the MPE and supervising my work during the last year of my thesis.