We report the discovery of the fifth self-lensing binary in which a low-mass white dwarf (WD)
gravitationally magnifies its 15th magnitude G-star companion, KIC 8145411, during …

Our knowledge of the populations and occurrence rates of planets orbiting evolved
intermediate-mass stars lags behind that for solar-type stars by at least a decade. Some …

The sensitivities of radial velocity (RV) surveys for exoplanet detection are extending to
increasingly longer orbital periods, where companions with periods of several years are now …

We measure precise orbits and dynamical masses and derive age constraints for six
confirmed and one candidate Sirius-like systems, including the Hyades member HD 27483 …

We conducted speckle imaging observations of 53 stellar systems that were members of
long-term radial velocity (RV) monitoring campaigns and exhibited substantial accelerations …

Abstract The Transit Ephemeris Refinement and Monitoring Survey is a project that aims to
detect transits of intermediate-long period planets by refining orbital parameters of the …

Abstract Hubble Space Telescope (HST) Fine Guidance Sensor (FGS) trigonometric
parallax observations were obtained to directly determine distances to five nearby M …

Résumé Ce manuscrit présente la recherche menée durant ma thèse de doctorat, sous la
supervision de Damien Ségransan (Université de Genève) au département d'astronomie, au …

Abstract Hubble Space Telescope (HST) Fine Guidance Sensor (FGS) trigonometric
parallax observations were obtained to directly determine distances to five nearby M …