Direct determination of physical parameters for main sequence stars

摘要: The environment of planetary formation and evolution is mainly characterized by its host star's physical properties. Until recently most fundamental stellar parameters, like e. g. the radius effective temperature, have only been estimated indirectly; but with advances in interferometric observing technique it now possible to obtain a direct estimate them. In this poster we present preliminary results from measured fringe visibilities main-sequence stars. These will be used determine their radii temperatures allow us better characterize planets around these