The outer atmospheres of flare stars discovered with GALEX in the near-UV

Magnetic activity produces copious UV and Xray emission in the chromosphere,transition region and corona of latetype stars. Both types of radiation arebelieved to be crucial for the evolution of the atmospheres of the planet buttheir relative importance is not known. While Xrays penetrate deeper into theplanet atmosphere, UV fluxes may be higher and significantly affect the outerlayers of the planet atmosphere. We aim at a comprehensive study of the strengthand range of Xray and UV fluxes for M dwarfs identified in the GALEX AllSkySurvey. In this proposal we ask for the corresponding Xray measurements. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]