X-ray spectroscopy of RS CVn stars with EXOSAT.
Schmitt, J. H. M. M.; Pasquini, L.; Pallavicini, R.
Germany, Italy
Abstract
Results are presented of a spectral analysis of a sample of RS CVn stars which comprises all (except two) cataloged RS CVn binaries observed by Exosat. Data from both the Medium Energy and Low Energy Exosat experiments are analyzed assuming simple spectral models and the dependence of the fitted coronal parameters on the signal-to-noise ratio. Evidence is found for multitemperature coronal structures in RS CVn stars, together with indications of intrinsic differences in the temperature stratification of different stars.