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Evidence for a temperature rise in the outer layers of α Lyrae,fromCopernicus observations of lyman-α
Authors:Françoise Praderie  Eduardo Simonneau  Theodore P Snow Jr
Institution:1. Institut d'Astrophysique, Paris, France
2. Princeton University Observatory, Princeton, N.J., USA
Abstract:The wings of Lα in α Lyr (A0 V), observed by theCopernicus satellite, cannot be interpreted if one assumes a classical LTE model photosphere. We argue that the electron temperature must increase outwards over the surface value reached in radiative equilibrium.
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