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Evidence for a temperature rise in the outer layers of α Lyrae, fromCopernicus observations of lyman-α

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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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Authors and Affiliations

  1. Institut d'Astrophysique, Paris, France

    Françoise Praderie & Eduardo Simonneau

  2. Princeton University Observatory, Princeton, N.J., USA

    Theodore P. Snow Jr.

Authors
  1. Françoise Praderie
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  2. Eduardo Simonneau
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  3. Theodore P. Snow Jr.
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Praderie, F., Simonneau, E. & Snow, T.P. Evidence for a temperature rise in the outer layers of α Lyrae, fromCopernicus observations of lyman-α. Astrophys Space Sci 38, 337–343 (1975). https://doi.org/10.1007/BF00647132

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  • DOI: https://doi.org/10.1007/BF00647132

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