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Variable, optically thick, hot plasma observed in interacting binaries

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Abstract

We report recent International Ultraviolet Explorer (IUE) observations of two interacting binaries, R Arae and HD 207739. The ultraviolet spectra indicate the presence of optically-thick, variable hot plasma in those binary systems. These two binaries may belong to a class of binaries that are currently undergoing a rarely observed and probably short-lived phase in their evolution. Their properties are compared with those of two other interacting binaries, U Cephei and β Lyrae.

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Authors and Affiliations

  1. Laboratory for Astronomy and Solar Physics, NASA-Goddard Space Flight Center, Greenbelt, Md., USA

    Y. Kondo

  2. Division of Astronomy, Department of Mathematics, Lehigh University, Bethlehem, Pa., USA

    G. E. McCluskey

  3. Space Telescope Science Institute, Johns Hopkins University, Baltimore, Md., USA

    S. B. Parsons

Authors
  1. Y. Kondo
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  2. G. E. McCluskey
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  3. S. B. Parsons
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Kondo, Y., McCluskey, G.E. & Parsons, S.B. Variable, optically thick, hot plasma observed in interacting binaries. Astrophys Space Sci 99, 281–286 (1984). https://doi.org/10.1007/BF00650251

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  • DOI: https://doi.org/10.1007/BF00650251

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