Discovery of a hot, interactive companion to the S star HD 35155

  • H. R. Johnson
  • T. B. Ake
6. Workshop on Alpha Orionis
Part of the Lecture Notes in Physics book series (LNP, volume 193)


During an IUE investigation of the chromospheres of S stars, we detected strong emission lines of such ions as C IV and Si IV and excess continuous emission in an SWP exposure of HD 35155 (S3,2).7hese emission lines indicate a hot gas with a state of ionization exceeding that found in the recently studied Ba star systems of Zeta Cap and 56 Peg, both of which have white dwarf companions. IUE observations 7 months later showed the continuum had decreased by about 0.5 mag. and the emission lines by 15–50%, the high excitation lines decreasing most rapidly.


White Dwarf Infrared Spectrophotometry Strong Emission Line NASA Ames Research Computer Science Corporation 
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Copyright information

© Springer-Verlag 1984

Authors and Affiliations

  • H. R. Johnson
    • 1
    • 2
  • T. B. Ake
    • 3
  1. 1.Indiana UniversityBloomington
  2. 2.NAS-NRC Senior Fellow, NASA Ames Research Center, Moffett FieldCalifornia
  3. 3.Computer Sciences Corporation, NASA-Goddard Space Flight Center GreenbeltMaryland

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