Astrophysics and Space Science

, Volume 18, Issue 2, pp 324–328 | Cite as

Observations spectroscopiques de HD 50138

  • Yvette Andrillat
  • Léo Houziaux


Observations of the Be star HD 50138 have been extended to the photographic infrared region up to 9500 Å. The main features noted in this wavelength range are strong lines of Oi (8446 Å), Hi (from P 9 to P 20), the Caii infrared triplet and the λ8629 line attributed to Ni. The λ7772 multiplet of Oi is shown to undergo important changes during the period of observations (1959–1971). Higher Balmer lines do not exhibit any emission component, but their profiles are variable and indicate the presence of satellite absorption, as already mentioned by some authors.


Wavelength Range Important Change Infrared Region Strong Line Observation Spectroscopiques 
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  2. Houziaux, L.: 1960,Publ. Obs. Haute Prov. 5, No. 24.Google Scholar
  3. Merrill, P.: 1931,Astrophys. J. 73, 348.Google Scholar

Copyright information

© D. Reidel Publishing Company 1972

Authors and Affiliations

  • Yvette Andrillat
    • 1
  • Léo Houziaux
    • 2
  1. 1.Laboratoire d'AstronomieUniversité des Sciences et Techniques du LanguedocMontpellierFrance
  2. 2.Départment d'AstrophysiqueUniversité de MonsMonsBelgique

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