Variable Hα emission in the helium-strong star δ orionis C

  • D. A. Bohlender
  • C. T. Bolton
  • G. A. H. Walker
IV. Non-classical Phenomena in Early-Type Stars
Part of the Lecture Notes in Physics book series (LNP, volume 401)


Recent Hα spectroscopy of the helium-strong star δ Ori C (= HD 36485) has revealed the presence of double-peaked Hα emission in this sharp-lined and strongly magnetic B3V star. Changes in the emission are evident over a 3.5 hr time span, and the profile variations are periodic with a period on the order of 1 . d 5


Profile Variation Surface Magnetic Field Helium Star Stellar Magnetosphere Dominion Astrophysical Observatory 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. Barker, P.K., Brown, D.N., Bolton, C.T., and Landstreet, J.D. 1982, in Advances in Ultraviolet Astronomy: Four Years of IUE Research, ed. Y. Kondo, J.M. Mead, and R.D. Chapman (NASA CP-2238), p. 589.Google Scholar
  2. Bohlender, D.A. 1989, Ap.J., 346, 459.Google Scholar
  3. Bohlender, D.A., Brown, D.N., Landstreet, J.D., and Thompson, I.B. 1987, Ap.J., 323, 325.Google Scholar
  4. Bolton, C.T., Fullerton, A.W., Bohlender, D.A., Landstreet, J.D., and Gies, D.R. 1986, in IA U Colloquium 92, The Physics of Be Stars, ed. A. Slettebak and T.P. Snow (Cambridge: Cambridge University Press), p. 82.Google Scholar
  5. Drake, S.A., Abbott, D.C., Bastian, T.S., Bieging, J.H., Churchwell, E., Dulk, G., and Linsky, J.L. 1987, Ap.J., 322, 902.Google Scholar
  6. Drilling, J.S., and Hill, P.W. 1986, in Hydrogen Deficient Stars and Related Objects, eds. K. Hunger et al. (Dordrecht: Reidel) p. 499.Google Scholar
  7. Hunger, K., Heber, U., and Groote, D. 1989, Asiron. Astrophys., 224, 57.Google Scholar
  8. Shore, S.N., and Brown, D.N. 1990, Ap.J., 365, 665.Google Scholar

Copyright information

© Springer-Verlag 1992

Authors and Affiliations

  • D. A. Bohlender
    • 1
  • C. T. Bolton
    • 2
  • G. A. H. Walker
    • 1
  1. 1.Department of Geophysics and AstronomyUniversity of British ColumbiaVancouver, B.C.Canada
  2. 2.David Dunlap ObservatoryRichmond Hill, ONCanada

Personalised recommendations