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Astrophysics and Space Science

, Volume 226, Issue 2, pp 329–336 | Cite as

Surface mapping in the CP4 star HD 21699

  • I. K. Stateva
Article

Abstract

Spectra obtained on photographic plates with the Coudé-spectrograph of the 2-m telescope of BNAO - Rozhen have been used to map the helium surface distribution of the He-w star HD 21699. One-spot model has been determined to fit the observed periodic variations of the equivalent widths. The results show one large He-weak spot situated around the positive magnetic pole.

Key words

Stars chemically peculiar HD 21699 surface mapping 

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Copyright information

© Kluwer Academic Publishers 1995

Authors and Affiliations

  • I. K. Stateva
    • 1
  1. 1.Institute of AstronomyBulgarian Academy of SciencesSofiaBulgaria

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