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Surface mapping in the CP4 star HD 21699

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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.

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Authors and Affiliations

  1. Institute of Astronomy, Bulgarian Academy of Sciences, 72 Tzarigradsko shosse, 1784, Sofia, Bulgaria

    I. K. Stateva

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  1. I. K. Stateva
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Stateva, I.K. Surface mapping in the CP4 star HD 21699. Astrophys Space Sci 226, 329–336 (1995). https://doi.org/10.1007/BF00627377

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  • DOI: https://doi.org/10.1007/BF00627377

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