Abstract
The 5.9M⊙ star HD 125823 is a striking helium variable with a period of 8.82d, ranging in helium spectral type from He-strong B2 to B8 (e.g., Norris 1968 [3]). In fact, HD 125823 seems to be a transition object between the He-weak and He-strong stars with unreddened colors just at the boundary between the two groups in the UBV color-color diagram. Although highdispersion studies have been carried out in the past by several authors (e.g. Wolff & Morrison 1974 [6]), no abundance analysis is available.
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References
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Hubrig, S., Nesvacil, N., González, F., Wolff, B., Savanov, I. (2008). A Study of the Magnetic Helium Variable Emission-line Star HD 125823. In: Santos, N.C., Pasquini, L., Correia, A.C.M., Romaniello, M. (eds) Precision Spectroscopy in Astrophysics. ESO Astrophysics Symposia. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-75485-5_71
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DOI: https://doi.org/10.1007/978-3-540-75485-5_71
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