CAOSP abstracts, Volume: 38, No.: 2, year: 2008

Author(s): Cowley, C.R.; Hubrig, S.; Castelli, F.
Journal: Contributions of the Astronomical Observatory Skalnaté Pleso, vol. 38, no. 2, p. 291-300.
Date: 4/2008
Title: Isotopic anomalies in CP stars: helium, mercury, platinum, and calcium
Keyword(s): stars: abundances, stars: chemically peculiar, stars: magnetic fields, stars: oscillations
Pages: 291 -- 300

Abstract: We review the classical observational results for isotopic abundance variations for several elements in CP stars. We concentrate on the "newest" anomaly, in calcium. The cosmically very rare isotope, ⁴⁸Ca can rival and even dominate the more common, alpha nuclide, ⁴⁰Ca. Relevant examples are found in the hot, non-magnetic HgMn stars, and the field horizontal-branch star, Feige 86. The calcium anomaly is also present in cool, magnetic stars, including the notorious HD 101065, Przybylski's star.

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