Isotopic Anomalies in CP Stars : Helium , Mercury , Platinum , and Calcium
نویسندگان
چکیده
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, 48 Ca can rival and even dominate the more common, alpha nuclide, 40 Ca. 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.
منابع مشابه
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