Isotopic Anomalies in CP Stars: Helium, Mercury, Platinum, and Calcium

Details Isotopic Anomalies in CP Stars: Helium, Mercury, Platinum, and Calcium Isotopic Anomalies in CP Stars: Helium, Mercury, Platinum, and Calcium

2007-11-15

arxiv.org/abs/0711.2504v1

Contrib.Astron.Obs.Skalnate Pleso 38:291-300,2008

Astronomy and Astrophysics

Astrophysics

Review presented at the CP/Ap Workshop, Vienna, Austria in September 2007

Scientific paper

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, Ca-48 can rival and even dominate the more common, alpha nuclide, Ca-40. 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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