Abstract
We confirm that wavelengths shifts in the Ca II infrared triplet of CP stars are due to the rare, heavy isotope 48Ca. We have measurements of the previously difficult component λ8542, as well as additional measurements of all three components. The shifts occur in a wide variety of CP stars, ranging from cool CP2 types to the hotter CP3 stars. The relative proportions of the Ca isotopes appear to vary from terrestrial to nearly pure 48Ca.
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Cowley, C.R., Hubrig, S., Castelli, F., Wolff, B., González, F. (2008). Heavy Calcium in CP Stars: A New Isotopic Anomaly. 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_60
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DOI: https://doi.org/10.1007/978-3-540-75485-5_60
Publisher Name: Springer, Berlin, Heidelberg
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