Abstract
We discuss the results of a LTE abundance study of 14 single-lined RS CVn binaries. Increasingly peculiar abundance ratios are observed for the cooler and more active stars in this sample (this is best illustrated in the case of oxygen). This may arise from the existence of large spot groups, departures from LTE much larger than anticipated and/or inadequacies in the Kurucz model atmospheres for these objects.
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Morel, T., Micela, G. & Favata, F. Photospheric Abundance Peculiarities in RS CVn Binaries. Astrophys Space Sci 304, 185–187 (2006). https://doi.org/10.1007/s10509-006-9106-z
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DOI: https://doi.org/10.1007/s10509-006-9106-z