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German language short article on the 'Risk of Defining Risk', discussing and comparing the pros and cons of different sociological definitions (e.g. by Ulrich Beck and Niklas Luhmann)

A Comparison of Copper Abundances in Globular Cluster and Halo Field Giant Stars

We derive [Cu/Fe] for 117 giant stars in 10 globular clusters (M3, M4, M5, M10, M13, M15, M71, NGC 7006, NCG 288, and NGC 362) and find that globular cluster Cu abundances appear to follow [Cu/Fe] trends found in the field. This result is interesting in light of recent work, which indicates that the globular cluster ω Centauri shows no trend in [Cu/Fe] with [Fe/H] over the abundance range -2.0