Detection of the rare-earth element dysprosium (Dy) in the spectra of several library stars (from top to bottom for the Fe I line core; Sun, 70 Vir, α Boo, α Ari, μ Leo). Dysprosium’s name comes from greek dusprositos and means “hard to get at”. The singly-ionized Dy line at 4050.55 Å is indicated along with one Zr II and one Fe I line.
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