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Powerful astronomical spectra reveal an urgent need for additional work onatomic lines, levels, and oscillator strengths. The star HD 65949 provides someexcellent examples of species rarely identified in stellar spectra. Forexample, the Re II spectrum is well developed, with 17 lines between 3731 and4904 [A], attributed wholly or partially to Re II. Classifications andoscillator strengths are lacking for a number of these lines. The spectrum ofOs II is well identified. Of 14 lines attributed wholly or partially to Os II,only one has an entry in the VALD database. We find strong evidence that Te IIis present. There are NO Te II lines in the VALD database. Ru II is clearlypresent, but oscillator strengths for lines in the visual are lacking. There isexcellent to marginal evidence for a number of less commonly identifiedspecies, including Kr II, Nb II, Sb II, Xe II, Pr III, Ho III, Au II, and Pt II(probably Pt-198), to be present in the spectrum of HD 65949. The line Hg II at3984 [A] is of outstanding strength, and all three lines of Multiplet 1 of Hg Iare present, even though the surface temperature of HD 65949 is relativelyhigh. Finally, we present the case of an unidentified, 24 [mA], line at 3859.63[A], which could be the same feature seen in magnetic CP stars. It is typicallyblended with a putative U II line used in cosmochronology.

Re II and Other Exotic Spectra in HD 65949