New Mn II energy levels from the STIS-HST spectrum of the HgMn star HD 175640
Aims. The NIST database lists several Mn ii lines that were observed in the laboratory but not classified. They cannot be used in spectrum synthesis because their atomic line data are unknown. These lines are concentrated in the 2380−2700 Å interval. We aimed to assign energy levels and log gf valu...
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Veröffentlicht in: | Astronomy and astrophysics (Berlin) 2015-08, Vol.580, p.A10 |
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