Journal Article

Anomalous mixing of the and levels in Fe <span class="smallCaps">ii</span>

M. P. Donnelly and A. Hibbert

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 301, issue 3, pages 809-812
Published in print December 1998 | ISSN: 0035-8711
Published online December 1998 | e-ISSN: 1365-2966 | DOI:
Anomalous mixing of the  and  levels in Fe ii

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The neighbouring lines (1272.617 Å) and (1272.657 Å) have been observed in the UV spectrum of χ Lupi to be of comparable intensity. The latter, ΔS = 2, transition would be expected to be very weak. The two upper states should display negligible mixing. We give a detailed, quantitative discussion of how the two upper states are in fact strongly mixed through their mixing with , and hence we explain the relative strengths of the two UV lines.

Keywords: atomic data

Journal Article.  0 words. 

Subjects: Astronomy and Astrophysics

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