Journal
ASTROPHYSICAL JOURNAL LETTERS
Volume 711, Issue 2, Pages L104-L107Publisher
IOP PUBLISHING LTD
DOI: 10.1088/2041-8205/711/2/L104
Keywords
atomic data
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Funding
- PPARC, UK [PP/D00103X/1]
- STFC [ST/G001626/1, PP/D00103X/1] Funding Source: UKRI
- Science and Technology Facilities Council [ST/G001626/1, PP/D00103X/1] Funding Source: researchfish
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Two recent observational studies of the [Fe II] lambda 12567/lambda 16435 line ratio by Smith & Hartigan and Rodriguez-Ardila et al. have suggested that the available theoretical A-values could be incorrect to 10%-40%. We have carried out an extensive configuration interaction calculation of [Fe II] lines to investigate this claim, as well as the variability in observed line ratios for lambda 8617/lambda 9052 and lambda 8892/lambda 9227 of Dennefeld. For these transitions, we are generally in good agreement with the results of Nussbaumer & Storey, less so with those of Quinet et al. In comparison, the ratios derived from observations appear either to be less secure, or other factors influence those results.
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