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Observationally determined Fe II oscillator strengthsAbsorption oscillator strengths for 21 Fe II resonance lines, have been determined using a curve-of-growth analysis of interstellar data from the Copernicus and International Ultraviolet Explorer (IUE) satellites. In addition to slight changes in strengths of the far-UV lines, new f-values are reported for wavelength 1608.45, a prominent line in interstellar and quasar absorption spectra, and for wavelength 2260.08, a weak, newly identified linen in IUE interstellar spectra. An upper limit on the strength of the undetected line at 2366.867 A (UV multiplet 2) is set. Using revised oscillator strengths, Fe II column densities toward 13 OB stars are derived. The interstellar depletions, (Fe/H), relative to solar values range between factors of 10 and 120.
Document ID
19830061248
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Van Steenberg, M.
(Joint Institute for Laboratory Astrophysics; Colorado, University Boulder, Co, United States)
Shull, J. M.
(Joint Inst. for Lab. Astrophysics Boulder, CO, United States)
Seab, C. G.
(Joint Inst. for Lab. Astrophysics Boulder, CO, United States)
Date Acquired
August 11, 2013
Publication Date
August 1, 1983
Publication Information
Publication: Astrophysical Journal, Part 1
Volume: 271
ISSN: 0004-637X
Subject Category
Astrophysics
Accession Number
83A42466
Funding Number(s)
CONTRACT_GRANT: NAG5-193
CONTRACT_GRANT: NAS5-26409
Distribution Limits
Public
Copyright
Other

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