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Title: Infrared laboratory oscillator strengths of Fe I in the H-band

We report experimental oscillator strengths for 28 infrared Fe I transitions, for which no previous experimental values exist. These transitions were selected to address an urgent need for oscillator strengths of lines in the H-band (between 1.4 μm and 1.7 μm) required for the analysis of spectra obtained from the Sloan Digital Sky Survey (SDSS-III) Apache Point Galactic Evolution Experiment (APOGEE). Upper limits have been placed on the oscillator strengths of an additional seven transitions, predicted to be significant by published semi-empirical calculations, but not observed to be so.
Authors:
;  [1] ;  [2] ;  [3]
  1. Blackett Laboratory, Department of Physics, Imperial College London, London SW7 2AZ (United Kingdom)
  2. Instituto de Astrofísica de Canarias, E-38205 La Laguna, Tenerife (Spain)
  3. National Institute of Standards and Technology, Gaithersburg, MD 20899-8422 (United States)
Publication Date:
OSTI Identifier:
22348554
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astrophysical Journal; Journal Volume: 779; Journal Issue: 1; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; GALACTIC EVOLUTION; INFRARED RADIATION; IRON; ISOCHRONOUS CYCLOTRONS; OSCILLATOR STRENGTHS; SPECTRA