Oscillator Strengths for Visible and Ultraviolet Observations of Interstellar Molecules
نویسندگان
چکیده
منابع مشابه
Atomic Oscillator Strengths in the Vacuum Ultraviolet
We have developed techniques to measure branching fractions in the vacuum ultraviolet using diffraction grating spectroscopy and phosphor image plates as detectors. These techniques have been used to measure branching fractions in Fe II that give prominent emission lines in astrophysical objects.
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Oscillator strengths for transitions in Cl ii and iii are derived from lifetimes and branching fractions measured with beam-foil techniques. The focus is on the multiplets at 10718 in Cl ii and 10118 in Cl iiiwhose lines are seen in spectra acquired with the Far Ultraviolet Spectroscopic Explorer. These data represent the first complete set of experimental f-values for the lines in the multiple...
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High-quality oscillator strengths are needed to convert the amount of interstellar absorption into an accurate abundance from data acquired with the Hubble Space Telescope and the Far Ultraviolet Spectroscopic Explorer. In order to help clarify the appropriate values to use for ultraviolet transitions in Cu ii, we report lifetimes from our beam-foil experiments. The Cu ii results for the 1358.7...
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ژورنال
عنوان ژورنال: Symposium - International Astronomical Union
سال: 1987
ISSN: 0074-1809
DOI: 10.1017/s0074180900153872