The pure rotation spectrum of the hydroxyl radical and the solar oxygen abundance

Details The pure rotation spectrum of the hydroxyl radical and the solar oxygen abundance The pure rotation spectrum of the hydroxyl radical and the solar oxygen abundance

May 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983mnras.203..767g&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 203, May 1983, p. 767-776. Research supported by the Ro

Astronomy and Astrophysics

Astronomy

19

Abundance, Hydroxyl Radicals, Molecular Spectra, Oxygen Spectra, Rotational Spectra, Solar Spectra, Atmospheric Models, Cosmochemistry, Oscillator Strengths, Photosphere, Spectral Line Width

Scientific paper

Observations of pure rotation 2pi (0-0) lines of the hydroxyl radical in the solar photospheric spectrum provide a new and independent determination of the solar oxygen abundance. These OH lines with the Holweger-Mueller (1974) model atmosphere give log epsilon (O) = 8.84, which is within 0.08 dex of the abundance provided by the O I forbidden lines and the same model. It is pointed out that a detection of the CH pure rotation lines would permit a determination of the O/C abundance ratio with a much reduced sensitivity to the model atmosphere uncertainties. Selected combinations of atomic and molecular (not including the OH pure rotation lines) lines give log epsilon (O)/epsilon (C) = 0.23 + or - 0.03 dex.

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