Identification of the lambda 6667.4, 6701.3 emission doublet in the spectra of O supergiants

Details Identification of the lambda 6667.4, 6701.3 emission doublet in the spectra of O supergiants Identification of the lambda 6667.4, 6701.3 emission doublet in the spectra of O supergiants

Jan 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989pasp..101..118f&link_type=abstract

Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 101, Jan. 1989, p. 118-121. Research supported by NSERC

Astronomy and Astrophysics

Astronomy

4

Electron Transitions, Emission Spectra, Stellar Spectra, Supergiant Stars, Nonequilibrium Thermodynamics, O Stars, Silicon, Stellar Winds

Scientific paper

The 6667.4-A, 6701.3-A doublet observed to be in emission in the spectra
of late-O supergiants is identified with the Si IV 5p 2Po-5d 2D
transition on the basis of the observed wavelengths, intensity ratios,
and theoretical non-LTE predictions. The emission mechanism is discussed
qualitatively.

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