On the wavelength dependence of rotational line broadening

Details On the wavelength dependence of rotational line broadening On the wavelength dependence of rotational line broadening

May 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977apj...213..787s&link_type=abstract

Astrophysical Journal, Part 1, vol. 213, May 1, 1977, p. 787-790.

Astronomy and Astrophysics

Astrophysics

16

B Stars, Line Spectra, Spectral Line Width, Stellar Rotation, Stellar Spectra, Far Ultraviolet Radiation, Ultraviolet Spectra, Wavelengths

Scientific paper

Differences in ultraviolet and visual rotational-line broadening have been investigated for rapidly rotating B stars. Preliminary calculations for the 1113-A Si III and 4481-A Mg II lines indicate that half-intensity widths deviate significantly from that expected in the Struve (1929) model. These rotational half-width variations thus provide a sensitive probe with which to test basic assumptions of stellar rotation theory. The model dependence of observed rotation parameters is discussed.

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