Other
Scientific paper
Feb 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979apj...228..220v&link_type=abstract
Astrophysical Journal, Part 1, vol. 228, Feb. 15, 1979, p. 220-223.
Other
21
O Stars, Periodic Variations, Radial Velocity, Stellar Spectra, Stellar Winds, Variable Stars, Absorption Spectra, Helium, Line Spectra, Oxygen, Silicon
Scientific paper
Coude spectrograms covering 2 separate weeks of observations, and a few other items, were measured for radial velocities. There appears to be a variability in the He II absorption lines of the same velocity amplitude as discussed by Hutchings, but we could not confirm his period of 4.6 days, which has been attributed to binary motion. A possible periodicity near 1 day is found from all the He II data, but it may be spurious. The narrow O III absorption and Si III emission lines show no velocity variation. The apparent He II radial velocity changes may be due only to random line profile variations in the stellar wind of this Of star.
Conti Peter S.
Vreux Jean-Marie
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