Observations of Of-star wind variability

Details Observations of Of-star wind variability Observations of Of-star wind variability

Aug 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983apj...271..691g&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 271, Aug. 15, 1983, p. 691-701.

Astronomy and Astrophysics

Astronomy

22

O Stars, Stellar Winds, Ultraviolet Astronomy, Iue, Line Spectra, Resonance Lines

Scientific paper

Nightly variations in He II λ4686 have been observed in four Of stars, HD 152408, HD 151804, 9 Sge, and λ Cep. Three of the stars were not previously known to show such variations. In one case, λ Cep, simultaneous observations with IUE showed variations in ultraviolet resonance-line profiles during the same time period as those in He II λ4686. This implies that the perturbations causing the He II λ4686 variability affect the entire wind acceleration zone.

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