Gross ultraviolet spectral variability in HD 45166 (qWR + B8V)

Details Gross ultraviolet spectral variability in HD 45166 (qWR + B8V) Gross ultraviolet spectral variability in HD 45166 (qWR + B8V)

Sep 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986esasp.263..335w&link_type=abstract

In ESA Proceedings of an International Symposium on New Insights in Astrophysics. Eight Years of UV Astronomy with IUE p 335-33

Astronomy and Astrophysics

Astrophysics

1

Stellar Spectra, Ultraviolet Spectroscopy, Variability, Wolf-Rayet Stars, Absorption Spectra, Iue, Photosphere, Stellar Winds

Scientific paper

High resolution IUE SWP spectra of HD 45166 were secured at various epochs over 1980 to 1983. Data confirm dramatic variations in the qWR P-Cygni profiles and emission lines reported by Willis and Stickland (1983), and reveal large changes also in the qWR highly ionized photospheric absorption spectrum. No changes are apparent in the UV-optical continuum. A common physical origin for the qWR photospheric and stellar wind changes, which may be linked to variations in the ionizing EUV flux into both stellar regions, is suggested.

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