Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1976
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976pasp...88..899b&link_type=abstract
Astronomical Society of the Pacific, Publications, vol. 88, Dec. 1976-Jan. 1977, p. 899-904.
Astronomy and Astrophysics
Astronomy
4
Eclipsing Binary Stars, Stellar Spectrophotometry, Ultraviolet Spectra, Variable Stars, Oao, Spaceborne Astronomy, Stellar Atmospheres
Scientific paper
Spectrophotometric scans of Beta Lyrae over the wavelength range from 1100 to 3700 A are analyzed which were obtained at different times with different resolutions by the OAO 2 satellite and from the ground. A model atmosphere with normal H and He abundances, an electron temperature of 11,000 K, and log g of 3.0 is found to fit the visual region of the spectrum well but to be a poor representation in the Balmer continuum. It is shown that a large complex emission feature dominates the spectrum from about 1700 to 2200 A, that there is a very pronounced strengthening of the spectrum just shortward of the 1550-A C IV feature at phase 0.69, and that the overall level of the spectrum shortward of 1400 A is quite high in comparison with the broad emission feature. A model is discussed in which the light from a disk-shaped secondary is highly concentrated toward the polar regions.
Bless Robert C.
Eaton Joel A.
Meade Marilyn R.
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