Quasiperiodic variations of the H-alpha emission line in the Beta Lyrae system

Details Quasiperiodic variations of the H-alpha emission line in the Beta Lyrae system Quasiperiodic variations of the H-alpha emission line in the Beta Lyrae system

Oct 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980sval....6..307b&link_type=abstract

(Pis'ma v Astronomicheskii Zhurnal, vol. 6, Sept.-Oct. 1980, p. 587-591.) Soviet Astronomy Letters, vol. 6, Sept.-Oct. 1980, p.

Astronomy and Astrophysics

Astronomy

2

Eclipsing Binary Stars, H Alpha Line, Interstellar Gas, Light Curve, Stellar Spectra, Stellar Spectrophotometry, Variable Stars, A Stars, B Stars, Line Spectra

Scientific paper

Narrow-band photometry of the close binary system Beta Lyr in the H-alpha line, together with absolute calibration, reveals quasi-periodic fluctuations in the emission of the gaseous circumstellar structures. The radiation flux varies by a factor of 1.5, with a quasi-period equal to 1/7 the orbital period. The effective radius of the gaseous ring surrounding the massive component of the system is estimated to be 1/3 the distance between the center of the two stars.

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