Astronomy and Astrophysics – Astrophysics
Scientific paper
Aug 1976
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976a%26a....50..335h&link_type=abstract
Astronomy and Astrophysics, vol. 50, no. 3, Aug. 1976, p. 335-342.
Astronomy and Astrophysics
Astrophysics
17
Binary Stars, Spaceborne Astronomy, Stellar Envelopes, Stellar Spectrophotometry, Td Satellites, Ultraviolet Spectra, Astrophysics, Esa Satellites, Light Curve, Stellar Models
Scientific paper
An investigation of scans of Beta Lyrae with the S 2/68 and S 59 experiments aboard the satellite TD-1A confirms the model accepted so far with the addition that the emitting regions of C IV, and probably of Si IV, are located in the circumstellar envelope which surrounds the secondary component, and that the Fe III emission originates within the expanding outer envelope which surrounds the whole system. The violet absorption borders of the Mg II doublet and of the Fe III emissions yield velocities which agree with those derived from the lines of the triplet series of He I in the optical and near infrared regions, and reflect the velocity of expansion of the outermost layers of the thin envelope in which the stars are embedded.
de Jager Cornelis
Hack Margherita
Hoekstra Roel
Sahade Jorge
van den Heuvel Edward Peter Jacobus
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