Changes of the profiles of spectral lines due to mass transfer in close binaries |
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| Authors: | Zdislav ?íma |
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| Institution: | (1) Dept. of Astronomy and Astrophysics, Charles University, Prague, Czechoslovakia |
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| Abstract: | In this paper, the model of the ring envelope round the primary component and the stream of the gaseous mass flowing from
the secondary component to the primary is constructed on the basis of theoretical computations concerning the exchange of
the mass between the components of the binary. The paper studies the influence of the gaseous mass on the profiles of spectral
lines before and after occultation; the influence of the stream on the profile in case the secondary is near elongation, is
also investigated. The line profiles obtained by numerical computations show that their changes caused by outflowing mass
should be well detectable from spectrograms taken at particular phase of the binary. Changes in the lines may influence the
measurement of radial velocities. The method for distinguishing the influence of the stream from the influence of the ring
is described. |
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