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The eclipse of CI Cygni in 1980 on the objective prism spectra

Published online by Cambridge University Press:  12 April 2016

J. Mikołajewska  and
M. Mikołajewski
J. Mikołajewska
Affiliation:
Institute of Astronomy Nicolaus Copernicus, University Toruń, Poland
M. Mikołajewski
Affiliation:
Institute of Astronomy Nicolaus Copernicus, University Toruń, Poland

Extract

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The observations of CI Cyg were carried out with the Toruń 60/90 cm Schmidt telescope with the objective prism giving a dispersion of 250 A/mm at H-gamma. Intensity traces of 20 selected spectra , made on the Kodak IIa-O plates, were made. The results were corrected for all instrumental effects and the interstellar extinction. The relative emission lines intensities have been obtained from the tracings after normalization to H-beta = 100.

The spectra were typical for the quiet symbiotic star. So, all changes in the spectrum were caused by geometrical effects (eclipse).

Type
Session II – Discussion on Individual Stars
Information
International Astronomical Union Colloquium , Volume 70: The Nature of Symbiotic Stars , 1982 , pp. 147 - 148
Copyright
Copyright © Reidel 1982

References

Boyarchuk, A.A., Gershberg, R.E., Pronik, V.I., 1963, Isvestia Crimea, 29, 291 Google Scholar
Iijima, T., 1981a, in Photometrie and Spectroscopic Binary Systems D.Reidel Pubi.Co., 517–534 Google Scholar
Iijima, T., 1981b, Astron. Astrophys., 94, 290 Google Scholar