Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 1977
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977a%26a....56..181k&link_type=abstract
Astronomy and Astrophysics, vol. 56, no. 1-2, Apr. 1977, p. 181-188. Research supported by the Israel Commission for Basic Rese
Astronomy and Astrophysics
Astrophysics
Binary Stars, Kinematics, Novae, Spectroscopic Analysis, Stellar Models, Absorption Spectra, Astronomical Models, Emission Spectra, Light Curve, Line Spectra, Stellar Mass Ejection, Stellar Spectra
Scientific paper
Identifications of emission lines in the spectrum of Nova Cyg 1975, observed at the Wise Observatory between August 31, 1975 and June 7, 1976 are given. Wavelength measurements of emission and absorption features are interpreted on the basis of a binary model for the star. We suggest that the ejection of material from the nova took place in three distinct major events. At least two of these events were of a very short duration, of the order of an hour and had an axial but not a higher symmetry. With a few simplifying assumptions we estimate a few parameters of the binary system. We discuss the possibility of generalizing the model for the explanation of observations in other novae, comparing it to some other models that have been proposed for novae ejection.
Kupo I.
Leibowitz Elia M.
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