Astronomy and Astrophysics – Astrophysics
Scientific paper
Jun 1977
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977sva....21..275b&link_type=abstract
(Astronomicheskii Zhurnal, vol. 54, May-June 1977, p. 488-493.) Soviet Astronomy, vol. 21, May-June 1977, p. 275-278. Translati
Astronomy and Astrophysics
Astrophysics
9
Novae, Stellar Envelopes, Stellar Models, Stellar Spectrophotometry, Astrophysics, Cygnus Constellation, Emission Spectra, Line Spectra
Scientific paper
A simple quantitative model of a nova shell is developed which consists of an equatorial ring and two polar caps. It is shown that such a model will give two-, three-, or four-peak emission-line profiles, depending on its spatial orientation, and that all these types of profile have actually been observed for various novae. Spectral and photometric observations of Nova Cygni 1975 are analyzed in the framework of this model. It is concluded that the angle between the plane of the equatorial ring of that nova's shell and the direction to earth is about 60 deg and that the ratio of the ring's outer diameter to its thickness is between 5 and 10.
Boiarchuk A. A.
Gershberg Roald E.
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