Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982sva....26..683c&link_type=abstract
(Astronomicheskii Zhurnal, vol. 59, Nov.-Dec. 1982, p. 1134-1145) Soviet Astronomy (ISSN 0038-5301), vol. 26, Nov.-Dec. 1982, p.
Astronomy and Astrophysics
Astronomy
1
Line Spectra, Stellar Envelopes, Stellar Spectra, Supernovae, Density Distribution, H Alpha Line, Oxygen Spectra, Radial Velocity, Sodium, Stellar Models
Scientific paper
The analysis of the profiles of spectral lines in the envelopes of supernovae is important in connection with the study of the kinetic parameters characterizing the expansion velocities of the envelope material. In addition, a comparison of the theoretical and observed profiles makes it possible to obtain information about the physical conditions in the envelopes, and the various elements in the dispersing material of the supernova (SN). The present investigation is concerned with an analysis of the H-alpha, Na I lambda 5892, and O I lambda 6300 lines in the spectra of SN 1970g. An attempt was made to find the radial distribution of ionized hydrogen in an SN II envelope on the basis of the H-alpha profile. The results of a comparison of calculated and observed data are used to estimate certain kinematic parameters of SN 1970g, along with the masses and distributions of H II, Na, and O.
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