Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992mamea...4...92a&link_type=abstract
Sankt-Peterburgskii Universitet, Vestnik, Seriia 1 - Matematika, Mekhanika, Astronomiia (ISSN 0024-0850), no. 4, p. 92-96.
Astronomy and Astrophysics
Astronomy
Emission Spectra, H Alpha Line, Line Shape, Stellar Envelopes, Supernova 1987A, Spectral Line Width, Stellar Models
Scientific paper
A spherically symmetric isotropically expanding model of the SN 1987A envelope is constructed by comparing the observed H-alpha, Ca II 8600, forbidden Ca II 7300, and forbidden O I 6300 lines in the SN 1987A spectra with those calculated theoretically by the Sobolev method. A conclusion is made about the presence of a stratification of the chemical composition within the envelope. The electron temperature and the electron concetration distribution are determined for the inner and outer zones.
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