Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 1977
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977sval....3..241c&link_type=abstract
(Pis'ma v Astronomicheskii Zhurnal, vol. 3, Oct. 1977, p. 448-451.) Soviet Astronomy Letters, vol. 3, Sept.-Oct. 1977, p. 241-24
Astronomy and Astrophysics
Astronomy
2
Electron Scattering, Line Spectra, Stellar Envelopes, Stellar Spectra, Supernovae, Thomson Scattering, Emission Spectra, H Alpha Line, Incoherent Scattering, Optical Thickness
Scientific paper
The possibility is investigated of observing in supernova spectra an effect associated with the incoherency of electron scattering in the expanding supernova shell. The effect of electron scattering on an emission-line profile is examined in the limiting cases of single and multiple electron scattering in homogeneous and freely expanding type I and type II supernova shells. Observations of the H-alpha line in the spectrum of supernova 1970g are discussed which indicate a redshift that is probably associated with electron scattering. It is concluded that if this redshift is actually due to electron scattering, the shell of supernova 1970g is quite homogeneous; i.e., the filling factor in the shell is of the order of unity.
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