Astronomy and Astrophysics – Astrophysics
Scientific paper
Oct 1977
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977azh....54..996n&link_type=abstract
Astronomicheskii Zhurnal, vol. 54, Sept.-Oct. 1977, p. 996-1008. In Russian.
Astronomy and Astrophysics
Astrophysics
7
Astrophysics, Stellar Evolution, Stellar Models, Supernovae, Energy Transfer, Kinematics, Light Curve, Shock Wave Generators, Stellar Envelopes, Stellar Luminosity, Stellar Mass Ejection, Stellar Spectra
Scientific paper
Supernova models that assume slow energy release are considered. It is shown that the main characteristics of a supernova near maximum light depend slightly on the chemical composition of the shell and are practically independent of the means of energy release within the star, but are governed by the amount of energy released and the characteristic time scale for energy release. A strong dependence of computed supernova characteristics on the mass of the ejected shell is established, and a working model of a type I supernova is proposed. The main stages in this model's evolution are: (1) generation of a primary shock wave and formation of a relatively low-mass supernova atmosphere that has a large velocity gradient and controls the supernova line spectrum; (2) slow energy release, leading to ejection of a thin 0.5-solar-mass shell that is responsible for the 'dome' in the light curve and the supernova continuum; and (3) luminosity in the exponential tail of the light curve associated with activity of the central remnant.
Nadezhin D. K.
Utrobin Victor P.
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