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Lα Radiation and CaII Ionization in the TYPE II Supernovae at Late Times

Published online by Cambridge University Press:  12 April 2016

Nikolai N. Chugai
Nikolai N. Chugai*
Affiliation:
Astronomical Council of the Academy of Sciences of the USSR Pjatnitskaja 48, Moscow 109071, USSR

Abstract

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The ionization of CaII by the Lα quanta in the envelope of the type II supernova 1970g on 270th day is considered. The ratio CaII/CaIII is found to be very low (<0.1). This results in the low theoretical intensities of the CaII emission lines; they are at least an order of magnitude weaker than the observed ones. The implications are discussed.

Type
Part III. Chemical and Dynamical Structures of Exploding Stars
Information
International Astronomical Union Colloquium , Volume 108: Atmospherics Diagnostics of Stellar Evolution: Chemical Peculiarity, Mass Loss, and Explosion , 1988 , pp. 415 - 416
Copyright
Copyright © Springer-Verlag 1988

References

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