Non-LTE effect and formation of hydrogen lines in the atmosphere of type II supernovae

Details Non-LTE effect and formation of hydrogen lines in the atmosphere of type II supernovae Non-LTE effect and formation of hydrogen lines in the atmosphere of type II supernovae

Aug 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990a%26a...234..343t&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 234, no. 1-2, Aug. 1990, p. 343-354.

Astronomy and Astrophysics

Astrophysics

3

H Alpha Line, H Beta Line, Nonequilibrium Thermodynamics, Paschen Series, Spectral Line Width, Stellar Atmospheres, Supernovae, Hydrogen, Linearization, Lyman Spectra, Newton-Raphson Method

Scientific paper

Non-LTE (continuum + H-alpha + H-beta + P-alpha) spherically expanding radiative equilibrium model atmospheres composed of pure hydrogen are constructed. The atmospheres simulate type II supernovae characterized by a relatively high temperature prior to the recombination phase. The effect of non-LTE on the temperature structure is studied as well as the presence of a large differential velocity field, the line formation mechanism of hydrogen lines, and the sensitivity of line spectra to the temperature distribution.

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