Theoretical quasar emission-line ratios. V - Balmer continuum emission

Details Theoretical quasar emission-line ratios. V - Balmer continuum emission Theoretical quasar emission-line ratios. V - Balmer continuum emission

Sep 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982apj...260...44p&link_type=abstract

Astrophysical Journal, Part 1, vol. 260, Sept. 1, 1982, p. 44-55.

Mathematics

Probability

8

Balmer Series, Emission Spectra, Line Spectra, Quasars, Continuous Spectra, Radiative Transfer, Seyfert Galaxies

Scientific paper

Isothermal, isobaric models of quasar emission line regions are presented which include an improved treatment of radiative transfer in the bound-free continua, based on a generalization of frequency-integrated line transfer techniques and on the use of a probabilistic radiative transfer equation which explicitly distinguishes between the flux divergence coefficient and the photon escape probability. It is found that Balmer continuum emission can be obtained without compromising observed line ratios. It is also established that optically thin or thick Balmer continuum emission models with blended Fe II line are consistent with 4000-2000 A 'blue bump' observations, and that the improved radiative transfer treatment makes order-of-magnitude corrections to level populations and local cooling rates calculated with past techniques.

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