The time variation of broad emission-line profiles of Seyfert 1 galaxies

Details The time variation of broad emission-line profiles of Seyfert 1 galaxies The time variation of broad emission-line profiles of Seyfert 1 galaxies

Oct 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982apj...261...35c&link_type=abstract

Astrophysical Journal, Part 1, vol. 261, Oct. 1, 1982, p. 35-41.

Astronomy and Astrophysics

Astrophysics

66

Emission Spectra, Seyfert Galaxies, Spectral Line Width, Doppler Effect, H Beta Line, Spectrum Analysis

Scientific paper

Broad-line profiles have been calculated for models of the emitting region of Seyfert 1 galaxies in which the emitting clouds are in radial outflow. The continuum source is assumed to vary on a time scale a bit shorter than the light-travel time through the broad-line emitting region. The combination of a variable continuum source and light-travel time considerations produces the following effects: the calculated profiles have considerable structure which is introduced by continuum variations; the calculated profiles can be asymmetric in the sense often observed in Seyfert 1 spectra even if the clouds are assumed to emit line radiation isotropically; and the variation of the H-beta profiles of Arakelian 120 is roughly reproduced by the calculations.

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