Observations of quasars with the International Ultraviolet Explorer satellite

Details Observations of quasars with the International Ultraviolet Explorer satellite Observations of quasars with the International Ultraviolet Explorer satellite

Jul 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980apj...239..483g&link_type=abstract

Astrophysical Journal, Part 1, vol. 239, July 15, 1980, p. 483-494.

Astronomy and Astrophysics

Astrophysics

115

Emission Spectra, Intergalactic Media, Iue, Quasars, Stellar Spectrophotometry, Ultraviolet Spectra, Balmer Series, Cosmic Gases, Gas Ionization, Line Spectra, Lyman Spectra, Radiant Flux Density, Velocity Distribution

Scientific paper

The paper deals with the spectra of six quasars, ranging in redshift from 0.23 to 2.04, obtained with the 45-cm telescope mounted on the IUE satellite. The average emission-line intensity ratio for L-alpha to H beta and the detection of higher-order Lyman emission lines in two objects are found to be inconsistent with a simple optically thick recombination model. The Lyman and Balmer line velocity profiles are identical. The emission lines in 3C 351 can be decomposed into sharp and broad components, with the sharp lines consistent with the recombination model.

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