Spectrophotometry of intermediate-redshift quasars

Details Spectrophotometry of intermediate-redshift quasars Spectrophotometry of intermediate-redshift quasars

Sep 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984apj...284..497u&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 284, Sept. 15, 1984, p. 497-511. Research supported by the University of Te

Astronomy and Astrophysics

Astrophysics

52

Astronomical Spectroscopy, Quasars, Red Shift, Spectrophotometry, Absorption Spectra, Abundance, Emission Spectra, Spectral Line Width, Variability

Scientific paper

Measurements of the spectra of six intermediate-redshift quasars were made with a self-scanned Digicon detector. Emission lines were used to measure the C:N:O ratio with the result that this ratio is solar except for a slight nitrogen enhancement in two of the quasars. Intensity measurements of weak emission lines, including some due to iron, were also made. Gaskell's discovery of a redshift discrepancy between the high- and low-ionization lines is confirmed, but an unusual narrow-lined object, PKS 1148 - 001, appears not to show it. Although the data were of low resolution, some useful absorption-line measurements were also made, especially for the quasar 1421 + 330 (Markarian 679).

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