Optical spectra of radio galaxies

Details Optical spectra of radio galaxies Optical spectra of radio galaxies

Mar 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978apj...220..783g&link_type=abstract

Astrophysical Journal, Part 1, vol. 220, Mar. 15, 1978, p. 783-789.

Mathematics

Logic

135

Emission Spectra, Galactic Structure, Line Spectra, Radio Galaxies, Spectrophotometry, Galactic Radiation, H Alpha Line, H Beta Line, Luminous Intensity, Seyfert Galaxies

Scientific paper

Based on Lick image-tube-image-dissector scans of 35 radio galaxies known to have emission lines, a high degree of association is found between the spectroscopic classification 'broad-line' and the morphological classification 'N.' Relative line intensities are presented for nine broad-line radio galaxies (BLRG). These data, combined with previously published results, illustrate three spectroscopic differences between BLRG and Seyfert 1 galaxies: BLRG have much weaker Fe II emission, steeper H-alpha/H-beta ratios, and larger 5007-A forbidden O III/H-beta ratios than Seyfert 1 galaxies.

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