Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991a%26a...242...49j&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 242, no. 1, Feb. 1991, p. 49-57. CNRS-supported research.
Astronomy and Astrophysics
Astronomy
56
Active Galactic Nuclei, Emission Spectra, Metallicity, Radio Emission, Spectral Line Width, Balmer Series, Galactic Structure, Iron, Luminous Intensity, Radio Sources (Astronomy)
Scientific paper
Fe II and radio data have been obtained and analyzed for a sample of about 100 Seyfert 1 galaxies, quasars, and broad line region (BLR) galaxies. The results show that the anticorrelation commonly thought to exist between the strength of the Fe II emission and the radio luminosity is not present, but that there is a weak correlation between Fe II and the radio luminosity of the central compact source. The difficulties of reconciling these correlations with the BLR hypothesis are pointed out, and it is suggested that the Fe II emission is closely related to the compact radio source. It is shown how this scenario can explain the correlation between Fe II/H-beta and the radio core luminosity and why the most intense Fe II emitters are radio quiet.
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