Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 1978
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978apj...225..780h&link_type=abstract
Astrophysical Journal, Part 1, vol. 225, Nov. 1, 1978, p. 780-783.
Astronomy and Astrophysics
Astronomy
23
Luminous Intensity, Seyfert Galaxies, Spectrophotometry, Emission Spectra, Galactic Clusters, H Beta Line, Infrared Astronomy, Red Shift
Scientific paper
Spectrophotometry of three galaxies discovered by Fairall (1977) is presented. Both Fairall 9 and Fairall 51 are found to be Seyfert 1 galaxies. Although Fairall 5 was suspected of having emission lines, none were detected. Both F9 and F51 appear to be members of loose clusters, and the redshift of F9 agrees with the redshift of a galaxy 30 arcsec away. The H-beta luminosity of F9 is larger than that of any other Seyfert 1 galaxy and is in fact more characteristic of QSOs; F51 has an unusually small H-beta luminosity. Infrared observations in addition to the optical data imply a large bolometric luminosity for F9. The large luminosity of F9 suggests that the physical processes operating in Seyfert 1 galaxies can also produce the energies inferred for QSOs.
Hawley Steven A.
Phillips Marcia
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