Astronomy and Astrophysics – Astrophysics
Scientific paper
Sep 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993apj...414..552o&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 414, no. 2, p. 552-562.
Astronomy and Astrophysics
Astrophysics
102
Active Galactic Nuclei, Astronomical Spectroscopy, Emission Spectra, Extragalactic Radio Sources, Galactic Structure, Seyfert Galaxies, Classifying, H Alpha Line, H Beta Line, H I Regions, Luminosity, Spectrophotometry
Scientific paper
High SNR spectra were obtained of nearly all the Seyfert 2 galaxies in the CfA complete sample published by Huchra and Burg (1992) and of some of the Seyfert 1's as well. Luminosity functions and mean absolute magnitudes were calculated separately for each type and for various groupings of the types. Our spectra confirm Huchra and Burg's conclusion that the CfA sample contains a higher fraction of Seyfert 1's than the Wasilewski sample, which therefore appears to be deficient in faint reddened Seyfert 1 galaxies. Specific geometrical models and evolutionary pictures of AGNs are discussed. All Seyfert 1.8, 1.9, and 2 galaxy spectra were measured spectrophotometrically, and all, when plotted in diagnostic diagrams, lie in the AGN regions except for two objects barely outside the region on one diagram. These good SNR spectra confirm that, as suspected earlier, many Seyfert 1.8, 1.9, and 2 galaxies have weak forbidden Fe X 6735 A emission in their spectra. The broad components of the Seyfert 1.8 and 1.9 galaxies have large H-alpha/H-beta intensity ratios, extending previous similar results.
Martel Andre
Osterbrock Donald E.
No associations
LandOfFree
Spectroscopic study of the CfA sample of Seyfert galaxies does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Spectroscopic study of the CfA sample of Seyfert galaxies, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spectroscopic study of the CfA sample of Seyfert galaxies will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1560342