Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994aj....107.1283m&link_type=abstract
The Astronomical Journal, vol. 107, no. 4, p. 1283-1290
Astronomy and Astrophysics
Astronomy
10
Astronomical Catalogs, Data Reduction, Line Spectra, Quasars, Seyfert Galaxies, Sky Surveys (Astronomy), Spectrum Analysis, Starburst Galaxies, Astronomical Coordinates, Emission Spectra, Radio Spectroscopy, Red Shift, Schmidt Telescopes
Scientific paper
Slit spectra have been obtained at Lick Observatory of 18 Seyfert galaxy candidates from the Second Byurakan Spectral Sky Survey (SBS). The great majority of them turned out to be Seyfert galaxies. The classifications and redshifts of all the galaxies are reported. Measurements ofthe intensity ratios of the emission lines used in classifying the galaxies are tabulated and plotted on diagnostic diagrams. The spectra of seven of the galaxies are described in detail. In general, our classification and redshift measurements are in very good accord with those of Lipovestsky, Stepanian, and their collaborators at the Special Astrophysical Observatory, showing that their results can be used in conjunction with the Lick results with little if any systematic differences between the two data sets. The importance of the SBS as a source of new Seyferts bridging the gap between low-redshift Seyfert galaxies and higher luminosity Quasi-Stellar Objects (QSOs) is also emphasized.
Martel Andre
Osterbrock Donald E.
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