Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985pasp...97.1129o&link_type=abstract
Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 97, Dec. 1985, p. 1129-1141.
Astronomy and Astrophysics
Astronomy
88
Infrared Astronomy, Infrared Astronomy Satellite, Optical Emission Spectroscopy, Red Shift, Seyfert Galaxies, H Ii Regions, Line Spectra, Radiant Flux Density, Spectral Line Width
Scientific paper
Redshifts, relative emission-line-intensity measurements, and optical spectral classifications are presented for 30 galaxies selected by the IRAS observers as Seyfert candidates on the basis of their infrared properties. The authors confirm earlier results that a large number of these objects are indeed previously unknown Seyfert galaxies, most of them Seyfert 2s. These IRAS Seyfert 2 galaxies as a group are at relatively small redshift, and thus represent a low-luminosity tail of the Seyfert galaxy luminosity function. There are in addition a significant number of Liners among them, as well as H II region galaxies. Many of the IRAS Seyfert 2 and H II region galaxies have line spectra that are significantly more heavily reddened than samples of previously known objects of these types.
de Robertis Michael M.
Osterbrock Donald E.
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