A statistical study of properties of Seyfert and starburst galaxies.
Abstract
Spectral and morphological data for 282 Seyfert and emission-line galaxies spanning radio to X-ray wavelengths are compiled. The data include a large number of optical emission-line measurements which have not been reported previously. These data are intended to provide a convenient summary of the relevant properties of these galaxies, as well as a data base to search for correlations among the various parameters in order to obtain a better understanding of the active galaxy phenomenon. In this paper we present the data and analyze the distribution of various properties of Seyfert 1 and Seyfert 2 galaxies and starburst galaxies. We confirm previously known similarities and differences between the two main Seyfert types, and find that Seyfert 2s have a higher 60 micron/[O III] λ5007 flux ratio than Seyfert 1s. This result, combined with the fact that Seyfert 2s are more heavily reddened, indicate that they have a higher dust content. We also find that starburst nuclei are comparable to Seyfert 2s in far-infrared and 20 cm luminosities, although their optical spectra are markedly different.
- Publication:
-
The Astrophysical Journal Supplement Series
- Pub Date:
- July 1988
- DOI:
- 10.1086/191273
- Bibcode:
- 1988ApJS...67..249D
- Keywords:
-
- Galactic Radiation;
- Radio Galaxies;
- Seyfert Galaxies;
- Starburst Galaxies;
- Statistical Analysis;
- Astronomical Catalogs;
- Emission Spectra;
- Oxygen Spectra;
- Star Formation;
- Astrophysics