An Optical Catalog of Extragalactic Emission-Line Objects Similar to Quasi-stellar Objects
Abstract
A catalog of 935 galaxies which have optical properties similar to those of QSOs is given. A subsidiary table of cross-identifications enables the reader to relate the name of a given object to its coordinate name. Most of the objects appear to be nonstellar. The majority, more than 700, have redshifts z <= 0.2, and have mostly been classified as Seyfert galaxies, N systems, or radio galaxies. The Hubble diagram for all of the objects with z <= 0.2 is shown. The redshift distribution peaks at z ~0.025, but there are about 200 powerful radio galaxies in the extended tail of the distribution which have z > 0.2. There is a separate and distinct peak in the redshift distribution at z = 0.06.
- Publication:
-
The Astrophysical Journal Supplement Series
- Pub Date:
- February 1991
- DOI:
- Bibcode:
- 1991ApJS...75..297H
- Keywords:
-
- Astronomical Catalogs;
- Emission Spectra;
- Line Spectra;
- Quasars;
- Red Shift;
- Seyfert Galaxies;
- Extragalactic Radio Sources;
- Hubble Diagram;
- Radio Galaxies;
- Astronomy;
- GALAXIES: REDSHIFTS;
- GALAXIES: SEYFERT;
- QUASARS