Optical spectra and redshifts of quasi-stellar radio sources in the NRAO 5 GHz and 4C radio catalogs.
Abstract
Spectroscopic observations of quasar candidates in the S 1, S2, and I catalogs of the NRAO S GHz survey yield 33 confirmed quasars with redshifts ranging from 0.46 to 2.43. The redshift of 0421 + Ol is 2.048, rather than the value 0.689 given in the literature. Also reported are spectroscopic observations of four quasi-stellar sources in the 20Th400 declination zone of the 4C catalog. Subject headings: galaxies: redshifts - quasars
- Publication:
-
The Astrophysical Journal
- Pub Date:
- October 1977
- DOI:
- Bibcode:
- 1977ApJ...217..358S
- Keywords:
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- Astronomical Catalogs;
- Astronomical Spectroscopy;
- Quasars;
- Red Shift;
- Absorption Spectra;
- Emission Spectra;
- Line Spectra;
- Tables (Data);
- Astrophysics