Abstract
We present optical spectra and redshifts for flat-spectrum radio sources taken from the second Caltech-Jodrell Bank VLBI sample. The sources were observed using the Faint Object Spectrograph on the Isaac Newton Telescope. We show optical spectra for 90 sources, out of a total of 101 observed; of the remaining 11 sources, nine were not detected, and two were misidentified. Definite redshifts have been determined for 60 sources, and a further seven have probable redshifts determined. Five sources are shown to have featureless BL Lac type spectra, and 18 sources are too weak to give a reliable redshift. © 1997 RAS.
| Original language | English |
|---|---|
| Pages (from-to) | 380-400 |
| Number of pages | 20 |
| Journal | Monthly Notices of the Royal Astronomical Society |
| Volume | 290 |
| Issue number | 2 |
| Publication status | Published - 1997 |
Keywords
- BL Lacertae objects: general
- Galaxies: distances and redshifts
- Galaxies: general
- Quasars: emission lines
- Quasars: general
- Radio continuum: general