J/PASP/97/932 J/PASP/97/932 3CR Source Identifications H Spinrad S Djorgovski J Marr L Aguilar Publ. Astron. Soc. Pac. 97 932 1985 1985PASP...97..932S Radio sources Redshifts This catalog contains the third major update of new optical and radio data for the strong sources in the Revised Third Cambridge Catalogue (3CR). Positions, redshifts, magnitudes, and identifications are included, as well as some radio data for 298 3CR sources.

3CR 3CR catalog number This columns gives the catalog number in the Revised 3CR Catalog of Radio Sources. --- RAh Right Ascension 1950 - hours h RAm Right Ascension - minutes min RAs Right Ascension - seconds s DE- Declination sign --- DEd Declination 1950 - degrees deg DEm Declination - arc minutes arcmin DEs Declination - arc seconds arcsec V V visual magnitude These columns contain information about the visual magnitude of the source. The mv column lists the visual magnitude of the object. If the mv is given in an even 0.5-magnitude interval, it has normally been estimated from the Palomar Sky Survey or direct photographic plates and therefore carries substantial errors (+/- 0.5-1.0 magnitude). An asterisk in the mvar_flg column indicates variability in mv with amplitude greater than 0.1 magnitude. mag Vflag [* ] variable magnitude flag --- z redshift --- S(178) flux density at 178 MHz from Kellerman et al Jy Alph spectral index These columns give information on the spectral index of the source. The spectral index given typically between 38 MHz and 750 MHz (see flags listed below) and is taken from Kellermann et al. (1969). The spectral index is defined as S prop. nu^(-alpha). --- b galactic lattitude --- r_ID reference for optical position The values refer to these references by number, and concern the origin of the optical identification, redshift, and radio map. --- r_z reference for redshift --- r_Radio reference for radio position --- notes Remarks on source This column gives additional information about the optical identification. For the optical identification we have generally listed the first published ID with a good finding chart. In cases where a previous paper without a good finding chart published the same ID or where the ID was confirmed by a subsequent, more detailed study, these references are listed under this column. In addition to listing additional information and redshift references, the remarks column gives other names (such as NGC number) and the character of the optical spectrum of radio galaxies using the following abbreviations: SE strong emission lines E emission lines present but not necessarily strong WE weak emission lines ABS only stellar absorption features are seen ABS remarks for QSOs indicates the presence of absorption features at one or more redshifts. Abbreviations used here include: CL cluster EF empty field FC finding chart G galaxy ID identification N NGC Q QSO SP spectrophotometry X indicates that the reference number preceding gives an incorrect * probable or possible identification or redshift --- ID IDentification of source These columns give information about the optical identification. The following abbreviations are used in the id column: B: BL Lac Object G: Galaxy N: N Galaxy Q: QSO --- RefID Reference identification number --- RefText Reference text --- N.P.M. Kuin ADC/SSDOO/NASA 1995Feb14 UNKNOWN UNKNOWN The data were provided to the ADC on 1993-07-20 by Mark Dickinson for Hy i Spinrad. The documentation was updated with documentation written by D.E. Harris of SAO for the ADS version of this catalog. The ADS version includes extra fields: a Red Magnitude flag, a spectral index flag, and an identification flag. This catalog is also in the Andernach radio catalog archive as A035. J_PASP_97_932.xml