J/MNRAS/238/1171 J/MNRAS/238/1171 Optical/IR observ. of Radio Galaxies and QSOs J S Dunlop J A Peacock A Savage S J Lilly J N Heasley A J B Simon Mon. Not. R. Astron. Soc. 238 1171 1989 1989MNRAS.238.1171D VIII/15 : Parkes Radio Sources Catalogue (PKSCAT90) Galaxies, radio Photometry, infrared Photometry, UBVRI QSOs This catalog reports on an extensive optical and infrared study of the 178 radio sources in the Parkes Selected Regions (S > 100 mJy at 2.7 GHz). CCD observations have resulted in the essential completion (95 percent) of optical identifications and have provided B and R photometry. In addition, K photometry has been completed for four of the six selected regions.

Name IAU name of source number=1 This column gives the IAU name of the source, as given in the Parkes catalog (Cat.<VIII/15>). The source name is followed by an asterisk if the first interferometer observation of the sources was made by Downes et al. (1986MNRAS.218...31D). Sources which were revealed by the observations of Downes et al. to consist of several distinct sources have been labeled A, B, ... in order of increasing right ascension. Note that for sources 0223+018 and 1154-019 two optical counterparts are given, for which the radio data are simply repeated. This leads to a total of 180 rows for the 178 sources in this table. --- RAh Right Ascension (B1950) (hour) number=2 These columns give the B1950 right ascension and declination of the expected position for the optical identification. For unresolved or partly resolved sources this is the position of the radio peak. For doubles with central components the position of the central component has been used, while for doubles without central components the (unweighted) midpoint of the outer components is given. In D2 sources (see the struct column) the flat-spectrum component has been used. h RAm Right Ascension (B1950) (min) min RAs Right Ascension (B1950) (sec) s DE- Declination sign (B1950) --- DEd Declination (B1950) (deg) number=2 These columns give the B1950 right ascension and declination of the expected position for the optical identification. For unresolved or partly resolved sources this is the position of the radio peak. For doubles with central components the position of the central component has been used, while for doubles without central components the (unweighted) midpoint of the outer components is given. In D2 sources (see the struct column) the flat-spectrum component has been used. deg DEm Declination (B1950) (arcmin) arcmin DEs Declination (B1950) (arcsec) arcsec S2.7G Flux density at 2.7 GHz number=3 The 2.7 GHz flux density from the original survey is given in the "S2.7G" column (in Jy). The "f_S2.7G" column is marked with a colon (':') if the corresponding flux density was corrected by Downes et al. (1986MNRAS.218...31D) to allow for confusion. Jy f_S2.7G ':' if fluxes corrected for confusion --- Sp-Index Spectral index between 5 and 1.4 GHz number=4 The radio spectral index between 1.4 and 5 GHz is given in the "alpha" column. The "f_alpha" column is marked with a colon (':') if the spectral index is uncertain. Alpha is defined in the sense of S {prop.to} {nu}^-{alpha}^. --- u_Sp-Index ':' if spectral index is uncertain --- Struct Brief description of radio structure number=5 This column gives a brief description of the radio structure. The following abbreviations are used: U Unresolved. The flux density decreases by less than 10% on the longest baselines (d~25 km). P Partially resolved. The flux density decreases by more than 10% on the longest baselines, but no details of the structure are available. Do Double. CC Central component. Di Diffuse emission. V Variable. (1) indicates that variability was detected by Condon, Balonek, and Jauncey (1976AJ.....81..913C). D2 Flat-spectrum core and extended emission on one side only. H Diffuse halo. HT Head-tail structure. I/II Classification of the structure according to the scheme by Fanaroff and Riley (1974MNRAS.167P..31F) in which type II sources have hot spots separated by more than half the length of the source, while type I sources do not. --- ra_opt Last column of optical right asc. (B1950) number=6 These columns give the B1950 position of the optical identification. The positions are only given in the last unit (sec in right ascension and arcsec in declination). The larger units can be recovered from the radio source position. s dec_opt Last column of optical declination (B1950) number=6 These columns give the B1950 position of the optical identification. The positions are only given in the last unit (sec in right ascension and arcsec in declination). The larger units can be recovered from the radio source position. arcsec delta Offset between radio and optical positions number=7 This column gives the offset between the radio and optical positions, in arcsec. arcsec ID Optical classification number=8 This columns gives the optical identification as follows: Q Quasi-stellar, confirmed by spectroscopy, variability or colour (see the paper and Downes et al. 1986MNRAS.218...31D for details). Q? Stellar object on position, with colour classification suggesting it is probably a quasar. G Galaxy confirmed by image or colour. G? Faint object, possibly extended with colour classification suggesting it is probably a galaxy. EF Empty field. ? Uncertain optical classification. --- l_Bmag '>' if B magnitude is a lower limit --- Bmag Apparent B magnitude mag e_Bmag Uncertainty on B magnitude mag l_Rmag '>' if R magnitude is a lower limit --- Rmag Apparent R magnitude mag f_Rmag '?' if R magnitude is uncertain --- e_Rmag Uncertainty on R magnitude mag l_Kmag '>' if K magnitude is a lower limit number=9 These columns give the apparent K magnitude and associated uncertainty. l_Kmag is flagged with a greater-than symbol if the Kmag magnitude is a lower limit. f_Kmag is flagged with a '?' if the K magnitude is uncertain. f_Kmag is flagged with a '*' if the source was observed by Downes et al., 1986MNRAS.218...31D. --- Kmag Apparent K magnitude number=9 These columns give the apparent K magnitude and associated uncertainty. l_Kmag is flagged with a greater-than symbol if the Kmag magnitude is a lower limit. f_Kmag is flagged with a '?' if the K magnitude is uncertain. f_Kmag is flagged with a '*' if the source was observed by Downes et al., 1986MNRAS.218...31D. mag f_Kmag if Kmag is uncertain or from Downes number=9 These columns give the apparent K magnitude and associated uncertainty. l_Kmag is flagged with a greater-than symbol if the Kmag magnitude is a lower limit. f_Kmag is flagged with a '?' if the K magnitude is uncertain. f_Kmag is flagged with a '*' if the source was observed by Downes et al., 1986MNRAS.218...31D. --- e_Kmag Uncertainty on K magnitude number=9 These columns give the apparent K magnitude and associated uncertainty. l_Kmag is flagged with a greater-than symbol if the Kmag magnitude is a lower limit. f_Kmag is flagged with a '?' if the K magnitude is uncertain. f_Kmag is flagged with a '*' if the source was observed by Downes et al., 1986MNRAS.218...31D. mag z Redshift --- u_z Flagged '?' if redshift is uncertain --- r_ID Source references number=10 This column gives the references for (respectively) the optical position (C denotes COSMOS measurement by Downes et al.), the identification, the finding chart and the redshift; references qre sepqrqted by commas. --- code reference code --- reftxt Bibcode (if available) and reference text --- Patricio Ortiz CDS 1999Apr07 UNKNOWN UNKNOWN "The catalogue was originally archived as A050 by H. Andernach (heinz@astro.ugto.mx) and the ADS documentation prepared in collaboration with Carolyn Stern Grant (stern@cfa.harvard.edu)." J_MNRAS_238_1171.xml